778:(PNS). In that regard, the AAC profiles (AAC-LC, AAC Main and AAC-SSR profiles) are combined with perceptual noise substitution and are defined in the MPEG-4 audio standard as Audio Object Types. MPEG-4 Audio Object Types are combined in four MPEG-4 Audio profiles: Main (which includes most of the MPEG-4 Audio Object Types), Scalable (AAC LC, AAC LTP, CELP, HVXC, TwinVQ, Wavetable Synthesis, TTSI), Speech (CELP, HVXC, TTSI) and Low Rate Synthesis (Wavetable Synthesis, TTSI).
1091:) and their usage in brand new profiles. AAC is not used in some of the MPEG-4 Audio profiles. The MPEG-2 Part 7 AAC LC profile, AAC Main profile and AAC SSR profile are combined with Perceptual Noise Substitution and defined in the MPEG-4 Audio standard as Audio Object Types (under the name AAC LC, AAC Main and AAC SSR). These are combined with other Object Types in MPEG-4 Audio profiles. Here is a list of some audio profiles defined in the MPEG-4 standard:
1530:
25:
2117:: record and store audio in AAC format. The audio files can be replayed using the pen's integrated speaker, attached headphones, or on a computer using the Livescribe Desktop software. The AAC files are stored in the user's "My Documents" folder of the Windows OS and can be distributed and played without specialized hardware or software from Livescribe.
808:) and AAC Profile (AAC LC) were first standardized in ISO/IEC 14496-3:2001/Amd 1:2003. The HE-AAC v2 Profile (AAC LC with SBR and Parametric Stereo) was first specified in ISO/IEC 14496-3:2005/Amd 2:2006. The Parametric Stereo audio object type used in HE-AAC v2 was first defined in ISO/IEC 14496-3:2001/Amd 2:2004.
2472:, was considered experimental and poor. A significant amount of work was done for the 3.0 release of FFmpeg (February 2016) to make its version usable and competitive with the rest of the AAC encoders. Libav has not merged this work and continues to use the older version of the AAC encoder. These encoders are
1262:(AAC-ELDv2) as defined in ISO/IEC 14496-3:2009 and ISO/IEC 14496-3:2009/Amd 3 are designed to combine the advantages of perceptual audio coding with the low delay necessary for two-way communication. They are closely derived from the MPEG-2 Advanced Audio Coding (AAC) format. AAC-ELD is recommended by
1857:
released in 2002 which also plays MP3s. However, this phone was a commercial failure and such phones with integrated music players did not gain mainstream popularity until 2005 when the trend of having AAC as well as MP3 support continued. Most new smartphones and music-themed phones support playback
1301:
form so as to not "otherwise supply" an AAC codec. However, FFmpeg has since become more lenient on patent matters: the "gyan.dev" builds recommended by the official site now contain its AAC codec, with the FFmpeg legal page stating that patent law conformance is the user's responsibility. (See below
2445:
has been ported to other platforms. FFmpeg’s native AAC encoder does not support HE-AAC and HE-AACv2, but GPL 2.0+ of ffmpeg is not compatible with FDK AAC, hence ffmpeg with libfdk-aac is not redistributable. The QAAC encoder that is using Apple's Core Media Audio is still higher quality than FDK.
1717:
On May 29, 2007, Apple began selling songs and music videos from participating record labels at higher bitrate (256 kbit/s cVBR) and free of DRM, a format dubbed "iTunes Plus" . These files mostly adhere to the AAC standard and are playable on many non-Apple products but they do include custom
1726:
networks. It is possible, however, to remove these custom tags to restore interoperability with players that conform strictly to the AAC specification. As of
January 6, 2009, nearly all music on the USA regioned iTunes Store became DRM-free, with the remainder becoming DRM-free by the end of March
1482:
for file storage, AAC audio data was first packaged in a file for the MPEG-2 standard using Audio Data
Interchange Format (ADIF), consisting of a single header followed by the raw AAC audio data blocks. However, if the data is to be streamed within an MPEG-2 transport stream, a self-synchronizing
952:
Overall, the AAC format allows developers more flexibility to design codecs than MP3 does, and corrects many of the design choices made in the original MPEG-1 audio specification. This increased flexibility often leads to more concurrent encoding strategies and, as a result, to more efficient
2483:
library via libfdk-aac, and while the FFmpeg native encoder has become stable and good enough for common use, FDK is still considered the highest quality encoder available for use with FFmpeg. Libav also recommends using FDK AAC if it is available. FFmpeg 4.4 and above can also use the Apple
1185:
Applying error protection enables error correction up to a certain extent. Error correcting codes are usually applied equally to the whole payload. However, since different parts of an AAC payload show different sensitivity to transmission errors, this would not be a very efficient approach.
2000:, a popular video player, was withdrawn after version 0.66 due to patent issues, but can still be downloaded from sites other than corecodec.org. CorePlayer, the commercial follow-on to TCPMP, includes AAC support. Other Palm OS programs supporting AAC include Kinoma Player and AeroPlayer.
1274:
No licenses or payments are required for a user to stream or distribute audio in AAC format. This reason alone might have made AAC a more attractive format to distribute audio than its predecessor MP3, particularly for streaming audio (such as
Internet radio) depending on the use case.
723:, and a reworking of the bitstream format to handle up to 16 stereo channels, 16 mono channels, 16 low-frequency effect (LFE) channels and 16 commentary channels in one bitstream. The Main profile adds a set of recursive predictors that are calculated on each tap of the filterbank. The
1058:
AAC takes a modular approach to encoding. Depending on the complexity of the bitstream to be encoded, the desired performance and the acceptable output, implementers may create profiles to define which of a specific set of tools they want to use for a particular application.
1640:
standard that implements MPEG-2 video and MPEG-2 AAC audio. In April 2006 Japan started broadcasting the ISDB-T mobile sub-program, called 1seg, that was the first implementation of video H.264/AVC with audio HE-AAC in
Terrestrial HDTV broadcasting service on the planet.
2107:
as of
December 11, 2007. All AAC profiles and bitrates are supported as long as it is in the .m4a file extension. The 1.1 update removed MP3 compatibility, but according to Nintendo, users who have installed this may freely downgrade to the old version if they
1310:, has imported the "Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android" to its repositories on September 25, 2018, and has enabled FFmpeg's native AAC encoder and decoder for its ffmpeg-free package on January 31, 2023.
2036:: plays M4A files containing AAC, and displays metadata created by iTunes. Other Sony products, including the A and E series Network Walkmans, support AAC with firmware updates (released May 2006) while the S series supports it out of the box.
1019:
audio standard does not define a single or small set of highly efficient compression schemes but rather a complex toolbox to perform a wide range of operations from low bit rate speech coding to high-quality audio coding and music synthesis.
1515:
AAC extensions. However, it is restricted to only a single non-multiplexed AAC stream. This format is also referred to as a Low
Overhead Audio Transport Multiplex (LATM), which is just an interleaved multiple stream version of a LOAS.
3235:
Johnston, J. D., Sinha, D., Dorward, S. and
Quackenbush, S., "AT&T perceptual audio coder (PAC)" in Collected Papers on Digital Audio Bit-Rate Reduction, Gilchrist, N. and Grewin, C. (Ed.), Audio Engineering Society,
1199:
The toolkit is backwardly compatible with simpler and pre-existing AAC decoders. A great deal of the toolkit's error correction functions are based around spreading information about the audio signal more evenly in the
2418:
FAAC and FAAD2 stand for
Freeware Advanced Audio Coder and Decoder 2 respectively. FAAC supports audio object types LC, Main and LTP. FAAD2 supports audio object types LC, Main, LTP, SBR and PS. Although FAAD2 is
796:
and error resilient (ER) versions of object types. It also defined four new audio profiles: High
Quality Audio Profile, Low Delay Audio Profile, Natural Audio Profile and Mobile Audio Internetworking Profile.
1049:
By default, the longer 1024-point/960-point window is otherwise used because the increased frequency resolution allows for a more sophisticated psychoacoustic model, resulting in improved coding efficiency.
1950:
by HP/Palm supports AAC, AAC+, eAAC+, and .m4a containers in its native music player as well as several third-party players. However, it does not support Apple's FairPlay DRM files downloaded from iTunes.
1177:
One of many improvements in MPEG-4 Audio is an Object Type called Long Term
Prediction (LTP), which is an improvement of the Main profile using a forward predictor with lower computational complexity.
1942:
2.3 and later supports AAC-LC, HE-AAC and HE-AAC v2 in MP4 or M4A containers along with several other audio formats. Android 3.1 and later supports raw ADTS files. Android 4.1 can encode AAC.
1495:, but are only considered informative by MPEG-4, so an MPEG-4 decoder does not need to support either format. These containers, as well as a raw AAC stream, may bear the .aac file extension.
3582:
2748:
3799:
428:, limited to 120 Hz) channels, up to 16 "coupling" or dialog channels, and up to 16 data streams. The quality for stereo is satisfactory to modest requirements at 96 kbit/s in
728:
3927:
829:
standard also contains other ways of compressing sound. These include lossless compression formats, synthetic audio and low bit-rate compression formats generally used for speech.
8127:
1895:
and other new generation Nokia multimedia phones like N- and E-Series also support AAC format in LC, HE, M4A and HEv2 profiles. These also supports playing LTP-encoded AAC audio.
724:
1028:
audio coding algorithm family spans the range from low bit rate speech encoding (down to 2 kbit/s) to high-quality audio coding (at 64 kbit/s per channel and higher).
3328:
3261:
2382:
956:
While the MP3 format has near-universal hardware and software support, primarily because MP3 was the format of choice during the crucial first few years of widespread music
1499:
also defines its own self-synchronizing format called a Low Overhead Audio Stream (LOAS) that encapsulates not only AAC, but any MPEG-4 audio compression scheme such as
3702:
3365:
2631:
1365:. Based on the list of patents from the SEC terms, the last baseline AAC patent expires in 2028, and the last patent for all AAC extensions mentioned expires in 2031.
953:
compression. This is especially true at very low bit rates where the superior stereo coding, pure MDCT, and better transform window sizes leave MP3 unable to compete.
4522:
1042:
AAC encoders can switch dynamically between a single MDCT block of length 1024 points or 8 blocks of 128 points (or between 960 points and 120 points, respectively).
3245:
Herre, J. and Johnston, J. D., "Enhancing the performance of perceptual audio coders by using temporal noise shaping", AES 101st Convention, no. preprint 4384, 1996
3645:
3552:
2731:
2711:
1653:
that implements video coding H.264/AVC with audio AAC-LC on main program (single or multi) and video H.264/AVC with audio HE-AACv2 in the 1seg mobile sub-program.
1714:
or create files without DRM from their own CDs using iTunes. In later years, Apple began offering music videos and movies, which also use AAC for audio encoding.
3840:
4500:
3386:
4444:
1491:) is used, consisting of a series of frames, each frame having a header followed by the AAC audio data. This file and streaming-based format are defined in
1282:. The terms (as disclosed to SEC) uses per-unit pricing. In the case of software, each computer running the software is to be considered a separate "unit".
781:
The reference software for MPEG-4 Part 3 is specified in MPEG-4 Part 5 and the conformance bit-streams are specified in MPEG-4 Part 4. MPEG-4 Audio remains
2684:
2165:, since version 9 update 3, can also play back AAC streams. Since Flash Player is also a browser plugin, it can play AAC files through a browser as well.
1465:
1104:– defined in 1999, uses most of the MPEG-4 Audio Object Types (AAC Main, AAC-LC, AAC-SSR, AAC-LTP, AAC Scalable, TwinVQ, CELP, HVXC, TTSI, Main synthesis)
3606:
2628:"ISO/IEC 13818-7:1997, Information technology — Generic coding of moving pictures and associated audio information — Part 7: Advanced Audio Coding (AAC)"
3667:"3GPP TS 26.401 V6.0.0 (2004-09), General Audio Codec audio processing functions; Enhanced aacPlus General Audio Codec; General Description (Release 6)"
2709:
ISO/IEC 13818-7:2006 – Information technology — Generic coding of moving pictures and associated audio information — Part 7: Advanced Audio Coding (AAC)
711:
profile (AAC-SSR). AAC-LC profile consists of a base format very much like AT&T's Perceptual Audio Coding (PAC) coding format, with the addition of
7405:
6285:
5055:
4551:
972:
coding algorithm that exploits two primary coding strategies to dramatically reduce the amount of data needed to represent high-quality digital audio:
4362:
7557:
3574:
3673:
2755:
862:
Blind tests in the late 1990s showed that AAC demonstrated greater sound quality and transparency than MP3 for files coded at the same bit rate.
819:
3808:
3226:
Sinha, D. and Johnston, J. D., "Audio compression at low bit rates using a signal adaptive switched filterbank", IEEE ASSP, 1996, pp. 1053-1057.
3110:
3043:
2592:
2178:(available for multiple portable players) also offers support for AAC to varying degrees, depending on the model of player and the AAC profile.
6169:
5960:
5356:
4886:
2025:
2021:
1993:
4577:
1196:
This toolkit provides the error correcting capability to the most sensitive parts of the payload in order to keep the additional overhead low.
1193:
Independent error correcting codes can be applied to any of these parts using the Error Protection (EP) tool defined in MPEG-4 Audio standard.
