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paulovski
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Joined: 09/19/2012 - 06:13
UMF Envelope Follower

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It's like Christmas innit?

Here's an envelope follower. Along with some in/out variations of the setup.
There's a Beatbox on channel 1 that's providing the envelope for all the setups with the exception of 'Source Tr (igger)'. The source envelope for that is provided by 'Alt lnput'. So you don't need to play the sequencer for that one. Just play it. If you see a keyboard anywhere, then play it.

So, press 'play' and go to 'EF'. There's an input module in the top left corner. The envelope source is coming in there.

There's a cable running from there, down to Input 1 of a 3>1 mixer in the bottom right corner.
This is the audio mixer.
Input 2 is for the internal oscillator. Input 3 is for an external input. It's not doing anything in this one.

Bottom Left is a 2>1 mixer. It's output (marked with song automation) is the 'depth' control. Right now, it's on zero. As are all the other variations.
Bring it up.

If you try other envelope sources, make sure those machine are outputting a healthy level.
There are a couple of lag processors in series. Feel free to play around with them. But you need a bit of lag.

SToons Music
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Joined: 03/01/2018 - 02:48
LOL r-i-d-i-c-u-l-o-u-s!

LOL r-i-d-i-c-u-l-o-u-s!

One thing - you forgot to mention the pleasure to be derived from playing with the Cutoff and Res but I guess that's kind of an assumption where EF's are concerned.

Actually, this is better than last Xmas.

SToons Music
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Joined: 03/01/2018 - 02:48
Dang, definitely felt free to

Dang, definitely felt free to play with the lag. It's like an EF on steroids.

I think someone must have installed a Mod unit in your brain at birth.

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UncleAfx
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Joined: 03/06/2016 - 20:08
Yeah I guess I opened a whole

Yeah I guess I opened a whole new world of possibilities with that one connection. It will take me forever to fully understand, but it will be fun trying. ;-)

SToons Music
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Joined: 03/01/2018 - 02:48
And if you connect the NOTE

And if you connect the NOTE CV to the Res....

Anyhow, wanted to let you know at least one person is gonna be unwrapping a lot of gifts tonight.

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SToons Music
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Joined: 03/01/2018 - 02:48
I did manage to preserve

I did manage to preserve paulovski's A1 pattern, that's a plus.
http://www.singlecellsoftware.com/node/17830

nitro27
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Joined: 10/11/2015 - 18:27
Took me a good few hours to

Took me a good few hours to work that one out. You and that pan module....

For anyone curious, I've stripped out everything but the ABSOLUTELY essential parts here. The trick for me was that the pan CV needs to be biased hard enough that its default is panned all the way one way.

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paulovski
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Joined: 09/19/2012 - 06:13
Nice one Nitro 27. That

Nice one Nitro 27. That cirquet's a bit more rational :). And thank you very much for the inspiration for it in the first place.

ST. Yeah, there's some strange activity out of that resonance control. If you run the BPF through the oscilloscope and bring up the res control, it draws a weird little curve. There might be something in that with it's control input. It plays havoc with those, velocity controlled, synced  oscillators.

Hive mind. Let's do this :)

Can we have some new synths please Rej? Oh, hang on. No rush.

 

SToons Music
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Joined: 03/01/2018 - 02:48
Huhn..

Huhn..
Isn't that odd? Works fine for me lol.

Gimme two rocks, I (debatably) make music, don't really think that much about gravity while doing it.

P.S. Cranking up the Beatbox send (mix was max in mod) or automating it? Yes.

SToons Music
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Joined: 03/01/2018 - 02:48
@Nitro - nice! FWIW was

@Nitro - nice! FWIW was playing with your example and thinking, darn, kinda sucks how you just have to accept the little clicks that some tasks coax out of the Modular. Then I noticed you left the Beatbox on the main mixer at about 1%. ;-p

paulovski
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Joined: 09/19/2012 - 06:13
The Beatbox direct thru is an

The Beatbox direct thru is an option that I wouldn't generally use. I did it here just for soloing purposes.

SToons Music
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Joined: 03/01/2018 - 02:48
I apologize profusely in

I apologize profusely in advance. I haven't exercised (exorcised?) with 12 tone rows in a while, seemed like a good time. A liitle from column A, a little from colon B.

Roll the dice
A D G# F# A# C# B G F E D# C

Edit: last mod 8:36 PM 21 10 18

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paulovski
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Joined: 09/19/2012 - 06:13
Colon B? What you on about?

Colon B? What you on about?

Nice

SToons Music
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Joined: 03/01/2018 - 02:48
"Nice" - meh, getting there.

"Nice" - meh, getting there. The new gifts have a lot of moving parts that all interact and take some getting used to. Perfect!

