Hey Spud,
My most popular theremin design was an Optical-Theremin approach I began studying over 10 years ago. Then humorously I had to listen to all the digital people faking it tell me that what I was doing was not a theremin. I am still waiting for their digital results, OK we got the Theremini.
Sound Byte I do believe I could enhance this Optical generated wave shape into that classic opera lady sound, long ago her voice was a gift to me.
I have concluded what makes something a theremin is you just have to give it that name. So let's even touch the thing as long as it captures something beautiful about the original theremin voice, no puny whistle.
With imagination and the optical sensors this could go much further than most people think.
The original Electro-Theremin sounded sweet because the vacuum tube oscillator generated even harmonics. Today my optical approach has good sound with even harmonic overtones.
I abandoned developing my webpage because I am not a musician and interest in the analog theremin has really dwindled over the years. Since cell phone popularity has increase, more people are disconnecting from reality and being absorbed into the new digital world order. They are also becoming easier targets to mug. 0-'
Christopher