Audio precompensation controller design with pairwise loudspeaker channel similarity

Abstract

A method for determining an audio precompensation controller for an associated sound generating system comprising a total of N≧2 loudspeakers, each having a loudspeaker input. The audio precompensation controller has a number L≧2 inputs for L input signal(s) and N outputs for N controller output signals, one to each loudspeaker. It is relevant to: estimate (S), for each one of at least a subset of the N loudspeaker inputs, an impulse response at each measurement position; specify (S), for each one of the L input signal(s), a selected one of the N loudspeakers as a primary loudspeaker and optionally a selected subset S including at least one of the N loudspeakers as support loudspeaker(s); select (S) at least one loudspeaker pair, that is required to be symmetrical with respect to the listing position; and specify (S), for each primary loudspeaker, a target impulse response at each measurement position.