• BS 4668:1971

BS 4668:1971

Specification for an acoustic coupler (IEC reference type) for calibration of earphones used in audiometry

BSI Group , 02/22/1971

Publisher: BS

File Format: PDF

$36.00$73.66


Specifies a reference coupler for loading an earphone with specified acoustic impedance when calibrating audiometers for the frequency range 125 Hz to 8000 Hz.

BS 4668:1971 History

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