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ASA/ANSI S3.47-2014 (R2023)

Specification of Performance Measurement of Hearing Assistance Devices/Systems

This standard provides methods for evaluation of hearing assistance devices/systems (HADS) that are packaged for individual use and deliver the signal via air conduction to the user. Among the test methods described are family of response curves, output sound pressure curve for 90-dB sound pressure level input, frequency range, total harmonic distortion, noise level with no input, static and dynamic AGC characteristics, and gain control linearity. The measurements are similar to those described in ANSI/ASA S3.22-2009 American National Standard Specification of Hearing Aid Characteristics.

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