Describes a coupler for loading the earphones with a specific acoustic impedance when determining the physical performance characteristics. Not intended for determining performance of a hearing aid on a person but only as a simple means for the exchange of data.Cross References: BS 4727:Part 3:Group 08*BS 6083:Part 0*
Original price was: $93.98.$46.00Current price is: $46.00.
Specification for reference coupler for the measurement of hearing aids using earphones coupled to the ear by means of ear inserts
BSI Group , 06/30/1981
Pages: 12
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