[PD] (no subject)

[quelqu'un d'autre]

Hi!
    I am building a synth with pd and want to use a triangle wave oscillator 
with symmetry modulation.
I know how to make a triangle wave oscillator:

phasor~
cliped~ at 0.5
multiplied by two
and substracted by the original phasor signal

but i cannot figure how to change its symmetry without using an infinite 
variable to get a perfect sawtooth waveshape. If someone could help me, i 
would want an explanation for doing that oscillator. I am not an engineer, 
so a mathematical equation would not help me a lot.
Thanks for any help.
                                Dany Lebel

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