PT Audio Dual Digital Oscillator

flickr by sduck409 (click for more)

"Here's my build of the Dual Digital Oscillator, blacked out version. PCB is from Lazerkind/PT-Audio."

And some details from Muff's:

"It is based on DSS (Direct digital synthesis) and is running on a ATMega 328p chip.

Both oscillators share a set of 4 * 8 Wavetables that can be interpolated.
It has 8 modes of operation:
- 1. Phase mod 1->2, 2->1
- 2. Saw mod
- 3. SampleWrap
- 4. BitCrush
- 5. PhaseCrush
- 6. Bitkill
- 7. And/Or
- 8. Sync 1->2
(still not 100% set in stone as so many variations sound cool)

pitch tracking is 5 octaves, 1V/oct. And can be offset +5 octaves with the coarse/fine controls. Additionally the pitch can be modified by the pitch mod inputs +/- 5 octaves.

Osc1 can be switched down one octave, and osc2 switched down 8 osctaves.

Osc2 can either follow osc1 or run free, by flipping the link switch.

All CV inputs are 0-5V but the pitch mod that is -5/+5. All inputs are protected against voltages outside that range, but inputting a non expected voltage may result in unexpected behaviour"


And some audio demos:



I believe this is the first PT Audio post.

Ian Fritz Chaotica

flickr By sduck409

CVP & Buffered Multiple

flickr By sduck409
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"This is a handy utility module that I've needed for a while. Combines 2 CVP (Control Voltage Processor) modules and a buffered multiple. Thanks to negativespace for the cvp pcbs."

Thomas Henry Mega Percussion Synthesizer

flickr By sduck409
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"This is my version of the Thomas Henry - Electro-Music.com Mega Percussion Synthesizer."

Korgasmatron III Dual Filter

flickr By sduck409

"Here's another version of the Korgasmatron III dual filter, design and pcbs by David Dixon. Note the modcan knobs."

MOTM e580 DIY

flickr By sduck409

"This is my version of the Synthesis Technology e580 Resampling Mini-Delay. In MOTM format."

Synthesis Technology e560

flickr By sduck409
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Ian Fritz Teezer VCO

flickr By sduck409
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Random Looping Sequencer

flickr By sduck409

"This is my version of the Random Looping Sequencer, a design by Tom Whitwell."

Dude plays Sidrassi & CocoQuantus

video upload by sduck409 on Jul 16, 2012

"On a recent visit to Dude's (Liam Cloyd) domicile, I filmed this brief performance/improv. Sound production is with a Ciat-Lombarde Sidrassi and a Cocoquantus, with some additional enhancements from a 4ms Bend Matrix, Moogerfooger LPF, and a Strymon Blue Sky and El Capistan. Sorry, only crappy mono camera mike audio. Copyright ®2012 Stephen Drake and Liam Cloyd."

I haven't had a post featuring the 4ms Bend Matrix in ages. I'm showing the last one on Aug 3, 2010. Click here and scroll for some posts.

Balpa Faztidi

YouTube Published on Jul 2, 2012 by sduck409

"In which the monkeys in my synthesizer express their outrage at the unfairness of their captivity

Basically the same patch as my last video. Still just 5 modules used. The Dual Wogglebug is doing a lot - modulating things left and right and putting out the wobbly clock that's driving the Klee Sequencer, which driving the pitches of the cross-modulated Buchla 258 Dual VCO clone and the frequency of the Korgasmatron III VCF which is in bandpass mode. The Wogglebug is also flipping the panning of the Yusynth Mixer/Panner around. And it's all going through a Eventide Space with a really basic Hall setting. Recorded straight into the computer, no audio editing afterwards. Copyright 2012 Stephen Drake."

Balpa Faz

YouTube Published on Jun 27, 2012 by sduck409

"Only the camera mike on this one, sorry - I may redo it later when I have more time. Just 4 modules used for this, although they're all pretty deep modules. Dual wogglebug is producing a crazy variable clock, which drives the klee sequencer. The A and B out of the Klee are driving a cross modulated Buchla 258 clone. The 258 top oscillator output is going into the Korgasmatron III, only using the B side, in bandpass mode, which is being frequency modulated by the A+B output of the Klee. I also have an output of the wogglebug controlling the stereo panning, but since this is a mono recording, you'll have to imagine that part. Featuring a vocal cameo by Fishpants the cat at 0:44. Live audio and video recording on 2012-06-27, copyright Stephen Drake."

Korgasmatron III Dual VCF

flickr By sduck409

"This is my build of the Korgasmatron III Dual VCF, designed by David Dixon who kindly provided my with hand-etched PCBs. It is an emulation of the Korg MS-20 filter set, with some added features."

CGS Quad Gates

flickr By sduck409

"This is my version of the Catgirl Synth (CGS) Quad Logic Gates. In this one I've used an AND logic chip."

Korgasmatron II demo

YouTube Published on May 15, 2012 by sduck409

"This is a basic demo of some of the things my DIY version of the Korgasmatron II VCF will do. Design of this circuit is by David Dixon, who kindly provided me with the pcb's to make this. What you're hearing is a (boring) sequence created by a Klee sequencer, driving 3 Synthesis Technology MOTM 300 VCO's into a MOTM 830 mixer into a MOTM 190 VCA. Recorded in real time, no effects, audio straight to computer. I don't explain all the knobs and normalizations and such - sorry."

David Dixon Korgasmatron

flickr By sduck409

"This is my version of the Korgasmatron Dual VCF. This is a Korg MS20 style filter based on the 2164 chip, designed by David Dixon who very generously supplied me with hand etched pcbs. This is very similar to the Intellijel Corgasmatron filter, but without the cross fader and with several other differences."

Craig Lee 8 Channel Quantizer profile

flickr By sduck409
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"This is my version of the 8 Channel Quantizer designed by Craig Lee"

full modular 2011

flickr By sduck409

All DIY modular featuring MOTM (Synth Tech), Blacet, Jurgen Haible, Ian Fritz, Scott Stites Klee sequencer, Ryk, 4ms, Flight of Harmony, Yusynth, Toppobrillo and Tellun.

SCMRCD light test

YouTube Uploaded by sduck409 on Nov 21, 2011

"Finally got a decent set of LEDs in this module, the 4ms Shuffling Clock Multiplier/Rotating Clock Divider- this is just a quickie iPhone video to show them off - full video later."

Always love a blinky light show.

Update:

SCMRCD demo

YouTube Uploaded by sduck409 on Nov 21, 2011

"A brief demo of some of the capabilities of my SCMRCD module - a combination of the Shuffling Clock Multiplier, the Rotating Clock Divider and their associated breakout boards from 4ms Pedals. I don't really scratch the surface of what this thing can do, just using the built in clock generator and the knobs and switches - no outboard cv's or anything. Still you can get an idea of the potential, and enjoy a light show at the same time."

4ms Pedals SCMRCD

flickr By sduck409
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"Here is a combined version of the the Shuffling Clock Multiplier and the Rotating Clock Divider and associated breakouts by 4msPedals."