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Consumer Electronics by S. P. Bali

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CHAPTER 2

MICROPHONES

In practically all modern acoustical work, the oscillations in sound pressure are picked up by some form of receiving electroacoustic transducer, such as a microphone, which converts them into similar electrical current or voltage oscillations. The latter either may be electrically amplified for immediate reconversion into sound energy or stored in some form, such as on a magnetic tape. When operating in air such transducers are known as microphones, and when operating in water as hydrophones. Microphones are used for converting music or speech into electrical signals which are transmitted or processed and then reproduced. They serve as measuring instruments, converting acoustical energy into electrical currents which ...

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