loudness level

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Related to loudness level: equal loudness contour

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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References in periodicals archive ?

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.

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A total of 352 half-hour periods (22 days) were included in the analysis of the effect of loudness levels on dispensing error rates.

Relationships between ambient sounds and the accuracy of pharmacists' prescription-filling performance

They automatically provide continuously variable amplification for the different intensities (loudness levels) of speech based on a persons sensitivity to loudness of both high (treble) and low (bass) frequency sounds.

New devices aid hearing impaired

Automatic loudness control (ALC) prevents excessive jumps in programmeto-programme and channel-to-channel loudness levels. Available for multiple Densite interfaces, it is designed to address all typical loudness problems, including audio-level changes between programmes and commercials, without adversely impacting the programme content.

Miranda offering loudness control solutions

* 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 tinnitus severity