19 posts / 0 new
Last post
UncleAfx
Offline
Joined: 03/06/2016 - 20:08
Ultra low LFO (with presets)

Caustic Song file (optional): 

Pretty self-explanatory, the first machine is intended for demonstration, the second two are just what I came up with when playing around with it. Everything with automation activated in the first machine can control the lfo speed. So far I haven't been able to figure out how to note sync it, but it seems like it should be possible.

paulovski
paulovski's picture
Online
Joined: 09/19/2012 - 06:13
Cool as. Here's a variation

Cool as. Here's a variation on the theme. This has an optional DC output with optional phase. So you've got the inverted saw that's missing from the front panel of that LFO. The output of the last mixer controls rate. Input 1 of that mixer sets maximum rate.

If you run the output of a mini LFO into the sync input, you can clock to tempo (though not the rate). But, you need a mini LFO to recreate the effect of a mini LFO. And when there are a myriad things an unsynced LFO will do that a synced one just won't, why would you want to? No doubt, you'll think of something :) But, you'd have more fun with that mini LFO in the second patch if it were run into the LFO pitch mod input. 

Caustic Song file (optional): 

UncleAfx
Offline
Joined: 03/06/2016 - 20:08
Yeah I've been having some

Yeah I've been having some fun fiddling with your setup. It definitely seem more versatile than mine. :)

Caustic Song file (optional): 

SToons Music
Online
Joined: 03/01/2018 - 02:48
Guys this is awesome. As soon

Guys this is awesome. As soon as I wrap my little pea brain around it this will definitely be useful.

paulovski
paulovski's picture
Online
Joined: 09/19/2012 - 06:13
Thanks. You will find it very

Thanks. You will find it very useful :)

If I'm planning on using an oscillator as an LFO, the first thing I tend to do is turn all the front panel tuning controls right down, and forget em. For some faster, growly effects, that's, possibly, too slow already. (And that practice might just change a bit.)

So, I've been comparing the two methods here, and, unsurprisingly, they both have their pros and cons. The lower left block is using a band pass filtered control signal into a note input. The lower right block is just using a standard control signal into a note and pitch mod input. I'm using song automation here just to label the relevant controls. Mixer input 1, in the second row will crossfade between the two blocks. Left block on zero (as is). Full up, right block.

And turn the master gain up a bit.

Already, they're both slower than a mini LFO at 30 bpm.

And the left block is the slowest. By quite a margin :). It takes about 6 minutes 20 to complete a cycle (yep). If you're happy with a sine wave output, for the sake of 50 cents, you could swap that wave generator with a sub oscillator and save a bit of rack space. But you don't get as much control over frequency range. If you bring it's mixer output control down to zero, then that's as fast as it will go without mucking about with the front panel tuning controls (which, for a static frequency output, is no real issue).

The right block takes, about, a respectable 47 seconds to complete a cycle. And, with another mixer, you could wack up the gain into the pitch mod input to slow it down some more, but that's starting to get a bit impractical. This block has much better frequency control (the right side mixer output). And you can use input 1 of that last mixer to set maximum frequency.

6 minutes 20. That's ridiculous. If it's got a note input, it's an LFO.

And some more LFO related fun.

Caustic Song file (optional): 

SToons Music
Online
Joined: 03/01/2018 - 02:48
Thanks a ton for the

Thanks a ton for the explanation. 6 minutes to morph sounds ? Lol, now I feel I HAVE to find a use for it, like a personal challenge. But seriously there have already been several occasions where the MiniLFO was still too fast for my needs. In two cases I had to drop the tempo in half and re-edit the song to achieve the desired result. Sucks when you figure that out and you're well into writing already; when you start writing something you often dont know where it will go and occassionaly you find yourself painted into a corner by a limitation you didn't anticipate.

Anyways, I can see immediate applications on pad and rhythm sounds, probably has a better home in ambient music but I learned long ago sometimes the coolest stuff happens either by accident or when you think outside the box.

My first Cage style performance piece can now start with drips of synthesized water occurring randomly every 6 minutes.

SToons Music
Online
Joined: 03/01/2018 - 02:48
Not to hijack the thread, but

Not to hijack the thread, but here's the type of piece I can see major uses for the LFO. Fortuitously (trying to sound smart) I literally started this last night. It's an algorithmic (?) style mess based on Csound piece called Partikkel by Pieman Khosravi. The original uses granular synthesis so direct mimickery is probably not possible.

Mine is SO crappy and basic in comparison but you have to start somewhere. And note I had to start with a tempo of 30 bpm ;-p.? Maybe your LFO can elevate the intent a bit.

Caustic Song file (optional): 

UncleAfx
Offline
Joined: 03/06/2016 - 20:08
What the....?......how the

What the....?......how the hell did I miss this on my own thread?? Damn this stuff is awesome! :-) This is the sort of stuff I figured it would be good for. I knew it would have it's place. 6:20 eh? I never thought to check it. That IS pretty ridiculous. But I wonder if a super long cycle like that would be useful for syncopated rhythms? And ST I wouldn't call that crappy at all. You make some bad ass music! And by all means, feel free to hijack the thread. :-)

SToons Music
Online
Joined: 03/01/2018 - 02:48
OK, here's my contribution:

OK, here's my contribution: Ultra Low LFO Crossfader For Dummies.

