Search results
Results from the WOW.Com Content Network
Digital multimedia broadcasting (DMB) and DAB-IP are both suitable for mobile radio and TV because they support MPEG 4 AVC and WMV9 respectively as video codecs. However, a DMB video subchannel can easily be added to any DAB transmission, as it was designed to be carried on a DAB subchannel.
4 FM-available stations (Jedynka, Dwójka, Trójka, PR24) 3 DAB-only stations (Czwórka, Radio Dzieciom, Radio Rytm) Radio Poland - DAB-only in Poland, but in some countries also on FM or SW. The multiplex can include one or two regional stations (some of them also FM-available), but it differs between Polskie Radio's various regional stations.
But FM listening has increased to 61% and DAB decreased to 21% DAB listeners may also use AM & FM too. [ 10 ] The UK currently has the world's biggest digital radio network, with about 500 transmitters, two nationwide DAB ensembles and 48 local and regional DAB ensembles, broadcasting over 250 commercial and 34 BBC radio stations ; about 100 ...
The typical bitrate for DAB stereo programs is 128 kilobit per second or less and as a result most radio stations on DAB have a poorer sound quality than FM does under similar conditions. [40] Many DAB stations also broadcast in mono. In contrast, DAB+ uses the newer AAC+ codec and HD FM uses a codec based upon the MPEG-4 HE-AAC standard.
Several nations have set dates to switch off analog FM networks in favor of DAB / DAB+, notably Norway in 2017 [65] and Switzerland in 2024. [66] A single DAB station transmits a 1,500 kHz bandwidth signal that carries from 9–12 channels of digital audio modulated by OFDM from which the listener can choose.
However, it uses COFDM as the underlying broadcast technology to add digital audio to AM (medium wave) and FM broadcasts. Both Digital Radio Mondiale and HD Radio are classified as in-band on-channel systems, unlike Eureka 147 (DAB: Digital Audio Broadcasting) which uses separate VHF or UHF frequency bands instead.
A tuner is also a standalone home audio product, component, or device called an AM/FM tuner or a stereo tuner that is part of a hi-fi or stereo system, or a TV tuner for television broadcasts. The verb tuning in radio contexts means adjusting the receiver to detect the desired radio signal carrier frequency that a particular radio station uses.
The first hi-fi DAB tuners go on sale, at a cost of around £2,000. 14 November – BBC Parliament's audio feed on the BBC's national multiplex is closed down. 2001. Digital News Network launches to provide rolling news for the regional DAB multiplexes then licensed in England and Wales. [7] 2002. 2 February – BBC Radio 5 Live Sports Extra is ...