Historical
ANSI/ASA S3.55-2014/Part 5/IEC 60318-5:2005 (MOD) (R2019)
Electroacoustics - Simulators of Human Head and Ear - Part 5: 2 cm2 Coupler for the Measurement of Hearing Aids and Earphones Coupled to the Ear by Means of Ear Inserts (a modified nationally adopted international standard)
Describes an acoustic coupler for loading an earphone or hearing aid with a specified acoustic impedance when determining its physical performance characteristics, in the frequency range 125 Hz to 8 kHz. It is suitable for air conduction hearing aids and earphones, coupled to the ear by means of ear inserts e.g. ear molds or similar devices.
Acoustical Society of America [asa]
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