[PD] spectral mapping, anyone?

Tue Nov 26 12:48:45 CET 2013

Peiman, It works great! I've been messing various sounds all day now, plus there's a thing in my computer with Barry Vercoe's name on it which I find oddly elevating.However, if I understand the wrap function correctly, it substitutes bin values for values of other bins through whatever function you apply. But the bins are still all derived from the FFT procedure. Or am I missing something there?
What I would like to do is to move from bins to partials, so that they are essentially mapped to harmonic overtones of a given fundamental according to nearest match. Like a clever phase-vocoder Autotune of some kind. 
Is there a way to do that, to the best of anyone's knowledge? 

Much obliged,E.
Date: Mon, 25 Nov 2013 15:12:50 +0000
Subject: Re: [PD] spectral mapping, anyone?
From: peimankhosravi at gmail.com
To: eransachs at hotmail.com
CC: porres at gmail.com; jaime.oliver2 at gmail.com; pd-list at iem.at

yes csound6 should work on windows too as far as I know.

www.peimankhosravi.co.uk || RSS Feed || Concert News

On 24 November 2013 22:06, Eran Sachs <eransachs at hotmail.com> wrote:

Thanks Peiman.Alas, I'm living the life of a PC/Windows user. AFAICT, no csound6? Z

Date: Sun, 24 Nov 2013 20:27:39 +0000
Subject: Re: [PD] spectral mapping, anyone?

From: peimankhosravi at gmail.com
To: eransachs at hotmail.com
CC: porres at gmail.com; jaime.oliver2 at gmail.com; pd-list at iem.at

With spectral warping you can do any frequency-based manipulation, depending on the transfer function. I have one for pd but it requires Csound to be installed and a couple of other externals. See attached. On an intel mac and with pd vanilla 4.5.3/4 this should just work out of the box as long as you have csound 6 installed.  

P

www.peimankhosravi.co.uk || RSS Feed || Concert News

On 24 November 2013 20:12, Eran Sachs <eransachs at hotmail.com> wrote:

oops, I messed up the names. sorry. Once more, with feeling:
Josep,Making harmonic sounds sound inharmonic can be down with spectral shifting. Try looking at Hilbert~ or at spec2_shift~ on extended.

But Alexandre, I'd also would be interested in stuff that can manipulate the spectrum.  I also made a little graphic control to all the cross-synthesis objects in FFTease. if anyone is interested I can post.

A few years ago I tried to replicate the technique that Trevor Wishart refers to as "Spectral Focusing", namely - one that moves the other way - from inharmonic to harmonic sonds, by moving from bins to partials (a little like FFTease's pvtune~, but moving bins to nearest matching partial).

I'm still looking for such an object. Does anyone have any suggestions? 
Zax.

From: eransachs at hotmail.com
To: porres at gmail.com; jaime.oliver2 at gmail.com

Date: Sun, 24 Nov 2013 21:58:50 +0200
CC: pd-list at iem.at
Subject: Re: [PD] spectral mapping, anyone?

Alexandre,Making harmonic sounds sound inharmonic can be down with spectral shifting. Try looking at Hilbert~ or at spec2_shift~ on extended.

But Jaime, I'd also would be interested in that. 

A few years ago I tried to replicate the technique that Trevor Wishart refers to as "Spectral Focusing", namely - one that moves the other way - from inharmonic to harmonic sonds, by moving from bins to partials (a little like FFTease's pvtune~, but moving bins to nearest matching partial).

I'm still looking for such an object. Does anyone have any suggestions? 
Zax.

Date: Sun, 24 Nov 2013 01:05:29 -0200
From: porres at gmail.com
To: jaime.oliver2 at gmail.com

CC: pd-list at iem.at
Subject: Re: [PD] spectral mapping, anyone?

Hi, I'm Alexandre, I can send you stuff
cheers

2013/11/11 Jaime E Oliver <jaime.oliver2 at gmail.com>

These are older, but I understand E. Lyon might re-release them?
http://www.somasa.qub.ac.uk/~elyon/LyonSoftware/MaxMSP/FFTease/

J

On Nov 11, 2013, at 7:23 AM, Jeppi Jeppi <jeppiot at hotmail.com> wrote:

Hi,just looking for some ready to be used spectral mapping effects implemented in pd, anything available?Specifically, just a way to slightly remap harmonics to make pitched sounds inharmonic.

There is a paper by Alexandre http://www.uni-weimar.de/medien/wiki/images/Dissonance_Model_Toolbox_in_Pure_Data.pdf but I couldn't find the link to the sources.

Many thanks in advance!Josep m
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