playmodes

I'm trying to figure out how to implement a skewness feature for an LFO i've been working with lately.

With skewness i'm referring to something like this, applied to a sine wave:

http://therionorteline.files.wordpress.com/2011/12/skewness_posnegpict.jpg

Does anyone have a clue on the maths behind this?

could this be accomplished with some kind of simple formula?

or maybe it's a matter of manipulating the source phasor?

With skewness i'm referring to something like this, applied to a sine wave:
http://therionorteline.files.wordpress.com/2011/12/skewness_posnegpict.jpg

Does anyone have a clue on the maths behind this?
could this be accomplished with some kind of simple formula?
or maybe it's a matter of manipulating the source phasor?

wave-skewness

Now i just need to figure out how to "decompile" that kink process into a series of math operations... i want to have this done in max, not msp.

Shouldn't be too much pain, but maybe someone already did this process or have a suggestion?

Actually, i have seen in some soft synthesizers the ability to skew a triangular waveform until its transformed to a sawtooth. I think it was an LFO tool in FlStudio, which was simple and clean, and never figured out the algorithm behind it..

i attach the resulting patch of this research

Just in case this is useful for someone,
i attach the resulting patch of this research

Wave skewness