Abstract :
Digital audio broadcasting will come on-line worldwide in the next few years. The technology-also known as digital audio radio or digital sound broadcasting-promises to provide sound of compact-disk quality, nearly free from multipath distortion or other transmission interferences. And digital audio broadcasting (DAB) is not just for sound: all sorts of information, digitally encoded, will be transmitted. Testing is already under way around the world for systems that deliver DAB signals from satellites, from terrestrial systems using newly assigned spectral bands, and from in-band (that is, currently assigned) AM and FM systems. The author discusses spectra for DAB, perceptual coding, Europe´s Eureka 147 system, and DAB research in Canada, the USA, and Japan
Keywords :
audio coding; digital audio broadcasting; direct broadcasting by satellite; AM systems; Canada; Eureka 147 system; FM systems; Japan; USA; digital audio broadcasting; digital audio radio; digital sound broadcasting; digitally encoded information; multipath distortion; perceptual coding; satellite broadcasting; spectral bands; terrestrial broadcasting; transmission interference; Artificial satellites; Auditory displays; Broadcast technology; Communication standards; Digital audio broadcasting; FCC; Radio broadcasting; Radio spectrum management; Satellite broadcasting; TV broadcasting;
