DIN IEC 60118-9 : 1987现行
HEARING AIDS; METHODS OF MEASUREMENT OF CHARACTERISTICS OF HEARING AIDS WITH BONE VIBRATOR OUTPUT
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
Defines 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 publication 373. (in preparation). 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 are chosen to be practical and reproducible and are based on selected fixed parameters.
IEC 60118-9 : 1.0 - Identical
HD 450.9 : 200S1 - Identical
HD 450.9 : 200S1 - Identical
IEC 60118-9 : 1.0 - Identical
