| 摘要 |
PURPOSE: To simplify constitution and to rapidly attenuate a generated musical sound by touching to a string when a signal out of the range of a prescribed level is outputted continuously from a string vibration detection means by performing muffling instruction. CONSTITUTION: Whether a value of DATA storing an A/D conversion value of a photodiode corresponding to CH lies on the plus side or the minus side of INZ (CH) ±β is detected. When it is DATA>INZ (CH) +β and lies on the plus side, whether or not it is in the state of PLS (CH) = 1 at this time is discriminated. When it is PLS (CH) = 1, since the state of DATA>INZ (CH) +β is continued from before, whether or not the value of TIM (CH) counting the duration of DATA>INZ (CH) +β becomes γ or above is discriminated, and when it becomes TIM (CH) > γ, muffling processing is executed. |
