Applies to the microphone part and earphone part of handsets, headsets or earsets for speech communications, and also to the microphone units and earphone units of built-in handsets, headsets or earsets. Establishes definitions relating to these electroacoustic transducers, standardizes the characteristics to be specified and the relevant methods of measurement.
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IEC 61842 Ed. 1.0 en:2002
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Microphones and earphones for speech communications
International Electrotechnical Commission , 03/08/2002
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