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A Recorder of Difference of Level

 

作者: James M. Lawther,   John G. King,  

 

期刊: The Journal of the Acoustical Society of America  （AIP Available online 1947）
卷期: Volume 19, issue 6  

页码: 966-971

 

ISSN:0001-4966

 

年代: 1947

 

DOI:10.1121/1.1916648

 

出版商: Acoustical Society of America

 

数据来源: AIP

 

摘要:

Modifications have been made on a Sound Apparatus Company level recorder to permit its application to the measurement of difference in level between two sounds. The modified circuit explained with reference to simplified diagrams; anti‐hunting devices are briefly noted; and the methods of pre‐setting the instrument for level and differential operation are discussed.

 

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