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May 19, 2000

Complete Document

American National Standard Method for Measuring the Performance of Noise Discriminating and Noise Canceling Microphones

Includes all amendments and changes through Reaffirmation Notice , February 20, 2015

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Product Details:

  • Revision: May 19, 2000
  • Published Date: February 20, 2015
  • Status: Active, Most Current
  • Document Language: English
  • Published By: Acoustical Society of America (ASA)
  • Page Count: 19
  • ANSI Approved: Yes
  • DoD Adopted: No

Description / Abstract:

This Standard specifies the laboratory physical measurement procedure, calculation, and results reporting for quantifying the performance of noise canceling and noise discriminating microphones in a diffuse noise field.


The purpose of this Standard is to describe procedures designed to measure the noise canceling performance of noise canceling and noise discrimination microphones in a diffuse sound field. This method provides a measure of merit, the Noise Canceling Index, which can be used to quantify the overall performance of a microphone in canceling or discriminating noise when compared to a laboratory quality pressure microphone meeting ANSI S1.12-1967 (R 1997).