Patent ID: 7816599
Filing Date: 2010-10-19
Classification: G10H

Abstract:
1. A tone synthesis apparatus comprising: a storage section that stores therein at least head-portion waveform data corresponding to a rise portion of a tone, tail-portion waveform data corresponding to a fall portion of a tone and joint-portion waveform data corresponding to a joint portion connecting between two successive notes; a mode setting section that sets either one of a tone generation priority mode and a quality priority mode, wherein the tone generation priority mode and the quality priority mode are modes to be selectively used in order to synthesize a connecting tone for connecting between two successive notes, the tone generation priority mode being intended to reduce a delay in tone generation timing of a succeeding one of the two successive notes as compared to the quality priority mode; an acquisition section that acquires performance information; a data selection section that, when a connecting tone for connecting between two successive notes is to be generated in accordance with the acquired performance information, selects the joint-portion waveform data from said storage section if a mode currently set by said mode setting section is the quality priority mode, but selects the head-portion waveform data and the tail-portion waveform data from said storage section if the currently-set mode is the tone generation priority mode; a data processing section that, when the currently-set mode is the tone generation priority mode, processes at least one of a pitch and amplitude of at least one of the head-portion waveform data and tail-portion waveform data selected by said data selection section, on the basis of the acquired performance information, so as to provide a smoothly-varying connecting tone; and a tone synthesis section that synthesizes a tone on the basis of the waveform data read out from said storage section in response to selection by said data selection section and in accordance with processing by said data processing section, wherein, when the currently-set mode is the tone generation priority mode, said tone synthesis section separately synthesizes, in accordance with the processing by said data processing section, a tone of a fall portion of a temporally preceding one of two successive notes on the basis of the tail-portion waveform data read out from said storage section and a tone of a rise portion of a temporally succeeding one of the two successive notes on the basis of the head-portion waveform data read out from said storage section, so that a connecting tone is realized by a combination of the synthesized tone of the fall portion of the preceding note and the synthesized tone of the rise portion of the succeeding note.