Hi,
I made a simple little patch that takes an incoming signal, and a scalar. It scales the signal by the scalar and then feeds it to a cos~ with a couple of little manipulations to make the mapping be to the sine function instead of the cosine function.
My question is, what is this? It's like waveshaping, but it uses the sine function so you can scale the input signal however much you want, and you always get an output value that is between -1 and 1. One of my profs said that it might be akin to FM, but we didn't talk much about it. Is this a common processing technique?
The patch is online at http://www.sphericle.com/pd/sinshap~.pd if anyone wants to look at it.
Thanks! Chad
hi chad,
i think you can call this both waveshaping and phase (or frequency) modulation. maybe you can even say this is the point where both methods 'touch'.
it's waveshaping because it's a nonlinear mapping function. and it's phase modulation with a carrier frequency equal to zero (and a phase offset).
i've used it before in some pieces and i've heard other people mentioning it too.
tom
I made a simple little patch that takes an incoming signal, and a scalar. It scales the signal by the scalar and then feeds it to a cos~ with a couple of little manipulations to make the mapping be to the sine function instead of the cosine function.
My question is, what is this? It's like waveshaping, but it uses the sine function so you can scale the input signal however much you want, and you always get an output value that is between -1 and 1. One of my profs said that it might be akin to FM, but we didn't talk much about it. Is this a common processing technique?
The patch is online at http://www.sphericle.com/pd/sinshap~.pd if anyone wants to look at it.
Thanks! Chad
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Chad Wood -
Tom Schouten