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Crystal microphone is used for picking _______ signals.

Crystal microphone is used for picking _______ signals. Correct Answer phono

To pick up the heart sounds, it is essential that the transducer is properly placed and its impedance carefully matched. A crystal microphone is used for picking up phono signals. The phono transducer signals are amplified by a low noise preamplifier and fed to a bandpass filter which rejects all frequencies outside the 70 to 110 Hz range.

Related Questions

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