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HD Radio

XTalker said:
I am not an engineer, but I do believe bandwidth is an issue for HD. The digital specturm is finite and how much you uses within the available spectrum does make a difference. That is why stations stream at different rates!
Click to expand...

Yes there is a limited amount of bandwidth. But digital is different than analog. When you run out of bandwidth with digital **typically* you get digital artifacts (incorrect decoding). There is a difference between digital bandwith and anlog bandwidth.

If you looked on a spectrum analyzer of the audio output, you would see that most digital forms can make it out to 20kHz. Now it is the accuracy of that signal that is the difference. When you get into real low rates, most compression schemes roll off the high ends in order to save on the resolution.
 
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