Re: [Openvortex-dev] Distorted sound with alsa drivers

[Manuel Jander]

Hi Openvortex,


Jeff Muizelaar wrote:

> On 13 May 2003, Marc Heerdink wrote:
>  
>
> > Anyway, I installed the latest cvs drivers and loaded the modules. Then
> > I tried to play some sound. No matter what kind of sound file (mp3, wav)
> > or sound system (oss (emulated), alsa) I try, I always get distorted
> > sound. The sound is a lot softer than with the binary drivers and many
> > high and low frequencies are missing. It's kind of hard to describe, if
> > you want me to record it I'll give it a try..
> >    

On my Vortex 2 (00:0b.0 Multimedia audio controller: Aureal 
Semiconductor Vortex 2 (rev fe)) the output
volume is much softer than from my Turtle Beach Montego (Vortex 1). Now 
there is no problem in
increasing the gain of some mixer gains (not the AC97, i mean the 
internal digital matrix mixer) to
get louder sound. We could create some sort of a table for each kind of 
card. (What do you think?).

But it doesnt sound distorted. Its rather the other way: I'm amazed how 
many subtile details i was not aware before
of my MP3 collection :) (i mean things i didnt hear before, because the 
require real HIFI to be noticed).

Maybe the problem is some kind of interference between audio channels; 
some unwanted sum of signals somewhere
in the mixer matrix ? I have experimented that kind of things before on 
other circumstances, and mixing the same audio
with some phase offset can cause very odd filtering effects.

Does that card have any kind of "peripherals" ? I mean, external 
coprocessor or some sort of things ?

Best Regards.

Manuel Jander