Patent ID: 7544882

Claim:
A waveform generating apparatus comprising: virtual logical oscillator means including a master oscillator and at least one slave oscillator, provided for each sound production channel generating a musical tone waveform; a plurality of physical oscillator means for actually generating a waveform and which is associated with the logical oscillators; memory means for storing a correspondence relationship between the logical oscillator means and the physical oscillator means; and dynamic assignment means for dynamically securing or releasing the physical oscillator means assigned to the logical oscillator means of the sound production channel generating the musical tone, according to a process for generating the musical tone waveform, with reference to the correspondence relationship stored in the memory means; wherein the dynamic assignment means selects any one of a “physical oscillator means that is not in use”, a “physical oscillator means being used as a slave oscillator”, and a “physical oscillator means being used as a master oscillator” according to note-ON, an order of priority being the “physical oscillator means that is not in use”, the “physical oscillator means being used as a slave oscillator”, and the “physical oscillator means being used as a master oscillator”, and assigns the selected physical oscillator means to the master oscillator of the logical oscillator means.