Abstract
The registration of level changes of sound generated by a single source (e.g. a rail-vehicle — tram) allows the determination of the resultant level of noise emitted by sets of mobile sources (e.g. rail-vehicle lines). Research was aimed at the determination of the relationship between parameters a and L_AX, which characterize the noise of a single source, and the distance from the observation point, d. Investigations were conducted in a not built-over, flat and covered by grass area, for various types of trams and several speeds.References
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[4] S. L. YANIV, J. W. BAUER, D. R. FLYNN, W. F. DANNER, Effects of time-varying noise on annoyance: a review, NBSIR 81-2377, Washington 1981.
[2] R. MAKAREWICZ, Theoretical foundations of acoustics in town planning, PWN, Poznań—Warszawa 1984 (in Polish).
[3] B. SZULC, B. PLEBAŃSKI, Noise emitted by rail vehicles. Part 2: A review of measurement methods and result of noise emitted by a tram, Proc. of Scientific-Technical Symposium on Protection from External Noise, Warszawa 1980 (in Polish).
[4] S. L. YANIV, J. W. BAUER, D. R. FLYNN, W. F. DANNER, Effects of time-varying noise on annoyance: a review, NBSIR 81-2377, Washington 1981.
