Effects of Military Training Route Noise on Human Annoyance
Abstract
Forty-nine subjects were tested in four experiments. Each subject experienced all conditions within his particular study. All experiments were designed to compare equal energy low onset rate flyovers with high onset rate flyovers. A measure of annoyance taken after each simulated aircraft flyover was the more sensitive measure of low versus high onset rate. The results indicate that onset rate contributes annoyance that adds to the annoyance produced by the acoustic level of the flyover. A serial search task performed during the last three experiments enhanced the annoyance reaction to high onset rate flyovers. The overall results provide support for an interim metric proposed earlier; that the Sound Exposure Level be corrected by 16.6 x log (onset rate/15 dB per second) for onset rates between 15 and 30 dB per second. The present results suggest that the penalty is needed but it may be necessary to extend the penalty beyond 3D dB per second. More research is needed to determine exactly how a final metric for high onset rate noise is to be applied. (eg)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1989
- Accession Number
- ADA218040
Entities
People
- C. S. Harris
Organizations
- Armstrong Laboratory