Chord's frequency modifying system for e.g. electrical piano, has control device controlling modification of frequency of chord of instrument, where frequency modification produces flat or sharp tone and changes tuning method of instrument

摘要

The system has a control device e.g. programmable button, controlling modification of frequency of a chord of an electronic or electrical music instrument e.g. electrical piano, where the frequency modification produces a flat or sharp real tone and changes a tuning method of the instrument. A CPU is configured for passing instructions generated in the device towards an electronic frequency generator, and a set of buttons (A-F) is used for changing respective flat tone keys.