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Effects of duration and other noise characteristics on the annoyance caused by aircraft-flyover noise
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | McCurdy, D. A. Powell, C. A. |
| Copyright Year | 1979 |
| Description | A laboratory experiment was conducted to determine the effects of duration and other noise characteristics on the annoyance caused by aircraft-flyover noise. Duration, doppler shift, and spectra were individually controlled by specifying aircraft operational factors, such as velocity, altitude, and spectrum, in a computer synthesis of the aircraft-noise stimuli. This control allowed the separation of the effects of duration from the other main factors in the experimental design: velocity, tonal content, and sound pressure level. The annoyance of a set of noise stimuli which were comprised of factorial combinations of a 3 durations, 3 velocities, 3 sound pressure levels, and 2 tone conditions were judged. The judgements were made by using a graphical scale procedure similar to numerical category scaling. Each of the main factors except velocity was found to affect the judged annoyance significantly. The interaction of tonal content with sound pressure level was also found to be significant. The duration correction used in the effective-perceived-noise-level procedure, 3 dB per doubling of effective duration, was found to account most accurately for the effect of duration. No significant effect doppler shift was found. |
| File Size | 1715523 |
| Page Count | 48 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19790012661 |
| Archival Resource Key | ark:/13960/t9j43k164 |
| Language | English |
| Publisher Date | 1979-03-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Psychoacoustics Airspeed Effective Perceived Noise Levels Statistical Analysis Aircraft Noise Sound Intensity Psychological Effects Computerized Simulation Doppler Effect Noise Tolerance Noise Spectra Sound Pressure Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
