| 摘要 |
PROBLEM TO BE SOLVED: To easily achieve the temporal change of the tone color of a musical sound signal generated by sine synthesis and to generate a continuous sound having no tone color change by generating the musical sound signal based on the read harmonic coefficient set information. SOLUTION: A selection address generation section 20 receives key information (key-on/off information, range and touch information), tone color information (tone color selection) and a clock signal X and feeds the harmonic coefficient set readout address and interpolation calculation data to a harmonic coefficient calculation section 21. The harmonic coefficient calculation section 21 stores a harmonic coefficient set memory, reads out two harmonic coefficients for each order of harmonic waves based on the address fed from the selection address generation section 20, makes an interpolation calculation, and outputs a harmonic coefficient set Hq. A wave-form calculation section 25 receives the harmonic coefficient set Hq read out of a harmonic memory 22 and the phase information P outputted from an implementation control circuit at the same cycle as the harmonic coefficient calculation section 21 and outputs the musical sound wave-form data for one cycle in sequence. |
