ANSI/ASA S3.42 Part 1:1992 (R2017)

Describes techniques for characterizing steady-state performance of hearing aids with a broadband noise signal to assess performance of hearing aids in environments more nearly representing their real-world use. Noise test signal specified has been employed by the National Bureau of Standards for over 40 yrs in testing hearing aids and describes noise saturation sound pressure level, noise gain, frequency response, family of response curves and output versus input characteristic tests.