5707:
4850:
4333:
3957:
4392:
4304:
4262:
4060:
7590:
1741:(which is fully part of the MP4 standard) only for radio streams, not file playback, and iTunes still lacks support for true VBR encoding.
3508:
948:, backwards prediction, perceptual noise substitution (PNS), etc. These modules can be combined to constitute different encoding profiles.
7892:
6579:
6141:
5598:
3919:
5995:
3898:
3484:
3189:
2943:
8183:
7642:
567:(MDCT), proposed by J. P. Princen, A. W. Johnson and A. B. Bradley in 1987, following earlier work by Princen and Bradley in 1986. The
4078:
3401:
7193:
6946:
6173:
5956:
5360:
4890:
4017:
1449:, Not yet published, can supplement an AAC stream to provide a lossless decoding option, such as in Fraunhofer IIS's "HD-AAC" product
3869:
2357:
Some of these players (e.g., foobar2000, Winamp, and VLC) also support the decoding of ADTS (Audio Data Transport Stream) using the
1594:
452:(MDCT) algorithm, giving it higher compression efficiency than MP3, which uses a hybrid coding algorithm that is part MDCT and part
7323:
7292:
7280:
6787:
6515:
5743:
4969:
4414:
2808:
1046:
If a signal change or a transient occurs, 8 shorter windows of 128/120 points each are chosen for their better temporal resolution.
4123:
3336:
3269:
3168:
2487:
Although the native AAC encoder only produces AAC-LC, ffmpeg's native decoder is able to deal with a wide range of input formats.
1566:
5813:
4224:
3763:
793:
3451:
7931:
7302:
5818:
1547:
6000:
4192:
2199:: a suite of DirectShow and QuickTime plugins which support AAC encoding or AAC/ HE-AAC decoding in any DirectShow application
8173:
7902:
5400:
4665:
3694:
3357:
2897:
2627:
1734:
scheme (a less strict variant of ABR encoding); the underlying QuickTime API does offer a true VBR encoding profile however.
1573:
1412:
4530:
4144:
3727:
582:
introduced a method that radically shrank the amount of information needed to store the digitized form of a song or speech.
7162:
5881:
4470:
991:. This is done by using filter banks that take an appropriate number of time samples and convert them to frequency samples.
7951:
2813:
1930:
supports AAC and FairPlay protected AAC files formerly used as the default encoding format in the iTunes Store until the
3637:
3544:
2728:
2708:
2455:
1669:, supports AAC, HE-AAC and HE-AAC v2 audio coding in DVB applications since at least 2004. DVB broadcasts which use the
578:. AAC uses a purely MDCT algorithm, giving it higher compression efficiency than MP3. Development further advanced when
6641:
6606:
6584:
5783:
5758:
4694:
2496:
1580:
988:
564:
449:
4282:
ETSI TS 101 154 v1.5.1: Specification for the use of Video and Audio Coding in Broadcasting Applications based on the
4169:"Fraunhofer's xHE-AAC Audio Codec Software Extends Native AAC Support In Android P For Better Quality At Low Bitrates"
3217:
Johnston, J. D. and Ferreira, A. J., "Sum-difference stereo transform coding", ICASSP '92, March 1992, pp. II-569-572.
7111:
6381:
5432:
4843:
3832:
3070:
2067:
1613:
4492:
3426:
7583:
7224:
6423:
5977:
5876:
5666:
5068:
4636:
4607:
1562:
1062:
The MPEG-2 Part 7 standard (Advanced Audio Coding) was first published in 1997 and offers three default profiles:
7430:
7297:
7044:
7002:
6530:
6257:
6121:
5964:
5588:
5542:
5442:
4719:
4436:
2338:
1931:
1171:
433:
788:
The MPEG-4 Audio Version 2 (ISO/IEC 14496-3:1999/Amd 1:2000) defined new audio object types: the low delay AAC (
8064:
6699:
6520:
6203:
5608:
5437:
1551:
1346:
1031:
AAC offers sampling frequencies between 8 kHz and 96 kHz and any number of channels between 1 and 48.
630:
3613:
3139:
2691:
7912:
7186:
6667:
6329:
5715:
5701:
5154:
4770:
2307:, including the DRM rights management encoding used for purchased music from the iTunes Store, with a plug-in
1286:
5695:
5148:
4555:
4261:. Library of Congress / National Digital Information Infrastructure and Preservation Program. 7 March 2007.
2095:: supports streaming of AAC through the Zune software, and of supported iPods connected through the USB port
1128:– defined in 2000, uses AAC-LC, AAC-LTP, AAC Scalable, CELP, ER-AAC-LC, ER-AAC-LTP, ER-AAC Scalable, ER-CELP
7839:
7450:
7101:
6708:
6663:
6265:
6186:
5896:
5603:
5593:
5502:
5365:
5040:
4962:
4895:
4866:
4836:
4354:
3509:"Text of ISO/IEC 14496-3:2001/FPDAM 4, Audio Lossless Coding (ALS), new audio profiles and BSAC extensions"
1996:. Version 4.0, released in December 2006, added support for native AAC and HE-AAC files. The AAC codec for
913:(AAC uses a blocksize of 1024 or 960 samples, allowing more efficient coding than MP3's 576 sample blocks);
634:
2476:-licensed open-source and can be built for any platform that the FFmpeg or Libav frameworks can be built.
1209:
Error Resilience (ER) techniques can be used to make the coding scheme itself more robust against errors.
8137:
7576:
5773:
4755:
1459:
920:(AAC uses a blocksize of 128 or 120 samples, allowing more accurate coding than MP3's 192 sample blocks);
440:). Tests of MPEG-4 audio have shown that AAC meets the requirements referred to as "transparent" for the
233:
2974:
8110:
8079:
7824:
7734:
7390:
7369:
7328:
7214:
7023:
6961:
6646:
6621:
6111:
5748:
5555:
5007:
3666:
2652:
2512:
2442:
2136:
1988:
1981:: Supports AAC and FairPlay protected AAC files used as the default encoding format in the iTunes Store
1938:
1666:
1479:
1088:
750:
519:
320:
281:
3545:"Audio Lossless Coding (ALS), new audio profiles and BSAC extensions, ISO/IEC 14496-3:2005/Amd 2:2006"
1867:
phones support various AAC formats in MP4 container. AAC-LC is supported in all phones beginning with
1266:
as super-wideband voice codec in the IMS Profile for High Definition Video Conference (HDVC) Service.
734:
In 1999, MPEG-2 Part 7 was updated and included in the MPEG-4 family of standards and became known as
7465:
6596:
6126:
6050:
5969:
5204:
4168:
3099:
3026:
1703:
1508:
1418:
805:
544:
2657:(Full draft). Sustainability of Digital Formats. Washington, D.C.: Library of Congress. 22 June 2010
960:/distribution over the internet, AAC is a strong contender due to some unwavering industry support.
902:(modified discrete cosine transform), rather than MP3's hybrid coding (which was part MDCT and part
731:
filterbank, with four shorter filterbanks following, in order to allow for scalable sampling rates.
7531:
7179:
6557:
6510:
6344:
6298:
6160:
6096:
5833:
5234:
4569:
2915:, IEEE Proc. Intl. Conference on Acoustics, Speech, and Signal Processing (ICASSP), 2161–2164, 1987
1587:
4747:
4384:
4325:
3948:
3862:"ISO/IEC 14496-3:2009 - Information technology -- Coding of audio-visual objects -- Part 3: Audio"
3695:"ISO/IEC 14496-3:2009 - Information technology -- Coding of audio-visual objects -- Part 3: Audio"
8089:
7988:
7941:
7849:
6503:
6470:
6386:
6324:
6293:
5853:
5613:
4296:
4258:
2327:
2257:
2232:
1540:
771:
5102:
3807:. 109th AES Convention 2000 September 22–25 Los Angeles. Fraunhofer Gesellschaft. Archived from
3028:
ISO/IEC 14496-3:2009 - Information technology -- Coding of audio-visual objects -- Part 3: Audio
7983:
7897:
7739:
7480:
7455:
7143:
7127:
6601:
6334:
6181:
5808:
5045:
4986:
4974:
4828:
4061:"Commit - rpms/fdk-aac-free - b27d53fbad872ea0ec103653fddaec83238132d9 - src.fedoraproject.org"
3520:
2287:: an advanced music manager and player that also supports encoding and ripping through a plugin
712:
398:
351:
289:
46:
3290:
2779:
2729:
ISO/IEC 14496-3:2005 – Information technology — Coding of audio-visual objects — Part 3: Audio
2341:
supports the RealAudio AAC codec, in addition to offering subscription tracks encoded with AAC
2135:
Almost all current computer media players include built-in decoders for AAC, or can utilize a
1992:: Many Palm OS based PDAs and smartphones can play AAC and HE-AAC with the 3rd party software
1373:
Some extensions have been added to the first AAC standard (defined in MPEG-2 Part 7 in 1997):
792:) object type, bit-sliced arithmetic coding (BSAC) object type, parametric audio coding using
8168:
8084:
7907:
7445:
7364:
7219:
6986:
6951:
6890:
6863:
6837:
6564:
6408:
6198:
5417:
5373:
5035:
4283:
3890:
3476:
3197:
2913:
Subband/transform coding using filter bank designs based on time domain aliasing cancellation
1504:
917:
754:
which are used to allow interoperability with a diverse range of other audio formats such as
689:
571:
526:
devices, various in-dash car audio systems, and is also one of the audio formats used on the
425:
417:
341:
1649:
In December 2007, Brazil started broadcasting terrestrial DTV standard called International
1507:. This format is what was defined for use in DVB transport streams when encoders use either
1278:
However, a patent license is required for all manufacturers or developers of AAC "end-user"
1095:
7712:
7652:
7637:
7632:
7338:
7096:
6885:
6832:
6537:
6224:
5385:
5316:
5184:
2822:
2212:
2172:
2009:
1789:
1722:
and a purchase receipt, so as to identify the customer in case the file is leaked out onto
1008:
839:
748:. This update included several improvements. One of these improvements was the addition of
4233:
1034:
In contrast to MP3's hybrid filter bank, AAC uses the modified discrete cosine transform (
8:
7819:
7690:
6875:
6868:
6811:
6525:
6193:
5985:
5891:
5838:
5550:
5345:
5321:
5269:
5025:
4928:
4875:
4079:"Commit - rpms/ffmpeg - 45f894ec0e43a37775393c159021a4ac60170a55 - src.fedoraproject.org"
3861:
2300:
1394:, added in MPEG-4 in 1999. It is a forward predictor with lower computational complexity.
782:
7568:
4422:
3001:
2826:
1087:
The MPEG-4 Part 3 standard (MPEG-4 Audio) defined various new compression tools (a.k.a.
7956:
7495:
7374:
6692:
6616:
6131:
6116:
5656:
5628:
5311:
5274:
4248:
Presented at the 115th Convention of the Audio Engineering Society, 10–13 October 2003.
4115:
4096:
3995:
3891:"ISO/IEC 14496-3:2009/Amd 3:2012 - Transport of unified speech and audio coding (USAC)"
3833:"ISO/IEC 14496-3:2009/Amd 3:2012 - Transport of unified speech and audio coding (USAC)"
3798:
Grill, Bernhard; Geyersberger, Stefan; Hilpert, Johannes; Teichmann, Bodo (July 2004).
3160:
2951:
2868:
2531:
2480:
2432:
2162:
1868:
1400:, added in MPEG-4 Audio version 2 in 2000, used for transport over error prone channels
1326:
910:
594:
180:
76:
6677:
6574:
5475:
3774:
3748:
8069:
8028:
7946:
6900:
6542:
6493:
5945:
5788:
5378:
5229:
4903:
2893:
2872:
2834:
2564:
2219:
2140:
1891:
1512:
1430:
552:
402:
263:
8023:
2381:), which is capable of encoding LC-AAC, HE-AAC and HE-AAC v2 streams. The tool is a
1730:
iTunes offers a "Variable Bit Rate" encoding option which encodes AAC tracks in the
8105:
8049:
8018:
7863:
7674:
7599:
7490:
6981:
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protocol. Plug-ins for Winamp and foobar2000 enable the creation of such streams.
2147:
can be used this way with the corresponding filters to enable AAC playback in any
1212:
For AAC, three custom-tailored methods were developed and defined in MPEG-4 Audio
8074:
8044:
7680:
7521:
7106:
6569:
6361:
5470:
5447:
4759:
3723:
2735:
2715:
2192:
The following is a non-comprehensive list of other software player applications:
1731:
1189:
The AAC payload can be subdivided into parts with different error sensitivities.
