BS 6840-4(1997) : 1997被替代
SOUND SYSTEM EQUIPMENT - MICROPHONES
出版：British Standards Institution
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基本信息
标准编号： BS 6840-4(1997) : 1997
发布时间：1997/1/1 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：42
标准简介
Applicable to sound system microphones for all applications for speech and music. Not applicable to measurement microphones. Includes devices eg transformers, preamplifiers or other elements forming an integral part of the microphone, up to the output terminals defined by the manufacturer.
本标准替代的旧标准
替代本标准的新标准
