| 摘要 |
PROBLEM TO BE SOLVED: To obtain a musical sound signal of rich tone quality by adding complicated echo effect to a musical sound signal to be inputted. SOLUTION: A delay memory 11 delays the musical sound to be inputted. Amplifiers 12, 13 control the amplitude of the delayed musical sound signals outputted from two taps of the delay memory 11 according to the set values to output them. A CPU 1 controls LFO 14, 15 to amplitude modulate the set values of the amplifiers 12, 13. Adders 16, 17 combine the amplitude modulated delayed musical sound signals and the musical sound signals of the original sounds to output them. |
