Does anybody know if there are any APIs out there (open source) that
support 5.1 audio?
We have some wicked audio equipment here and its not being used to its
full potential because all the VR presentations that we show here have
no audio. The audio (which is usually just a narrator or the sound of
the wind blowing) is played separately on a dvd player, which does use
The objective is to integrate audio with the applications so that its
more interactive (context-sensitive narration, ambience, etc). From what
i’ve read so far, seems like OpenAl only supports mono.
The presentations run on a Silicon and we use Performer, VrJuggler and
Thank you for your info!
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OpenAL does not only support mono sound. I know for sure that stereo
sounds are played correctly, they just can’t be moved in 3d space, since
they already have their own preset channels. I’ve never worked with a
5.1 sound system, but I suppose that if you take a mono sound, and make
it move, it will be be rendered correctly by the 5.1 system. I also
suppose that if you take a 5 channels sound file, it will also be
rendered correctly, though you won’t be able to move the sound.
Sorry, im really new to all of this.
So you are saying that i can create a source in openal, attach a buffer
with a mono sound file to it, and that if i move the listener so that
the source lies behind and to the right, then the audience will hear the
sound coming out mostly from the rear right channel?
How does OpenAl know that the silicon has a 5.1 soundcard?
I suppose you could do that, but as I said, I’ve never had access to a
something better than a 2.1 sound system. What I said was speculation,
but I think it OpenAL would work this way. I did not had time to do an
extensive search, but Unreal Tournament 2003 uses OpenAL, and I think
you can have a 5.1 sound system with that game. So I think it’s pretty
safe to say that it supports 5.1 sound system. But as for the hardware
part, that, I’m really clueless