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IEC 61842 Ed. 1.0 en:2002

Microphones and earphones for speech communications

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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International Electrotechnical Commission [iec]
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