Geppeg by and per se and published on 2014/07/28 05:24:18 +0000 A sometimes lively but otherwise ambient track, mostly generative, exploring some spatial tricks and textures. The melody is generated by the two self-cycling channels of PEG modulating each other's Div and Skew, creating subtly chaotic modulations. One channel's envelope goes out through an attenuator to an A156 quantiser (unusually for me, set to a major scale), and varying the attentuation at the beginning and end changes the range of the melodic line. The quantised CV then drives a Rubicon saw, which goes into a Pittsburgh Filter, the cutoff and resonance of which are modulated by the two halves of PEG. The LP output from the Filter then goes into Optomix, which is struck by the trigger out from the A156, creating fast plucky runs of notes. This output the goes into an output mixer, where reverb and some DelayLab echoes are added. The H-L output of the Filter, set just into the HP region for most of the track, then goes through a VCA into Erbe-Verb. A random-ish gate triggers a Z4000 envelope to open the VCA, letting bursts of higher-frequency melody into the Erbe-Verb. The Erbe-Verb's CV out is patched into Tilt in, making the peaks of the reverb even brighter, and a LFO modulates the Decay to the brink of oscillation and back again. Internal modulation depth is fully CW, giving bright shimmering tails. After about 5:20 I fade out the plucked melody and tone down the range of voltage going in to the quantiser, then crank up the Erbe-Verb Decay and slowly turn the Filter's H-L output down into LP mode. The melodic parts thus dissolves into a dark swirling drone, until there's nothing left but the Erbe-Verb's self-oscillation.