ANSI/ASA S1.15 PART 7:2021
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American National Standard Electroacoustics – Measurement microphones - Part 7: Values for the difference between free field and pressure sensitivity levels of laboratory standard microphones
Hardcopy , PDF
English
07-12-2021
This part of IEC 61094 gives a polynomial function derived from a least square fit to data from several laboratories, for the differences between free field and pressure sensitivity levels of laboratory standard microphones as specified in IEC 61094 1; enables determination of the free-field sensitivity level of a laboratory standard microphone for zero-degrees incidence in air by adding values of these differences to the pressure sensitivity level; gives tabulated values for the polynomial function for a range of frequency and temperature; is applicable when a suitable free field calibration is not available.
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