MATRIXSYNTH

Sequential Circuits Prophet 600

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via this auction - learn how to sell on eBay here

Roland TR-505 swing to x0xb0x(MarOS) for Revers

Published on Sep 22, 2013 yoshitb303r·38 videos

"単体では全くSwingしないTR-505もxOxbOx(MarOS)でSwingさせる事が出来ます。Revers Play等の機能も含めて参考動画をお届けします。"

Reset - "They Found Me"

Published on Sep 22, 2013 davidryle·126 videos

"Some sketchy modular synth clock works and a cryptic radio voice. The radio is randomly tuned with a Q117 S&H module and a Q125 Signal Processor module before being sent to a Mega Ohm Audio LFO2 controlled stage of an STG Signal Amplifier module. SImple enough?

The piece is in 5/4 and various multiplications of the clock. The beat one of the 5/4 measure is resetting most of the faster clock multiples and forcing the half beats and such. It is a nice stuttering effect. The Modcan 73B delay is using a staggered sync on its' channels for a delay which almost falls apart and regroups again on each bar. Notice the delay never changes the pitch as most delay's would. Nice. Some filter modulation of the 73B is happening using two LFO's. The sequence into the 73B is from the Q960 which is the main 5/4 clock sequence.

The title is a combination of the reset function happening musically and the only words I could identify in the broken radio audio. Sort of a hide & seek message or something.

Fun stuff for an evening patchwork."

DinQuarter | Grid Gated Proppa | Eastern Transient

Published on Sep 22, 2013 kuxaan sum·162 videos

Grid Gated Proppa

Eastern Transient

Jones O'Tool on eBay

Waldorf Pulse 2 Editor Update to v 1.02

via Qwave in the comments of this post.

"New version (1.02) available at http://till-kopper.de/pulse2.html
Moved the labels upwards a bit."

The editor was made using TB MIDI Stuff

iTunes: TB MIDI Stuff - TBStuff
Walldorf Pulses on eBay

Cytochrome P450

Cytochrome P450 from fiocz on Vimeo.

"A Serge Creature + Seq. A patch with Red Panda Particle granular delay ."

via Andrea Fiocca on The MATRIXSYNTH Lounge

Better Living Through Electricity

Published on Sep 21, 2013 experimentalsynth·86 videos

"Connect something to something else and wave your hand. This is what happens (sometimes). See more hand-waving and such at www.experimentalsynth.com"

DSI Prophet 12 controlled by Moog Theremin.

DCOs vs VCOs

A recent poll went up on The MATRIXSYNTH Lounge asking whether DCOs are analog or digital. DCO stands for Digitally Controlled Oscillator and in many cases they are actually analog. They are just digitally controlled. I remember the debate coming up frequently on the Analogue Heaven mailing list so I did a quick search and found the following from the late Jürgen Haible. He was an extremely respected synth DIY designer who's work is frequently featured on the site to this day. I thought I'd share it here on the site as well. Note the bits preceded with > are from someone else. JH is the rest.

">
>>There are different types of DCOs.
>>An analog oscillator, whose frequency is synced to a digital clock. Thus
>>the tuning is perfectly, but the waveform is smooth.
>>Example: Oberheim Matrix 1000, Matrix 6/6R
>
>My M-6 can really get out of tune sometimes (not often though). Perhaps it
>only syncs when you use the "tune" function?

I always thought it's the (resonating) *filter* that is tuned on request.
The DCOs are locked to clocks as said in the original mail.

>>A digital circuit, which aproximates analog waveforms as step functions in
>>hardware, the bit resolution gets worse the older the gear is.
>>Example: Korg Poly-800, Bit-99
>
>The DCO's in these should rather have been labled DO's by the manufacturers
>then, as the sound is digitally generated.

IMO, there are quite a lot of nuances of VCO-DCO. Let me try and make the whole chain from "analogue" to "digital" (Though I wouldn't say strictly from "good" to "bad" ;->)

(1) free running analogue oscillator, controlled by analogue voltage divider keyboard. (Minimoog, ...)

(2) free running analogue oscillator, controlled by digital via a D/A converter without correction, and analogue modulation (Oberheim n-voice (?) )

(3) free running analogue oscillator, controlled by digital via a D/A converter, with autotune, scale correction and stuff, but still analogue modulation (Sequencial Circuits Prophet5 rev. 3)

(4) free running analogue oscillator, controlled by digital via a D/A converter, with autotune, scale correction and digital LFO / Sample&Hold / Glide modulation, but with analogue ADSR->VCO modulation (Oberheim OB-8).

(5) free running analogue oscillator, controlled by digital via a D/A converter, with autotune, scale correction, and all modulations including ADSR via DAC (Sequential Prophet 600).

(6) free running analogue oscillator, controlled by digital via a D/A converter, with autotune, scale correction, and all modulations including ADSR via DAC, plus automatic autotune in the background from time to time (Oberheim Matrix12 (?)).

(7) Simple Ramp-Oscillator that is synced by a counter every cycle, but with different clock/divider tree for both DCO's in a voice (Oberheim Matrix 6, EDP Wasp)

(8) Simple Ramp-Oscillator, that is synced by a counter every cycle, but with one single clock/divider tree for both DCO's in a voice (Oberheim Matrix 1000)

(9) Staircase Waveform stuff (as described in different recent mails)

(10) Wavetable stuff (also as described in recent mails)

These are the different types I know of. Maybe there are still others in between. Speaking in the word's original sense, (2) - (6) would be something like "DCVCOs" ("digital controlled VCOs") in the sense of a digital word forms an analogue voltage that controls an oscillator. (7) and (8) would be real "DCOs", cause they are still oscillators, only under the iron grip of digital clock, which makes them sound thin and lifeless. (9) and (10) shouldn't be called "controlled oscillators" anymore, perhaps just call them "DOs" ("digital oscillators") or even closer to the point, "DDs" (digital dividers) or "DS's" (digital scanners). Well, but that would go too far then.

Oh, I forgot another interesting variation:

Analogue oscillators with digital dividers / waveforms:

(11) analogue VCO with dividers (some ARP-synths - thank You Joachim, for the schematics! - and of course the Suboscillators in various VCO- based synths)

(12) 12 analogue VCOs for the 12 top-octave-semitones and digital dividers (Farfisa VIP 245, Korg PS-3x00 series)

JH."