ASA - S1.15 PART 7
American National Standard Electroacoustics – Measurement microphones - Part 7: Values for the difference between free field and pressure sensitivity levels of laboratory standard microphones
| Organization: | ASA |
| Publication Date: | 12 July 2021 |
| Status: | active |
| Page Count: | 20 |
scope:
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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