[sdiy] Possible New Waveform Generator Circuits

[rkmoore at memphis.edu]

My casio cz-101 has an waveform available that just about fits the 
bill of the most popular interpretation of the elusive "spiral wave".  
It has what appears to be a sine wave that is amplitude modulated by a 
saw-tooth wave.  If I remember correctly it's one of the last 
waveforms; 6, 7, or 8.  I'm not at home where the synth is and I 
haven't looked at the waveform on an oscilloscope, I'm just 
remembering the diagram of the waveform on the front panel.  Can 
anyone else verify this?  I also realize that this would just be a 
single waveform instead of the two needed to generate both the real 
and imaginary components, but no mention of 2 waveforms was mentioned 
in the original post anyway.

Richard