Gradient Microphones

 

作者: Harry F. Olson,  

 

期刊: The Journal of the Acoustical Society of America  (AIP Available online 1946)
卷期: Volume 17, issue 3  

页码: 192-198

 

ISSN:0001-4966

 

年代: 1946

 

DOI:10.1121/1.1916315

 

出版商: Acoustical Society of America

 

数据来源: AIP

 

摘要:

The response‐frequency and directional characteristics of gradient microphones from zero tonth order have been obtained. Higher order unidirectional microphones have also been developed. The directivity increases with the order which means corresponding discrimination against random sound. The accentuation of the low frequency response, when the distance from a small source is less than a wave‐length, increases with the order and the wave‐length. This feature may be used to obtain high discrimination against distant sounds in a close talking microphone. The amount of discrimination increases with the order of the microphone.

 

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