TY - BOOK TI - IEC 60118-7:2005-Electroacoustics - Hearing aids - Part 7 : : Measurement of the performance characteristics of hearing aids for production, supply and delivery quality assurance purposes PY - 2005/// CY - Geneva PB - International Electrotechnical Commission KW - Electroacoustics KW - Hearing aids N1 - Gives recommendations for the measurement of the performance characteristics of air-conduction hearing aids of a particular model for production, supply and delivery quality assurance purposes. The manufacturer will normally assign nominal values ER -