A.Editing sounds on the GR-20 is extremely easy. While listening to the sound, just use the five front panel knobs ---ATTACK, RELEASE, CHORUS, DELAY/REVERB, and LEVEL--- to adjust the sound to your taste.
Further editing can be performed by pressing the PATCH EDIT button and adjusting the FREQ, RESO, TRANSPOSE, and PLAY FEEL parameters.
(2006/01/20)