[Pd] Other synthesis methods

Chuckk Hubbard badmuthahubbard at gmail.com
Fri Feb 24 05:28:43 CET 2006

I forgot to mention that absolute control of pitch is essential.  I need to
tell it what frequency the fundamental sounding pitch is.  Naturally I want
complicated waveforms, but FM and (I've just discovered) hardsyncing don't

On 2/20/06, Christopher Charles <schraubzwingenhalterung at web.de> wrote:
> Chuckk Hubbard wrote:
> > Hi.
> > My Pure Data Just Intonation sequencing program is up and running, and
> > I'm in the process of making music with it for a dance/music ensemble
> > at my school.  The problem is everyone says it sounds like Mario.  I
> > tried making a granulator, and it sounded good but used so much CPU I
> > couldn't incorporate it into my sequencer.
> > What I do have is 16 harmonics, filtered noise, a bp/lp/hp selector
> > with cutoff and Q control, and adsr sliders.  I have 8 copies of this,
> > each of which only runs when it is changed, and writes its results to
> > a graph, which the sequencer reads.  Thus it is also possible to draw
> > the waveform with the mouse, which I've found can make it a little
> > less predictable.  But too much of that makes it inharmonic, and even
> > so it still sounds very 80's.  I'd like the freedom to work in more
> > sophisticated synthesis.
> > What can I do?
> there are various other ways to shape synthetic sounds, particularly as
> a part in a subtractive synth: have a look at frequency modulation,
> amplitude/ring modulation, oscillator hardsyncing (resetting the phase
> of an oscillator by another oscillator), or pulsewidth modulation. you
> can create very interesting sounds if you gently combine these methods,
> for example feeding a hardsynced oscillator output as a frequency
> modulator into it's own sync source... something that works good on more
> complex signals than sinewaves is having a signal delayed by a (maybe
> amplified, dc'd and shaped) form of itself (having the signal as a
> source for the delay length of a vd~). be sure to check if lfos and
> (adsr-)envelopes applied in any part of your construction (modulation
> depths, frequency microtunings, filter cutoffs, pulsewidths, etc.) can
> do any good. with such techniques, your synths won't sound like mario,
> but more like luigi or princess toadstool.
> another approach might be simple physical modeling: you can create a
> plucked string which sounds crappy in the bass region but fairly
> harp-ish in the upper octaves by sending a short, single triangle- (or
> whatever-) shaped impulse into a feedback loop the length of the note
> frequency^-1. with a slight lowpass applied on each iteration the signal
> will warmly fade out.
> just ask if you have any questions about implementing these techniques.
> some synthesis links ->
> http://www.theprojectstudiohandbook.com/articles17.htm
> mfg
> charlie

"It is not when truth is dirty, but when it is shallow, that the lover of
knowledge is reluctant to step into its waters."
-Friedrich Nietzsche, "Thus Spoke Zarathustra"
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