As the musical tone signal is generated the sound generator control unit,

摘要

PROBLEM TO BE SOLVED: To release a sound channel, belonging to any of a plurality of parts so that the resource of a sound source for compositing a musical tone signal, consisting of the plurality of the parts can be effectively utilized when the sound volume of any of the parts is turned down in the sound source and to restart the sound production when the sound volume of the part increases again.;SOLUTION: When a note-on event arises in an electronic musical instrument, the sound production channel is allocated to the sound source according to the event and the content of the note-on event is recorded as note-on information in a note-on buffer. When the part sound volume of a certain part is changed to a value below the threshold TH from the value above the threshold TH, the total sound production channel related to the part is released (SP92). When the part sound volume is thereafter changed again to the threshold TH or higher, the sound production channel is allocated to the sound source, based on the note-on information and the sound production, is restarted (SP82).;COPYRIGHT: (C)2006,JPO&NCIPI