Report on Test No.8: Effective Perceived Noise Level Determination by Direct Subjective Test by SAE Research Project Committee R-6, Volume 8
Society of Automotive Engineers, 1972 - Airplanes - 78 pages
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U O METHOD OF ADJUSTMENT TEST DESIGNS
i Test Design A 1 5
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adjustable standard adjustment control adjustment test aircraft noise aircraft sounds analysis of variance anechoic chamber annoying background noise calibration clockwise adjustment constant time period control box setting DC 9 Draft ARP 1158 Effective Perceived Noise engineering approximation engineering calculation EPNL values experimental procedure Federal Aviation Regulations fixed sounds fixed Standard means fixed Standard sounds flybys flyover pair flyover sound indicator lights judgements latin square loudspeaker mean value method of adjustment multiple comparison Noise Recordings number of adjustments obtained operational definition Overall Attenuation Overall Mean Spread Perceived Noise Level photocell primary result R-6 Committee reverse SAE 1071 Method SAE-R6 Test sound level meter sound pair SOURCE OF VARIATION standard error standard signals standard stimuli Standard v Standard Subjective Equality tape loops Test aircraft flyovers Test and Standard test design test means test signals test sounds test stimuli Test v Standard Validatory Result variable sound variable Standard sound