PHYSICS AND MATHEMATICS

Acoustic radiation of periodically moving mass sources

Yu. M. Zaslavsky, V. Yu. Zaslavskii

Institute of Applied Physics of the Russian Academy of Sciences

Abstract: The research represents the results of theoretical analysis of acoustic radiation in the air created by the constantly fluctuating body. We derive formulas that describe the spectral composition and the angular orientation of the acoustic field of the source. We have also studied the depandancy of the direction and the nature of the emission spectrum on its parameters. The signal waveforms emitting in different directions have also been built. The work can be used in the development of the theory of generation and emission of sound industrial and transport sources of acoustic noise.

Keywords: sound radiation, acoustic sources, noise spectrum.