Forgot to make sure this one was sent to the list.... Sorry...

------ Forwarded Message From: Michal Seta mis@music.mcgill.ca Date: Sat, 11 Aug 2001 01:49:27 -0400 To: Nicolas Lhommet nlhommet@netcourrier.com Subject: Re: [PD] can one osc~ read several partials?

On 8/10/01 8:49 PM, "Nicolas Lhommet" nlhommet@netcourrier.com wrote:

I can't find any tabosc~ object in pd. Is it an external ? I would like to play waveforms instead of a sum of oscillators. Should i use tabreceive~ ?

Sorry, I couldn't look it up and my memory sometimes chops a few bits off stuff. I meant tabosc4~ (look in <pd_doc>/5.reference)

Also I said: "[snip] send an array a message along the lines of 'sinusoid' with a bunch of parameters [snip]". I meant sinesum or cosinesum (same help patch).

Another related question: we got the osc~ object for a cosine oscillator, phasor~ for a sawtooth oscillator. But i'd like to use triangle, square or pulse oscillator too. What is the best way to generate such waveforms in pd and use them at any frequency ?

That's a little trickier. Create an array and feed it the file I attached for triangle/square. Use soundfiler with -resize switch to adjust the table size for the triangle/square to fit in well. And there you go with your triangle and square wave generator using tabosc4~.

Ah, and check <pd_doc>/3.audio.examples patch 09.pulse.spectrum.pd and 11.pulse.width.mod.pd for some examples of using pulse. Probably not exactly what you're looking for but it's a nice way to generate an array filled with pulses to your liking.

Cheers

./MiS

"To be is to do" - Socrates "To do is to be" - Sartre "Do be do be do" - Sinatra "Just do it!" - NIKE "It" - Stephen King

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