1146:– defined in 2000, uses ER-AAC-LC, ER-AAC-Scalable, ER-TwinVQ, ER-BSAC, ER-AAC-LD
299:
294:
5931:
4809:
4799:
4789:
4779:
4466:
2926:
Analysis/synthesis filter bank design based on time domain aliasing cancellation
585:
AAC was developed with the cooperation and contributions of companies including
488:
7684:
7485:
7359:
7318:
7270:
6976:
6971:
6966:
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6651:
6498:
6339:
6208:
5301:
2506:
2438:
2378:
2004:
1783:
1334:
1303:
1110:– defined in 1999, uses AAC-LC, AAC-LTP, AAC Scalable, TwinVQ, CELP, HVXC, TTSI
1079:
995:
969:
598:
590:
273:
196:
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in 1973, publishing their results in 1974. This led to the development of the
8178:
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8059:
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7603:
7541:
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7354:
7265:
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6941:
6928:
6880:
6685:
6547:
6354:
5848:
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5412:
5296:
4940:
4707:
Which encoder provides the best quality? ... the likely answer is: libfdk_aac
4690:
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1904:
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1842:
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and variable frame length. Standardized constant bit rate with bit reservoir;
826:
736:
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579:
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introduced in 1992 used a hybrid coding algorithm that is part MDCT and part
492:
421:
390:
348:
5911:
4815:
2864:
880:
up to 48 channels (MP3 supports up to two channels in MPEG-1 mode and up to
811:
The current version of the AAC standard is defined in ISO/IEC 14496-3:2009.
8131:
7606:
7018:
6371:
6136:
5926:
5921:
5778:
5753:
5249:
3638:"Parametric coding for high-quality audio, ISO/IEC 14496-3:2001/Amd 2:2004"
2560:
2535:
2525:
2294:
2072:
1907:
operating system support AAC playback natively. Select previous generation
1846:
1795:
1778:
1773:
1761:
1723:
1711:
1702:
update for older iPods). Customers could download music in a closed-source
1385:
987:
The signal is converted from time-domain to frequency-domain using forward
957:
938:
515:
511:
476:
472:
429:
386:
50:
3078:
1408:(Low Delay), defined in 2000, used for real-time conversation applications
8054:
7879:
7670:
7526:
6435:
6376:
6314:
5916:
5679:
5674:
5259:
5179:
4908:
3387:"ISO/IEC 14496-3:/Amd.1 - Final Committee Draft - MPEG-4 Audio Version 2"
2851:; Natarajan, T.; Rao, K. R. (January 1974), "Discrete Cosine Transform",
2556:
2247:
2059:
2032:
1959:
1466:
Comparison of video container formats § Audio coding formats support
1437:
1330:
1298:
895:
870:
618:
277:
4628:
2456:
FAAC § Alternatives for AAC encoding in Unix-like operating systems
502:
phones. It is supported on a wide range of devices and software such as
358:
format and generally achieves higher sound quality than MP3 at the same
7936:
7922:
7624:
7171:
6349:
6242:
5651:
5422:
5291:
5254:
5189:
5073:
4950:
4859:
4599:
3432:. Paris. AES 108th Convention: MPEG-4 Version 2 Audio What is it about?
3100:"ISO/IEC 13818-7, Fourth edition, Part 7 - Advanced Audio Coding (AAC)"
2516:
2465:
2397:
2393:
2310:
2290:
2225:
2215:
2202:
2148:
2144:
2122:
2112:
2050:
1973:
1922:
1899:
1854:
1687:
1554: in this section. Unsourced material may be challenged and removed.
1445:
1350:
523:
204:
149:
4723:
4223:
Wolters, Martin; Kjorling, Kristofer; Homm, Daniel; Purnhagen, Heiko.
3764:"ISO/IEC 13818-7, Third edition, Part 7 - Advanced Audio Coding (AAC)"
7999:
7858:
7440:
6418:
6020:
5823:
5803:
5623:
5618:
5281:
5239:
2885:
2358:
2331:
2279:
2186:
2156:
1829:
For a number of years, many mobile phones from manufacturers such as
1425:
1354:
1338:
1314:
1134:– defined in 2000, uses CELP, HVXC, TTSI, ER-AAC-LD, ER-CELP, ER-HVXC
944:
additional modules (tools) added to increase compression efficiency:
720:
626:
606:
586:
560:
499:
208:
176:
39:
2538:
codec for both pre-encoded and interactive use, standardized in 2012
2353:: supports MP4 playback using a plugin provided by the faad2 library
1529:
1007:
In order to prevent corrupt samples, a modern implementation of the
668:. This part of MPEG-2 was a new part, since MPEG-2 already included
7749:
7702:
7660:
6396:
6275:
5906:
5798:
5224:
5078:
3920:"The AAC-ELD Family for High Quality Communication Services | MPEG"
3135:
2848:
2804:
2304:
2284:
2242:
2229:
2182:
2175:
2152:
2091:
2076:
1834:
1707:
1699:
1433:
and HE-AAC; used for even lower bitrates. Defined in 2004 and 2006.
1429:, a.k.a. aacPlus v2, eAAC+ or Enhanced aacPlus, the combination of
1038:) together with the increased window lengths of 1024 or 960 points.
888:
556:
410:
359:
35:
4658:"December 5th, 2015, The native FFmpeg AAC encoder is now stable!"
2181:
Optional iPod support (playback of unprotected AAC files) for the
774:. Another notable addition in this version of the AAC standard is
676:(Backwards Compatible). Therefore, MPEG-2 Part 7 is also known as
7789:
7744:
7698:
7425:
6744:
6611:
6552:
6465:
6219:
6106:
6065:
6060:
6045:
6040:
6035:
6030:
6025:
5886:
5828:
5768:
5532:
5512:
5497:
5286:
5214:
5194:
3797:
2370:
2267:
2236:
2208:
2169:
1985:
1915:
1850:
1838:
1817:
1806:
1650:
1441:, extends the operating range of the codec from 12 to 300 kbit/s.
1358:
1307:
976:
Signal components that are perceptually irrelevant are discarded.
680:(Non-Backward Compatible), because it is not compatible with the
622:
527:
4858:
4765:
4042:
3427:"MPEG-4 Version 2 Audio Workshop:HILN - Parametric Audio Coding"
3329:"MPEG-4 Natural Audio Coding - General Audio Coding (AAC based)"
3327:
Brandenburg, Karlheinz; Kunz, Oliver; Sugiyama, Akihiko (1999).
2324:
for Windows: includes an AAC encoder that supports LC and HE AAC
2063:: a network audio player, supports playback of AAC encoded files
1075:– like the LC profile, with the addition of backwards prediction
8013:
7829:
7803:
7798:
7757:
7708:
7694:
7470:
7460:
7080:
7075:
7070:
7065:
7060:
6907:
6792:
6782:
6768:
6760:
6749:
6739:
6734:
6729:
6724:
6719:
6413:
5871:
5565:
5405:
5326:
5306:
5244:
4981:
4957:
4935:
4923:
4918:
4792:- RTP Payload Format for Transport of MPEG-4 Elementary Streams
4259:"Advanced Audio Coding (MPEG-2), Audio Data Interchange Format"
3950:
IMS Profile for High Definition Video Conference (HDVC) Service
3607:"MPEG-4 aacPlus - Audio coding for today's digital media world"
2890:
Discrete Cosine Transform: Algorithms, Advantages, Applications
2521:
2501:
2461:
2321:
2262:
1926:
1750:
1738:
1691:
1637:
1500:
1404:
1290:
1279:
1251:
1241:
1025:
1016:
856:
852:
801:
789:
755:
681:
484:
460:
382:
378:
374:
4752:
4552:"Xbox.com | System Use - Use an Apple iPod with Xbox 360"
3801:
Implementation of MPEG-4 Audio Components on various Platforms
941:(different methods can be used in different frequency ranges);
633:. It was officially declared an international standard by the
7834:
7729:
7621:
7505:
7435:
7255:
7250:
7245:
7148:
6934:
6822:
6460:
6391:
6234:
6010:
5973:
5858:
5560:
5527:
5522:
5517:
5507:
5492:
5487:
5482:
5465:
5457:
5219:
5199:
5030:
5020:
5015:
5003:
4991:
2469:
2275:
2040:
2016:
1997:
1946:
1884:
1830:
1755:
1670:
1636:
In December 2003, Japan started broadcasting terrestrial DTV
1318:
1302:
under Products that support AAC, Software.) Fortunately, the
983:
The actual encoding process consists of the following steps:
837:
Advanced Audio Coding is designed to be the successor of the
496:
406:
394:
345:
260:
192:
184:
934:
much better handling of audio frequencies above 16 kHz;
7536:
7500:
7333:
7240:
6401:
6146:
6101:
6091:
6081:
6055:
6015:
6005:
5901:
5843:
5763:
5726:
5721:
5638:
5580:
5570:
5331:
5209:
5083:
5063:
2473:
2413:
2385:
only. A separate utility is also included to decode to PCM
2350:
2344:
2271:
2252:
2196:
1977:
1880:
1876:
1872:
1811:
1767:
1695:
1690:
brought mainstream attention to AAC by announcing that its
1662:
1322:
1294:
1263:
1035:
899:
815:
763:
759:
614:
468:
464:
188:
139:
125:
121:
117:
113:
109:
95:
91:
87:
2593:"Via Licensing Announces Updated AAC Joint Patent License"
1853:
have supported AAC playback. The first such phone was the
7598:
7420:
7395:
6895:
6842:
6440:
6428:
6270:
6086:
5990:
5793:
5390:
5132:
5127:
5122:
5117:
5112:
5107:
4015:
3770:
3698:
3641:
3548:
3516:
3512:
3480:
3397:
3393:
3361:
3301:
3297:
3283:
3262:"MPEG-4 Natural Audio Coding - Audio profiles and levels"
3260:
Brandenburg, Karlheinz; Kunz, Oliver; Sugiyama, Akihiko.
3193:
3164:
3106:
3039:
3035:
2623:
2401:
2386:
2318:: supports playback and encoding of MP4 and raw AAC files
2099:
1698:
products would support songs in MPEG-4 AAC format (via a
1475:
1471:
1342:
903:
881:
874:
848:
844:
693:
685:
663:
659:
602:
575:
568:
507:
453:
445:
441:
370:
366:
355:
200:
4523:"Adobe Delivers Flash Player 9 with H.264 Video Support"
4222:
3322:
3320:
3318:
3019:
2749:"The AAC Audio Coding Family For Broadcast and Cable TV"
6707:
3477:"ISO/IEC 14496-3:2001/Amd 1:2003 - Bandwidth extension"
3326:
1962:
runtime supports AAC-LC, HE-AAC and HE-AAC v2 decoding.
1875:
have support of HE-AAC. The latest devices such as the
444:
at 128 kbit/s for stereo, and 384 kbit/s for
4570:"Nero Platinum 2018 Suite - Award-winning all-rounder"
3537:
3255:
3253:
3251:
979:
Redundancies in the coded audio signal are eliminated.
559:
in 1972, and developed by Ahmed with T. Natarajan and
3519:
JTC1/SC29/WG11/N7016. 11 January 2005. Archived from
3315:
1673:
compression for video normally use HE-AAC for audio.
1140:- defined in 2012, uses AAC-LD, AAC-ELD and AAC-ELDv2
7061:
Part 1: Transport and Storage of Genomic Information
4782:- RTP Payload Format for MPEG-4 Audio/Visual Streams
3358:"ISO/IEC 14496-3:1999/Amd 1:2000 - Audio extensions"
3350:
1231:
to reduce error propagation within scale factor data
994:
The frequency domain signal is quantized based on a
4437:"Nintendo - Customer Service - Wii - Photo Channel"
3756:
3503:
3501:
3379:
3259:
3248:
3182:
3092:
1421:
and AAC LC. Used for low bitrates. Defined in 2003.
2944:"The Use of FFT and MDCT in MP3 Audio Compression"
2809:"How I Came Up With the Discrete Cosine Transform"
2441:-authored open-source encoder/decoder included in
1737:As of September 2009, Apple has added support for
1706:(DRM)-restricted form of 128 kbit/s AAC (see
7558:List of digital television deployments by country
3161:"MPEG Audio FAQ Version 9 - MPEG-1 and MPEG-2 BC"
3153:
2847:
2618:
2616:
1069:– the simplest and most widely used and supported
8160:
4173:Fraunhofer Institute for Integrated Circuits IIS
4149:Fraunhofer Institute for Integrated Circuits IIS
3601:
3599:
3575:"Audio compression gets better and more complex"
3498:
2996:
2994:
2928:, IEEE Trans. Acoust. Speech Signal Processing,
2911:J. P. Princen, A. W. Johnson und A. B. Bradley:
2103:: supports AAC files through version 1.1 of the
1417:, a.k.a. aacPlus v1 or AAC+, the combination of
459:AAC is the default or standard audio format for
436:demands data rates of at least 128 kbit/s (
7149:Part 2: Low Complexity Enhancement Video Coding
4802:- The Codecs Parameter for "Bucket" Media Types
3687:
3291:"ISO/IEC FCD 14496-3 Subpart 1 - Draft - N2203"
1219:to avoid error propagation within spectral data
1180:
820:European Telecommunications Standards Institute
4385:"Supported media formats - Android Developers"
4107:
3791:
3443:
2613:
2587:
2585:
2583:
2373:released an AAC encoding tool free of charge,
2126:: supports playback of LC-AAC and HE-AAC audio
2012:or by third-party products (TCPMP, CorePlayer)
1368:
843:, known as MP3 format, which was specified by
832:
7584:
7187:
6693:
4844:
4820:
4226:A closer look into MPEG-4 High Efficiency AAC
4113:
3773:. 15 October 2004. p. 32. Archived from
3596:
2991:
2678:
2676:
2674:
2672:
2087:: supports encoding and decoding of AAC files
1225:to detect serious errors within spectral data
424:in one stream plus 16 low frequency effects (
354:. It was designed to be the successor of the
7102:Part 2: High Efficiency Video Coding (H.265)
4685:
4683:
3400:JTC 1/SC 29/WG 11. July 1999. Archived from
2079:company) that supports playback of AAC files
1816:Any portable player that fully supports the
1519:
3469:
3418:
2682:
2580:
1204:
7591:
7577:
7194:
7180:
7112:Part 12: High Efficiency Image File Format
6700:
6686:
4851:
4837:
4218:
4216:
4214:
4212:
4016:Via Licensing Corporation (June 5, 2018).
