At the NAB Radio Show, October 6th - 8th in San Diego, Telos / Omnia and Fraunhofer IIS present a novel surround system for HD Radio technology, delivering impressive full surround audio without compromising the stereo signal in any way. This way, both users equipped with conventional stereo receivers and those owning surround receivers will get the maximum audio pleasure while listening to the same radio program. ...Read More » [Digital Pro Sound News] 'The key to the system is that all the pieces of the audio that go to the surround channels are present in the two stereo channels. Additionally, there is an ancillary data channel used for transmitting spatial information. The surround decoder, if present in the receiver, uses this information to move the pieces of audio to their respective positions, recreating the original multi-channel sound. In the system presented, 80 kilobits per second (kb/s) are used for the stereo channels, and 16 kb/s for the surround information.' From the people who brought us MP3.
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