SOUND SOURCE WAVEFORM SYNTHESIZER USING ANALYSIS RESULT

摘要

PROBLEM TO BE SOLVED: To provide a sound source waveform synthesizer adopting a waveform analysis method which can analyze the useful frequency components of an original waveform.;SOLUTION: The waveform analysis method is used as a tool for forming a waveform by waveform synthesis. In a step S33, waveform data having a one-frame length are successively segmented from original waveform data WAVE so that one-frame periods overlap each other, and FFT analysis processing is performed on the obtained data to detect the frequencies, amplitudes, and phases of frequency components. A plurality of frequency components each of which has an amplitude (peak amplitude) larger than those of preceding and succeeding frequency components are outputted as locus data DD(i). Then, residual waveform data RW(i) obtained by subtracting a waveform SW(i) synthesized from locus data DD(i) from an analysis object waveform IW(i) are taken as a new analysis object waveform IW(i) to perform FFT analysis again.;COPYRIGHT: (C)2004,JPO