Stochastic Trigger Sequencer

A 4-channel 8-step trigger sequencer that allows you to set a probability value for each step of the sequence per channel. The values of the probability knobs can be randomized with the R button, or small deviations can be generated (the range is controlled by the small knob) when the dev button is pressed.

Perfect for making subtly changing rhythms that are never quite the same, or adding some randomness and controlled chaos to any patch.

Documentation

• Probability Knobs - The row of knobs on each channel define the probability of a trigger being sent out on that channel for each of 8 individual steps. When turned all the way counter clockwise (0%) no trigger will be sent out on that step, when turned all the way clockwise (100%) a trigger will be sent every time on that step, and when at the center position (50%) there will be an equal chance of a trigger being sent or not each time the sequencer goes through that step. The current step is displayed on th counter at the top, and when a trigger is sent out on each step, an LED on that step ligts up to refelct this.

• Sequence Length - You can choose how many steps the sequence has, up to 8, using the slider on the top right.

• Play Controls - This section allows you to change the play mode of the sequencer between forward, pendulum, reverse, freeze, and random play. You can also start and stop the sequencer from here or, when the selected play mode is freeze, move a step forward, backwards or to a random position. There is also a button to reset the sequence, below its CV input, just to the left of the play controls.

• Clock - The rate knob controls the rate of the internal clock, and the small gate knob determines the pulsewidth of the clock signal, which affects the gate length of the output triggers. There is a button to select an external clock, located under the respective input on the left side. There is also an ouput jack that allows you to send the internal clock to another module.

• Randomize - Above the rate control, just to the right of the play controls, there is a small button labelled R. This button allows you to randomize the values for all the probability knobs, to easily create new patterns.

• Deviate - The Dev button also randomizes the probability knobs, but in this case the range of randomization is restricted to the values set by the small knob above it. This is useful for producing small variations from an ongoing pattern.