[linux-audio-dev] alsa mixing

Paul Davis paul at linuxaudiosystems.com
Wed Jan 10 16:22:26 UTC 2007

On Wed, 2007-01-10 at 18:02 +0200, Jussi Laako wrote:
> Paul Davis wrote:
> > in general, you should forget about the h/w capabilities of an audio
> > interface. for every user that has a device with some interesting
> > qualities, there will be 10 who do not.
> > 
> > welcome to winmodem for audio ...
> Well, in this particular case, let's just see what the generic user out
> there probably has. In quite a lot of cases it's some SoundBlaster
> Audigy2 or X-Fi variant which both have somewhat extensive signal
> processing capabilities (or that's what I've understood). Or you could
> take ancient Aureal's Vortex2 as an example. Or also rather common
> CMI8738 (not sure about this one). Current Linux support for these
> devices is limited to PCM playback/recording and possibly bare MIDI.
> Currently the thing we really are missing on Linux is HAL support for
> something like OpenAL w/ EFX (or some DirectSound3D-for-Linux type
> thing). Having this is somewhat crucial for game development. This is
> also something OpenSL ES (http://www.khronos.org/opensles/) is trying to
> address on embedded area.

i suspect that the generic user at this point probably has an Intel HDA
device, the CMI or a SiS chipset.

i'm not a game developer and i can't comment on the usefulness of
DirectSound3D. it is just not used by the kinds of apps that i work on.


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