Caveat one: I'm a dummy myself
Two: I often learn by dissecting the work of others who clearly have much more knowledge than myself.

Assuming there are others like me I'm going to dumb down your excellent contributions.

In the Caustic file included the Xfader takes 60 seconds at 120 bpm to complete a full cycle to crossfade between sources, in this case a sign and a square wave. I'll get to the 6:20 as my comprehension increases lol.

The "control" note placed in the modular in pattern 1 is a C8 which will create a 60 second round trip.

In pattern 2 the control note is a C1 which changes the crossfade duration, lowering it down to 2 seconds.

If you play the "song" it will take 30 measures to fully crossfade and then you hear an abrupt switch to xfading every 2 seconds.

That's already one heck of a variable LFO guys, awesome work.

So as it stands my first simple but super useful (to me) contribution is nothing but a really really slow Crossfader which I have personally been craving for long morphing atmospheric sounds.

Massive kudos and thanks to UncleAfx and paulovski since this is nothing but a simple application of their work and discovery.

And for you two, man those examples you included (love the Breather, right up my alley) will keep me entertained and occupied for a while, really clever stuff. To dummies anyways ;-p

Edit: note that one can control the level of crossfade using the "Out" level of the Modular waveform generator. If Out is set to zero you will hear both sources equally with no xfade; if Out is full it will xfade fully from one source to another.

Caustic Song file (optional): 

SToons Music
Online
Joined: 03/01/2018 - 02:48
Example of Ultra Low LFO

Example of Ultra Low LFO crossfading atmospheric textures.

Caustic Song file (optional): 

UncleAfx
Offline
Joined: 03/06/2016 - 20:08
That Atmosphere file is

That Atmosphere file is pretty awesome. :-) Sounds like something from DOOM ordeal Space.

paulovski
paulovski's picture
Online
Joined: 09/19/2012 - 06:13
There's life in the old site

There's life in the old site yet. I do like all this activity.

Thanks to UncleAfx's magic filter, I've come up with a few options to get these Wave Generators locked to the sequencer.
There's a file here. And feel free to, just play around with it. But it might not make much sense without the details. Which are here...

https://www.dropbox.com/s/bucl2mve4iluifk/Modsynth%20LFO%20Clock?dl=0

There's quite a lot of them, but it's in plain English. If you have any familiarity with this machine, you'll be fine.

It's better than a Mini LFO.

Caustic Song file (optional): 

SToons Music
Online
Joined: 03/01/2018 - 02:48
https://i.imgflip.com/4ng8d
UncleAfx
Offline
Joined: 03/06/2016 - 20:08
Finally got a chance to spend

Finally got a chance to spend some time and study the LFO clock.... in a bit. I did open it briefly for a quick look just long enough to know I needed the manual. :-) Which by the way, wow man!! Haha I converted that to pdf and it ended up being 7 pages. I hope you didn't have to do that all with your thumbs. :-)

And if anyone wants a pdf version, here's a dropbox link:
https://www.dropbox.com/s/kkadu5yhlewyc5f/Modsynth%20LFO%20Clock%20readm...

Your knowledge of the modsynth though is freaking amazing. I imagine you build this stuff in your head already before you even start adding components. :-) The hardest part about the modsynth is it's so nonlinear, but stuff like this helps a ton. So thanks a ton for posting.

But anyway, with all this attention the modular's been getting lately it's slowly becoming one of my favorite synths...

paulovski
paulovski's picture
Online
Joined: 09/19/2012 - 06:13
Thanks for doing the PDF. 7

Thanks for doing the PDF. 7 pages? Woa

This one's pretty full on :)

Caustic Song file (optional): 

UncleAfx
Offline
Joined: 03/06/2016 - 20:08
Now that's nuts. :-)

Now that's nuts. :-)

Yeah stock Android doesn't let you open .txt's. Since you're rooted, I wasn't sure if you knew. I've been using an app to open them, then copy the text into the Samsung notes app. Then that allows me to convert it to pdf.

SToons Music
Online
Joined: 03/01/2018 - 02:48
My brain hurts. I'm gonna

My brain hurts. I'm gonna need to go play Usher Waltz a few times on the old Humphrey just to clear my brain. Ouch!

SToons Music
Online
Joined: 03/01/2018 - 02:48
@paulovski - "Dual Vel Sync"

@paulovski - "Dual Vel Sync"

Just pulled that down and played it. Seriously? That's ridiculous. I don't whether to clap or just bow down before you. Friggin' amazing.

paulovski
paulovski's picture
Online
Joined: 09/19/2012 - 06:13
Sorry. I didn't realise that

Sorry. I didn't realise that was the case with text. I don't have a rooted phone. I typed it on a phone (?).

Thanks for ups guys. It's very much appreciated. It's nice to see an immediate response :).

But it wouldn't be happening if someone hadn't run a control signal through a BPF, just to see happens. Devine inspiration.

That UMF deserves it's own thread.