James Perone's Theremin Page


This page will always be undergoing revision and expansion--check back often!

 

Some Background:

It all started out as a mistake. Russian inventor Lev Termin (1896-1993) was working on a radio in the late 1910s when he accidentally caused the device to howl. As a musician, Termin realized that the electronic principle upon which he had stumbled could be harnessed. Termin, whose name was Anglicized as Leon Theremin patented his thereminovox in 1920, moved to the United States and continued to refine his invention.

The theremin works on a principle similar to the difference tones familiar to most musicians through the process of tuning. The instrument contains pairs of oscillators, with one of each pair operating at a fixed frequency. The entry of a hand into the magnetic field surrounding the pitch antenna will cause the body to act as a resistor, thereby changing the frequency of the non-fixed part of the circuit. What we hear is a tone representing the difference between the two frequencies. More detailed descriptions of the workings of the theremin are widely available, and a number of the web links below provide that detail, as well as schematics of instruments from the past 90 years.

 

Links:

Finally, click here for a Theremin-related photo currently making the rounds on the Internet (It's an example of what someone with Photoshop and too much time on their hands does.)

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