Sequencer controlled function generators (Roland CR-8000, Korg KPR-77)





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Published on Feb 15, 2013

I'm using the Dave Smith Instruments Evolver to control the pitch of two function generators (Wavetek Models 145 and 188) that are cross-patched in a weird sync/FM feedback loop.

The Korg KPR-77's audio output is connected to the Evolver's left input to trigger the sequencer (which is why it's sort of wonky). The Evolver's raw oscillator tone from the left output is connected to the Wavetek 145's trigger input. The result is similar to oscillator sync. As I'm using it here, the trigger input allows the frequency of the function generator to be controlled from an external source without using voltage control. The Wavetek 145's output is connected to the Evolver's right input, where it's mixed with the Evolver's oscillators (only to add a little bit of bass) and sent through the VCF and VCA. The right output is sent to the mixer. Basically the function generators are used as auxiliary oscillators that can generate complex timbres.

I'm overdriving the mixer input to distort the CR-8000. The Tapco 4400 was used for reverb (and also distortion since channel 1 is apparently no longer working properly). Background drones are Yamaha FX900 feedback. Recorded 2013.

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