Re: Sample Rate Conversion Quality in ALSA

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On Mon, Aug 21, 2006 at 09:07:31PM +0200, Marc Brooker wrote:
> On a related note, on an Athlon64 3200+ running Ubuntu Dapper for i386
> with backported alsa-libs 1.0.11 and alsa-plugins 1.0.11 (with
> samplerate plugin) cpu usage figures (while playing a VBR mp3 using
> gstreamer):
> standard ALSA linear: 2%
> samplerate: 6%
> samplerate_medium: 9%
> samplerate_best: 20%
> 
> From this it seems that samplerate_best is too costly, but samplerate
> and samplerate_medium would be usable on most modern hardware.

If you're running an i386 distro you're only using half of the
Athlon64's registers. It would be interesting to see if that
samplerate_best CPU load is reduced in 64-bit mode.

John

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