Re: [sc-users] FFT time stretching

[Joshua Parmenter <josh@xxxxxxxxxxxxxxxxx>]

PVSynth doesn't do an FFT resynth, but a sin osc bank resynthesis.  
I'm not sure what the changes between the csound4 pv files and the  
csound 5 pvx files are, but it may not be much work to get these to  
work. Do you know where a file description of pvx files are?

The one's I am building right now for SCs FFT ugens will use SCs FFT  
format.

Best,

Josh

On Oct 18, 2007, at 9:24 PM, Hector Centeno wrote:

> Sorry, one more question:
>
> Would it be possible to use PVFile to read Csound's PVX files and then
> transform the data using the Supercollider FFT UGens? I know that PVX
> files are amplitude+frequency and looks like SC uses amplitude+phase
> for the FFT UGens, am I right? Would that make them incompatible,
> unless the data is converted? Sorry if I'm asking too obvious of a
> question.
>
> Thanks,
>
> Hector
>
>
>
> On 10/19/07, Hector Centeno <hcengar@xxxxxxxxx> wrote:
> > Thanks Joshua for your response. I guess they will work in Linux,  
> > right?
> >
> > Cheers,
> >
> >
> > Hector
> >
> >
> > On 10/19/07, Joshua Parmenter <josh@xxxxxxxxxxxxxxxxx> wrote:
> > > Hi Hector,
> > >
> > > I'm actually working on some UGens right now to do this. There are
> > > still some bugs to work out though.
> > >
> > > Also, in my lib are some UGens that use CSound 4s pv files. These  
> > > are
> > > PVFile, PVSynth and PVInfo. You can get them in the JoshUGens at:
> > >
> > > http://sourceforge.net/projects/sc3-plugins/
> > >
> > > Best,
> > >
> > > Josh
> > >
> > > On Oct 18, 2007, at 9:00 PM, Hector Centeno wrote:
> > >
> > > > Hello,
> > > >
> > > > I'm just starting to learn Supercollider and I would like to  
> > > > know if
> > > > it is possible to do time stretching using FFT data. I've done  
> > > > that in
> > > > Csound using PVX files and reding them using a variable speed  
> > > > pointer,
> > > > changing the speed in realtime. Is it possible to do this in SC?
> > > >
> > > > Thanks!
> > > >
> > > >
> > > > Hector
> > > > _______________________________________________
> > > > sc-users mailing list
> > > > sc-users@xxxxxxxxxxxxxxx
> > > > http://www.create.ucsb.edu/mailman/listinfo/sc-users
> > >
> > > ******************************************
> > > /* Joshua D. Parmenter
> > > http://www.realizedsound.net/josh/
> > >
> > > "Every composer – at all times and in all cases – gives his own
> > > interpretation of how modern society is structured: whether actively
> > > or passively, consciously or unconsciously, he makes choices in this
> > > regard. He may be conservative or he may subject himself to  
> > > continual
> > > renewal; or he may strive for a revolutionary, historical or social
> > > palingenesis." - Luigi Nono
> > > */
> > >
> > >
> > > _______________________________________________
> > > sc-users mailing list
> > > sc-users@xxxxxxxxxxxxxxx
> > > http://www.create.ucsb.edu/mailman/listinfo/sc-users
>
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******************************************
/* Joshua D. Parmenter
http://www.realizedsound.net/josh/

“Every composer – at all times and in all cases – gives his own  
interpretation of how modern society is structured: whether actively  
or passively, consciously or unconsciously, he makes choices in this  
regard. He may be conservative or he may subject himself to continual  
renewal; or he may strive for a revolutionary, historical or social  
palingenesis." - Luigi Nono
*/