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loudness level

   Also found in: Dictionary/thesaurus, Acronyms, Wikipedia 0.01 sec.
loudness level [′lau̇d·nəs ‚lev·əl]
(acoustics)
The level of a sound, in phons, equal to the sound pressure level in decibels, relative to 0.0002 microbar, of a pure 1000-hertz tone that is judged to be equally loud by listeners.
loudness level
Of a sound, the sound-pressure level of an equally loud 1,000-Hz pure tone, expressed in units called phons.
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Patients underwent audiologic evaluations, including tympanometry and measurements of pure-tone air and bone conduction thresholds, speech perception in quiet and noise, and most comfortable and uncomfortable loudness levels.
SSRI use by tinnitus patients: interactions between depression and ... by Shi, Yong-Bing / Ear, Nose and Throat Journal
NIHL can be caused by a one-time exposure to loud sound as well as by repeated exposure to sounds at various loudness levels over an extended period of time.
Noise-Induced Hearing Loss by Health Management Technology
To determine that loudness level, researchers at Langley set up a simulator booth in which study participants could listen and react to various types of sonic booms.
Sonic impact: lowering the boom of supersonic flight by Peterson, Ivars / Science News
 
 
 
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