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Historical
ANSI/ASA S1.16-2000 (R2020)
Measuring the Performance of Noise Discriminating and Noise Canceling Microphones
Describes procedures for measuring the performance of noise discriminating and noise canceling microphones. The signal-to-noise ratio is measured at 1/3 octave band intervals with the desired test source in a diffuse noise field. The noise canceling performance of the microphone is defined as the noise canceling index (NCI), a weighted summation of the signal-to-noise ratios. The NCI of the microphone under test can be compared to the required baseline NCI of a laboratory standard pressure microphone.
CONTENT PROVIDER
Acoustical Society of America [asa]
Acoustical Society of America [asa]