Optode by and per se and published on 2014-07-31T23:28:28Z A quasi-ambient IDMish track where the vactrols do all the work. It started as an experiment in generative melodies, and ended up as a sort of mellower version of 00s Autechre. The plucky sequences were generated by a clock going into PTG, with the two halves' Step Response and Damp modulated by 4 LFOs from the A143-4, so the vactrol response of each half is always varying. The two outputs go into the two channels of the A156, creating ever-changing melodic patterns. These then drive Rubicon and Dixie II, whose modulated pulse waves go into the two channels of Optomix, which is struck by the two trigger outs of the A156. The trigger ins on the A156 are driven by Klasmata, and since the Fill CV input is modulated by a slow LFO, the A156 goes from triggering only infrequently to rapid patterns, thus creating a series of "waves" or "movements" that give the piece some structure. The Optomix channel outputs go into two outboard channels panned hardish left and right. It's mix out goes into Erbe Verb, set to a large space with moderate Absorb, modulation in shimmer mode, and CV out patched to Tilt CV in to brighten the reverb tails. A division of the main clock drives the Decay to near feedback levels every other bar. A combination of Pamela's Workout, A160/161/167 and uStep generate all the clocks, gates and triggers. This includes a basic, low kick drum/pulse, which is a self-oscillating uVCF driven by a PEG envelope. There's also a glitchy percussion sound, which is a GenXpander DIFF output going into a Pittsburgh Filter and VCA, with a Function envelope driving the VCA, cutoff, and Generator 2 Exp In, and an attentuated A160 gate out affecting Generator 1 for some rhythmic variation. This goes into a Vox DelayLab, and at various stages I tweak the Function fall time, Filter Q and H-L balance, and Generator parameters to change the feel of this part over time.