Patent ID: 7499558

Claim:
A digital mixer, comprising: a bus for mixing signal inputted thereto; a plurality of channels, each of which controls at least one of an amplitude and a frequency characteristic of an inputted signal based on values of a plurality of parameters and outputs the characteristic-controlled signal; a plurality of channel strips provided on a console of the mixer, wherein each channel strip includes a level control and at least one rotary encoder; a plurality of layers, each of which defines a set of channels to be assigned to the plurality of channel strips amongst the plurality of channels of the mixer, wherein every adjoining two of the layers are paired; a first assignor which receives an obverse layer selection from a user, selects one of said layers as an obverse layer in accordance with said obverse layer selection, and assigns the set of channels defined by the obverse layer to the plurality of channel strips; a second and a third assignor that receive a parameter selection from the user, and select one of the plurality of parameters for the selected obverse layer and one of the plurality of parameters for a reverse layer that is paired with the selected obverse layer, wherein only one of the second and third assignors assigns to each rotary encoder the selected parameter, wherein the second assignor assigns to the rotary encoder the selected parameter for the obverse layer and the third assignor assigns to the rotary encoder the selected parameter for the reverse layer; and a parameter editor which changes, in accordance with operation of a rotary encoder provided on a channel strip, a value of the parameter assigned to the rotary encoder by said only one of the second and third assignors, said assigned parameter belongs to one of the channel of the observe layer, assigned to the channel strip by the first assignor, and the channel of the reverse layer corresponding to the assigned channel of the observe layer, and changes, in accordance with operation of the level control provided on the channel strip, a value of a level parameter belonging to the channel of the obverse layer assigned to the channel strip by the first assignor.