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The free-running frequency (no hand near the antenna) of this variable oscillator should ideally be the same as that of the fixed frequency oscillator - making the difference of these two frequencies equal to zero
It was further developed for special needs of Theremidi Orchestra
" expanding it to include the other-worldly Woggle CVs (stepped voltages with decaying sinusoids edges)
A VC resonance input is provided to modulate and even clip the sine wave produced by the filter feedback loop
but it should also bring it into a more linear mode of operation
TouchTone 4029 DIY Kit Power Module The free-running frequency (no handTouchDescription: TouchTone is a feedback amplifier system using all six inverters (inverting amplifiers) of a CMOS 4049 chip. Use the inverters in combined digital analog mode. Two pairs are used as variable frequency oscillators (lower and high frequencies) and third pair is used in mixed amplifying filtering oscillating (feedback) mode to play around with the existing pads all over the system. Combining touchable pads in various manners can bring
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