| 摘要 |
PURPOSE:To change a tone color continuously naturally before/after entering a repetition period of waveform read and to provide a natural tone color change by using a parameter where an amplitude and a frequency are revised and synthesizing respective band signals. CONSTITUTION:A higher harmonic separation means 50 separates the original sound data to plural higher harmonic components. Higher harmonic process means 51, 52 are awaited by the number of extracted higher harmonics, and respective extracted higher harmonics are processed independently by plural higher harmonic process means 51, 52. Then, an original sound signal is separated to plural bands, and the changes in the parameters such as the amplitude and the frequency, etc., are revised so as to reduce gradually to zero from a certain point of time until the start point of time of repetition period at every band, and a musical sound signal is re-synthesized based on the revised parameters, and the processed waveform data are stored, Thus, the changes in the parameters are controlled correctly, and the waveform so that the tone color is changed smoothly before/after entering the repetition period is formed, and an electronic instrument whose tone color is changed naturally is obtained. |
