scope:

These recommendations apply to sound system microphones in both professional and domestic applications. The microphones shall be understood to include devices, if any, such as transformers, preamplifiers or other elements which form an integral part of the microphone, up to the output terminals specified by the manufacturer. For stereo microphones the data for both sections should be given. This publication gives recommendations relative to the characteristics to be specified and the methods of measurement for sound system microphones, such as wide band microphones, microphones used normally for speech and close talking microphones. In general, the methods of measurement recommended are those which are seen to be the most directly related to the characteristics. This does not exclude the use of other methods, which will give equivalent results.