PROBLEM TO BE SOLVED: To take out a total output from a mixer at an optional position by making it possible to use a mixing signal by each mixer in cascade connection of a digital mixer. ;SOLUTION: A bi-directional cascade connecting mixer 11 adds plural input signals 1 to n (x, y)ch together by an adder 12 and adds a cascade signal Sc outputted from another mixer thereto by an adder 13 to output as a cascade output (CO). Switches 153 and 154 switch a signal to give mixing output stages 16 to 18 to an adding signal Si or the cascade signal Sc depending on a cascade master 11m or a cascade slave 11s. Based on setting of a controller 11C, the switches 153 and 154 are switch-controlled and a delay circuit 19 adjusts a phase difference between the mixing output signals of each of the mixers 11m and 11s.;COPYRIGHT: (C)2000,JPO
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