Subject: Re: [linux-audio-user] ppc alsa audacity
From: Anahata (anahata_AT_treewind.co.uk)
Date: Thu Nov 21 2002 - 10:51:00 EET
On Wed, Nov 20, 2002 at 09:40:12PM +0000, Matthew Yee-King wrote:
> i've had the white noise problem. i noticed that if the volume was
> really low in the app, it was usable almost.
Sounds *very* like an endian issue then. When the level is so low that only
the lower 8 bits are changing, that will come out as 16 bit audio with the
top 8 bits changing (i.e. raised in level by 48 dB). As soon as the level
overflows to more than 8 bits, horrendous fuzz sets in.
> which sounds like a
> hardware issue, so how can the problem go away with a different kernel
> and the same app?
If different kernel means different sound driver, one driver may be doing
the byte swapping conditionally on CPU byte order and the other not.
(wild guess)
-- Anahata anahata_AT_treewind.co.uk Tel: 01638 720444 http://www.treewind.co.uk Mob: 07976 263827
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