Patent ID: 8498724

Claim:
A digital mixer that processes audio signals in a plurality of channels, comprising: a first current memory that stores values of parameters of each of said channels for processing of audio signals in said channels by the digital mixer; a first channel strip section including a plurality of first channel strips, on each of which a plurality of controls are disposed; a first parameter editor that edits, in response to user operation of each of said controls on each of said first channel strips, a value of a parameter, corresponding to the operated control, among parameters of a channel assigned to the first channel strip having the operated control; a first layer memory that stores first layer data for each of a plurality of first layers, respective first layer data indicating, for each of said first channel strips, any of (a) one channel to be assigned to the first channel strip among said plurality of channels, and (b) retainment of channel assignment to the first channel strip, at least one of the respective first layer data indicating said retainment for at least one of the first channel strips; and a first assigning device that, in response to a user selection of one of said plurality of first layers, selects first layer data corresponding to the selected first layer, for each of said first channel strips, if the selected first layer data indicate a channel, assigns the channel indicated by the selected first layer data to the first channel strip, and, if the selected first layer data indicate said retainment, leaves the assignment of a channel to the first channel strip unchanged, wherein the selected first layer data indicates retainment for each of the first channel strips in a first subset of the first channel strips and indicates respective channels for each of the first channel strips in a second subset of the first channel strips, and, consequently, the first assigning device leaves unchanged channel assignments for each of the first channel strips in the first subset of the first channel strips and assigns the respective channels for each of the first channel strips in the second subset of the first channel strips.