15
Chance Sequencer
Overview
Inspired by the random source on the Buchla Music Easel, the Chance Sequencer on the
Voltage Lab 2 is a digitally controlled random source generating both gate and CV signals. The
random generator functions similar to an analog, shift register wit up to 32 stages. When the
clock signal triggers an update and the next register value is loaded, there is a chance it will
evolve. Think of it like a step sequencer. The random generator cycles through the steps of the
sequence and each time the sequencer jumps to the next step, there is a chance the value
stored in that step will be replaced with a new value. The result is a random source that
feels both random and evolutionary, with an ever evolving pattern cycle.
The [STEPS KNOB] sets the number of steps in the sequence 1-32, you can see this number
displayed across the oscillator LEDs.
The [DENSITY KNOB] controls the potential that the Chance Sequencer will trigger.
Turning to the right increases the chance the sequencer will trigger. Chance increases for both
triggering on the beat and also subdivisions.
The [CHANCE KNOB] controls two variables.
1. The % chance the sequencer step will update the saved value. Turning to the right creates a
greater chance of change.
2. The range of change between the saved value and the new value. Turning to the right
creates a greater chance of larger jumps in value between the saved value and the new value.
The [QUANTIZE CV BUTTON] will determine if the [CV JACK] will send out quantized 1v/oct notes
or not. [EDIT BUTTON] + [QUANTIZE CV BUTTON] determines whether or not the Control
Sequencer is in sync with the clock.
Chance Input Jacks:
[CLOCK JACK] External clock input Jack.
[CHANCE JACK] Chance CV input, attenuated with [CHANCE(CV KNOB].
Chance Output Jacks:
[CV JACK] Chance sequencer CV output.
[GATE JACK] Chance sequencer gate output.
3 Voltage Lab 2 Voice Modules
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