[PD] phasor~ and osc~ right inlet: exact timing (was: phasor~ and osc~ right inlet: signal?)

Roman Haefeli reduzierer at yahoo.de
Sat Apr 17 00:16:11 CEST 2010

Thanks, Frank, for mentioning it again and confirming that it works.
I'll definitely check this one out.

Also many thanks to Mike who provided the patch.


On Fri, 2010-04-16 at 20:19 +0200, Frank Barknecht wrote:
> On Fri, Apr 16, 2010 at 01:37:37PM +0200, Roman Haefeli wrote:
> > To sum it up, in most cases exact timing can be achieved, but the exact
> > timing for the phase reset is _really_ missing (and is actually
> > essential).
> Well, Mike's version for a clock-accurate phasor~ clone actually is
> pretty good and indeed working. And it's very simple and elegant as well.
> You start with making a phaseshifted phasor~ by sending the phasor~ through a
> [wrap~] as is used a lot in Miller's book and the docs when building synced
> phasor signals for granular synthesis or windowed sample playing. 
> If you add some value to the phasor~ signal, the wrap~-phasor will just
> be phaseshifted by that value. So adding 0.5 to the phasor~ will give
> you a phasor~ in the end that is 0.5 out of phase from the original.
> Mike's trick then is to take a snapshot~ of the original phasor at the
> moment of the desired phase resetting.  If you substract that value from
> the original phasor, you get a phasor~ shifted up or down just by the
> value it had when the phase was last reset.
> Now you can add in the desired phase value again to get a wrap-phasor that is
> out of sync to the original phasor in exactly the desired fashion.
> Ciao

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