Muff's Modules & More

[Demi Jon]

I use the Random Voltage output from my Doepfer Noise/Random module for practically every patch (and thinking about getting the Doepfer Source of Uncertainty clones), but I'm wondering about getting these voltages a bit slooooooowwwwer.

Would a clock divider do this? Any suggestions?

[polyroy]

You should be able to alter the speed by tweaking the knobs. Is it the red and blue ones? I can't remember, haven't had a A118 for about a year. Really good random source though, if it was clockable and had CV, it would be fantastic.

[Jaspo]

Sample and hold (a148 or Sport Modulator) with a slow trigger.

My a118 always goes into the Sport Modulator which is usually triggered by a clock divider.

[mhtones]

[Repeater]

Put a big resistor in series with the Rate pot or hunt down the timing capacitor(s) and replace with one of a greater value. Either of these mods could be made switchable so you don't lose the original settings. For voltage control, add a vactrol. I was considering modding my A-118, but didn't have the time before selling it.

You could make an similar patch with a noise source, sample & hold and a slew on the output. IIRC the "colored" outputs on the A-118 are just passive RC filters.

[itijik]

I fully expect him to reply, "Rate pot?...OMG!"

or at least it would make me smile

[nickster]

If you do decide to get the a-149-1 then this is triggered by an external LFO clock so you can set the pace as slow as you like by reducing the freq on the LFO.

[Demi Jon]

Thanks for the replies so far -- in terms of the s&h (a module I don't use nearly often enough), what I am looking for is not randomness in pitch (well, OK, I am looking for that too) but randomness in time. And slowed down time (yessss i know about the rate knob! ). So y'know it goes:

Boop
...
boop.....................boop......................................... .......boop
...
...
boop......boop...................boop
...
.........................boop.

How can I do that with the s&h (I'm at work so can't try it out right now)?

[Cat-A-Tonic]

[DGTom]

Trigger the S&H with a VCLFO, process the output of the S&H with something that can invert / offset / slew then feed that back into VCLFO rate. Even better if you have VC Slew in there.

if you just invert the S&H output voltage, imagine the S&H grabs a high voltage, say +6V, then -6V goes into the VCLFO, there will be a long gap until the next sample because its slowed right down.

If you have a dual S&H you can even dedicate one S&H cell to the feedback (trigger that one from a divider clocked by the VCLFO) & get even funkier.

If you don't want to use a VCLFO - say you want all this to happen in time(ish) with a fixed clock - then replace the VCLFO with something like the Doepfer 163 VC Divider, that way your S&H can go faster / slower without being totally asynchronous.

[wwall]

[Demi Jon]

DGTom and wwall -- thanks! I'll try this when I get home.

[Rigo]

[Demi Jon]

Yay, just had heaps of fun trying out all these ideas.

Thanks all!

[Gribs]

Sample hold, slew/smooth the output, feed into a comparator.