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A-weighted A-weighted levels Acoust annoyance response auditory background noise baseline metric Category CN CN CN computed constant crest factor Crest Level defined difference Drop Hammer duty cycle energy equally loud equivalent sound level experimental hearing damage helicopter blade slap helicopter noise helicopter sounds impulse precision sound Impulse Sound Level impulsive noise sources impulsive signals impulsive sounds ISLM ISO Round Robin Izumi laboratory loudness calculation method loudness of impulsive loudness or noisiness maximum meter reading Motorcycle National Physical Laboratory noise burst objective physical parameters predicting pulse duration range reference noise reference signal relative repeated tone bursts response to impulsive Rock Drill Round Robin Tests shown in Figure simulated sonic booms sound exposure level Sound Level Meter sound pressure level spectrum speech interference standard deviation subjective correction factor subjective response Table test signal time-constant varying Zwicker
Page R-17 - US Government Printing Office Washington, DC 20402, SD Cat. No. C13.10; 500-22 I | Order From National Technical Information Service (NTIS) Springfield, Virginia 22151 19. SECURITY CLASS (THIS REPORT) UNCLASSIFIED 20. SECURITY CLASS (THIS PAGE) UNCLASSIFIED 21. NO. OF PAGES 168 22.
Page R-14 - Instrumentation Requirements for Measurement of Sonic Boom and Blast Waves — A Theoretical Study.
Page R-14 - Passchier-Vermeer, W.: Noise-Induced Hearing Loss From Exposure to Intermittent and Varying Noise.
Page R-13 - Temporary Threshold Shift in Hearing from Exposure to Different Noise Spectra at Equal dBA Level.
Page R-2 - Anderson, CMB and Robinson, DW, "The Effect of Interruption Rate on the Annoyance of an Intermittent Noise," NPL Acoustics Report Ac 53, National Physical Laboratory, Teddington, England, 1971.
Page R-6 - Small, AM, Brandt, JF, and Cox, PG, "Loudness as a Function of Signal Duration.
Page R-9 - O. Juhl; Lyregaard, PE; and Poulsen, T.: The Round Robin Test on Evaluation of Loudness Level of Impulsive Noise.
Page R-10 - Reese, TW; Kryter, KD; and Stevens, SS: The Relative Annoyance Produced by Various Bands of Noise. IC-65, Psycho- Acoustic Lab., Harvard Univ., Mar. 1944.