[Openal-devel] Doing sound fields

[Sherief N. Farouk]

Hi,
The only public info so far is here: http://www.mganin.com/xal/
If you have any more specific inquiries feel free to ask, and I'll answer if
I can.

- Sherief

> -----Original Message-----
> From: Killian De Volder [mailto:killian.de.volder at scarlet.be]
> Sent: Monday, March 17, 2008 5:47 PM
> To: Sherief N. Farouk
> Subject: Re: [Openal-devel] Doing sound fields
> 
> I'm also working on a lib ... have any website or code I can check out
> to see if we have the same goal ?
> 
> Sherief N. Farouk wrote:
> > Hi,
> > I've been doing work on an in-house, very OpenAL-like audio library
> that
> > supports run-time loaded audio specialization programs. I'm planning
> to
> > release a usable package soon (to benchmark its implementation of
> some
> > features that I propose adding to OpenAL, this isn't a 'shameless
> plug :).
> > If it'd be useful to you, email me and I'll give you more details on
> > positioning programs.
> >
> > - Sherief
> >
> >
> >> -----Original Message-----
> >> From: openal-devel-bounces at opensource.creative.com [mailto:openal-
> >> devel-bounces at opensource.creative.com] On Behalf Of Scott Mayo
> >> Sent: Monday, March 17, 2008 4:21 PM
> >> To: openal-devel at opensource.creative.com
> >> Subject: [Openal-devel] Doing sound fields
> >>
> >>
> >> This question came up in a discussion with Chris Robinson, and he
> >> suggested
> >> it might be worth bringing up here. To set the background, Chris
> sent
> >> me a
> >> .dll for openAl Soft, which allows me to specify my speaker setup
> with
> >> an
> >> environment variable, which gets around the Vista brain-dead problem
> of
> >> forced stereo. (Thanks, Chris!) I've got this working, and can
> specify
> >> a
> >> position x,y,z position for sound, and can hear the sound off in the
> >> right
> >> direction. Yay openAL.
> >>
> >> Now the problem. I have what amounts to a theater, rigged for 7.1
> >> sound,
> >> with seating for several people. In some situations, I want to
> produce
> >> a
> >> sound that's "out there", in "that direction". This works fine. But
> in
> >> many
> >> cases I'd want to create a sound that appears to originate from just
> a
> >> few
> >> feet away from the listener - well inside the area bounded by the
> >> speakers.
> >> The only way to do this is to fire multiple speakers at different
> >> volumes,
> >> so the vectors add up to a point inside the room.
> >>
> >> I don't see a way to explain to openAl that my speakers positioned X
> >> feet
> >> apart, (X typically about 15), and laid out in a given
> configuration,
> >> and
> >> that a sound 3' from the center needs to be handled by using all the
> >> speakers (or most) at different volumes.
> >>
> >> I could probably write my own mixing and do it myself. I'd rather
> not.
> >> IS
> >> there an openAL solution, now or planned?
> >>
> >> --
> >> View this message in context: http://www.nabble.com/Doing-sound-
> fields-
> >> tp15899740p15899740.html
> >> Sent from the OpenAL - Dev mailing list archive at Nabble.com.
> >>
> >> _______________________________________________
> >> Openal-devel mailing list
> >> Openal-devel at opensource.creative.com
> >> http://opensource.creative.com/mailman/listinfo/openal-devel
> >>
> >
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> >
> >