DS DS/IEC 126: IEC reference coupler for the measurement of hearing aids using earphones coupled to the ear by means of ear inserts
SDO: DS: Dansk Standard
DOD Adopted ANSI Approved Approved
The standard describes a coupler for loading the earphone with a specified acoustic impedance when determining the physical performance characteristics, in the frequency range 200 Hz to 5 000 Hz, of air-conduction hearing aids using earphones coupled to the ear by means of ear inserts, e.g. ear moulds or similar devices. The use of this coupler does not allow the actual performance of a hearing aid on a person to be obtained.
- HEARING AIDS
- REFERENCE COUPLER
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