Basic Audio is a free introductory textbook to the basics of audio physics and electronics. See the editorial for more information.... |
Home Microphones The Purpose of Microphones | |||
See also: Microphone Sensitivity, Microphone Directivity, Microphone and Speaker Response Curves, Resonance | |||
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The Purpose of MicrophonesAuthor: N.H. Crowhurst Sound waves have to be converted into electrical impulses to be amplified. A microphone is needed to convert the tiny acoustic vibrations into electrical waves.
Every microphone has two basic actions: first to convert the acoustic vibrations of the air into mechanical vibrations by having the air move a diaphragm - a light stiff surface; second, it must act as a transducer, and convert this movement of the diaphragm into electrical currents or voltages. One important difference between microphones is the arrangement for making this conversion.
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Home Microphones The Purpose of Microphones |