Wednesday, December 12, 2007

The Devils Carrousel

So here is the patch I mentioned last night after getting the Doepfer A-155.

The A-155 has Pre/Post outputs for each sequencer lane. "Pre" is pre-S+H/Glide processing and Post is post-S+H/Glide processing; but if you don't do any S+H/Glide processing, these are essentially a mult. That's how I used it in this case, with the Pre out going to the 1v/Oct in on the Plan B Model 15 and also into one oscillator's CV in on the Livewire Dalek Modulator which was set to a sine wave and put into one of the Freq CV inputs (linear) of the Model 15. The sine wave output of the M15 is then fed into one half of the M13 Dual Timbal Gate set to "Both" with the level all the way up.

The second lane of the A-155 is controlling the other oscillator of the Dalek, set to square wave and fed into the other half of the M13 Dual Timbral Gate, set to "Filter", with the Level all the way down. This gate is being opened by the Plan B Model 10 Poly EG.

The clock for the A-155 is the square wave output of one half of the Livewire Vulcan Modulator. The Difference output of the Vulcan is set for both square waves and it is being used to trigger the M10 which is opening that lower gate on the M13.

From the SUM output (mix) of the M13, the signal is fed into the Livewire FrequenSteiner, which is then modulated slowly by the triangle wave on the other half of the Vulcan as well as the Auxiliary output of the Livewire Dual Cyclotron. This gives an interesting sound because you don't really notice the Cyclotron's effect on the filter frequency when the Vulcan has swept it all the way up, but as it sweeps down, you can hear the Cyclotron's makes that kind of square wave gurgling sound when the filter frequency is in the lower range.

Finally, the volume is controlled by one of the EGs on the Doepfer A-143-2 which is being triggered by the Gate row on the A-155 sequencer. The release time is slow so it's really adding only a slight bit of dynamics to the sound. I'm also controlling the overall volume with one axis of my joystick controller inverted through the Doepfer A-175 Dual Inverter.

The final touch is the Moog delay (MF-104) with the Frostwave Resonator in the feedback loop to give it a bit more band-limited tape-delay like sound.


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