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Digital Audio Broadcasting
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ALSO CALLED: Digital Audio Broadcasting Services, Digital Radio Services, DAB, Digital Radio, and Direct Broadcast Radio Systems
DEFINITION: Digital audio broadcasting (DAB), also known as digital radio and high-definition radio, is audio broadcasting in which analog audio is converted into a digital signal and transmitted on an assigned channel in the AM or (more usually) FM frequency range. DAB is said to offer compact disc (CD)- quality audio on the FM (frequency modulation)
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Posted: 06 Aug 2007 | Published: 01 Aug 2007
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DIGITAL AUDIO BROADCASTING DEFINITION (continued): … broadcast band and to offer FM-quality audio on the AM (amplitude modulation) broadcast band. The technology was first deployed in the United Kingdom in 1995, and has become common throughout Europe. Digital audio broadcast signals are transmitted in-band, on-channel (IBOC). Several stations can be carried within the same frequency spectrum. Listeners must have a receiver equipped to handle DAB signals. At the transmitting site, the signal is compressed using MPEG algorithms and modulated using coded orthogonal frequency division …
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