system selector of high note bas and fundamental note fifth note alternate for musical instruments, electric

摘要

A note selection system for a keyboard type electrical musical instrument which supplies to output leads the note signals corresponding to the highest and lowest notes of a group of notes played, or, in the alternative, the note signals corresponding to the musical root and fifth notes of certain three-note chords whenever only the three notes comprising each of these particular chords are played. The disclosed embodiment responds to playing any of four three-note chords in each of the 12 musical keys to supply the corresponding root and fifth note signals of these chords; if any other three-note chords, or other than three notes are played, the system supplies the highest and lowest note signals of the group of notes played.