Re: [jornada] mp3 on J720

From: Michael Gernoth <mlists_at_zerfleddert.de>
Date: Fri, 22 Jul 2005 23:49:37 +0200

Hi,

On Fri, Jul 22, 2005 at 09:21:04PM +0200, Piotr Roszatycki wrote:
> I'm using my J720 as mp3 player. I've found a strage bug in sound driver. It
> can't be set to 44100Hz or other standard frequency. It have to be set i.e.
> to 43200Hz. Unfortunately, each utility try to set the standard 44100 so it
> can't play the sound correctly.

If I see this correctly, it's a limitation of the hardware. At least
that's what I can figure out from the source.

> At least I'm using mpg321 as decoder and sox as stream player:
>
> mpg321 -w - file.mp3 | sox -t wav -r 43200 /dev/stdin -t ossdsp -r
> 43200 /dev/audio

mpg123 uses floating-point which is emulated on arm. Try using madplay,
which is fully integer-based and needs much less cpu-power. And it does
resampling on it's own.

Regards,
  Michael
Received on Fri Jul 22 2005 - 17:55:21 EDT

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