00916nam a22001337a 4500999001700000245013000017250000800147260006400155300001000219505044100229650001700670942000700687952008800694  c16220d16220  aIEC 60118-9:1985-Hearing aids. Part 9 : bMethods of measurement of characteristics of hearing aids with bone vibrator output  a1.0  aGeneva :bInternational Electrotechnical Commission,c1985.  a23 p.  aDefines a method of expressing the input/output ratio as an acousto-mechanical sensitivity level measured on a mechanical coupler according to the second edition of IEC 60373. Provides a suitable basis for the exchange of information or for direct comparison of the electroacoustic characteristics of hearing aids using bone vibrator outputs. The methods chosen are practical and reproducible and are based on selected fixed parameters.  aHearing aids  cST  00104070aAIISHbAIISHd2020-06-22l0pST006r2020-06-22 00:00:00w2020-06-22yST