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Measurement microphones - Part 8: Methods for determining the free-field sensitivity of working standard microphones by comparison
Measurement microphones - Part 8: Methods for determining the free-field sensitivity of working standard microphones by comparison
IEC 61094-8:2012 applicable to working standard microphones meeting the requirements of IEC 61094-4.
It describes methods of determining the free-field sensitivity by comparison with a laboratory standard microphone or working standard microphone (where applicable) that has been calibrated according to either:
Methods performed in an acoustical environment that is a good approximation to an ideal free-field (e.g. a high quality free-field chamber), and methods that use post processing of results to minimise the effect of imperfections in the acoustical environment, to simulate free-field conditions, are both covered by this part of IEC 61094.
Comparison methods based on the principles described in IEC 61094-3 are also possible but beyond the scope of this part of IEC 61094.
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