| 摘要 |
PURPOSE:To generate a musical sound signal for which random characteristic of a musical sound output from an actual natural musical instrument is accurately simulated by changing bow pressure which is a control variable, according to a random number signal. CONSTITUTION:Adding machines 1, 2, delay filters 3, 4, a non-linear part 5, and adding machines 6, 21 are provided. A random number is added to bow pressure information FBin input from outside by the adding machine 21, which will be a bow pressure variable FB to be input into the non-linear part 5. As a random number takes an independent number irrespective of the bow pressure FB, when the bow pressure FB is low, the effect of frictional sound may be too high, or when the bow pressure FB is high, the effect of frictional sound may be too low. By handling the size of the random number as a variable of the bow pressure FB, the effect of addition of frictional sound is appropriately controlled along with the variation in the bow pressure FB. A musical sound parameter correspondent to a bow pressure FB is changed according to a random number signal. |
