A magnitude-estimation experiment was conducted to evaluate the subjective annoyance of the noise generated by possible future turbofan STOL aircraft as compared to that of several current CTOL aircraft. In addition, some of the units used to scale the magnitude of aircraft noise were evaluated with respect to their applicability to STOL noise. Twenty test subjects rated their annoyance to a total of 119 noises over a range of 75 PNdb to 105 PNdb. Their subjective ratings were compared with acoustical analysis of the noises in terms of 28 rating scale units. The synthesized STOL noises of this experiment were found to be slightly more annoying than the conventional CTOL noises at equal levels of PNL and EPNL. Over the range of levels investigated the scaling units, with a few exceptions, were capable of predicting the points of equal annoyance for all of the noises with plus or minus 3 dB. The inclusion of duration corrections, in general, improved the predictive capabilities of the various scaling units; however, tone corrections reduced their predictive capabilities.
A subjective evaluation of synthesized STOL airplane noises
01.01.1973
Sonstige
Keine Angabe
Englisch
A subjective evaluation of synthesized STOL airplane noises
TIBKAT | 1973
|Engineering Index Backfile | 1960
|V/STOL cargo airplane characteristics
Engineering Index Backfile | 1961
|Preliminary design of "ARAVA" STOL airplane
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|Commercial STOL - The Airplane, the Airport
SAE Technical Papers | 1978
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