I'm working on a system that will let me move through a wavetable of a filter sweep. I can move through smoothly, but what I can't do is move without changing pitch while I do so. I suspect there is a kind of Doppler effect going on. How do I sweep through without changing the pitch?

http://www.pdpatchrepo.info/hurleur/wavetable_test.pd

I would like to make a hybrid audio/video synthesizer. It should be monophonic, with three oscillators, each selectable square or saw. The difficult part is this: I want to have each oscillator dictate a different RGB value. They add up to make a color, then that signal is drawn like a raster inside a graphics box. Is this possible? Any more ideas? I need this synth to make some wierd effects for a music video.

A phasor normally outputs a "smooth" ramp (stepping at the sample rate) at floating point values from 0 to 1.( 0, 0.1, 0.2, etc.). Do you want it to act like a square wave (0, 1, 0, 1, etc.) or count the integers from 0 to a number? (0, 1, 2, 3, 4, 0, 1, 2, 3, etc.)

Be sure you remember that a phasor~ is not anti-aliased, meaning that the jump from 1 to 0 is perfect and instant. Of course, you can always smooth it out with a lop~ object.

[phasor~ 10]
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[lop~ 5]
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(whatever you're modulating)

I tried placing a sample-and-hold in my patch where the example puts it, but it still seems to go doppler on me. I think I'll just calculate the filter realtime. Thank you anyway!