| 摘要 |
PROBLEM TO BE SOLVED: To speed up a process by comprising a plurality of input terminals containing a plurality of return terminals for receiving a return aural signal from an external processor, and a plurality of output terminals containing a sending terminal for supplying an aural signal to the external processor. SOLUTION: 3-stereo inputs 102, 104 and 106 composed of right and left channels are provided in this device. These inputs are supplied respectively to add-up amplifiers 108, 110 and 112, and these amplifiers selectively couple an input aural signal to a process signal from other channel paths. Outputs of the add-up amplifiers 108, 110 and 112 are input to ex-level control circuit 114, 116 and 118. They are supplied along signal paths 166, 168, 170 from these circuits. |
