Petey Twofinger found and shared this with me:
Its a schematic for a "Robovox"
Looks interesting, but I need to order that chip. Has anyone seen or tried this?
Robot voice...I assume its a ring modulator? Its interesting to note that you can turn it into a tremolo too. Could it be similar to the Thing with the 567 chip?
Any thoughts or anyone willing to try this on a breadboard despite the "warning"?