| 摘要 |
PURPOSE:To synthetically realize the reverberation effect, resonance effect, and the damper pedal effect of an electronic piano and prevent the deterioration of the tone due to these effects by providing multiple musical sound wave-form output means outputting the preset musical sound wave-forms corresponding to the delay time of a loop circuit, a musical sound wave-form synthesizing means, and an output feedback means. CONSTITUTION:A controller 6 detects the depression of keys of a finger board 2 and actions of a damper pedal 4 and outputs key-on signals KON1-88 and the damper action quantity DMPR. It also generates the delay time DLY1-88 and the string characteristic filter coefficients STRG1-88 and outputs them to a sound source section 8. An information conversion section 18 outputs the damper characteristic filter coefficients DMPF, DMPG and the feedback level FBLEL applied to sound sources 8-1-88. The sound source 8 outputs the musical sound wave-forms with the preset pitch in response to these parameters, they are synthesized by an adder 10 and inputted to a multiplier 12 and an echo plate resonance application section 14. The application section 14 outputs the output signal applied with the resonance effect by an echo plate, an adder 16 adds these inputs and feeds back them to the sound sources 8-1-88. |
