| 摘要 |
PURPOSE:To synthesize a musical tone in which a noise is reduced in a high frequency area and also, not losing the feature of the musical tone of a natural musical instrument even in a low frequency area. CONSTITUTION:A microprocessor 2 outputs performance information corresponding to the performance of a keyboard 1. Also, a key touch detection circuit 3 outputs the performance information with respect to key touch. A parameter formation circuit 4 for excitation generates a parameter which characterizes on the musical tone according to the performance information, and supplies it to a sound source 6. Also, a linear system parameter circuit 5 generates a parameter for the synthesis of the musical tone according to the performance information, and supplies it to the sound source 6. The sound source 6 is provided with a circuit which generates a nonlinear function, and supplies the nonlinear function in which the rounding degree of a discontinuous point is adjusted according to a parameter with respect to a musical interval to a delay loop circuit. A signal circulating on the delay loop circuit is outputted as a musical tone signal. |
