Yusynth VC Quadrature LFO demo

Moog, Synthesizers.com, MOTM, Modcan, Moon and others... Go big!
Be sure to look into OFFICIAL COMPANY FORA as well.
Post Reply
User avatar
kindredlost
5U skiff friendly
Posts: 6285
Joined: Wed Oct 28, 2009 1:45 pm
Location: FEMA Region 6

Yusynth VC Quadrature LFO demo

Post by kindredlost »

Not as complete of a demo as I think should be done to reveal the full extent of the module, but because I finally got this thing to work I decided to video the results of a standard patch. It's a variation of the "Barber Pole" or "Shepard Tone". It sounded like circle track racing or maybe planes dive bombing so I decided to call it...

[video][/video]


I used four oscillators and amplifiers and sent each quadrant into a separate oscillator & amplifier pair. The same voltage was split with a "Y" cable and sent to adjacent amplifiers. For instance, if the voltage from zero degree output was sent to oscillator one then the same voltage was sent to amplifier two which had the 90 degree oscillator running through it. The voltage from 90 degrees was sent to oscillator two and the same voltage was sent to amplifier three, etc..
This made the quadrature become the delay envelope to the rising/falling portion of the next quadrant pitch only. When the "direction" switch was thrown, the pitch changed direction from rising to descending.
In this demo the voltage control (FM INPUT) was not used. This is a powerful feature which Yves built into the design.

A demo of using the FM INPUT is in order. I did make a short audio piece using the LFO in that manner, but it is not very clear exactly what is the LFO portion.

Introducing "Nauseated Banjos"...

http://soundcloud.com/david-ryle/nauseated-banjos

The VCQLFO has it's LFO rate modified by a Q119 sequencer which is randomly stepped. The "zero quad" out is sent to an oscillator for pitch. The "180 quad" out is sent to transpose the oscillator further. Both voltages from the LFO are sent through a quantizer first. I used a signal processor on each voltage out to dial in what scale and range I needed.
Top
User avatar
yusynth
Common Wiggler
Posts: 144
Joined: Sat Sep 12, 2009 1:27 pm

Post by yusynth »

Nice patch, in particular the Nauseated Banjos !
Top
User avatar
emdot_ambient
Super Deluxe Wiggler
Posts: 3368
Joined: Thu Oct 15, 2009 11:40 am
Location: Frederick, Maryland USA

Post by emdot_ambient »

Saw this on youtube before here...sometimes a simple demo's just what we need :tu:
Top
User avatar
bwhittington
Terrifying Brain Secret
Posts: 6274
Joined: Thu May 21, 2009 11:48 pm
Contact:
Contact bwhittington

Post by bwhittington »

The Banjo one is fantastic, David. I always appreciate your patch notes. I already owe you a PM regarding earlier topics, but I've been wanting to sit down and give your notes a more careful read. I feel like there is a lot I could learn from your patching techniques.

Cheers,
Brian
Top
User avatar
kindredlost
5U skiff friendly
Posts: 6285
Joined: Wed Oct 28, 2009 1:45 pm
Location: FEMA Region 6

Post by kindredlost »

Here is an additional video using the pretty blinky lights from the module. I also used outputs from the LFO into my Oscope.

CAUTION: Epileptics need to wear sunglasses for this one.

[video][/video]
Top
User avatar
The Hamburglar
Wiggling with Experience
Posts: 481
Joined: Fri Mar 25, 2011 7:11 pm
Location: Los Angeles

Post by The Hamburglar »

Damn these clips are awesome, thanks for sharing / no thanks at all for this modulelust.
Top
User avatar
dude
fuck yeah!
Posts: 10001
Joined: Sun Jul 05, 2009 2:08 pm
Location: northeastohio

Post by dude »

the banjos sound like rubber bands which always a very good thing!
Top
User avatar
ach_gott
Ultra Wiggler
Posts: 856
Joined: Tue Sep 02, 2008 2:47 pm
Location: Chicago

Post by ach_gott »

I love these "demos" . I'd happily pay to download the latter two, they're just marvelous. But if they're freely available...
Top
User avatar
spinach_pizza
knobs . . . knobs . . . KNOBS!
Posts: 1055
Joined: Fri Jan 22, 2010 10:31 am
Location: KCMO

Post by spinach_pizza »

It's past time for a new cd, David.
Top
User avatar
The Hamburglar
Wiggling with Experience
Posts: 481
Joined: Fri Mar 25, 2011 7:11 pm
Location: Los Angeles

Post by The Hamburglar »

The first clip is ready to be put to tape.
Top
wmonk
Common Wiggler
Posts: 241
Joined: Thu Jun 03, 2010 1:01 pm
Location: Utrecht, The Netherlands

Post by wmonk »

Excellent :bacon:
Those leds are pretty too. Time to put this module on the to-build-list! :help:
Top
User avatar
diophantine
Super Deluxe Wiggler
Posts: 2671
Joined: Mon Jan 10, 2011 2:50 pm
Location: San Diego, CA, USA

Post by diophantine »

Great tracks!!

Where did you get the PCB for the QLFO? Or did you etch it yourself?
Top
User avatar
kindredlost
5U skiff friendly
Posts: 6285
Joined: Wed Oct 28, 2009 1:45 pm
Location: FEMA Region 6

Post by kindredlost »

@ach_gott : if there is a free download, go for it. If not, let me know how I can get you a copy. PM me. I'm not a big fan of copyright stuff, but I do respect those that make their living that way. Mine is all for fun, not profit.

@spinach_pizza : I've been thinking about it. That first one was a minor blip on the radar, but that wasn't the reason for a release anyway. I have a few good pieces I could cut & paste in to one I suppose. It's just a lot of work it seems.

@diophantine : I etched the PCB. It really isn't hard (or I'd never have done it). I used Radio Shack copper clad boards and ferric chloride. The Iron-on toner transfer method is very easy and works pretty good. The front panel is always the hard part. That was the first legible silkscreen panel I've ever done. Most of the others were abject failures.

Thanks for all the kind comments. I really surprised myself with the "Fireflies" video. That was fun and made me smile.
Top
Post Reply

Return to “5U Format Modules”