| 摘要 |
PURPOSE:To expand the capability of musical expression without increasing the scale of the device and to give a versatile tone variation to the musical sound by restricting the band area of input signals in plural filters by their specific frequency properties respectively, controlling the level of the input signals respectively, and then mixing the input signals and returning to an adding means as an input signal. CONSTITUTION:A voice signal input from an external signal input terminal 201 is converted into a digital data in an A/D converter 24, and then multiplied by a multiplication coefficient LV1 fed from an operator data generating/feeding member 19 in a multiplier 251. An external digital signal input from an external input terminal 202 is multiplied by a multiplication coefficient LV2 fed from the operator data generating/feeding member 19, and then, added to the output signal from the multiplier 251 in an adder 26. From the output signal of the adder 26, frequency components corresponding to the filters are extracted in filters 271 to 27n, and then, respective level envelopes are extracted in envelope detectors 281 to 28n. And the extracted results a1 to an are output as parameters to control a sound source 22. |
