Patent ID: 7432435
Filing Date: 2008-10-07
Classification: G10H

Abstract:
1. A tone synthesis apparatus comprising: a storage section that stores therein a plurality of waveforms for sustain tones in association with dynamics values; an acquisition section that, when a sustain tone is to be generated, acquires, in accordance with passage of time, a dynamics value for controlling a volume of the sustain tone to be generated; a waveform selection section that selects a waveform corresponding to the dynamics value, acquired by said acquisition section, from among the waveforms stored in said storage section; a tone signal synthesis section that synthesizes a tone signal using the waveform selected from said storage section in correspondence with the acquired dynamics value, said tone signal synthesis section performing crossfade synthesis between the waveforms successively selected from said storage section; and a determination section that determines a variation amount over time of the acquired dynamics value and variably sets, in accordance with the variation amount, a waveform switching time over which the crossfade synthesis is to be performed.