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jhack@comcast.net

synthesizer problems

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hello everybody. so i am building a synth using a bunch of 555 astable circuits with an octave up feature that works like this: i use  a cd4066 quad bilateral switch to connect a second timing resistor of the same value as the one in the astable circuit when the control pin is at logic 1. i tried te circuit without the timing resistor and it worked fine, but then i tried it with the 4066 and the second resistor, and for some reason, even when the second resistor isnt connected in parallel, it effects the astable circuit.  i think there may be some leakage, or just something i dont know about the 4066, but i could really use some help. thanks, i appreciate it.

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drawing it would be tedious, but a good way
if your more computery, you can do it in paint
either way, id like to see it, because ive been looking for a simple audio oscillator cicuit myself

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yeah, this i sreally simple if you dont have the whole octave-up thing goin on. its just  abunch of 555 astables w/ their outputs connected via a diode to a 741 summing circuit, that also knocks off  the harmonics. then just connect the 741's output to a 8 _()_ speaker decoupled with a 1 uF cap.

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