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Casio CZ waveforms?

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Casio CZ waveforms?

Postby Halon » Wed Oct 09, 2019 5:55 pm

Hi. Was wondering how i would go about to make the waveforms you find in the CZ line of synthesizers e.g SawSquare, DblSine and Reso waveforms. They are all based on Sine waves i believe, so a waveshaper would do the job i guess?

Cheers.
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Re: Casio CZ waveforms?

Postby tulamide » Wed Oct 09, 2019 6:19 pm

Casio used a method called "Phase Distortion Synthesis" for the CZ family. This video demonstrates the math behind it. Make sure to watch the follow-up video as well!

https://youtu.be/EW12RYc7QRA
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Re: Casio CZ waveforms?

Postby Halon » Wed Oct 09, 2019 8:35 pm

Thank you tulamide
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Re: Casio CZ waveforms?

Postby BobF » Fri Oct 11, 2019 11:05 pm

BobsPhaseDistoration.fsm
(909.27 KiB) Downloaded 13 times


Hi, saw this post so thought I would post this. Three methods of "Phase Distortion" . The cool thing about the Heterodyne and Allpass methods is you can use and external sources for your input waveform.

Later then, BobF

Enjoy and PLEASE comment.....
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Re: Casio CZ waveforms?

Postby Phil Thalasso » Sat Oct 12, 2019 11:51 am

Hey all,

thank you tulamide for sharing that youtube treasure-trove and thank you Bob for sharing your work.
Ya'll have a nice week-end

Best regards
Phil
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Re: Casio CZ waveforms?

Postby Halon » Sat Oct 12, 2019 5:41 pm

BobF wrote:
BobsPhaseDistoration.fsm


Hi, saw this post so thought I would post this. Three methods of "Phase Distortion" . The cool thing about the Heterodyne and Allpass methods is you can use and external sources for your input waveform.

Later then, BobF

Enjoy and PLEASE comment.....


Thank you bob 8-)
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Re: Casio CZ waveforms?

Postby Spogg » Tue Oct 15, 2019 1:42 pm

I’ve attached the Casio patent for the technique.

I personally find it fascinating what was being achieved with the relatively limited digital electronics available back in the 80s.

Enjoy!

Spogg
Attachments
Casio phase distortion patent.zip
(2.08 MiB) Downloaded 15 times
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Re: Casio CZ waveforms?

Postby Halon » Thu Oct 17, 2019 11:11 pm

Thank you spogg! :shock: :D
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