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Consumer Electronics by S. P. Bali

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MICROPHONE

All sound recording starts with the use of microphones. Professional recording engineers use microphones in large number, with the output from each microphone being separately recorded on a wide strip of recording tape. For example, 32 or more microphones are used to record a large orchestra. The placing of each microphone, the amplitude of recording from each microphone, and the subsequent mixing of the sound from each track to form two tracks of a stereo recording or four tracks of a discrete quad recording are operations which require great skill and experience.

A microphone is a device of the class called transducers which converts sound waves in air into electrical waves of the same frequency and shape. In the process of conversion, ...

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