| 摘要 |
PURPOSE:To control the level of a musical sound signal in real time through easy operation to a level that a player desires. CONSTITUTION:This electronic musical instrument is equipped with the closed loop consisting of a driving signal generating circuit 5, an adder 6, a delay circuit 7, an HPF 8, an LPF 9, and an APF 10, and a multiplier 11 and outputs a signal circulating in the closed loop as a musical sound signal. Further, the electronic musical instrument is provided with a full-wave rectifying circuit 12 which controls the feedback coefficient of the closed loop corresponding to performance information according to a feedback coefficient and a peak value of the closed loop which are set in advance, a smoothing circuit 13, subtracters 14 and 15, a peak value register 16, a feedback coefficient register 17, a half-wave rectifying circuit 18, and a normalizing circuit 19. |