4009:
3630:
3065:
3063:
2669:
1460:MPEG-4 Part 3: Audio storage and transport
1384:in 1999. It allows the coding of noise as
1001:Internal error correction codes are added.
643:Subpart 4 in Part 3 of the MPEG-4 standard
4680:
4043:"FFmpeg License and Legal Considerations"
3659:
3424:
2878:
2334:, supports playback of AAC files natively
1932:removal of DRM restrictions in March 2009
1744:
1614:Learn how and when to remove this message
989:modified discrete cosine transform (MDCT)
931:at the expense of widening the main lobe;
7201:
4114:Thom, D.; Purnhagen, H. (October 1998).
3566:
3133:
2054:: supports playback of AAC encoded files
1644:
1269:
1116:– defined in 1999, uses CELP, HVXC, TTSI
284:and Audio Data Interchange Format (ADIF)
7045:Part 3: Unified Speech and Audio Coding
7003:Part 2: Description definition language
4209:
3449:
3060:
2972:
2941:
2935:
2222:that uses FAAD2 to support AAC decoding
1758:(unofficially supported on some models)
1665:, the standards governing body for the
1164:– defined in 2006, uses AAC-LC, SBR, PS
1122:– defined in 1999, TTSI, Main synthesis
794:harmonic and individual line plus noise
637:in April 1997. It is specified both as
8161:
7128:Part 3: Versatile Video Coding (H.266)
6952:Part 10: Advanced Video Coding (H.264)
4771:AAC improvements and extensions (2004)
2884:
2841:
1229:Reversible Variable Length Code (RVLC)
699:MPEG-2 Part 7 defined three profiles:
7969:
7572:
7175:
7066:Part 2: Coding of Genomic Information
6681:
4832:
4819:
4580:from the original on 14 December 2012
4365:from the original on 29 December 2017
4307:from the original on 18 February 2009
4294:
4251:
3454:. MPEG Industry Forum. Archived from
3425:Purnhagen, Heiko (19 February 2000).
2803:
2797:
2426:
2364:
2303:: supports AAC on Windows, Linux and
2185:is available as a free download from
1478:and other container formats based on
653:In 1997, AAC was first introduced as
4415:"Palm Pre Phone / Features, Details"
3963:from the original on 18 August 2016.
3585:from the original on 8 February 2016
3572:
2721:
2701:
2008:: Supports AAC either by the native
1552:adding citations to reliable sources
1523:
1453:
1168:Extended High Efficiency AAC xHE-AAC
1144:Mobile Audio Internetworking Profile
1004:The signal is stored or transmitted.
18:
6962:Part 12: ISO base media file format
6709:MPEG (Moving Picture Experts Group)
4812:- MIME Type Registration for MPEG-4
4503:from the original on 2 October 2011
4493:"Statistics - Adobe Flash runtimes"
4116:"MPEG Audio FAQ Version 9 - MPEG-4"
3676:from the original on 19 August 2006
2622:
2449:
1378:Perceptual Noise Substitution (PNS)
1158:– defined in 2003, uses AAC-LC, SBR
1053:
13:
7970:
7024:Part 5: Rights Expression Language
6642:Comparison of audio coding formats
4697:from the original on 17 April 2016
4395:from the original on 11 March 2012
4355:"Gingerbread - Android Developers"
4161:
4137:
3450:Pereira, Fernando (October 2001).
2924:John P. Princen, Alan B. Bradley:
2497:Comparison of audio coding formats
2479:Both FFmpeg and Libav can use the
2460:The native AAC encoder created in
2377:(the AAC codec portion has become
1792:(PSP) with firmware 2.0 or greater
1681:
1631:
648:
565:modified discrete cosine transform
450:modified discrete cosine transform
416:AAC supports inclusion of 48 full-
14:
8195:
8184:Open standards covered by patents
4741:
4668:from the original on 16 July 2016
4482:| Supported Media for Google Cast
4467:"Supported Media for Google Cast"
4265:from the original on 30 July 2008
3956:. GSMA. 24 May 2016. p. 10.
3116:from the original on 6 March 2009
3049:from the original on 14 June 2011
2754:. 2013. p. 6. Archived from
2407:
1626:
1446:MPEG-4 Scalable To Lossless (SLS)
1217:Huffman Codeword Reordering (HCR)
1083:a.k.a. Sample-Rate Scalable (SRS)
8125:
7225:Ultra-high-definition television
2973:Borland, John (March 18, 2004).
2780:"Audio file formats for Spotify"
2515:– a lossless codec developed by
2347:: supports AAC (both LC and HE).
2274:: often used as AAC decoders on
2258:Media Player Classic Home Cinema
2071:: network audio player (made by
2045:: supports playback of AAC files
2028:Multimedia/Photo Storage Viewers
1966:
1824:
1528:
1235:
963:
814:AAC+ v2 is also standardized by
719:(described below), a nonuniform
23:
4712:
4650:
4639:from the original on 2009-12-11
4621:
4610:from the original on 2009-12-11
4592:
4562:
4544:
4515:
4485:
4473:from the original on 2015-09-23
4459:
4447:from the original on 5 May 2017
4429:
4407:
4377:
4347:
4336:from the original on 2021-11-23
4318:
4288:
4276:
4185:
4145:"The xHE-AAC Trademark Program"
4126:from the original on 2010-02-14
4089:
4071:
4053:
4035:
3988:
3967:
3941:
3930:from the original on 2016-08-20
3912:
3901:from the original on 2016-08-19
3883:
3872:from the original on 2016-05-20
3854:
3843:from the original on 2016-03-08
3825:
3741:
3730:from the original on 2014-07-06
3716:
3705:from the original on 2011-06-06
3648:from the original on 2012-01-04
3555:from the original on 2012-01-04
3487:from the original on 2011-06-06
3368:from the original on 2011-06-06
3239:
3229:
3220:
3211:
3171:from the original on 2010-02-18
3142:from the original on 2010-01-05
3127:
2966:
2918:
2905:
2683:Brandenburg, Karlheinz (1999).
2634:from the original on 2012-09-25
2020:: Supports AAC playback in the
1539:needs additional citations for
1419:SBR (Spectral Band Replication)
1313:The AAC patent holders include
877:) than MP3 (16 to 48 kHz);
8065:Error detection and correction
7144:Part 1: Essential Video Coding
7019:Parts 2, 3 and 9: Digital Item
6987:Part 33: Internet Video Coding
6972:Part 17: Streaming text format
6204:ISO/IEC base media file format
4018:"AAC PATENT LICENSE AGREEMENT"
3304:JTC 1/SC 29/WG 11. 15 May 1998
2853:IEEE Transactions on Computers
2772:
2741:
2654:Advanced Audio Coding (MPEG-4)
2645:
2549:
1162:High Efficiency AAC v2 Profile
1152:– defined in 2003, uses AAC-LC
894:higher efficiency and simpler
38:format but may read better as
16:Lossy audio compression format
1:
6913:Part 7: Advanced Audio Coding
4097:"List of AAC related patents"
2942:Guckert, John (Spring 2012).
2574:
2423:, FAAC is not free software.
2205:: also supports LC and HE AAC
1287:free and open source software
1096:MPEG-4 Part 3: Audio Profiles
927:window function to eliminate
909:higher coding efficiency for
776:Perceptual Noise Substitution
639:Part 7 of the MPEG-2 standard
538:
510:, digital audio players like
381:specifications. Part of AAC,
365:AAC has been standardized by
8174:Lossy compression algorithms
7097:Part 1: MPEG media transport
4529:. 2007-12-04. Archived from
4297:"iTunes Store goes DRM-free"
3196:. March 1996. Archived from
2835:10.1016/1051-2004(91)90086-Z
2392:Various tools including the
1887:and later support HE-AAC v2.
1732:Constrained Variable Bitrate
1181:AAC error protection toolkit
635:Moving Picture Experts Group
7:
8138:Comparison of radio systems
4720:"Libav Wiki - Encoding AAC"
4691:"FFmpeg AAC Encoding Guide"
4295:Cohen, Peter (2010-05-27).
4232:. p. 3. Archived from
3672:. 3GPP. 30 September 2004.
3573:Mody, Mihir (6 June 2005).
3452:"Levels for Audio Profiles"
2490:
2383:command-line interface tool
2239:that supports LC and HE AAC
2130:
1718:iTunes information such as
1676:
1485:Audio Data Transport Stream
1369:Extensions and improvements
1246:The audio coding standards
1156:High Efficiency AAC Profile
916:higher coding accuracy for
833:AAC's improvements over MP3
703:profile (AAC-LC / LC-AAC),
220:; 26 years ago
10:
8200:
8111:International broadcasting
8080:FM extended band in Brazil
7215:High-definition television
7076:Part 4: Reference Software
6957:Part 11: Scene description
6860:Part 1: Systems (H.222.0)
6647:Comparison of video codecs
5157:(GB/T 33475.2,GY/T 299.1)
3134:Bouvigne, Gabriel (2003).
2892:, Boston: Academic Press,
2453:
2430:
2411:
2297:' RealAudio 10 AAC encoder
1480:ISO base media file format
1463:
1457:
1239:
1126:High Quality Audio Profile
1093:
1080:Scalable Sample Rate (SSR)
674:ISO/IEC 13818-3: MPEG-2 BC
533:
282:ISO base media file format
243:; 4 years ago
8119:
8098:
8037:
7997:
7976:
7965:
7921:
7878:
7848:
7812:
7777:
7770:
7722:
7651:
7620:
7613:
7550:
7514:
7404:
7383:
7347:
7311:
7279:
7233:
7207:
7157:
7136:
7120:
7089:
7053:
7032:
7011:
6995:
6982:Part 22: Open Font Format
6921:
6853:
6801:
6715:
6660:
6634:
6479:
6453:
6307:
6284:
6256:
6233:
6168:
6159:
6074:
5955:
5944:
5736:
5688:
5665:
5637:
5579:
5541:
5456:
5355:
5344:
5172:
5141:
5092:
5054:
5002:
4885:
4874:
4826:
4821:Links to related articles
2814:Digital Signal Processing
2738:, Retrieved on 2009-08-06
2718:, Retrieved on 2009-08-06
2555:only used on web player,
2528:competitor to AAC and MP3
1911:devices also support AAC.
1704:digital rights management
1520:Products that support AAC
1392:Long Term Predictor (LTP)
1285:It used to be common for
1223:Virtual Codebooks (VCB11)
1011:is applied to each frame.
884:channels in MPEG-2 mode);
545:discrete cosine transform
318:
305:
288:
269:
256:
232:
214:
172:
148:
75:
6967:Part 14: MP4 file format
4762:– home of FAAC and FAAD2
3190:"Florence Press Release"
2542:
2115:Pulse and Echo Smartpens
1871:, phones beginning with
1306:, a community backed by
1289:implementations such as
1205:Error Resilient (ER) AAC
1170:– defined in 2012, uses
150:Internet media type
8090:Shortwave relay station
7989:Audio signal processing
7107:Part 3: MPEG-H 3D Audio
6471:Alliance for Open Media
4748:Fraunhofer audio codecs
4122:. MPEG Audio Subgroup.
2865:10.1109/T-C.1974.223784
2685:"MP3 and AAC Explained"
2328:Windows Media Player 12
1563:"Advanced Audio Coding"
1132:Low Delay Audio Profile
1120:Synthetic Audio Profile
772:MPEG-4 Structured Audio
707:profile (AAC Main) and
448:audio. AAC uses only a
47:converting this article
7984:Audio data compression
5391:MPEG-1 Layer III (MP3)
4766:Official MPEG web site
4193:"ISO/IEC 14496-3:2019"
3975:"AAC Licensing FAQ Q5"
3752:Digital audio encoding
3747:US patent application
2975:"The sound of science"
2484:audiotoolbox encoder.
1745:Other portable players
1656:
1431:Parametric Stereo (PS)
1297:to only distribute in
1108:Scalable Audio Profile
865:Improvements include:
713:temporal noise shaping
709:Scalable Sampling Rate
399:Digital Radio Mondiale
8085:Multipath propagation
7908:MPEG-1 Audio Layer II
7778:Frequency allocations
7653:Frequency allocations
7220:High-definition video
7040:Part 1: MPEG Surround
6876:Part 2: Video (H.262)
6409:QuickTime File Format
4284:MPEG transport stream
4083:src.fedoraproject.org
4065:src.fedoraproject.org
3924:mpeg.chiariglione.org
3136:"MPEG-2/MPEG-4 - AAC"
2155:supports AAC via the
1645:International ISDB-Tb
1398:Error Resilience (ER)
1270:Licensing and patents
1260:Enhanced Low Delay v2
925:Kaiser-Bessel derived
804:Profile (AAC LC with
572:audio coding standard
385:("AAC+"), is part of
342:audio coding standard
334:Advanced Audio Coding
71:Advanced Audio Coding
8038:Technical (emission)
7271:8640p (16K Ultra HD)
7202:High-definition (HD)
6668:Compression software
6225:MPEG media transport
5302:Sorenson Video/Spark
3042:. 1 September 2009.
