| 摘要 |
PURPOSE: To make it possible to work a unique voice by providing the tone color working device with a means for detecting the quantity of variation, a means for comparing the variation quantity with a set value and two output means to be used for a value smaller than the prescribed value and a value larger than the prescribed value. CONSTITUTION: A detecting/comparing means S2 calculates a difference between an input signal IN and a preceding output signal OUT and judges whether the difference is larger than a previously determined value STEP or not. When the judged result is NO, an output digital signal is sent to a 1st sending means S4. When the answer of the means S2 is YES, a 2nd sending means S6 judges whether the current input signal is larger than the preceding output signal or not. When the answer is YES, a value obtained by adding the preceding output signal to the value STEP is sent to a 1st output means S8 as a current output signal. When the answer is NO, a value obtained by subtracting the value STEP from the preceding output signal is sent to the 2nd output means S10 as a current output signal. Each of the signals sent from the output means 4, 8, 10 is converted into an analog signal by a D/A converter and the analog signal is supplied to a speaker. |
