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THE NEED POR NOISE ABATEMENT
DESCRIBING AND MEASURING NOISE HUMAN REACTIONS
Sound Level and Loudness of Typical Noises
19 other sections not shown
A-LEVEL dB A-weighted sound level acceptability categories acoustical adjustments aircraft noise airport annoyed approximately areas articulation index automobile background noise barrier Beranek Beranek and Newman BOEING FIELD calculated community noise comparison Composite Noise Rating correlation corresponding criteria curves daytime dB(A decibels effective distance evaluation exceed existing noise Figures 31 fluctuation flyover frequency given Guidelines intruding loudness maximum median NEF contours night night-time Noise Climate Noise Criterion Noise Exposure Forecast noise measurement Noise Pollution noise source noisy Normally Unacceptable octave band outdoor peak Perceived Noise Level phons PNdB predict procedure pure tones recommended residential road traffic roadway roadway noise sleep social surveys sound level meter sound pressure level Speech Interference speed standard statistical studies subjective response Table traffic noise truck urban noise exposure URBAN NOISE LEVELS values volume flow Zone