3.21 normalized 8-hour average sound level. Level of time-mean-square, A-weighted sound pressure during a normalization period Tn of eight hours, such that the sound exposure therefrom is equal to the sound exposure of a time-varying sound at a place where...
3.20 community noise equivalent level. On a given day of the week, twenty-four hour-average A-weighted sound level after addition of 5 decibels to sound levels from 1900 hours to 2200 hours, and after addition of 10 decibels to sound levels from...
3.14 peak sound level. Level of the ratio of the square of a peak instantaneous sound-pressure signal with stated frequency weighting, within a stated time interval to the square of the reference value for sound pressure. Unit, decibel (dB), example...
3.13 maximum sound level. Greatest frequency-weighted and exponential-time-weighted sound level within a stated time interval. Unit, decibel (dB); abbreviation for F time weighting and A frequency weighting, for example, is MXFA; symbol LAFmx (or C and...
3.10 band sound pressure level. Sound pressure level for sound contained within a restricted frequency band. Unit, decibel (dB); abbreviation, BSPL; symbol, Lpb. Annotation A band...
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