3034:(Technical report).
2932:(5), 1153–1161, 1986
2043:Digital Media Player
2010:Windows Media Player
1820:third party firmware
1790:PlayStation Portable
1770:(all current models)
1548:improve this article
1349:(and its subsidiary
1114:Speech Audio Profile
1009:Luhn mod N algorithm
855:Audio) and 13818-3 (
840:MPEG-1 Audio Layer 3
785:with MPEG-2 Part 7.
746:ISO/IEC 14496-3:1999
672:, formally known as
657:, formally known as
489:DivX Plus Web Player
420:(up to 96 kHz)
389:and is adopted into
239:ISO/IEC 14496-3:2019
7384:Filming and storage
7266:4320p (8K Ultra HD)
7261:2160p (4K Ultra HD)
7081:Part 5: Conformance
6666:for techniques and
6664:Compression methods
5160:HDR Vivid(GY/T 358)
4527:Adobe press release
3109:. 15 January 2006.
2827:1991DSP.....1....4A
2049:Barnes & Noble
1903:phones running the
1470:In addition to the
1413:High Efficiency AAC
1073:Main Profile (Main)
1067:Low Complexity (LC)
923:possibility to use
783:backward-compatible
167:audio/mpeg4-generic
82:MPEG/3GPP container
72:
4758:2006-08-25 at the
4389:Android Developers
4359:Android Developers
4303:. Mac Publishing.
3996:"AAC License Fees"
2952:University of Utah
2888:; Yip, P. (1990),
2734:2016-04-13 at the
2714:2016-03-03 at the
2509:(container format)
2481:Fraunhofer FDK AAC
2468:, and forked with
2433:Fraunhofer FDK AAC
2427:Fraunhofer FDK AAC
2404:for this encoder.
2375:Nero Digital Audio
2365:Nero Digital Audio
2163:Adobe Flash Player
1858:of these formats.
1256:Enhanced Low Delay
1102:Main Audio Profile
1089:Audio Object Types
998:model and encoded.
911:stationary signals
898:. AAC uses a pure
751:Audio Object Types
595:Dolby Laboratories
555:, was proposed by
434:hi-fi transparency
241:December 2019
218:December 1997
77:Filename extension
70:
49:, if appropriate.
8156:
8155:
8150:
8149:
8146:
8145:
8070:FM broadcast band
7977:Technical (audio)
7874:
7873:
7766:
7765:
7566:
7565:
7312:Digital broadcast
7169:
7168:
6901:MPEG Multichannel
6675:
6674:
6449:
6448:
6367:DivX Media Format
6155:
6154:
5940:
5939:
5340:
5339:
5230:Microsoft Video 1
5165:AVS3 P2(GY/T 368)
5151:(GB/T 20090.2/16)
4558:on April 8, 2007.
3726:. Hydrogenaudio.
3081:on 3 October 2009
2899:978-0-12-580203-1
2565:Microsoft Windows
2396:audio player and
2220:Microsoft Windows
2141:Microsoft Windows
2139:to decode it. On
1892:Nokia XpressMusic
1624:
1623:
1616:
1598:
1513:parametric stereo
1483:format called an
1454:Container formats
918:transient signals
553:lossy compression
547:(DCT), a type of
403:mobile television
331:
330:
270:Contained by
173:Developed by
68:
67:
8191:
8132:Radio portal
8130:
8129:
8128:
8106:History of radio
8050:AM expanded band
7967:
7966:
7850:Commercial radio
7775:
7774:
7618:
7617:
7593:
7586:
7579:
7570:
7569:
7491:Ultra HD Blu-ray
7303:MUSE (Hi-Vision)
7286:
7281:Analog broadcast
7196:
7189:
7182:
7173:
7172:
6864:Transport stream
6808:Part 1: Systems
6702:
6695:
6688:
6679:
6678:
6441:VOB, IFO and BUP
6215:Motion JPEG 2000
6166:
6165:
5953:
5952:
5912:aptX Low Latency
5689:Chinese Standard
5353:
5352:
5142:Chinese Standard
4914:Motion JPEG 2000
4883:
4882:
4853:
4846:
4839:
4830:
4829:
4817:
4816:
4736:
4735:
4733:
4731:
4722:. Archived from
4716:
4710:
4709:
4704:
4702:
4687:
4678:
4677:
4675:
4673:
4654:
4648:
4647:
4645:
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4625:
4619:
4618:
4616:
4615:
4596:
4590:
4589:
4587:
4585:
4566:
4560:
4559:
4554:. Archived from
4548:
4542:
4541:
4539:
4538:
4519:
4513:
4512:
4510:
4508:
4489:
4483:
4481:
4479:
4478:
4463:
4457:
4456:
4454:
4452:
4433:
4427:
4426:
4421:. Archived from
4411:
4405:
4404:
4402:
4400:
4381:
4375:
4374:
4372:
4370:
4351:
4345:
4344:
4342:
4341:
4322:
4316:
4315:
4313:
4312:
4292:
4286:
4280:
4274:
4273:
4271:
4270:
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4249:
4247:
4245:
4244:
4238:
4231:
4220:
4207:
4206:
4204:
4203:
4189:
4183:
4182:
4180:
4179:
4165:
4159:
4158:
4156:
4155:
4141:
4135:
4134:
4132:
4131:
4120:chiariglione.org
4111:
4105:
4104:
4093:
4087:
4086:
4075:
4069:
4068:
4057:
4051:
4050:
4039:
4033:
4032:
4030:
4028:
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4006:
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3992:
3986:
3985:
3983:
3982:
3971:
3965:
3964:
3962:
3955:
3945:
3939:
3938:
3936:
3935:
3916:
3910:
3909:
3907:
3906:
3887:
3881:
3880:
3878:
3877:
3858:
3852:
3851:
3849:
3848:
3829:
3823:
3822:
3820:
3819:
3813:
3806:
3795:
3789:
3788:
3786:
3785:
3779:
3768:
3760:
3754:
3745:
3739:
3738:
3736:
3735:
3720:
3714:
3713:
3711:
3710:
3691:
3685:
3684:
3682:
3681:
3671:
3663:
3657:
3656:
3654:
3653:
3634:
3628:
3627:
3625:
3624:
3618:
3612:. Archived from
3611:
3603:
3594:
3593:
3591:
3590:
3570:
3564:
3563:
3561:
3560:
3541:
3535:
3534:
3532:
3531:
3525:
3505:
3496:
3495:
3493:
3492:
3473:
3467:
3466:
3464:
3463:
3447:
3441:
3440:
3438:
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3431:
3422:
3416:
3415:
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3412:
3406:
3391:
3383:
3377:
3376:
3374:
3373:
3354:
3348:
3347:
3345:
3344:
3335:. Archived from
3333:chiariglione.org
3324:
3313:
3312:
3310:
3309:
3295:
3287:
3281:
3280:
3278:
3277:
3268:. Archived from
3266:chiariglione.org
3257:
3246:
3243:
3237:
3233:
3227:
3224:
3218:
3215:
3209:
3208:
3206:
3205:
3186:
3180:
3179:
3177:
3176:
3167:. October 1998.
3157:
3151:
3150:
3148:
3147:
3131:
3125:
3124:
3122:
3121:
3115:
3104:
3096:
3090:
3089:
3087:
3086:
3077:. Archived from
3067:
3058:
3057:
3055:
3054:
3048:
3033:
3023:
3017:
3016:
3014:
3012:
2998:
2989:
2988:
2986:
2985:
2970:
2964:
2963:
2961:
2959:
2948:
2939:
2933:
2922:
2916:
2909:
2903:
2902:
2882:
2876:
2875:
2845:
2839:
2838:
2807:(January 1991).
2801:
2795:
2794:
2792:
2790:
2776:
2770:
2769:
2767:
2766:
2760:
2753:
2745:
2739:
2725:
2719:
2705:
2699:
2698:
2696:
2690:. Archived from
2689:
2680:
2667:
2666:
2664:
2662:
2649:
2643:
2642:
2640:
2639:
2620:
2611:
2610:
2608:
2606:
2601:. 5 January 2009
2589:
2568:
2553:
2450:FFmpeg and Libav
2330:: released with
2316:VLC media player
1619:
1612:
1608:
1605:
1599:
1597:
1556:
1532:
1524:
1363:Sony Corporation
1248:MPEG-4 Low Delay
1138:Low Delay AAC v2
1054:Modular encoding
929:spectral leakage
822:) as TS 102005.
768:speech synthesis
611:Sony Corporation
549:transform coding
504:PlayStation Vita
324:
311:
251:
249:
244:
228:
226:
221:
165:audio/mp4a-latm
142:
128:
98:
73:
69:
63:
60:
54:
45:You can help by
27:
26:
19:
8199:
8198:
8194:
8193:
8192:
8190:
8189:
8188:
8159:
8158:
8157:
8152:
8151:
8142:
8126:
8124:
8115:
8094:
8075:FM broadcasting
8045:AM broadcasting
8033:
7993:
7972:
7961:
7917:
7870:
7844:
7813:Digital systems
7808:
7793:
7762:
7723:Digital systems
7718:
7647:
7609:
7597:
7567:
7562:
7546:
7510:
7407:
7400:
7379:
7343:
7307:
7293:819 line system
7284:
7283:
7275:
7256:1440p (Quad HD)
7251:1080p (Full HD)
7246:1080i (Full HD)
7229:
7203:
7200:
7170:
7165:
7153:
7132:
7116:
7085:
7049:
7028:
7007:
6991:
6917:
6849:
6797:
6711:
6706:
6676:
6671:
6656:
6630:
6475:
6445:
6303:
6280:
6252:
6229:
6151:
6070:
5968:
5947:
5936:
5732:
5704:(GB/T 33475.3)
5698:(GB/T 20090.10)
5684:
5661:
5633:
5575:
5537:
5452:
5448:MPEG-H 3D Audio
5374:MPEG-1 Layer II
5364:
5347:
5336:
5168:
5137:
5088:
5050:
4998:
4894:
4877:
4870:
4857:
4822:
4760:Wayback Machine
4753:AudioCoding.com
4744:
4739:
4729:
4727:
4718:
4717:
4713:
4700:
4698:
4689:
4688:
4681:
4671:
4669:
4656:
4655:
4651:
4642:
4640:
4633:AudioCoding.com
4627:
4626:
4622:
4613:
4611:
4604:AudioCoding.com
4598:
4597:
4593:
4583:
4581:
4568:
4567:
4563:
4550:
4549:
4545:
4536:
4534:
4521:
4520:
4516:
4506:
4504:
4491:
4490:
4486:
4476:
4474:
4465:
4464:
4460:
4450:
4448:
4435:
4434:
4430:
4413:
4412:
4408:
4398:
4396:
4383:
4382:
4378:
4368:
4366:
4353:
4352:
4348:
4339:
4337:
4324:
4323:
4319:
4310:
4308:
4293:
4289:
4281:
4277:
4268:
4266:
4257:
4256:
4252:
4242:
4240:
4236:
4229:
4221:
4210:
4201:
4199:
4191:
4190:
4186:
4177:
4175:
4167:
4166:
4162:
4153:
4151:
4143:
4142:
4138:
4129:
4127:
4112:
4108:
4095:
4094:
4090:
4077:
4076:
4072:
4059:
4058:
4054:
4041:
4040:
4036:
4026:
4024:
4014:
4010:
4001:
3999:
3998:. Via Licensing
3994:
3993:
3989:
3980:
3978:
3977:. Via Licensing
3973:
3972:
3968:
3960:
3953:
3947:
3946:
3942:
3933:
3931:
3918:
3917:
3913:
3904:
3902:
3889:
3888:
3884:
3875:
3873:
3860:
3859:
3855:
3846:
3844:
3831:
3830:
3826:
3817:
3815:
3811:
3804:
3796:
3792:
3783:
3781:
3780:on 13 July 2011
3777:
3766:
3762:
3761:
3757:
3746:
3742:
3733:
3731:
3722:
3721:
3717:
3708:
3706:
3693:
3692:
3688:
3679:
3677:
3669:
3665:
3664:
3660:
3651:
3649:
3636:
3635:
3631:
3622:
3620:
3616:
3609:
3605:
3604:
3597:
3588:
3586:
3571:
3567:
3558:
3556:
3543:
3542:
3538:
3529:
3527:
3523:
3507:
3506:
3499:
3490:
3488:
3475:
3474:
3470:
3461:
3459:
3448:
3444:
3435:
3433:
3429:
3423:
3419:
3410:
3408:
3404:
3389:
3385:
3384:
3380:
3371:
3369:
3356:
3355:
3351:
3342:
3340:
3325:
3316:
3307:
3305:
3293:
3289:
3288:
3284:
3275:
3273:
3258:
3249:
3244:
3240:
3234:
3230:
3225:
3221:
3216:
3212:
3203:
3201:
3188:
3187:
3183:
3174:
3172:
3159:
3158:
3154:
3145:
3143:
3132:
3128:
3119:
3117:
3113:
3102:
3098:
3097:
3093:
3084:
3082:
3069:
3068:
3061:
3052:
3050:
3046:
3031:
3025:
3024:
3020:
3010:
3008:
3002:"AAC Licensors"
3000:
2999:
2992:
2983:
2981:
2971:
2967:
2957:
2955:
2946:
2940:
2936:
2923:
2919:
2910:
2906:
2900:
2883:
2879:
2846:
2842:
2802:
2798:
2788:
2786:
2778:
2777:
2773:
2764:
2762:
2758:
2751:
2747:
2746:
2742:
2736:Wayback Machine
2726:
2722:
2716:Wayback Machine
2706:
2702:
2694:
2687:
2681:
2670:
2660:
2658:
2651:
2650:
2646:
2637:
2635:
2621:
2614:
2604:
2602:
2591:
2590:
2581:
2577:
2572:
2571:
2554:
2550:
2545:
2493:
2458:
2452:
2435:
2429:
2416:
2410:
2367:
2311:Sony SonicStage
2133:
1969:
1827:
1747:
1686:In April 2003,
1684:
1682:iTunes and iPod
1679:
1659:
1647:
1634:
1632:Japanese ISDB-T
1629:
1620:
1609:
1603:
1600:
1557:
1555:
1545:
1533:
1522:
1468:
1462:
1456:
1371:
1272:
1258:(AAC-ELD), and
1244:
1238:
1207:
1183:
1098:
1056:
966:
835:
684:audio formats (
651:
649:Standardization
541:
536:
432:mode; however,
373:as part of the
319:
306:
300:ISO/IEC 14496-3
298:
295:ISO/IEC 13818-7
252:
247:
245:
242:
240:
224:
222:
219:
215:Initial release
168:
166:
164:
162:
160:
158:
156:
138:
108:
103:Apple container
86:
64:
58:
55:
44:
28:
24:
17:
12:
11:
5:
8197:
8187:
8186:
8181:
8176:
8171:
8154:
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8148:
8147:
8144:
8143:
8141:
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8120:
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8108:
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8100:
8096:
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8067:
8062:
8057:
8052:
8047:
8041:
8039:
8035:
8034:
8032:
8031:
8026:
8024:Kahn-Hazeltine
8021:
8016:
8011:
8005:
8003:
7995:
7994:
7992:
7991:
7986:
7980:
7978:
7974:
7973:
7971:Related topics
7963:
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7959:
7954:
7949:
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7928:
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7524:
7518:
7516:
7512:
7511:
7509:
7508:
7503:
7498:
7493:
7488:
7486:Super Audio CD
7483:
7478:
7476:MUSE LaserDisc
7473:
7468:
7463:
7458:
7453:
7448:
7443:
7438:
7433:
7428:
7423:
7418:
7412:
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7402:
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7399:
7398:
7393:
7387:
7385:
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7380:
7378:
7377:
7372:
7367:
7362:
7360:Surround sound
7357:
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7342:
7341:
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7009:
7008:
7006:
7005:
6999:
6997:
6993:
6992:
6990:
6989:
6984:
6979:
6977:Part 20: LASeR
6974:
6969:
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6959:
6954:
6949:
6944:
6939:
6938:
6937:
6925:
6923:
6919:
6918:
6916:
6915:
6910:
6908:Part 6: DSM CC
6905:
6904:
6903:
6898:
6893:
6888:
6878:
6873:
6872:
6871:
6869:Program stream
6866:
6857:
6855:
6851:
6850:
6848:
6847:
6846:
6845:
6840:
6835:
6829:Part 3: Audio
6827:
6826:
6825:
6818:Part 2: Video
6816:
6815:
6814:
6812:Program stream
6805:
6803:
6799:
6798:
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6705:
6704:
6697:
6690:
6682:
6673:
6672:
6661:
6658:
6657:
6655:
6654:
6652:List of codecs
6649:
6644:
6638:
6636:
6632:
6631:
6629:
6628:
6627:
6626:
6625:
6624:
6619:
6609:
6604:
6599:
6589:
6588:
6587:
6582:
6577:
6572:
6562:
6561:
6560:
6555:
6545:
6540:
6535:
6534:
6533:
6528:
6523:
6518:
6508:
6507:
6506:
6501:
6496:
6485:
6483:
6477:
6476:
6474:
6473:
6468:
6463:
6457:
6455:
6454:Collaborations
6451:
6450:
6447:
6446:
6444:
6443:
6438:
6433:
6432:
6431:
6421:
6416:
6411:
6406:
6405:
6404:
6394:
6389:
6384:
6379:
6374:
6369:
6364:
6359:
6358:
6357:
6347:
6342:
6337:
6332:
6327:
6322:
6317:
6311:
6309:
6305:
6304:
6302:
6301:
6296:
6290:
6288:
6282:
6281:
6279:
6278:
6273:
6268:
6262:
6260:
6254:
6253:
6251:
6250:
6245:
6239:
6237:
6231:
6230:
6228:
6227:
6222:
6220:MPEG-21 Part 9
6217:
6212:
6209:MPEG-4 Part 14
6206:
6201:
6196:
6191:
6190:
6189:
6178:
6176:
6163:
6157:
6156:
6153:
6152:
6150:
6149:
6144:
6139:
6134:
6129:
6124:
6119:
6114:
6109:
6104:
6099:
6094:
6089:
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6071:
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6068:
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6028:
6023:
6018:
6013:
6008:
6003:
5998:
5993:
5988:
5982:
5980:
5950:
5942:
5941:
5938:
5937:
5935:
5934:
5929:
5924:
5919:
5914:
5909:
5904:
5899:
5894:
5889:
5884:
5879:
5874:
5869:
5868:
5867:
5861:
5856:
5851:
5846:
5841:
5836:
5831:
5826:
5821:
5816:
5811:
5806:
5801:
5796:
5791:
5789:Monkey's Audio
5786:
5781:
5776:
5771:
5766:
5761:
5756:
5751:
5746:
5740:
5738:
5734:
5733:
5731:
5730:
5729:(SJ/T 11299.4)
5724:
5719:
5713:
5712:
5711:
5699:
5692:
5690:
5686:
5685:
5683:
5682:
5677:
5671:
5669:
5663:
5662:
5660:
5659:
5654:
5649:
5643:
5641:
5635:
5634:
5632:
5631:
5626:
5621:
5616:
5611:
5606:
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5596:
5591:
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5577:
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5574:
5573:
5568:
5563:
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5553:
5547:
5545:
5539:
5538:
5536:
5535:
5530:
5525:
5520:
5515:
5510:
5505:
5500:
5495:
5490:
5485:
5480:
5479:
5478:
5473:
5462:
5460:
5454:
5453:
5451:
5450:
5445:
5440:
5435:
5430:
5425:
5420:
5415:
5410:
5409:
5408:
5403:
5393:
5388:
5386:MPEG-1 Layer I
5383:
5382:
5381:
5370:
5368:
5350:
5342:
5341:
5338:
5337:
5335:
5334:
5329:
5324:
5319:
5314:
5309:
5304:
5299:
5294:
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5284:
5279:
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5272:
5264:
5263:
5262:
5257:
5247:
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5237:
5232:
5227:
5222:
5217:
5212:
5207:
5202:
5197:
5192:
5187:
5182:
5176:
5174:
5170:
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5162:
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5152:
5145:
5143:
5139:
5138:
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5135:
5130:
5125:
5120:
5115:
5110:
5105:
5099:
5097:
5090:
5089:
5087:
5086:
5081:
5076:
5071:
5066:
5060:
5058:
5052:
5051:
5049:
5048:
5043:
5038:
5033:
5028:
5023:
5018:
5012:
5010:
5000:
4999:
4997:
4996:
4995:
4994:
4992:Part 2 / LCEVC
4989:
4979:
4978:
4977:
4967:
4966:
4965:
4955:
4954:
4953:
4948:
4943:
4933:
4932:
4931:
4921:
4916:
4911:
4906:
4900:
4898:
4880:
4872:
4871:
4856:
4855:
4848:
4841:
4833:
4827:
4824:
4823:
4814:
4813:
4803:
4793:
4783:
4773:
4768:
4763:
4750:
4743:
4742:External links
4740:
4738:
4737:
4711:
4679:
4649:
4620:
4591:
4561:
4543:
4514:
4484:
4458:
4428:
4425:on 2011-05-24.
4406:
4376:
4346:
4317:
4287:
4275:
4250:
4208:
4184:
4160:
4136:
4106:
4101:hydrogenaud.io
4088:
4070:
4052:
4034:
4008:
3987:
3966:
3940:
3911:
3882:
3853:
3824:
3790:
3755:
3740:
3715:
3686:
3658:
3629:
3595:
3565:
3536:
3526:on 12 May 2014
3497:
3468:
3442:
3417:
3378:
3349:
3314:
3282:
3247:
3238:
3228:
3219:
3210:
3181:
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3126:
3091:
3059:
3018:
2990:
2965:
2934:
2917:
2904:
2898:
2877:
2840:
2796:
2771:
2740:
2720:
2700:
2697:on 2017-02-13.
2668:
2644:
2612:
2578:
2576:
2573:
2570:
2569:
2547:
2546:
2544:
2541:
2540:
2539:
2529:
2519:
2510:
2507:MPEG-4 Part 14
2504:
2499:
2492:
2489:
2451:
2448:
2431:Main article:
2428:
2425:
2412:Main article:
2409:
2408:FAAC and FAAD2
2406:
2400:can provide a
2379:Nero AAC Codec
2366:
2363:
2355:
2354:
2348:
2342:
2337:Another Real:
2335:
2325:
2319:
2313:
2308:
2298:
2288:
2282:
2265:
2260:
2255:
2250:
2245:
2240:
2223:
2206:
2200:
2151:based player.