SToons Music
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Joined: 03/01/2018 - 02:48
Stripped down he says. Ugh

Stripped down he says. Ugh lol. Us unedumacated folk need ModSynth For Dummies style instuction.

But seriously, thanks guys. This is starting to sink in. Maybe not, but now I have a nice small tidy AM inducing multi-wave osc to tinker with.

I *think* I'm starting to get it. For you to create the EF it had to function like the DADSR or other envelopes that only produce positive voltage. So that was the purpose of creating this?

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SToons Music
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Joined: 03/01/2018 - 02:48
OK, let's see if I got this

OK, let's see if I got this right.

The EG is sending a positive signal into the Pan module. The top waveform generator is modulating that signal which is producing the positive "biased" (?) waves. Very cool. I think.

Why is it also necessary to feed the Pan output back into the Mod input? Cleary it is, I tried A/Bing without it.

Also, see attached. That looks familiar as well; -p

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paulovski
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Joined: 09/19/2012 - 06:13
Yes, yes, yes. That pan

Yes, yes, yes. That pan module is acting like an envelope follower for control signals. A DC signal runs through the pan module. A modulating AC signal drives the pan module. Output B provides a DC version of it (with the added bonus, that output A provides an inversion of it).

And that's fed into the mod input, because the last thing I want to do, here, in this particular situation, is drive that mod input with an AC signal. Filters wouldn't respond too well, if I did.

That make sense?

paulovski
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Joined: 09/19/2012 - 06:13
One of those 'doh' moments.

One of those 'doh' moments.
I've been mucking about with some wave shaping. If you ring modulate certain, simple waveforms with themselves, the result is a doubling of the frequency, which can be a lot of fun (two rates out of one LFO). That's all by the by here. A byproduct of doing this is that, no matter what the (bipolar) signal is, and whether it sounds any good or not, the result is full wave rectification. These, previous, EFs use half wave rectification, which works and is fine. But it takes, quite, a few modules to set that up. And this takes, just, the one. I won't bang on about the difference between the two. But, both methods dispose of the negative stage of a bipolar signal. The important bit, here, is that that negative stage is gone. EFs don't care how, or where.
If you press 'play', that, lower, scope will display a, rectified, Beatbox input. All you have to do is slew the output of that 2>1 mixer. And that'll give you a CV that rises with the amplitude of the input. Job done. You could do that in your sleep.

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SToons Music
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Joined: 03/01/2018 - 02:48
Cool!

Cool!

SToons Music
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Joined: 03/01/2018 - 02:48
For reasons that fast concern

For reasons that concern something else I'm trying to do in Caustic (making a wave that looks like a square but has a triangle where the neg part of the square is), I got back into this rectification stuff today, did a site search and read this again. Now that I'm starting to understand things a bit better, this comment written above is confusing me and of course sparking my curiosity:

Quote: "If you ring modulate certain, simple waveforms with themselves, the result is a doubling of the frequency, which can be a lot of fun (two rates out of one LFO). That's all by the by here. A byproduct of doing this is that, no matter what the (bipolar) signal is, and whether it sounds any good or not, the result is full wave rectification."

I'm not getting this. In the attached file you can see in Modsynth 1. that when a sine is ring modulated with itself it creates a polar wave (DC) but it is not rectified at all. This can be cleary seen by adding a negative current to it to make the oscilloscope happy.

In 2. full wave rectification is clear when the neg signal comes into play.

3. shows essentially the same thing as 1. except that if either of the waveform generators are switched to a square wave full rectification occurs. So what am I missing - how can RingModding a waveform with itself achieve full rectification?

I still love the env follower though :)

4. was just for fun.

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paulovski
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Joined: 09/19/2012 - 06:13
Well, if I wrote that post,

Well, if I wrote that post, today, I wouldn't say that (unless I was talking about a square wave). What happens depends on what it is. It's a, bipolar, multiplication. Something, something, multiplying negatives with negatives.

Maybe you could use a square wave to cross-fade between itself (or DC) and a, synced, triangle.

SToons Music
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Joined: 03/01/2018 - 02:48
Yes, maybe lol.

Yes, maybe lol.

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SToons Music
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Joined: 03/01/2018 - 02:48
I was still curious after

I was still curious after reading your response - I knew that multiplying two bipolar squares resulted in cancellation. Then it dawned on me. If you recall I did an annoying number of ring modulation vs amplitude modulation posts a few years ago in my certified newbie manner.

So you were simply confusing RM and AM here, easy to do. With AM, squares go unipolar and cancel out but every other waveform goes unipolar (positive bias of course) and double in frequency.

With RM, all waveforms go unipolar and remain at the same freq. Only squares remain squares, all other waveforms do, funny, things.

Sorry to seem nitpicky here and for polluting this thread, its more for the benefit of others who may read this.

File attached, again not so much for you because inherently you know or can figure this stuff out.

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