Audibility of some specific public-address warning signals in typical environmental noise situations
✍ Scribed by Helmut Fleischer; Jens Blauert
- Book ID
- 102990021
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 759 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0003-682X
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✦ Synopsis
A BSTRA CT
The scope of the explorative study reported here is to investigate the audibility of different public-address warning signals (existing and new) in different environmental noise situations. Three outdoor situations as well as three indoor situations have been simulated with noise signals of different spectral and temporal patterns. Seven warning signals and--for comparison--a steady-state 1200-Hz tone were used. lndoor listening was allowed for by means of electronic filtering of the warning signals. Four subjects (two female, two male) aged 12 to 42 years took part in the psychoacoustic experiments, which were performed under laboratory conditions in an anechoic chamber.
The results suggest a strong interdependence of the spectral distributions of the warning signals and of the environmental noise signals. In addition, the temporal structure of the environmental noise was found to influence the audibility of the warning signal in the sense that a steady-state environmental noise represents the 'worst case'.