Pitch-shift

[Charles Gran]

I would like to apply pitch shifting to a real-time audio signal
(-iadc).  I have been able to use harmon and am wondering if there are
other options for real-time performance.

Charles


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[Victor Lazzarini]

Try pvscale.

----- Original Message -----
From: Charles Gran <chasgran@...>
Date: Tuesday, June 30, 2009 5:11 pm
Subject: [Csnd] Pitch-shift
To: csound@...

> I would like to apply pitch shifting to a real-time audio signal
> (-iadc).  I have been able to use harmon and am wondering
> if there are
> other options for real-time performance.
>
> Charles
>
>
> Send bugs reports to this list.
> To unsubscribe, send email sympa@... with body
> "unsubscribe csound"

Dr Victor Lazzarini, Senior Lecturer, Dept. of Music,
National University of Ireland, Maynooth

[joachim heintz]

... and if you need a simple example:

<CsoundSynthesizer>
<CsOptions>
-odac
</CsOptions>
<CsInstruments>

sr = 44100
ksmps = 16
nchnls = 1
0dbfs = 1


instr 1
ifftsize = 1024
ioverlap = ifftsize / 4
iwinsize = ifftsize
iwinshape = 1; von-Hann window
Sfile = "fox.wav"
ain soundin Sfile
fftin pvsanal ain, ifftsize, ioverlap, iwinsize, iwinshape; fft-
analysis of the audio-signal
fftscale pvscale fftin, p4, p5, p6; scale
aout pvsynth fftscale; resynthesis
                out aout
endin

</CsInstruments>
<CsScore>
i 1 0 3 1 0 1; original sound
i 1 3 3 1.5 0 2; fifth higher without ...
i 1 6 3 1.5 1 2; ... and with different ...
i 1 9 3 1.5 2 5; ... kinds of formant preservation
e
</CsScore>
</CsoundSynthesizer>



Best -

        joachim

Am 30.06.2009 um 20:02 schrieb Victor.Lazzarini@...:

> Try pvscale.
>
> ----- Original Message -----
> From: Charles Gran <chasgran@...>
> Date: Tuesday, June 30, 2009 5:11 pm
> Subject: [Csnd] Pitch-shift
> To: csound@...
>
> > I would like to apply pitch shifting to a real-time audio signal
> > (-iadc).  I have been able to use harmon and am wondering
> > if there are
> > other options for real-time performance.
> >
> > Charles
> >
> >
> > Send bugs reports to this list.
> > To unsubscribe, send email sympa@... with body
> > "unsubscribe csound"
>
> Dr Victor Lazzarini, Senior Lecturer, Dept. of Music,
> National University of Ireland, Maynooth

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To unsubscribe, send email sympa@... with body "unsubscribe csound"

[Charles Gran]

Thanks Joachim, It works beautifully.

For other beginners, I made this work in real-time.

I remember that, somewhere out there, is an example in which you use a
keyboard to set the transposition of the audio signal, which is pretty
cool too.

Charles

<CsoundSynthesizer>
<CsOptions>
-odac4 -iadc4 -b256 -B1024 -M9
</CsOptions>
<CsInstruments>

sr = 44100
ksmps = 16
nchnls = 1
0dbfs = 1

initc7 8,13,1

instr 1
ifftsize  =  1024
ioverlap  =  ifftsize / 4
iwinsize  =  ifftsize
iwinshape =  1                                                    ;
von-Hann window

kscal ctrl7 8, 13, .5, 2
ikeepform = 0
igain     = 1

ain in
  fftin     pvsanal ain, ifftsize, ioverlap, iwinsize, iwinshape ;
fft-analysis of the audio-signal
  fftscale  pvscale fftin, kscal, ikeepform, igain               ; scale
  aout      pvsynth fftscale                                     ; resynthesis
out  aout+ain
endin

</CsInstruments>
<CsScore>
i1 0 3600
e
</CsScore>
</CsoundSynthesizer>


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