sethophone

sethophone!

the sethophone is a one and a half octave analog keyboard synthesizer inspired by the tomophone, made by one mr. tom cutler. each key on the sethophone pushes a switch which creates a voltage unique to that key. this voltage is fed to a voltage controller oscillator (VCO) which produces square, triangle, and sine waves at a frequency corresponding to the key pressed. these three waveforms are mixed together in varying amounts with the three slide pots before passing through a variable frequency low pass filter. the output drives a guitar or bass amp. the low octave range is C2-E3 (~ 65-165 Hz), high octave is C3-E4 (~ 130-330 Hz).

sethophone.mp3 has short samples of the 'ophone by itself, with distortion, delay, and chorus. cool!!!

the tomophone	the 17 keys are from an old piano, thank you scott	key guide pins
key springs	switchboard with tuning resistors	switchboard in the ophone
upsidedown circuitry	the controls are: slide pots for square, triangle, and sine waves, octave selector, filter frequency, and volume
blue LED points!

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