Controller for use with a music sequencer in generating musical chords

摘要

The controller scans a plurality of chord switches which select a particular type of chord. If a previously operated selection switch is still closed, the previously generated MIDI chord message continues. If a selection switch is newly operated, then the MIDI signals from an associated musical instrument on a selected channel are scanned to determine the presence of a particular note meeting pre-selected criteria. When such a note is recognized, a three-note MIDI chord message using the particular note as the root note in the chord is produced and transmitted to the music sequencer, which produces a musical pattern in the particular chord as an accompaniment to the musical instrument.