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About This Item


Full Description

This standard describes measurement methods for earphones and earphone transducers using couplers or ear simulators. Guidance is provided for the selection of the appropriate coupler or ear simulator for a given earphone and application. Methods for measurement of calibrated frequency response, inputoutput linearity, electrical impedance, and non-linear distortion, are described.

Document History

  1. ASA S3.7-2016 (R2020)


    American National Standard Method for Measurement and Calibration of Earphones

    • Most Recent
  2. ASA S3.7-1995 (R2008)

    American National Standard Method for Coupler Calibration of Earphones

    • Historical Version