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digital radio
(Encyclopedia) digital radio, audio broadcasting in which an analog audio signal is converted into a digital signal before being transmitted; also known as digital audio broadcasting (DAB) and high-…audio frequency
(Encyclopedia) audio frequency: see sound; radio.digital versatile disc
(Encyclopedia) digital versatile disc or digital video disc (DVD), a small plastic disc used for the storage of digital data. The successor media to the compact disc (CD), a DVD can have more than…tape recorder
(Encyclopedia) CE5 Magnetic tape-recording system tape recorder, device for recording and replaying of sound, video, and digital information on plastic (usually polyester) or paper tape. The tape…multiplexing
(Encyclopedia) multiplexing, in communication, technique whereby two or more independent messages, or information-bearing signals, are carried by a single common medium, or channel. When multiplexing…Thomaston
(Encyclopedia) ThomastonThomastontŏmˈəstən [key], city (1990 pop. 9,127), seat of Upson co., W central Ga., near the Flint River; inc. 1857. It was long a company town with textile mills (since 1833…sound recording
(Encyclopedia) sound recording, process of converting the acoustic energy of sound into some form in which it can be permanently stored and reproduced at any time. In 1855 the inventor Leon Scott…audiovisual education
(Encyclopedia) audiovisual education, educational instruction by means of materials that use the senses of sight and hearing to stimulate and enrich learning experiences. The successful use of motion…Open University
(Encyclopedia) Open University, headquartered at Milton Keynes, England; founded 1969 as the Univ. of the Air. In 1971 a distance learning program was begun that now consists of correspondence…modulation, in communications
(Encyclopedia) CE5 Modulation modulation, in communications, process in which some characteristic of a wave (the carrier wave) is made to vary in accordance with an information-bearing signal…Trending
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