| 摘要 |
PURPOSE:To individually set the control information of a low-frequency signal for frequency modulation and amplitude modulation. CONSTITUTION:Saw tooth waves for vibratos and sound volume variation are generated (S1-S4 and S13-S15). Then a waveform which is previously specified and its crest value are obtained according to the saw tooth waveforms (S5 and S16) to generate a delay time (S6-S8 and S17-S19). A modulation value is obtained from the delay time, crest value, and depth (S10 and S21). Saw tooth waveform rates PLRV and ADRV, waveform specification data PWV and AWV, crest values PLW and ALW, delay initial values PDLCT and ADLCT, delay rates PDRV and ADRV, and depths PDPTH and ADPTH which are used are individually set. |
