As promised, another page on the GT Theremin.  This time I’ve discussed the operation principles of Theremins in general, as well as overviewed some of the design goals and choices at play for our particular project.  Hopefully this will provide useful background information for future posts on the GT Theremin.  My next post on the Theremin will contain some more detailed information on the circuitry design and operation.  I will be in Seattle for ten days starting Monday, so another update will come sometime after I get back.