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Step

Purpose

Section titled “Purpose”

Step is a classic step sequencer with multiple lanes. Driven by the timeline, it plays a grid of steps across several lanes and resolves them into note lanes for a drum kit or melodic instrument, plus one control lane you can use for modulation. Lanes can be addressed as drum notes, MIDI notes, or scale degrees.

TouchDesigner Use

Section titled “TouchDesigner Use”

Wire a timeline clock into Input 0 and, for scale-degree mode, a scale into Input 1. Set Notemode, the number of lanes and steps, and edit the grid through the Pattern and Lanenotes fields. Route notes into a drum or note-lane instrument and control into anything you want the sequence to modulate.

Inputs And Outputs

Section titled “Inputs And Outputs”
  • Input 0: timeline timeline clock. Required.
  • Input 1: scale scale context. Optional, used in scale-degree mode.
  • Output 0: notes emits the grid as note lanes, one channel per note.
  • Output 1: control emits a per-step modulation lane.

Main Controls

Section titled “Main Controls”
  • Notemode: how lanes are addressed. drum_notes, midi_notes, or scale_degrees.
  • Stepcount and Lanecount: grid width and number of lanes.
  • Stepoffset: shifts the playback position in the grid.
  • Rootnote: base note for melodic modes.
  • Gate, Velocity, Probability: note length, level, and per-step trigger chance.
  • Controlmode: what the control lane carries. step, phase, active, or velocity.
  • Lanenotes: the note assigned to each lane, for example 36 38 42 46 39.
  • Pattern: the step grid itself, written as lane rows of hits and rests.
  • Seed: repeatable random elements such as probability.

Notes

Section titled “Notes”
  • Use drum_notes with Lanenotes set to kit notes to drive a drum instrument.
  • Probability below full turns a fixed grid into a varying one without editing the pattern.
  • The control lane lets one sequence both trigger notes and modulate another parameter.

Parameters

Section titled “Parameters”

This operator does not expose user parameters in the extracted schema.

Catalog metadata

Roles

  • transform
  • mixer
  • source
  • generator
  • sequencer
  • rhythm
  • control

Tags

  • step
  • sequence
  • grid
  • note_lanes
  • drums
  • scale
  • control

Search groups

  • timeline
  • control
  • scale
  • midi
  • music
  • rhythm
  • drums
  • composer