Aleatoric Sequencer - Dave Noyze

Aleatoric systems usually depend on a dice or other random event generator for the determination of structure or the choice of various aspects of the musical composition. The Aleatoric Distribution Sequencer is a controlled randomisation event sequencer. Its core engine is a 16 step sequencer with many variable parameters.


The Aleatoric Sequencer allows for the production of controlled randomised patterns of events. The sequencer is arranged in a standard format allowing for multi track operation, with each track being functionally equivalent. There is a separate master section for overall control of the sequencer. The sequencer can be conceptually viewed as an extension of a traditional analogue sequencer.

Each sequencer track has a mute control for muting the output of the track and MIDI port, MIDI channel and MIDI program number can be assigned. The sequencer track is in three slider bank sections for MIDI note, MIDI velocity and the MIDI note duration. The functionality of these three sections are equivelent. There is pop up menu for the choice of sequencer step direction allowing for Up, Down or Up and Down. Following this is a choice of clock division and minimum and maximum step numbers. A toggle switch allows for the each step to be randomised.

The sixteen step slider bank allows for the setting and adjustment of parameter values. The steps can be set to miniumum or maximum value, randomised or manually adjusted. The randomise function allows for a centre and range to be set.

The master section allows for overall sequencer control. Start/stop is performed by pressing the space bar. The setting of tempo in BPM and the master clock division is entered numerically. There is global randomisation control which will activate all the randomisation function settings on each track. This global randomisation can be performed on notes, velocities and durations separately or a complete randomisation of all notes, velocities and durations.