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What's "Source of Uncertaintly" and how is it diff
MUFF WIGGLER Forum Index -> Buchla, EMS & Serge  
Author What's "Source of Uncertaintly" and how is it diff
Rex Coil 7
Thank you for putting up with my new user questions, and sincere apologies if I got the name wrong.

So how is that particular circuit/module (panel?) different from other modules/sources such as mixed LFOs or combining various other signal sources to create "uncertain" results?

Thank you.
mathomas
Rex Coil 7 wrote:
Thank you for putting up with my new user questions, and sincere apologies if I got the name wrong.

So how is that particular circuit/module (panel?) different from other modules/sources such as mixed LFOs or combining various other signal sources to create "uncertain" results?

Thank you.


My take:

I guess, to be ultra-pragmatic about it, when it was invented its flavor of uncontrolled and semi-controllable (in time, amplitude, and frequency of recurrence, manually and via CV) randomness was unique. It still is different and useful, but other modules, esp in other formats, have reproduced and innovated on these ideas. In Buchla-land the 266e is still the standard — pretty impressive staying power, IMO.

If you can efficiently mix up some LFOs to reproduce these functions, more power to you we're not worthy , but I think you’ll need to have an LFO or 16 in the Buchla lineup first and a lot of CV mixing and scaling. You could use up all your cycling envelopes and mixers pretty quickly I’d guess, and still not hit on “quantized random voltages” (because random), and also have no envelopes for your voices left over. (But I admit to not being a particularly savvy patcher, so someone will probably prove me wrong! It happens a lot).

Ready to be proven wrong on any front, as always. This is fun!
The Junglechrist
Nothing better than three video on the subject with mr vgermuse aka Todd Barton :

https://vimeo.com/137830765
https://vimeo.com/137844373
https://vimeo.com/137848890
Drillionaire
This is the most thorough explanation of what the 266 does that I've ever come across. (click on PCB 1 and PCB 2 for the explanations among the build documentation) https://modularsynthesis.com/roman/buchla266/266sou.htm

As for the 266e, I haven't looked at the source code closely so I can't confirm that it implements the same functions exactly in software, but I do know that there is a true analog random voltage that is sampled by the CPU for all of its random computations, making all of its outputs true random voltages.
Kent
Short answer: controllability, scaling, clocking, ease of use.
Rowan
Rex Coil 7 wrote:
Thank you for putting up with my new user questions, and sincere apologies if I got the name wrong.

So how is that particular circuit/module (panel?) different from other modules/sources such as mixed LFOs or combining various other signal sources to create "uncertain" results?

Thank you.


There are a couple of patch examples on the Doepfer site the show how to achieve two of the functions of the SOU, the Sample & Hold and Fluctuating Random Voltages sections with Doepfer modules.

http://www.doepfer.de/a100_man/a100_patch.htm

I found this very helpful when I was trying to get my head around what the SOU does and how it does it. As you'll see from the patch, it takes a fair few modules to replicate the function of one of the Fluctuating Random Voltage units and the SOU has two of these!

The Doepfer A-149-1 replicates the Stored Random Voltage and Quantized Random Voltage sections of the SOU, the description of operation is pretty good on the product page.

http://www.doepfer.de/A1491.htm

You've also got noise source that produces three different colours of noise and a integrator/slew processor.

When you add all these components together you've got a hell of a lot of functionally in one module which would probably take a whole row of euro modules to approximate.
Rex Coil 7
Thanks folks. I'm doing some work for a person that is a user of this type of synth gear, and in doing my research about the type of sounds that person creates I started getting all starry eyed about it all. Then I saw the cost of even just an Easel ($5k+) and I quickly got all "cold water peckered" about buying into this type of synth gear.

That said, I'm attempting to see how far I can get with just my ~mundane~ Euro and 5U synth project towards those ends. I believe I've got a good start on it with various wave folders, FM-aid (really nice circuit, BTW), Ring Mods, and distortion. Here's my Euro "modulation cabinet" (as I've named it)...

... apologies for the "fakey synth" done up on Modular Grid ....



I already own everything in the mock up, including the 16U rack ... I'm still building the bus bar power distribution system for it so I've got Euro modules all over the place .....










Annnnd ... here's some of the controllers ....











I'm really into the sounds these Buchla/Serge type synths are capable of, but I've already spent close to $10k on 5U and Euro so it looks like I'm going to have to make do with what I have to create those sounds. I'm ~flush~ but I don't want to go into debt for an Easel (or other).

I'll be meandering around in this subforum and trying to learn all I can about these systems.


Thanks for the very helpful posts so far. I appreciate the input, and any more that can be provided.

cookie?!?
mathomas
The Junglechrist wrote:
Nothing better than three video on the subject with mr vgermuse aka Todd Barton :

https://vimeo.com/137830765
https://vimeo.com/137844373
https://vimeo.com/137848890


Thanks for posting! I’m pretty familiar with the 266, but had missed these somehow, and they are really great.
Revok
Rex Coil 7 wrote:
I'm really into the sounds these Buchla/Serge type synths are capable of, but I've already spent close to $10k on 5U and Euro so it looks like I'm going to have to make do with what I have to create those sounds. I'm ~flush~ but I don't want to go into debt for an Easel (or other).


There's always DIY, Rex. twisted
Rex Coil 7
Revok wrote:
Rex Coil 7 wrote:
I'm really into the sounds these Buchla/Serge type synths are capable of, but I've already spent close to $10k on 5U and Euro so it looks like I'm going to have to make do with what I have to create those sounds. I'm ~flush~ but I don't want to go into debt for an Easel (or other).


There's always DIY, Rex. twisted
lol lol lol

Yea, as if I don't have enough to do as it is!

thumbs up lol Mr. Green hihi

Computer project.
5U Modular project.
Euro Modular project.
Slide guitar project.

Pffftt! ...


Why buy it when I can spend twice as much to build it myself.


thumbs up lol
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