Uglyface LFO/Oscillator volume control

[jmasciswannabe]

Anyone have a suggestion on either how to lower the volume of the oscilaltor or adjust the mix for the 386 signal to be louder? I saw a post last time I was looking for this that mentioned running a diode off the output of the 555 but cant seem to find it now. Thanks.




...image from the Dead End FX build doc!

[jmasciswannabe]

bump!

[jmasciswannabe]

Bump!

[antonis]

Fairground cars ride..??

[jmasciswannabe]

Been a bit and thought I would revisit. Perhaps what I am asking does not make sense or cannot be done. If so, could one of you guys who understand oscillators explain it?  Does the lfo and oscillator produce their own audio signals or are they dependent on the output of the 386 making their volume "fixed." Again, my overall goal is to adjust the mix of the output of the 386 to sit on top of the oscillation/lfo....

[iainpunk]

the signal is used to modulate the oscillator by resetting it every low going edge, the oscillator volume IS the signal volume. its not two systems next to each other with some interaction, its one system driving and controlling the others system.

the only option you have here is to mix some random square-wave fuzz of your liking in with the ugly face. i recommend the bazz fuss because its so simple and harsh, especially if you stack 2 of them in series.

cheers, Iain

edit in the making, ill be back in 15 min.

[iainpunk]

decided to do it in a new post.

what basically happens here is the following:

chapter one GAIN - first the incoming signal gets amplified by the 386, its a lot but its still far from a square-wave.

chapter two COMPARATORS - to make it a true square-wave fuzz the signal needs to go through a comparator, it looks if the voltage is above or below a certain voltage and puts out either a high or low voltage, nothing in between.

chapter three PIN 4 - the comparator they use is pin 4, the reset pin, if the signal's voltage is above a certain threshold voltage, the reset pin is INactive and the oscillator does its thing (switching from LOW to HIGH constantly), but as long as the signal voltage is below the threshold, the oscillator is pulled down and gives a digital LOW output.

chapter four LFO - the LFO determines the frequency at which the oscillator runs.

chapter Five CONCLUSION - if the frequency of the oscillator is lower than the input frequency, it will just be a square-wave, if the frequency is higher, the HIGH state of the square-wave will have the oscillation frequency ''interrupting'' its being HIGH. (sorry for the odd wording, but its all i can think of that makes sense)

cheers, Iain

[jmasciswannabe]

Gotcha! That's what I was afraid of. Thanks for taking the time to explain how it is just one signal.