Tone generator assignment in a keyboard electronic musical instrument

摘要

A keyboard operated electronic musical instrument is disclosed wherein the number of tone generators is less than the number of keyswitches in a keyboard array of keyswitches. If all the available tone generators have been assigned to actuated keyswitches, the actuation of an additional keyswitch causes the oldest tone generator to be assigned to the newest keyswitch. The assignment action does not depend upon the release of any keyswitch. A phase addition means is used to remove the oldest tone generator so that release key clicks are not generated.