A pulsed harmonic technique for the study of sound propagation in the atmosphere

Autor:	D.A. Bohlender, P.J. Irwin, T. Mathews, F. Babott
Rok vydání:	1986
Předmět:	Physics Flow resistivity Acoustics and Ultrasonics Mechanics of Materials Mechanical Engineering Acoustics Sound propagation Condensed Matter Physics Sound speed gradient
Zdroj:	Journal of Sound and Vibration. 105:283-290
ISSN:	0022-460X
Popis:	A description of equipment used in the study of sound propagation in the atmosphere near the Earth's surface is given. The effective flow resistivity of the ground was determined by a best fit of measured sound levels near the surface 50 m from a source to theoretical levels calculated by using partially coherent acoustics theory and empirical relations of Delany and Bazley [1]. This in turn permitted calculation of the theoretical sound levels at greater ranges for comparison with measured values. Results for a plowed field and a snow-covered field are presented.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::537a2f5f4136dcbe4693e1f0e19241d5 https://doi.org/10.1016/0022-460x(86)90157-4 Zobrazit plný text záznamu