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A Selective Microphone for Use in Acoustic Altimeters

 

作者: L. P. Delsasso,  

 

期刊: The Journal of the Acoustical Society of America  （AIP Available online 1934）
卷期: Volume 5, issue 3  

页码: 220-220

 

ISSN:0001-4966

 

年代: 1934

 

DOI:10.1121/1.1915654

 

出版商: Acoustical Society of America

 

数据来源: AIP

 

摘要:

A modification of Bragg's amplitude meter is applied to a resonant diaphragm, associated with a parabolic horn, to provide a highly selective microphone. When used with an impulsive source of sound it makes possible the measurement of distances as low as 10 ft. while in the presence of sounds comparable to those in aircraft.

 

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