Patent ID: 6316711
Filing Date: 2001-11-13
Classification: G10H

Abstract:
A musical sound signal generation apparatus comprising:a plurality of musical sound signal generation means for generating musical sound signals;a generation mode storage means for storing information on whether said musical sound signal generation means is in the sounding mode or the silent mode, and the order in which each of the musical sound signal generation means has changed into the sounding mode;an assigning means for, when a key is operated, referring to storage contents of said generation mode storage means to select two of said musical sound signal generation means in the silent mode, directing the selected two musical sound signal generation means to respectively generate left and right musical sound signals for producing a predetermined sound in stereo sounding corresponding to the key in the selected two musical sound signal generation means, and updating the storage contents of the generation mode storage means; andoutput means for synthesizing the left and right musical sound signals generated in said plurality of musical sound signal generation means and respectively outputting the synthesized left and right musical sound signals;wherein said assigning means comprises:a first generation mode determination means for, when the key is operated, referring to the storage content of said generation mode storage means to determine whether there are musical sound signal generation means in the silent mode;a second generation mode determination means for, in case of which it is determined by said first generation mode determination means that there are no musical sound signal generation means in the silent mode, referring to the storage contents of said generation mode storage means, and, from the musical sound signal generation means excluding a predetermined number of those which are the newest in order of sound production, determining whether there are at least two pairs of the musical sound signal generation means generating the left and right musical sounds in stereo sounding;a first signal generation ensuring means for, in case of which it is determined by said second generation mode determination means that there are two or more pairs of said musical sound signal generation means, selecting two pairs of the musical sound signal generation means, changing one of each pair of the musical sound signal generation means into the silent mode, and updating the storage contents of said generation mode storage means; andoutput control means for outputting musical sound signals generated in the other two musical sound signal generation means, not changed into the silent mode by said first signal generation securing means, as the left and right musical sound signals from each of the two musical sound signal generation means.