in news:414e0d46@news.povray.org Rune wrote:

> ...but there can be lots of other reasons to change gain and pitch
> than just to simulate distance and doppler effect. For example I want
> my hovercraft to rise from the ground and into the air, and while
> doing this the sound of the engine rises both in volume (=gain) and
> in pitch. I can easily control this from within my POV-Ray file.

That's a dissapointment, OpenAL only knows about location and velocity, 
not acceleration. Hmmm, so for other effects one has to come up with one's 
own way to control pitch/gain. 

> What's left for the sound-file you propose? 

Sounds, source attributes, listener attributes, maybe buffer attributes, 
everything except spatial data, triggers (state) and the frame stuff.

Ingo

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