perceived noise level


Also found in: Acronyms.

perceived noise level

[pər′sēvd ¦nȯiz ‚lev·əl]
(acoustics)
In perceived noise decibels, the noise level numerically equal to the sound pressure level, in decibels, of a band of random noise of width one-third to one octave centered on a frequency of 1000 hertz which is judged by listeners to be equally noisy.
References in periodicals archive ?
Fluidic chevrons are used to enhance mixing in the jet shear layer and break up large-scale structures which contribute significantly to the perceived noise level (Thomas, Joslin 2002).
The district court ruling referred to the Weighted Equivalent Continuous Perceived Noise Level (WECPNL), an environmental index gauging noise from airplanes, saying, ''The residents in the area with over 75 WECPNL suffer damage beyond tolerable limits.
Referring to Weighted Equivalent Continuous Perceived Noise Level (WECPNL), an international environmental index for airplane noise, Watanabe said in his ruling, ''The residents in the area with over 75 WECPNL suffer damage beyond tolerable limits.

Full browser ?