audio-frequency amplifier
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audio-frequency amplifier
(′öd·ē·ō ¦frē·kwən·sē ¦am·plə′fī·ər)
(electronics) An electronic circuit for amplification of signals within, and in some cases above, the audible range of frequencies in equipment used to record and reproduce sound. Also known as audio amplifier.
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audio-frequency amplifier
Gale Encyclopedia of Espionage & Intelligence:
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Audio amplifier
Electronic devices that increase the power of an electrical signal whose vibrations are confined to the audio frequency range—the range that can be perceived by the human ear.
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McGraw-Hill Science & Technology Dictionary
McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.
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