Eric this is terrific. Something I have been trying figure out on the PC
side of things. I'm looking at trying to interpret .wav files to generate
frequency and amplitude data and creating a text file for POV to use in an
animation. Not there yet but heading that direction. Keep developing!

Pat

Eric Andersen wrote:

> GrimDude wrote:
> >
> > Sounds to me like you have a professional package for this?
>
> Nope.  Here are the rough details:
>
> I used a shareware oscilliscope program to output frequency data to a
> text file.  Then, using a text editor I formatted the data into the form
> required by POV.  Within the scene file, the frequency data is read in
> and used to scale and texture objects, carefully coding so that the time
> index of the current frame is synchronized with the music (!).  One
> could create, (like i have), a sphere that pulsates with each bass note.
>  Since each "frame" of sound data is much shorter than 1/30 second, a
> "snapshot" approach can generate a very accurate but somewhat jerky
> animation.  I'm working on ways of smoothing out the animations without
> bogging down too much under all the extra MB's of sound data.
> I also plan to modify this code for lip-sync.
> If you're really interested in the nitty-gritty, let me know and I'll
> share some old code--but be warned it's all specialized and full of
> goofy junk.  Also, I work on a mac, which shouldn't make much of a
> difference, but sometimes there are compatability issues.
>
> Ya know, tho_... some of my best results in sync-ing audio and video
> have come from purely random collage.  It's amazing how things just seem
> to line up on their own.
>
> -E

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