Construction of an anechoic chamber for aeroacoustic experiments and examination of its acoustic parameters
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- 作者：V. F. Kopiev ; V. V. Palchikovskiy ; I. V. Belyaev ; Yu. V. Bersenev…
- 关键词：anechoic chamber ; metrology ; sound ; absorbing wedges ; interferometer ; noise of aerodynamic sources
- 刊名：Acoustical Physics
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：63
- 期：1
- 页码：113-124
- 全文大小：
- 刊物类别：Physics and Astronomy
- 刊物主题：Acoustics;
- 出版者：Pleiades Publishing
- ISSN：1562-6865
- 卷排序：63
文摘
The acoustic parameters of a new anechoic chamber constructed at Perm National Research Polytechnic University (PNRPU) are presented. This chamber is designed to be used, among other things, for measuring noise from aerodynamic sources. Sound-absorbing wedges lining the walls of the chamber were studied in an interferometer with normal wave incidence. The results are compared to the characteristics of sound-absorbing wedges of existing anechoic facilities. Metrological examination of the acoustic parameters of the PNRPU anechoic chamber demonstrates that free field conditions are established in it, which will make it possible to conduct quantitative acoustic experiments.