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This forum comment and this superuser answer suggest that the audio compression contributes to loss of quality. I've noticed that music played over my BT setup sometimes pitch bends in ways I don't remember the original doing, and I'm wondering if SBC has something to do with it.

I'm using Ubuntu 10.10 on a Mac Pro, connecting to a pair of Sony DR-BT50's. Is there a way to inspect which Bluetooth codec pulseaudio is using, what codecs both ends of the bluetooth link support?

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closed as too localized by Bruno Pereira, RolandiXor, Marco Ceppi Feb 10 '12 at 13:57

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

I'd still appreciate an answer. I'm still using the headphones, still notice pitch bends from time to time. What should I do to keep it open? – jldugger Feb 9 '12 at 17:55
You just did. If they close it later on just drop a comment. – Bruno Pereira Feb 9 '12 at 20:06

Normally compression doesn't change pitch, but depending on the program the hertz will. For instance if a 48000 file is played at 44100 the file will play more slowly, and will the pitch will drop. Just check the hertz your files are playing at.

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If it were MP3 compression, I might be more inclined to look elsewhere. To address your point, the pitch bends, seemingly at random during songs rather than being constantly out of tune. I don't think this is a sample rate problem. – jldugger Jan 27 '11 at 5:00

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