Nevermind.... I had the damping up, so it sort of blended through the
gaps in the sound. It does the same thing w/ the configuration that
is laid out on the PCB.
The outputs of the 4024 are fine by themselves. Its just after I run
them back into the filter input that they do the weird pulsing thing.
The filter runs fine w/ the input from a separate VCO at all
frequencies. I guess the frequencies are canceling each other out at
points? Its over my head, now.
Im guessing this is the way its supposed to work, but again, as I said
in my first post, please tell me if this is not correct. As mine is
working now, inputting the extra SUB outputs back into the filter make
some cool sounds, but they definitely aren't useable as a playable VCO.
Show quoted textHide quoted text
--- In cgs_synth@yahoogroups.com, "c10h14no2i" <c10h14no2i@...> wrote:
>
> Ummm.. maybe I should have mentioned I made the mod that is in the
> file section.. posted by Dave Brown. I have removed the mod and built
> the circuit as it should be, and the sub osc seems to work the way it
> should. The oscillations do stop at lower frequencies, but the filter
> doesn't do much to the sound when its just pulsing a couple of times a
> second, anyway.
> The high frequencies are still very quiet. Its like they are being
> low pass filtered.. I guess this is a filter, after all. I suppose,
> to use it as a vco, I could build the rest of the VCO circuit on a
> prototybe board (just the tl072 and a few other components) to get the
> saw output.
>