Musical sound generation method, musical sound generation device, and recording medium

A musical sound generation method comprising:

• a control device assigning, when a performance operator among a plurality of performance operators has been operated for a part that has been set to sound a predetermined number of simulated voices of an analog synthesizer, at least one sounding parameter being a pitch of one or pitches of two or more voices, which form a timbre of a simulated voice of the analog synthesizer corresponding to a note number of the operated performance operator and are selected from a plurality of voices capable of being sounded, to a sound generation circuit;
• the control device assigning, to the sound generation circuit, an information set selected from a plurality of information sets which are prepared for the predetermined number of simulated voices and each include a variation value that applies a variation to the sounding parameter of the one or two or more voices;
• and
• the sound generation circuit performing a sounding process of the one or two or more voices using the sounding parameter and the information set,
• wherein unused information sets among the plurality of information sets are registered in an unused list,
• each of the information sets in the unused list includes identification information of a performance operator that has triggered assignment to the sound generation circuit in the past, and
• when an information set is selected from the unused list in response to operation of a certain performance operator among the plurality of performance operators, an information set including identification information of the certain performance operator is preferentially selected.

A musical sound generation device comprising:

• a first predetermined number of real voices provided for a plurality of parts;
• a number of virtual voices, whose upper limit is a second predetermined number, provided for each of the parts;
• a real voice assigner configured to assign at least one real voice among the first predetermined number of real voices for operation of a performance operator for a part that has been set to sound simulated voices of an analog synthesizer;
• a virtual voice assigner configured to assign one of the virtual voices of the part;
• and
• a sound generation circuit configured to generate a musical sound on the basis of a sounding parameter being a pitch of the assigned real voice corresponding to a note number of the performance operator and a pitch variation value of the assigned virtual voice,
• wherein the real voices are shared by the plurality of parts, and
• wherein, when the one or two or more voices are generated using a plurality of oscillators included in the sound generation circuit, the information set includes pitch variation values respectively corresponding to the oscillators.