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Effects of sound level fluctuations on annoyance caused by aircraft-flyover noise
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | McCurdy, D. A. |
| Copyright Year | 1979 |
| Description | A laboratory experiment was conducted to determine the effects of variations in the rate and magnitude of sound level fluctuations on the annoyance caused by aircraft-flyover noise. The effects of tonal content, noise duration, and sound pressure level on annoyance were also studied. An aircraft-noise synthesis system was used to synthesize 32 aircraft-flyover noise stimuli representing the factorial combinations of 2 tone conditions, 2 noise durations, 2 sound pressure levels, 2 level fluctuation rates, and 2 level fluctuation magnitudes. Thirty-two test subjects made annoyance judgements on a total of 64 stimuli in a subjective listening test facility simulating an outdoor acoustic environment. Variations in the rate and magnitude of level fluctuations were found to have little, if any, effect on annoyance. Tonal content, noise duration, sound pressure level, and the interaction of tonal content with sound pressure level were found to affect the judged annoyance significantly. The addition of tone corrections and/or duration corrections significantly improved the annoyance prediction ability of noise rating scales. |
| File Size | 1253035 |
| Page Count | 41 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19800005624 |
| Archival Resource Key | ark:/13960/t3fz23352 |
| Language | English |
| Publisher Date | 1979-12-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Psychoacoustics Human Tolerances Aircraft Noise Noise Intensity Variations Pitch Noise Tolerance Auditory Stimuli Analysis of Variance 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 |
