Take a look at hetro/adsyn for frequency vs. time, if your sound doesn't
have much transient information. Also look at pvread (uses files
produced by pvanal).

Hope this helps.

David M. Boothe, Audio Director 
Lyrick Studios, Dallas, TX


> -----Original Message-----
> From:	Pedro Batista [SMTP:PBATISTA@colep.mailpac.pt]
> Sent:	July 29, 1998 03:00
> To:	csound@maths.ex.ac.uk
> Subject:	Freq within csound?
> 
> 
> Hello everyone :)
> 
> I've been considering a way to have access to frequency information in
> 
> realtime in csound. Id like to read a window of samples from a file,
> for 
> instance, a chunk of ksmps with tablera/tablewa, and then extracting
> freq 
> info from the written table.
> What I wanted is to reduce the info that describes that window of
> samples, 
> maybe identifying a fixed number of freq's that I could use to
> additively 
> resynth the original signal.
> I guess this is a hard task. If there was a simple way, we'd have a
> ugen 
> doing it. But the PVANAL/pvoc pair do just that, so maybe it is
> feasible 
> within csound (at least with restrictions)
> If this can be done, will someone please provide some directions for
> study, 
> since its the 1st time I deal with it...
> Thanks in advance
>