MATRIXSYNTH: PT Audio


Showing posts with label PT Audio. Show all posts
Showing posts with label PT Audio. Show all posts

Wednesday, August 02, 2017

PT-Audio Dual Digital Oscillator

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"PT-Audio Dual Digital Oscillator 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:

FM
Fractal Saw
Additive asymmetrical wrapper
Multiplying symmetrical wrapper
Bitkiller (subtle)
Phase Slave
And Xor Slaves
Squeeze/sync

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 behavior."

Saturday, December 12, 2015

PT Audio DDO Test


Published on Dec 11, 2015 Randy Piscione

"Almost 7 minutes of fooling with a PT Audio Dual Digital VCO. I bought the PCB already built and then built a panel and wired it up. It's different for sure, capable of some cool sounds, from mellow and smooth to, uh, dare I say "gnarly!" Next I'll probably run it through the 'scope so I can see what's actually going on."

Thursday, October 23, 2014

PT audio Dual Digital Oscillator demo


Published on Oct 23, 2014 wind0spirit's channel

"Video showcasing my DDO, this is the first of several that I built but I recently updated some things about it as I am sadly selling it. For one there are now pink LEDs, another is that I changed the link switch to a DPDT which also connects the modulation inputs. PMOD (pitch mod) connections are normaled to the opposite oscillator for cross modulation. I also have each osc going to one channel of the J3RK dual 291 BP Filter Buchla clone. You can see the PEG acting as an envelope generator driving each channel of the uVCA. The left PEG channel modulates the output of the 291's crossfader, the right PEG channel modulates the sum of each unfiltered oscillator. Halfway through my trust volca beat comes through but it is unfortunately a bit distorted. Anyways enjoy!"

Tuesday, December 10, 2013

Eurorack drums: PT Audio Dual Digital Oscillator


Published on Dec 10, 2013 Andreas Bygdell·30 videos

"This is a chiptuneish beat made using a PT Audio DDO as sole sound source. Control via A-190-3 + Silent Way, envelopes from Maths. On the fly one handed tweaking, other hand holding very shaky iPhone."

Friday, July 05, 2013

PT-Audio Dual Digital Oscillator demo


Published on Jul 5, 2013 Stephen Drake·38 videos

"*WARNING* - most of this video features audio direct from this digital oscillator, some of which has LOTS of high frequency content - set your monitor/headphone levels safely!

This is a demo of some of the features and abilities of the PT-Audio Dual Digital Oscillator. This is a deep module - even at 22 minutes I only scratch the surface of what it can do. In actual usage, attach some envelope generators or slopes to the various cv inputs, and magic starts to happen!

This isn't a commercially available device, currently. If you have synth DIY skillz, you can build one now, or possibly find someone who will build one for you. For more on this device, see http://www.muffwiggler.com/forum/viewtopic.php?t=70449 or possibly http://synthcube.com/

The sounds at the beginning of the video are the DDO being driven by the Klee sequencer, and going through an Eventide Space, nothing else involved. Once I start the mode demos, the Klee and the Space are taken out of the signal, all you're hearing is the DDO directly. Only other modules used are a MOTM 390 LFO and a CVP to raise the lfo signal so it's all positive voltages.

Sorry about the excessive length of this video - I was having too much fun playing with the various modes - I thought I could get it all in under 10 minutes, but it didn't work out that way."

Tuesday, June 25, 2013

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.
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