2132:
2129:
2128:
2127:
2118:
2109:
2096:
2088:
2080:
2064:
2055:
2046:
2037:
2029:
2013:
2005:Windows Mobile
2001:
1982:
1968:
1965:
1964:
1963:
1951:
1943:
1935:
1919:
1912:
1896:
1888:
1826:
1823:
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1804:
1798:
1793:
1787:
1784:Philips GoGear
1781:
1776:
1771:
1765:
1759:
1753:
1746:
1743:
1683:
1680:
1678:
1675:
1658:
1655:
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1633:
1630:
1628:
1627:HDTV Standards
1625:
1622:
1621:
1604:September 2017
1536:
1534:
1527:
1521:
1518:
1458:Main article:
1455:
1452:
1451:
1450:
1442:
1434:
1422:
1409:
1401:
1395:
1389:
1370:
1367:
1335:LG Electronics
1304:Fedora Project
1271:
1268:
1240:Main article:
1237:
1234:
1233:
1232:
1226:
1220:
1206:
1203:
1202:
1201:
1197:
1194:
1182:
1179:
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1174:
1165:
1159:
1153:
1147:
1141:
1135:
1129:
1123:
1117:
1111:
1105:
1094:Main article:
1085:
1084:
1076:
1070:
1055:
1052:
1051:
1050:
1047:
1040:
1039:
1032:
1029:
1013:
1012:
1005:
1002:
999:
996:psychoacoustic
992:
981:
980:
977:
970:wideband audio
965:
962:
950:
949:
942:
937:more flexible
935:
932:
921:
914:
907:
892:
885:
878:
873:(from 8 to 96
834:
831:
727:uses a 4-band
701:Low-Complexity
650:
647:
599:LG Electronics
591:Fraunhofer IIS
540:
537:
535:
532:
422:audio channels
329:
328:
325:
316:
315:
312:
303:
302:
292:
286:
285:
274:MPEG-4 Part 14
271:
267:
266:
258:
257:Type of format
254:
253:
238:
236:
234:Latest release
230:
229:
216:
212:
211:
197:LG Electronics
174:
170:
169:
154:
152:
146:
145:
144:
143:
130:
129:
100:
99:
79:
66:
65:
31:
29:
22:
15:
9:
6:
4:
3:
2:
8196:
8185:
8182:
8180:
8177:
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8112:
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8097:
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8088:
8086:
8083:
8081:
8078:
8076:
8073:
8071:
8068:
8066:
8063:
8061:
8060:Digital radio
8058:
8056:
8053:
8051:
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8046:
8043:
8042:
8040:
8036:
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8027:
8025:
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7751:
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7707:
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7662:
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7658:
7656:
7654:
7650:
7644:
7641:
7639:
7636:
7634:
7631:
7630:
7628:
7626:
7623:
7619:
7616:
7612:
7608:
7605:
7604:digital audio
7601:
7594:
7589:
7587:
7582:
7580:
7575:
7574:
7571:
7559:
7556:
7555:
7553:
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7530:
7528:
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7520:
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7513:
7507:
7504:
7502:
7499:
7497:
7494:
7492:
7489:
7487:
7484:
7482:
7479:
7477:
7474:
7472:
7469:
7467:
7464:
7462:
7459:
7457:
7454:
7452:
7449:
7447:
7444:
7442:
7439:
7437:
7434:
7432:
7429:
7427:
7424:
7422:
7419:
7417:
7416:Archival Disc
7414:
7413:
7411:
7409:
7403:
7397:
7394:
7392:
7389:
7388:
7386:
7382:
7376:
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7355:Dolby Digital
7353:
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7337:
7335:
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7327:
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7316:
7314:
7310:
7304:
7301:
7299:
7296:
7294:
7291:
7290:
7288:
7285:(All defunct)
7282:
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7017:
7016:
7014:
7012:MPEG-21 Parts
7010:
7004:
7001:
7000:
6998:
6994:
6988:
6985:
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6980:
6978:
6975:
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6968:
6965:
6963:
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6955:
6953:
6950:
6948:
6945:
6943:
6942:Part 3: Audio
6940:
6936:
6932:
6931:
6930:
6929:Part 2: Video
6927:
6926:
6924:
6920:
6914:
6911:
6909:
6906:
6902:
6899:
6897:
6894:
6892:
6889:
6887:
6884:
6883:
6882:
6881:Part 3: Audio
6879:
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6014:
6012:
6009:
6007:
6004:
6002:
5999:
5997:
5994:
5992:
5989:
5987:
5986:CCITT Group 4
5984:
5983:
5981:
5979:
5975:
5971:
5966:
5962:
5958:
5954:
5951:
5949:
5943:
5933:
5930:
5928:
5925:
5923:
5920:
5918:
5917:aptX Adaptive
5915:
5913:
5910:
5908:
5905:
5903:
5900:
5898:
5895:
5893:
5890:
5888:
5885:
5883:
5880:
5878:
5875:
5873:
5870:
5865:
5864:
5862:
5860:
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5855:
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5850:
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5842:
5840:
5837:
5835:
5832:
5830:
5827:
5825:
5822:
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5817:
5815:
5812:
5810:
5807:
5805:
5802:
5800:
5797:
5795:
5792:
5790:
5787:
5785:
5782:
5780:
5777:
5775:
5772:
5770:
5767:
5765:
5762:
5760:
5757:
5755:
5752:
5750:
5747:
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5735:
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5723:
5720:
5717:
5714:
5709:
5706:
5705:
5703:
5700:
5697:
5694:
5693:
5691:
5687:
5681:
5678:
5676:
5673:
5672:
5670:
5668:
5667:Bluetooth SIG
5664:
5658:
5655:
5653:
5650:
5648:
5645:
5644:
5642:
5640:
5636:
5630:
5627:
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5477:
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5464:
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5441:
5439:
5436:
5434:
5431:
5429:
5426:
5424:
5421:
5419:
5416:
5414:
5413:MPEG Surround
5411:
5407:
5404:
5402:
5399:
5398:
5397:
5394:
5392:
5389:
5387:
5384:
5380:
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5280:
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5027:
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5014:
5013:
5011:
5009:
5005:
5001:
4993:
4990:
4988:
4985:
4984:
4983:
4980:
4976:
4973:
4972:
4971:
4968:
4964:
4963:Part 2 / HEVC
4961:
4960:
4959:
4956:
4952:
4951:Part 33 / IVC
4949:
4947:
4946:Part 10 / AVC
4944:
4942:
4939:
4938:
4937:
4934:
4930:
4927:
4926:
4925:
4922:
4920:
4917:
4915:
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4907:
4905:
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4818:
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4807:
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4791:
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4777:
4774:
4772:
4769:
4767:
4764:
4761:
4757:
4754:
4751:
4749:
4746:
4745:
4726:on 2016-04-20
4725:
4721:
4715:
4708:
4696:
4692:
4686:
4684:
4667:
4663:
4659:
4653:
4638:
4634:
4630:
4624:
4609:
4605:
4601:
4595:
4579:
4575:
4571:
4565:
4557:
4553:
4547:
4533:on 2014-08-21
4532:
4528:
4524:
4518:
4502:
4498:
4497:www.adobe.com
4494:
4488:
4472:
4468:
4462:
4446:
4442:
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4424:
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4416:
4410:
4394:
4390:
4386:
4380:
4364:
4360:
4356:
4350:
4335:
4331:
4330:Hydrogenaudio
4327:
4321:
4306:
4302:
4298:
4291:
4285:
4279:
4264:
4260:
4254:
4239:on 2003-12-19
4235:
4228:
4227:
4219:
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4215:
4213:
4198:
4194:
4188:
4174:
4170:
4164:
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4117:
4110:
4102:
4098:
4092:
4084:
4080:
4074:
4066:
4062:
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4048:
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4023:
4019:
4012:
3997:
3991:
3976:
3970:
3959:
3952:
3951:
3944:
3929:
3925:
3921:
3915:
3900:
3896:
3892:
3886:
3871:
3867:
3863:
3857:
3842:
3838:
3834:
3828:
3814:on 2007-06-10
3810:
3803:
3802:
3794:
3776:
3772:
3765:
3759:
3753:
3750:
3744:
3729:
3725:
3719:
3704:
3700:
3696:
3690:
3675:
3668:
3662:
3647:
3643:
3639:
3633:
3619:on 2006-10-26
3615:
3608:
3602:
3600:
3584:
3580:
3576:
3569:
3554:
3550:
3546:
3540:
3522:
3518:
3514:
3510:
3504:
3502:
3486:
3482:
3478:
3472:
3458:on 2010-01-08
3457:
3453:
3446:
3428:
3421:
3407:on 2012-08-01
3403:
3399:
3395:
3388:
3382:
3367:
3363:
3359:
3353:
3339:on 2010-02-19
3338:
3334:
3330:
3323:
3321:
3319:
3303:
3299:
3292:
3286:
3272:on 2010-07-17
3271:
3267:
3263:
3256:
3254:
3252:
3242:
3232:
3223:
3214:
3200:on 2010-04-08
3199:
3195:
3191:
3185:
3170:
3166:
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3141:
3137:
3130:
3112:
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3003:
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2854:
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2844:
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2832:
2828:
2824:
2820:
2816:
2815:
2810:
2806:
2800:
2785:
2781:
2775:
2761:on 2023-09-28
2757:
2750:
2744:
2737:
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2724:
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2713:
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2693:
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2673:
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2655:
2648:
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2629:
2625:
2619:
2617:
2600:
2599:
2598:Business Wire
2594:
2588:
2586:
2584:
2579:
2566:
2562:
2558:
2552:
2548:
2537:
2533:
2530:
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2511:
2508:
2505:
2503:
2500:
2498:
2495:
2494:
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2485:
2482:
2477:
2475:
2471:
2467:
2463:
2457:
2447:
2444:
2440:
2434:
2424:
2422:
2421:free software
2415:
2405:
2403:
2399:
2395:
2390:
2388:
2384:
2380:
2376:
2372:
2369:In May 2006,
2362:
2360:
2352:
2349:
2346:
2343:
2340:
2336:
2333:
2329:
2326:
2323:
2320:
2317:
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2238:
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2214:
2210:
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2204:
2201:
2198:
2195:
2194:
2193:
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2188:
2184:
2179:
2177:
2174:
2171:
2166:
2164:
2160:
2158:
2154:
2150:
2146:
2142:
2138:
2125:
2124:
2119:
2116:
2114:
2110:
2106:
2105:Photo Channel
2102:
2101:
2097:
2094:
2093:
2089:
2086:
2085:
2084:PlayStation 3
2081:
2078:
2074:
2070:
2069:
2065:
2062:
2061:
2056:
2053:
2052:
2047:
2044:
2042:
2038:
2035:
2034:
2030:
2027:
2023:
2019:
2018:
2014:
2011:
2007:
2006:
2002:
1999:
1995:
1991:
1990:
1987:
1983:
1980:
1979:
1975:
1971:
1970:
1967:Other devices
1961:
1957:
1956:
1955:Windows Phone
1952:
1949:
1948:
1944:
1941:
1940:
1936:
1933:
1929:
1928:
1924:
1920:
1918:
1917:
1913:
1910:
1909:BlackBerry OS
1906:
1905:BlackBerry 10
1902:
1901:
1897:
1894:
1893:
1889:
1886:
1882:
1878:
1874:
1870:
1866:
1865:
1864:Sony Ericsson
1861:
1860:
1859:
1856:
1852:
1848:
1844:
1843:Sony Ericsson
1840:
1836:
1832:
1825:Mobile phones
1819:
1815:
1813:
1810:
1808:
1805:
1803:(some models)
1802:
1801:SanDisk Sansa
1799:
1797:
1794:
1791:
1788:
1785:
1782:
1780:
1777:
1775:
1772:
1769:
1766:
1763:
1760:
1757:
1754:
1752:
1749:
1748:
1742:
1740:
1735:
1733:
1728:
1725:
1721:
1720:album artwork
1715:
1713:
1709:
1705:
1701:
1697:
1693:
1689:
1674:
1672:
1668:
1664:
1654:
1652:
1642:
1639:
1618:
1615:
1607:
1596:
1593:
1589:
1586:
1582:
1579:
1575:
1572:
1568:
1565: –
1564:
1560:
1559:Find sources:
1553:
1549:
1543:
1542:
1537:This section
1535:
1531:
1526:
1525:
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1498:
1497:MPEG-4 Part 3
1494:
1493:MPEG-2 Part 7
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1243:
1236:AAC Low Delay
1230:
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971:
964:Functionality
961:
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828:
827:MPEG-4 Part 3
823:
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779:
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747:
743:
739:
738:
737:MPEG-4 Part 3
732:
730:
726:
722:
718:
717:Kaiser window
714:
710:
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702:
697:
695:
691:
687:
683:
679:
675:
671:
670:MPEG-2 Part 3
667:
665:
661:
656:
655:MPEG-2 Part 7
646:
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583:
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580:Lars Liljeryd
577:
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493:PlayStation 4
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391:digital radio
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349:digital audio
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62:
53:is available.
52:
48:
42:
41:
37:
32:This article
30:
21:
20:
8169:Audio codecs
8123:
7887:
7607:broadcasting
7496:Uncompressed
7406:HD media and
7137:MPEG-5 Parts
7121:MPEG-I Parts
7090:MPEG-H Parts
7071:Part 3: APIs
7054:MPEG-G Parts
7033:MPEG-D Parts
6996:MPEG-7 Parts
6947:Part 6: DMIF
6922:MPEG-4 Parts
6912:
6854:MPEG-2 Parts
6802:MPEG-1 Parts
5718:(GB/T 22726)
5395:
5379:Multichannel
5235:MSU Lossless
5149:AVS1 P2/AVS+
5103:TrueMotion S
5041:H.265 / HEVC
4987:Part 1 / EVC
4975:Part 3 / VVC
4941:Part 2 / ASP
4728:. Retrieved
4724:the original
4714:
4706:
4699:. Retrieved
4670:. Retrieved
4661:
4652:
4641:. Retrieved
4632:
4623:
4612:. Retrieved
4603:
4594:
4582:. Retrieved
4573:
4564:
4556:the original
4546:
4535:. Retrieved
4531:the original
4526:
4517:
4505:. Retrieved
4496:
4487:
4475:. Retrieved
4461:
4449:. Retrieved
4441:nintendo.com
4440:
4431:
4423:the original
4418:
4409:
4397:. Retrieved
4388:
4379:
4367:. Retrieved
4358:
4349:
4338:. Retrieved
4320:
4309:. Retrieved
4300:
4290:
4278:
4267:. Retrieved
4253:
4241:. Retrieved
4234:the original
4225:
4200:. Retrieved
4196:
4187:
4176:. Retrieved
4172:
4163:
4152:. Retrieved
4148:
4139:
4128:. Retrieved
4119:
4109:
4100:
4091:
4082:
4073:
4064:
4055:
4046:
4037:
4025:. Retrieved
4021:
4011:
4000:. Retrieved
3990:
3979:. Retrieved
3969:
3949:
3943:
3932:. Retrieved
3923:
3914:
3903:. Retrieved
3894:
3885:
3874:. Retrieved
3865:
3856:
3845:. Retrieved
3836:
3827:
3816:. Retrieved
3809:the original
3800:
3793:
3782:. Retrieved
3775:the original
3758:
3751:
3743:
3732:. Retrieved
3718:
3707:. Retrieved
3689:
3678:. Retrieved
3661:
3650:. Retrieved
3632:
3621:. Retrieved
3614:the original
3587:. Retrieved
3579:Embedded.com
3578:
3568:
3557:. Retrieved
3539:
3528:. Retrieved
3521:the original
3489:. Retrieved
3471:
3460:. Retrieved
3456:the original
3445:
3434:. Retrieved
3420:
3409:. Retrieved
3402:the original
3381:
3370:. Retrieved
3352:
3341:. Retrieved
3337:the original
3332:
3306:. Retrieved
3285:
3274:. Retrieved
3270:the original
3265:
3241:
3231:
3222:
3213:
3202:. Retrieved
3198:the original
3184:
3173:. Retrieved
3155:
3144:. Retrieved
3138:. MP3'Tech.
