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Many internet radio streams also use low bitrates but with MP3 rather than MP2 – providing better audio quality at the same reduced bandwidth (bit rate). On the other hand, an Ofcom survey, which was undertaken due to many consultation responses citing poor DAB quality, found that 94% of DAB listeners thought DAB was at least as good as FM. [23]
DAB transmitters are inevitably more expensive than their FM counterparts. DAB uses higher frequencies than FM and therefore there may be a need to compensate with more transmitters to achieve the same coverage as a single FM transmitter. DAB is commonly transmitted by a different company from the broadcaster who then sells the capacity to a ...
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.
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.
The audio quality of Australian DAB is correspondingly low - only 80 kbps for ClassicFM, for example, and most channels have much lower bitrates than this. So DAB is in general well below the 128 kbps traditionally accepted as CD quality, and an interference-free FM broadcast will almost certainly provide better audio. [dubious – discuss]
BBC Radio services are broadcast on various FM and AM frequencies, DAB digital radio and live streaming on BBC Sounds, which is available worldwide. They are also available on digital television in the UK, and archived programmes are available for 30 days or more after broadcast on BBC Sounds; many shows are available as podcasts.
In the fourth quarter (Q4) of 2012, Pandora, TuneIn Radio, iHeart Radio, and other subscription-based and free Internet radio services accounted for nearly one quarter (23 percent) of the average weekly music listening time among consumers between the ages of 13 and 35, an increase from a share of 17 percent the previous year.
FM radio on the new band had to begin from the ground floor. As a commercial venture, it remained a little-used audio enthusiasts' medium until the 1960s. The more prosperous AM stations, or their owners, acquired FM licenses and often broadcast the same programming on the FM station as on the AM station ("simulcasting"). The FCC limited this ...