I'm trying to reproduce, on my own, an electric piano sound. I'm open to using any type of synthesis(I actually use the Pyo DSP library ), but I'd particularly like to know how to do it with substractive synthesis, à la Yamaha CP-20/CP-30.
What types of waveforms are the best? How many oscillators? What kind of filters, effects, etc are necessary or interesting?
Most importantly, any advice and details about the envelopes? Is ADSR sufficient? What did the Yamaha CP line used?
I've been playing around a bit, using a few triangle oscillators and distortion, and all, but I'm still finding the result lacking.
Any resources on that would be welcomed.