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ANSI/ASA S1.15-2021/Part 4/IEC 61094-4:1995
Electroacoustics - Measurement microphones - Part 4: Specifications for working standard microphones
Applicable to working standard microphones. It specifies mechanical dimensions and certain electroacoustical characteristics for working standard microphones used in measuring systems for the determination of sound pressure to enable these microphones to be used as transfer standards in the calibration of acoustic measurement instruments.
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Acoustical Society of America [asa]