Tone generation apparatus

摘要

In response to detection of a note-on instruction, a CPU (10) assigns a tone generating unit comprising two tone generating channels and sets tone color control data of the assigned tone generating unit into tone generator registers (23). The tone color control data includes a parameter common to the two channels. Once the CPU gives a tone generation start instruction to a tone generator (20), the tone generator accumulates a frequency number common to the two channels to thereby generate a progressive phase common to the two channels. Waveform readout section (112) reads out left-channel and right-channel waveform data from a waveform memory (21) on the basis of the phase and waveform selecting information of the left and right channels. Tone characteristics of the read-out left- and right-channel waveform data are controlled by a characteristic control section on the basis of a characteristic control parameter common to the two channels.