Audio Definition–adjective | 1. | Electronics. designating an electronic apparatus using audio frequencies: audio amplifier. | | 2. | of, pertaining to, or employed in the transmission, reception, or reproduction of sound. | | 3. | of or pertaining to frequencies or signals in the audible range. | –noun | 4. | Television. | a. | the audio elements of television (distinguished from video ). | | b. | the circuits in a receiver for reproducing sound. | | c. | the audio part of a television broadcast. | | | 5. | the field of sound recording, transmission, reception, and reproduction. | |
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Related topics from Britannicacompact disc
Because any type of information-not just audio-can be digitized, other forms of digital discs have been produced. Among them are the larger (120 to 300 mm [4.7 to 11.8 inches]) laserdisc, or ...
amplitude modulation
variation of the amplitude of a carrier wave (commonly a radio wave) in accordance with the characteristics of a signal, such as a vocal or musical sound composed of audio-frequency waves. See ...
compact disc
a molded plastic disc containing digital data that is scanned by a laser beam for the reproduction of recorded sound and other information. Since its commercial introduction in 1982, the audio CD has ...
digital sound recording
method of preserving sound in which audio signals are transformed into a series of pulses that correspond to patterns of binary digits (i.e., 0's and 1's) and are recorded as such on the surface of ...
distortion
in acoustics and electronics, any change in a signal that alters the basic waveform or the relationship between various frequency components; it is usually a degradation of the signal. Straight ...
radio
Amplifiers may be classified in a number of different ways: according to bandwidth (narrow or wide); frequency range (audio, intermediate, or radio frequency); or output parameter requirement ...
electromechanical transducer
Electrostatic loudspeakers make use of a large, thin metal plate between two parallel screens. An amplified audio signal is impressed onto the screens, polarizing the metal sheet, and the resulting ...
compact disc
A standard CD is 120 mm (4.75 inches) in diameter and 1.2 mm (0.05 inches) thick. It is composed of a clear polycarbonate plastic substrate, a reflective metallic layer, and a clear protective ...
compact disc
In analog sound recording, such as that on phonograph discs, audiocassettes, and standard audiotapes, an analog of the source audio waves is physically produced. Playback then requires an abrasive ...
triode
electron tube consisting of three electrodes-cathode filament, anode plate, and control grid-mounted in an evacuated metal or glass container. It has been used as an amplifier for both audio and ...
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