Microphones and earphones for speech communications
NORMA vydaná dňa 8.3.2002
Označenie normy: IEC 61842-ed.1.0
Dátum vydania normy: 8.3.2002
Počet strán: 28
Približná hmotnosť: 84 g (0.19 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy IEC
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.