Subjective Ratings of Annoyance Produced by Rotary-Wing Aircraft Noise
- 1 May 1977
- report
- Published by Defense Technical Information Center (DTIC)
Abstract
Subjective ratings of annoyance caused by helicopter noise relative to that caused by fixed-wing aircraft were obtained. Comparison of the subjective ratings with various physical predictors of annoyance indicated that the integrated A-weighted level (dBA) predicted as well as any of the predictors with the D2-weighted level and EPNL almost equivalent. The B-weighted level and C-weighted level did not predict as well. No correction factor for the impulsive character (blade slap) of the helicopter noise was required. No substantial penalty for helicopters compared to fixed-wing aircraft noise was required. (Author)Keywords
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