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In the US, our "HD" radio (we don't have DAB) sounds so bad, I end up turning it off and listening to the analog version. It sounds like they reduced bitrate b
by gwbas1c 2y ago
In the US, our "HD" radio (we don't have DAB) sounds so bad, I end up turning it off and listening to the analog version.
It sounds like they reduced bitrate by pitch-shifting down prior to transmission, and then pitch-shifting back up at playback. Everything just has this metallic ring to it: When I tried the classical station, at first I thought there was bells in the piece they were playing until I realized it was a compression artifact. When I listen to talk, I keep hearing a bell/ringing over everyone's voice.
I know a lot of the newer codecs also sound great (for the car) at low bitrates, so I don't want to go and blame "quantity over quality."
- FireBeyond 2y agoThe whole "HD" thing of HD Radio was a deception to begin with. It blatantly played on the understanding of HD as "high definition", when all it actually meant was Hybrid Digital, i.e. you get a digital audio stream that falls back to a simulcast FM with insufficient signal strength or exceeding error correction thresholds.
- gwbas1c 2y agoWhen I read about it years ago, It was made out to have a very high bitrate (and quality) if the analog FM signal was replaced completely by a digital signal.