Have you heard of the visual radio? Maybe not. It is a new DMB servicethat will be provided in Korea. South Korean T-DMB service companies have some audio channels. There are many people who prefer listening to radio programs to watching TV programs for a long time via their DMB devices. With this trend, Korean companies are trying to offer picture frame during their radio programs. They think that this new service will attract more customers. As an example of this service, users can read lyrics while listening to music. In addition, they can read information about the song itself and the singer. And every program can be delivered with text for some people who have difficulty in listening.
It is just beginning in Korea. Currently, operators are spending their time agonizing what is better and more attractive to Korean users.
Even though Korean DMB technology has evolved from DAB technology in Europe, it has better technical features more than DAB since they use different technologies for audio data compression. Korean DMB uses BSAC that can provide better quality of audio with narrower frequency than DAB. Moreover, it uses QVGA technology for picture compression rather than JEPG so that it can provide more picture frames with the same frequency bandwidth.
It is just beginning in Korea. Currently, operators are spending their time agonizing what is better and more attractive to Korean users.
Even though Korean DMB technology has evolved from DAB technology in Europe, it has better technical features more than DAB since they use different technologies for audio data compression. Korean DMB uses BSAC that can provide better quality of audio with narrower frequency than DAB. Moreover, it uses QVGA technology for picture compression rather than JEPG so that it can provide more picture frames with the same frequency bandwidth.
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