ASA 128th Meeting - Austin, Texas - 1994 Nov 28 .. Dec 02

5aNS9. Annoyance of individual vehicle pass-by noise for light and heavy vehicles.

Niek J. Versfeld

Joos Vos

Frank W. M. Geurtsen

TNO Human Factors Res. Inst., P.O. Box 23, 3769 ZG Soesterberg, The Netherlands

A laboratory experiment has been conducted to assess the noise annoyance of individual vehicle pass-bys as a function of sound level. Vehicle type varied from passenger cars to heavy tanks. Results showed that for each individual vehicle type, the A-weighted sound exposure level (SEL) was the most important predictor of the annoyance. However, at a given annoyance, the difference in level between different vehicle types could be as high as 11 dBA SEL. The difference in level between the high-frequency part and the low-frequency part of the spectrum seemed to play a role in the annoyance, in that sounds containing relatively much high-frequency energy (e.g., passenger cars) were judged as being more annoying than those having relatively much low-frequency energy (such as tanks). [Work supported by the Ministry of Defence.]