| 摘要 |
PURPOSE:To obtain comfortable distortion effect by differentiating an input digital musical sound signal and multiplying the differentiated value by the input digital musical sound signal. CONSTITUTION:The analog musical sound signal which is inputted is supplied to an A/D converter 16. Then, an A/D converting process is carried out. Namely, an A/D converter 16 samples the input analog musical sound signal at a specific rate, converts it into a digital musical sound signal, and outputs it. This digital musical sound signal SI is supplied to a distortion circuit 17 constituted as a filter part. Then, the distortion circuit 17 performs a difference calculating process first. Then, the calculated cosine wave (COS wave) is multiplied by a sine wave (SIN wave) which is the inputted digital musical sound signal. The multiplication result is mixed with the inputted digital musical sound signal. |
