Subject: Re: [Bluez-devel] Motorola HT820 audio fidelity
From: Fredrik Tolf <fredrik@dolda2000.com>
To: bluez-devel@lists.sourceforge.net
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Date: Mon, 01 May 2006 16:02:44 +0200

On Thu, 2006-04-27 at 21:19 -0600, Brad Midgley wrote:
> It doesn't help that we're typically decoding mp3 and reencoding in sbc.
> Loss is really compounded.

Indeed, that seems to be the problem. I was always under the
(uninformed) impression that SBC was lossless, but I just tried
re-encoding an MP3 to SBC and playing that SBC with sbcenc and sbcdec,
and the exact same audio artifacts are showing themselves when I play
back to my normal speaker system as through the headphones.

So, at least it's not a hardware or BT stack problem. Is this an
inherent problem in SBC, or is there a way to tune the encoder to
compensate? Is it possibly so that a better encoder could be written
altogether?

Fredrik Tolf


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