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IEC 60268-4 Ed. 3.0 en:2004

Sound system equipment - Part 4: Microphones

specifies methods of measurement for the electrical impedance, sensitivity, directional response pattern, dynamic range and external influences of sound system microphones, and also gives recommendations as to characteristics to be specified. It applies to sound system microphones for all applications for speech and music

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International Electrotechnical Commission [iec]

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