Electroacoustics. Simulators of human head and ear - 2 cm³ coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts Ingestion-build-279162 5 Planning and exchange of

5 Planning and exchange of information

with the exception of those associated with environmental compatibility (installation conditions)

BS EN 16842-7 is one of a series of documents applicable to test the visibility of industrial trucks

for the exchange of thermal analysis data for space applications

Electroacoustics. Simulators of human head and ear - 2 cm³ coupler for the measurement of hearing aids and earphones coupled to the ear by means of ear inserts Ingestion-build-279162 5 Planning and exchange of1 Scope This part of IEC 60318 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 moulds or similar devices. The sound pressure developed by an earphone is not, in general, the same in