Simulating Cassio keyboards (PT-10)

Hi all,

recently my youtube have been flooded with videos about old Cassio keyboards (especially those related to Teenage Engineering OP-1). Is there any guide/emulation about how to achieve those sounds with SC?

Here they say this keyboard was based on combining pulse waves. How to synthesize this? Any suggestion about how to achieve the crappy sound provided by the small speaker + minimal cabinet size? Convolution?

All the best!

Thanks a lot!

Bit reducing the envelope seems to be a nice trick to produce sound artifacts! I will try some stuff and post some analytic wavetable formulas as soon as I get them.

Faust has the CZ oscillators in its library.

Source is here if you want to pick that apart. Or just compile to SC Plugin.

Apparently, these are an implementation of this pd patch.

Sam

BTW, would it be legal if I sample some old Cassio keyboard, analyze, create a synthesis recipe of it and then publish a quark?