Simulated Indoor Sonic Booms Judged Relative to Noise from Subsonic Aircraft |
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5000 lbs Thrust acceptability aircraft flyover noise aircraft noise judged best predicts booms and aircraft BOOMS AS MEASURED BOOMS JUDGED RELATIVE booms when compared CORRECTION TO EPNL EPNdB EPNL FOR CONTRIBUTION EPNL units equally noisy EXPECTED IMPULSIVE SOUNDS FIGURE 2 CORRECTION Full Sonic Boom heard indoors heard outdoors impulse correction INDOOR SONIC BOOMS JUDGED EQUAL judged noisiness judgment tests LANDING AT 5000 level of aircraft listeners outdoors Max and EPNL Max dBA Max PNdB Max PNL measured outdoors msec noise from subsonic noisiness of sonic NOISINESS OF STARTLE non-impulsive aircraft Number pair of sounds peak overpressure PERCEIVED NOISE LEVELS perceived noisiness Performing Organization physical measures physical units predicting from physical present study psf 100 dBA psf R.T. R.T. Diff SIGNATURE AND RISE SIMULATED INDOOR SONIC simulated sonic boom sound pressure level Stanford Research Institute STARTLE TO EXPECTED stimuli subsonic aircraft flyover subsonic aircraft noise subsonic jet aircraft test room