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In the measurement of gamma rays or other ionising radiation, a radiation monitor or dosimeter will commonly use a filter to attenuate those energy levels or wavelengths that cause the least damage to the human body but letting through those that do the most damage, so any source of radiation may be
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Marine Mammal Noise
Exposure Criteria: Initial Scientific Recommendations. Brandon L. Southall, Ann E. Bowles, William T. Ellison, James J. Finneran, Roger L. Gentry, Charles R. Greene Jr., David Kastak, Darlene R. Ketten, James H. Miller, Paul E. Nachtigall, W. John Richardson, Jeanette A. Thomas,
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Another use of weighting is in television, in which the red, green and blue components of the signal are weighted according to their perceived brightness. This ensures compatibility with black and white receivers and also benefits noise performance and allows separation into meaningful
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is the preferred weighting to use because it was specifically devised to allow subjectively valid measurements on noise, rather than pure tones. It is often not realised that equal loudness curves, and hence A-weighting, really apply only to tones, as tests with
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is commonly used to emphasise frequencies around 3 to 6 kHz where the human ear is most sensitive, while attenuating very high and very low frequencies to which the ear is insensitive. A commonly used weighting is the
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Skin damage due to sun exposure is very wavelength dependent over the UV range 295 to 325 nm, with power at the shorter wavelength causing around 30 times as much damage as the longer one. In the calculation of
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curve, which results in units of dBA sound pressure level. Because the frequency response of human hearing varies with loudness, the A-weighting curve is correct only at a level of 40-
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In each field of measurement, special units are used to indicate a weighted measurement as opposed to a basic physical measurement of energy level. For sound, the unit is the
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While weighting may be applied to a set of data, such as epidemiological data, it is more commonly applied to measurements of light, heat, sound,
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Weighting filter according DIN EN 61672-1 2003-10 (DIN-IEC 651) Calculation: frequency f to dBA and dBC
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In the fields of acoustics and audio engineering, it is common to use a standard curve referred to as
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Auditory frequency weighting functions for marine mammals were introduced by
Southall et al. (2007).
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may contain an excessive amount of intricate detail that may interest only a particular audience
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measured in terms of its true danger rather than just its strength. The resulting unit is the
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are also used, the latter being particularly intended for the measurement of aircraft noise.
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involves emphasizing the contribution of particular aspects of a phenomenon (or of a set of
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show increased sensitivity in the 5 to 7 kHz region on noise compared to tones.
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to one side of a pair of scales in order to favour either the buyer or seller.
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any relevant information, and removing excessive detail that may be against
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AES pro audio reference definition of "weighting filters"
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Weighting and UV factor derivation for sun exposure
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may be too technical for most readers to understand
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53:Learn how and when to remove these messages
441:Weighting and television colour components
415:Application to hearing in aquatic animals
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223:Learn how and when to remove this message
162:Learn how and when to remove this message
103:Learn how and when to remove this message
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540:& Peter L. Tyack. Aquatic Mammals
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521:Z-weighting
501:M-weighting
491:G-weighting
452:chrominance
405:A-weighting
372:noise bands
355:D-weighting
339:A-weighting
602:Categories
527:References
213:March 2021
152:March 2021
140:relocating
93:March 2021
39:improve it
448:luminance
45:talk page
574:Archived
557:Archived
480:See also
471:Archived
465:UV Index
330:loudness
313:spectrum
298:analysis
435:sievert
197:Please
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302:weight
189:lend
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_Rumble_Weighting_curves.svg)
