| 摘要 |
PURPOSE:To prevent the generation of a different sound in a reproducing sound at the time when coefficient data to be multiplied is changed by varying gradually multiplication coefficient data to target coefficient data at the time of switching to the target coefficient data. CONSTITUTION:An audio signal supplied to an A/D converter 1 is converted to a digital audio signal data group and supplied to a data memory 17, and a coefficient data group read out of a RAM 7 is supplied to a buffer memory 6 and held. On the other hand, by a sequence controller 10, each storage data is supplied in order to a multiplier 5, and an adder 8 accumulates a calculation output of the multiplier 5. In this case, at the time of switching multiplication coefficient data multiplied to input digital signal data to target coefficient data which is set newly, the multiplication coefficient data is varied gradually to the target coefficient data. In such a way, it can be prevented that a different sound is generated in a reproducing sound at the time of changing the multiplication coefficient data. |
