Microphones and earphones for speech communications Ingestion-build-264231 The competitive world in which

The competitive world in which customer expectations and behaviour evolve has changed

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Microphones and earphones for speech communications Ingestion-build-264231 The competitive world in which1 Scope This standard 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. The object of this standard is to establish definitions relating to these electroacoustic transducers, and to standardize the characteristics to be specified and the relevant methods of measurement. This does not exclude the use