Reference coupler for the measurement of the electro-acoustic characteristics of hearing aid earphones

Published by	Publication Date	Number of Pages
AS	01/01/1971		6

Category: AS

Description

AS 1089 – Reference coupler for the measurement of the electro-acoustic characteristics of hearing aid earphones

Specifies a coupler suitable for determining the physical performance characteristics of hearing aids. The coupler is identical with that recommended by the IEC. The use of this coupler does not permit the actual performance of a hearing aid on the human ear to be determined, but allows the comparison of hearing aids of similar types.