[PD] retrigger [tabread4~] sampler without clicks

Miller Puckette msp at ucsd.edu
Tue Apr 22 18:05:12 CEST 2014

Hi Federico -

tabread4~ doesn't interpolate between values of the input signal, or to put
it another way, whast it does as a result of any input sample has no effect
on what it will do on the next one.  (It interpolates across the values of
the table instead.)

One pretty good way to deal with discontinuities when moving discontinuously
between samples is described here:



On Tue, Apr 22, 2014 at 01:00:49PM -0300, Federico Galland wrote:
> Hi,
> I'm working on a granular sampler borrowing parts of the patch on pd-tutorial (http://www.pd-tutorial.com/english/ch03s07.html).
> Everything works smoothly except for one little annoying problem. If I fire the sample before the last one is through, sometimes I get a click at the beggining of the playback.
> This is happening on a percussive sound (rapid envelope attack) so I'm guessing it's got something to do with [tabread4~] failing to interpolate between whatever the last amplitude value was and the first wavetable value.
> This http://crca.ucsd.edu/~msp/techniques/latest/book-html/node63.html can probably be used to solve my problem, but I can't figure out how (or where in the patch) I should implement it.
> Any clues would be greatly appreciated.
> Thanks a lot, and have a good one.
> ps. I tried to comment the patch to make it understandable. It is still, however a work in progress. Let me know of any questions.
> -- 
> Federico Galland <federicogalland at gmail.com>

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