Re: [Openvortex-dev] Low volume, distortion, etc

[Ryan Underwood]

On Sat, Jun 14, 2003 at 10:44:10PM -0500, Callum Lerwick wrote:
> > What is your motherboard chipset?  I have a MS-6163 BXMaster with
> > i440BX.  The Vortex is sharing an IRQ with the video card, a Matrox
> > G400.  My CPU is a Celeron-II 533 overclocked at 840mhz.
> 
> I have an Abit BH6 440BX based board, running a Celeron 800 at 992mhz, 
> (124mhz bus).

Dang, our systems are pretty similar.  Wonder if that has anything to do
with it?

Anyone else on this list have a BX board?

> 00:11.0 Multimedia audio controller: Aureal Semiconductor Vortex 2 (rev fe)
>         Subsystem: Aureal Semiconductor AU8830 Vortex 3D Digital Audio 
> Processor
>         Flags: bus master, medium devsel, latency 32, IRQ 9

Mine is rev fa, hrmm.

> contention, however heavy disk and net access don't seem to reliably 
> trigger it either. Very strange.

Yeah, it's fairly random on my machine, the correlation with cpu
activity could be purely psychological.  Perhaps there is a programming
error that has been laying around since the days of Aureal and gone
unnoticed.

> Personally I'm not getting any noticable pops. Its just swaps. Maybe I'm 
> just getting the DMA buffers put right next to each other. (R/L are not 
> interleaved?)

I don't get pops anymore with the newest driver either.

> There is still some weirdness with the fragment sizes, relating to the 
> sample rate. I can put xmms at a 400ms buffer time and 25ms period time, 
> and play 44.1khz audio just fine, minus R/L swapping. Any lower and it 
> starts getting crackley, as if its underrunning on every period and 
> inserting silence. (Not a stuttering, which would be looping over the 
> same buffer until the next comes in) Try and play a 32khz mp3 and I have 
> to crank it all the way up to something like 5000ms buffer/500ms period 
> to play without crackle.

Weird stuff! :)

-- 
Ryan Underwood, <nemesis at icequake.net>, icq=10317253