There are different kinds of microphones, but they all do about the same thing, which is to turn acoustic sounds into electronic signals that can be amplified, modified, or recorded. When you speak ...
Fig. 1: Diagrams from Wente’s 1916 patent application show the condenser microphone in cutaway view. Diaphragm (#6), which is grounded, is stretched only 5/10000th of an inch from the backplate (#7), ...
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