3129:
3118:. Retrieved
3094:
3083:. Retrieved
3079:the original
3074:
3051:. Retrieved
3027:
3021:
3009:. Retrieved
3005:
2982:. Retrieved
2978:
2968:
2956:. Retrieved
2950:
2937:
2929:
2925:
2920:
2912:
2907:
2889:
2880:
2859:(1): 90–93,
2856:
2852:
2849:Ahmed, Nasir
2843:
2818:
2812:
2805:Ahmed, Nasir
2799:
2789:20 September
2787:. Retrieved
2783:
2774:
2763:. Retrieved
2756:the original
2743:
2723:
2703:
2692:the original
2659:. Retrieved
2653:
2647:
2636:. Retrieved
2603:. Retrieved
2596:
2561:Amazon Alexa
2551:
2536:royalty-free
2526:royalty-free
2486:
2478:
2459:
2436:
2417:
2391:
2374:
2368:
2356:
2295:RealNetworks
2233:audio player
2191:
2180:
2167:
2161:
2134:
2120:
2111:
2098:
2090:
2082:
2073:Slim Devices
2066:
2057:
2048:
2039:
2031:
2015:
2003:
1994:Pocket Tunes
1984:
1972:
1953:
1945:
1937:
1921:
1914:
1898:
1890:
1862:
1847:BenQ-Siemens
1828:
1796:Samsung YEPP
1779:Nintendo DSi
1774:Nintendo 3DS
1762:Creative Zen
1736:
1729:
1724:peer-to-peer
1716:
1712:iTunes Store
1685:
1660:
1648:
1635:
1610:
1601:
1591:
1584:
1577:
1570:
1558:
1546:Please help
1541:verification
1538:
1488:
1484:
1469:
1444:
1436:
1424:
1411:
1403:
1397:
1391:
1386:pseudorandom
1377:
1372:
1312:
1284:
1277:
1273:
1259:
1255:
1247:
1245:
1228:
1222:
1216:
1211:
1208:
1188:
1184:
1176:
1167:
1161:
1155:
1149:
1143:
1137:
1131:
1125:
1119:
1113:
1107:
1101:
1086:
1078:
1072:
1066:
1061:
1057:
1041:
1014:
982:
967:
958:file-sharing
955:
951:
939:joint stereo
871:sample rates
864:
861:
851:in 11172-3 (
838:
836:
824:
813:
810:
799:
787:
780:
775:
749:
745:
742:MPEG-4 Audio
741:
735:
733:
708:
704:
700:
698:
677:
673:
669:
666:13818-7:1997
658:
654:
652:
642:
638:
584:
542:
530:web player.
516:SanDisk Clip
512:Sony Walkman
495:and various
477:Nintendo 3DS
473:Nintendo DSi
458:
430:joint stereo
415:
387:MPEG-4 Audio
364:
337:
333:
332:
161:audio/3gpp2
132:
131:
102:
101:
81:
56:
51:Editing help
33:
8055:Cable radio
7998:Technical (
7758:DVB-T2 Lite
7614:Terrestrial
7551:Deployments
7527:DisplayPort
7408:compression
7234:Resolutions
6436:MOD and TOD
6377:Flash Video
6315:3GP and 3G2
5996:HEIC / HEIF
5948:compression
5708:Audio Vivid
5443:MPEG-D USAC
5438:MPEG-4 CELP
5433:MPEG-4 HVXC
5348:compression
5180:Apple Video
5096:and AOMedia
5046:H.266 / VVC
5036:H.264 / AVC
4878:compression
4863:compression
4326:"Apple AAC"
4022:www.sec.gov
3749:20070297624
2727:ISO (2006)
2707:ISO (2006)
2557:Google Home
2534:– an open,
2293:: includes
2248:MediaMonkey
2218:filter for
2213:open source
2197:3ivx MPEG-4
2173:open source
2159:libraries.
2060:SoundBridge
2033:Sony Reader
1960:Silverlight
1380:, added in
1331:JVC Kenwood
1299:source code
1200:datastream.
1150:AAC Profile
896:filter bank
715:(TNS), the
619:JVC Kenwood
557:Nasir Ahmed
481:Apple Music
352:compression
321:Free format
308:Open format
278:3GP and 3G2
159:audio/3gpp
157:audio/aacp
133:ADTS stream
8163:Categories
7937:DirectBand
7923:Subcarrier
7625:modulation
7515:Connectors
6670:for codecs
6617:Daubechies
6592:Transforms
6494:Arithmetic
6161:Containers
5866:True Audio
5710:(GY/T 363)
5428:MPEG-4 DST
5423:MPEG-4 SLS
5418:MPEG-4 ALS
5292:SheerVideo
5266:QuickTime
5094:TrueMotion
4860:Multimedia
4662:ffmpeg.org
4643:2009-11-03
4614:2009-11-03
4537:2014-08-20
4477:2015-09-22
4340:2021-11-22
4311:2009-02-10
4269:2008-07-31
4243:2008-07-31
4202:2022-02-19
4178:2020-07-11
4154:2021-02-11
4130:2009-10-06
4047:ffmpeg.org
4002:2020-01-15
3981:2020-01-15
3934:2016-08-02
3905:2016-08-02
3876:2016-08-02
3847:2016-08-03
3818:2009-10-09
3784:2009-10-19
3734:2011-01-24
3709:2009-10-07
3680:2009-10-13
3652:2009-10-13
3623:2007-01-29
3589:2009-10-13
3559:2009-10-13
3530:2009-10-09
3491:2009-10-07
3462:2009-10-15
3436:2009-10-07
3411:2009-10-07
3372:2009-10-07
3343:2009-10-06
3308:2009-10-07
3276:2009-10-06
3204:2009-10-28
3175:2009-10-28
3146:2009-10-28
3120:2009-10-28
3085:2009-10-28
3053:2009-10-07
3011:15 January
2984:2023-04-21
2886:Rao, K. R.
2821:(1): 4–5.
2765:2024-01-29
2661:1 December
2638:2010-07-18
2575:References
2466:libavcodec
2454:See also:
2439:Fraunhofer
2398:MediaCoder
2394:foobar2000
2291:RealPlayer
2226:foobar2000
2216:DirectShow
2203:CorePlayer
2149:DirectShow
2145:DirectShow
2123:Chromecast
2113:Livescribe
2068:Squeezebox
2051:Nook Color
1900:BlackBerry
1855:Nokia 5510
1710:) via the
1574:newspapers
1464:See also:
1351:NTT Docomo
1327:Fraunhofer
887:arbitrary
678:MPEG-2 NBC
539:Background
524:BlackBerry
405:standards
393:standards
205:NTT Docomo
181:Fraunhofer
163:audio/mp4
155:audio/aac
8000:AM stereo
7859:Sirius XM
7852:providers
7771:Satellite
7522:Component
7441:DVD-Audio
7241:720p (HD)
7163:MPEG-DASH
6933:based on
6896:Layer III
6843:Layer III
6821:based on
6419:RealMedia
6021:JPEG 2000
5824:RealAudio
5804:OptimFROG
5282:RealVideo
5270:Animation
5240:OMS Video
4867:container
2873:149806273
2359:SHOUTcast
2332:Windows 7
2280:Macintosh
2211:: a free
2187:Xbox Live
2157:QuickTime
1667:DVB suite
1426:HE-AAC v2
1355:Panasonic
1339:Microsoft
1315:Bell Labs
968:AAC is a
889:bit rates
721:quantizer
627:Microsoft
607:Panasonic
587:Bell Labs
561:K. R. Rao
500:Series 40
418:bandwidth
209:Panasonic
59:June 2024
8099:Cultural
8029:Magnavox
8002:formats)
7952:SCA/SCMO
7947:RDS/RBDS
7750:HD Radio
7740:DRM/DRM+
7735:DAB/DAB+
7208:Concepts
6891:Layer II
6838:Layer II
6538:Lossless
6504:Modified
6397:Matroska
6276:Matroska
6187:MPEG-PES
5799:Musepack
5696:AVS1 P10
5275:Graphics
5225:Lagarith
4756:Archived
4730:11 April
4701:11 April
4695:Archived
4666:Archived
4637:Archived
4608:Archived
4578:Archived
4501:Archived
4471:Archived
4445:Archived
4419:Palm USA
4393:Archived
4363:Archived
4334:Archived
4305:Archived
4301:Macworld
4263:Archived
4124:Archived
4027:21 April
3958:Archived
3928:Archived
3899:Archived
3870:Archived
3841:Archived
3728:Archived
3703:Archived
3701:. 2009.
3674:Archived
3646:Archived
3644:. 2004.
3583:Archived
3553:Archived
3551:. 2006.
3485:Archived
3483:. 2003.
3366:Archived
3364:. 2000.
3169:Archived
3140:Archived
3111:Archived
3075:MPEG.ORG
3044:Archived
3006:Via Corp
2732:Archived
2712:Archived
2632:Archived
2626:(1997).
2491:See also
2339:Rhapsody
2305:Mac OS X
2301:Songbird
2285:MusicBee
2243:KMPlayer
2230:freeware
2183:Xbox 360
2176:firmware
2153:Mac OS X
2131:Software
2092:Xbox 360
2077:Logitech
1835:Motorola
1764:Portable
1708:FairPlay
1700:firmware
1677:Hardware
1415:(HE-AAC)
859:Audio).
411:ATSC-M/H
360:bit rate
340:) is an
290:Standard
7925:signals
7893:AMR-WB+
7745:FMeXtra
7426:Blu-ray
7324:DMB-T/H
6886:Layer I
6833:Layer I
6612:Wavelet
6553:DEFLATE
6499:Huffman
6489:Entropy
6481:Methods
6466:MPEG LA
6355:Smacker
6243:H.222.0
6199:MPEG-TS
6194:MPEG-PS
6182:MPEG-ES
6066:TIFF/IT
6061:TIFF/EP
6046:JPEG XT
6041:JPEG XS
6036:JPEG XR
6031:JPEG XL
6026:JPEG-LS
5907:aptX HD
5887:WavPack
5829:RTAudio
5769:Codec 2
5702:AVS2 P3
5629:GSM-EFR
5599:AMR-WB+
5533:G.729.1
5513:G.723.1
5503:G.722.2
5498:G.722.1
5297:Smacker
5287:RTVideo
5215:Huffyuv
5195:Cinepak
5155:AVS2 P2
4869:formats
4672:26 June
4629:"FAAD2"
4574:Nero AG
2958:14 July
2930:ASSP-34
2823:Bibcode
2784:Spotify
2605:18 June
2443:Android
2371:Nero AG
2268:MPlayer
2237:Windows
2209:ffdshow
2170:Rockbox
2137:library
2121:Google
1986:Palm OS
1939:Android
1916:bada OS
1851:Philips
1839:Samsung
1818:Rockbox
1807:Walkman
1651:ISDB-Tb
1588:scholar
1438:xHE-AAC
1359:Philips
1308:Red Hat
623:Philips
534:History
528:Spotify
520:Android
248:2019-12
246: (
225:1997-12
223: (
8019:Harris
8014:C-QUAM
7903:HE-AAC
7880:Codecs
7864:Canada
7830:DVB-SH
7804:S band
7799:L band
7785:C band
7709:L band
7600:Analog
7471:MPEG-2
7466:HD VMD
7461:HD DVD
7298:HD MAC
6720:MPEG-1
6414:RatDVD
6308:Others
6075:Others
5877:VMR-WB
5872:TwinVQ
5737:Others
5624:GSM-FR
5619:GSM-HR
5609:EVRC-B
5594:AMR-WB
5566:Vorbis
5406:AAC-LD
5401:HE-AAC
5307:Theora
5250:ProRes
5245:Pixlet
5173:Others
4982:MPEG-5
4970:MPEG-I
4958:MPEG-H
4936:MPEG-4
4929:Part 2
4924:MPEG-2
4919:MPEG-1
4808:
4798:
4788:
4778:
4600:"FAAC"
2896:
2871:
2563:, and
2522:Vorbis
2502:AAC-LD
2462:FFmpeg
2322:Winamp
2263:mp3tag
2026:P-4000
2022:P-2000
1927:iPhone
1751:Archos
1739:HE-AAC
1727:2009.
1692:iTunes
1638:ISDB-T
1590:
1583:
1576:
1569:
1561:
1501:TwinVQ
1405:AAC-LD
1382:MPEG-4
1361:, and
1291:FFmpeg
1280:codecs
1252:AAC-LD
1242:AAC-LD
1026:MPEG-4
1017:MPEG-4
857:MPEG-2
853:MPEG-1
802:HE-AAC
790:AAC-LD
756:TwinVQ
682:MPEG-1
641:, and
629:, and
485:iTunes
461:iPhone
401:, and
383:HE-AAC
379:MPEG-4
375:MPEG-2
34:is in
8009:Belar
7835:S-DMB
7825:DAB-S
7730:CAM-D
7643:COFDM
7622:Radio
7506:W-VHS
7456:H.266
7451:H.265
7446:H.264
7436:D-VHS
7348:Audio
7339:SBTVD
7158:Other
6935:H.263
6823:H.261
6635:Lists
6580:ADPCM
6575:µ-law
6570:A-law
6543:Lossy
6516:ACELP
6461:NETVC
6286:SMPTE
6248:T.802
6235:ITU-T
6211:(MP4)
6011:JBIG2
5974:ITU-T
5946:Image
5882:VSELP
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