EFFECT GRANTING DEVICE FOR MUSICAL SOUND

摘要

PURPOSE:To dynamically vary the effect of an artificial stereophonic circuit, which give a feeling of extent to a monaural musical sound signal, during a musical performance. CONSTITUTION:The composition ratio when the monaural signal and a delay signal delayed by delay 1 are put together by addition (subtraction) by adders 6 and 7 is determined by coefficients A and (1-A) inputted to multipliers 2 and 3 and multipliers 4 and 5. This coefficient is varied with time to vary the degree of the feeling of extent of a musical sound with time. A modulation signal A and its complementary number 1-A are used as the coefficient and square root arithmetic parts 8 and 9 calculates the square roots of those values so that the effective value do not vary even after both the signals are put together by addition.