[PD] pv/fft based realtime pitch shifter

[Alexandre Torres Porres]

sure, this was the issue https://github.com/pure-data/pure-data/issues/697

it would particularly ruin this patch because I had different block sizes
for reading and writing, because of the big FFT block size

Em dom., 24 de dez. de 2023 às 08:03, Orm Finnendahl <
orm.finnendahl at selma.hfmdk-frankfurt.de> escreveu:

> thanks for the notes/links. I made the granular counterparts a long
> time ago (~20 years) so it might be interesting to see whether things
> have changed. Concerning delread4~: Can you send me links/information
> about what was wrong?
>
> --
> Orm
>
>
> Am Sonntag, den 24. Dezember 2023 um 01:44:09 Uhr (-0300) schrieb
> Alexandre Torres Porres:
> > I see your example is based on an example from an older version of Pd. In
> > Pd 0.54 I have updated the examples to just use [s~]/[r~] instead of
> > [tabsend~]/[tabreceive~]. Use the latest version for a bug free
> [delread4~]
> > please.
> >
> > btw, my live electronics tutorial has examples that show how to do these
> > kinds of things and there's an example which is solely for pitch
> shifting,
> > if you want just that and no time stretch/compress.
> >
> > See
> >
> Part.09-Spectral.Processing/34-Advanced/3.Phase.Vocoder/1.TimeStretch-PitchShift/
> > *3.Ring-Buffer-Pitch.Shift.pd*
> >
> > I haven't updated my examples yet to just use [s~]/[r~] instead of
> > [tabsend~]/[tabreceive~], will do it soon , but here's a screenshot
> >
> > [image: Screen Shot 2023-12-24 at 01.43.02.png]
> >
> >
> > cheers
> >
> > Em dom., 24 de dez. de 2023 às 01:29, Alexandre Torres Porres <
> > porres at gmail.com> escreveu:
> >
> > > Hi, there's [else/pvoc.live~] which is a fft/phase-vocoder based real
> time
> > > pitch shifter and time stretcher. It's also based in Miller's phase
> vocoder
> > > example. It uses a delay line but I use the [del~] object from ELSE
> instead
> > > of [delread4~] (I prefer to use the new name instead of the old [vd~]
> one).
> > > At the time I had to use this object from ELSE instead because
> [delread4~]
> > > had a bug that got fixed this year.
> > >
> > > There's also [else/stretch.shift~], which is granular based but it's
> quite
> > > the same, just not FFT based, and I also like to interpret FFT as a
> form of
> > > granular by the way.
> > >
> > > Cheers and happy holidays
> > >
> > > Em sáb., 23 de dez. de 2023 às 10:47, Orm Finnendahl <
> > > orm.finnendahl at selma.hfmdk-frankfurt.de> escreveu:
> > >
> > >> Hi,
> > >>
> > >>  as I couldn't find examples for a working fft/phase-vocoder based
> > >> realtime pitch shifter for pd online, I made one based on the
> > >> I07.phase.vocoder example of Miller Puckette, replacing the tabread4~
> > >> with a vd~.
> > >>
> > >> I attach it, as some might have a use for it.
> > >>
> > >> Happy Holidays to everybody!
> > >>
> > >> --
> > >> Orm
> > >> _______________________________________________
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> > >
>
>
>
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