Chicago Urban Noise Study, Volume 1Bolt, Beranek, and Newman, 1970 - City noise |
Common terms and phrases
50 feet A-level A-WEIGHTED SOUND LEVEL Acoustical Aircraft Noise Airport ANSI areas audible discrete tones BAND CENTER FREQUENCIES Beranek and Newman burst bypass calibration CENTER FREQUENCIES City of Chicago Community Noise constant operation daytime dB(A decibels effective engine equipment exceed excessive noise excessive or unusual exhaust fluctuations frequency bands highway horn Impulsive Impulsive Noise instrumentation level measurements loud maximum noise ment microphone motor vehicle noise motorcycles muffler cutout mufflers required noise abatement noise and vibration noise control noise exposure noise limits noise measurement noise ordinances noise sources nuisance OCTAVE BAND CENTER operation to prevent peak Perceived Noise Level present prevent excessive prohibits recommended practices reduce REFERENCES cont requires muffler Residential signal similar device sound level meter sound pressure level specific Speech Interference speed surface test procedures Traffic Noise trucks turbofan unnecessary noise unusual noise urban noise vehicle path Zoning Districts