CAPACITOR MICROPHONES
A capacitor (or to give it its original name, condenser) microphone, Fig. 2.14, is one that depends for its operation on the variation of capacitance between a fixed plate and a tightly stretched metal diaphragm. Its development represents a milestone in the history of modern electroacoustics and for a number of years this type of microphone was the accepted standard for high-quality sound systems.
Fig. 2.14 (a) AKG capacitor microphone—cross-section (b) Capacitor microphone
In this case the movable plate is the diaphragm which serves as the sound pressure sensing element. In order that it will respond well to transient ...
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