A method for automated setting of digital processing parameters intended to be applied to digital signals before broadcast by loudspeakers (HP1, HP2, HP3, HP4) placed in an environment, said method including the following steps: - a step of determining a set of frequency responses of the environment, each of the frequency responses (RF1, RF2) being determined by activating a subset of the loudspeakers of at least one loudspeaker; - an equalization step applied for each subset of at least one loudspeaker, during which filter parameters to be applied to the at least one loudspeaker of each subset are determined so as to minimize a deviation between a predetermined target frequency response (RF,c) and the frequency response (RF1, RF2) associated to the subset of at least one loudspeaker determined during the step of determining a set of frequency responses; said method being characterized in that it includes: - a second equalization step applied to at least one subset of the loudspeakers of at least one loudspeaker, to determine filter parameters to be applied to said at least one loudspeaker so as to attenuate over a set of frequencies to be corrected the frequency response of the environment obtained when all loudspeakers are active; in that it further includes: - a phase-shifting step during which at least one delay τ is applied to at least one subset of the loudspeakers of at least one loudspeaker; - a step of applying a gain to at least one subset of the loudspeakers of at least one loudspeaker; in that, during the second equalization step, a secondary target frequency response curve RF,c' is determined as follows: RF, c ′ f = { 2 RF, c f − RF f if RF f − RF, c f ≥ S RF, c f otherwise where f refers to the frequency, RF the frequency response measured with all loudspeakers being active, the filter parameters determined in the equalization step, as well as the at least one delay τ and the gain determined in the phase-shifting and gain application steps being applied to sine sweep type signals broadcast by the loudspeakers, and S referring to a positive threshold value; and in that, during the second equalization, the equalization step is applied again to at least one subset of the loudspeakers of at least one loudspeaker, to determine new filter parameters to be applied to the at least one loudspeaker of said at least one subset, so as to minimize a deviation between the secondary target frequency response curve and a frequency response associated to said at least one subset of at least one loudspeaker. - a step of determining a set of frequency responses of the environment, each of the frequency responses (RF1, RF2) being determined by activating a subset of the loudspeakers of at least one loudspeaker; - an equalization step applied for each subset of at least one loudspeaker, during which filter parameters to be applied to the at least one loudspeaker of each subset are determined so as to minimize a deviation between a predetermined target frequency response (RF,c) and the frequency response (RF1, RF2) associated to the subset of at least one loudspeaker determined during the step of determining a set of frequency responses; said method being characterized in that it includes: - a second equalization step applied to at least one subset of the loudspeakers of at least one loudspeaker, to determine filter parameters to be applied to said at least one loudspeaker so as to attenuate over a set of frequencies to be corrected the frequency response of the environment obtained when all loudspeakers are active; in that it further includes: - a phase-shifting step during which at least one delay τ is applied to at least one subset of the loudspeakers of at least one loudspeaker; - a step of applying a gain to at least one subset of the loudspeakers of at least one loudspeaker; - a phase-shifting step during which at least one delay τ is applied to at least one subset of the loudspeakers of at least one loudspeaker; - a step of applying a gain to at least one subset of the loudspeakers of at least one loudspeaker; in that, during the second equalization step, a secondary target frequency response curve RF,c' is determined as follows: RF, c ′ f = { 2 RF, c f − RF f if RF f − RF, c f ≥ S RF, c f otherwise where f refers to the frequency, RF the frequency response measured with all loudspeakers being active, the filter parameters determined in the equalization step, as well as the at least one delay τ and the gain determined in the phase-shifting and gain application steps being applied to sine sweep type signals broadcast by the loudspeakers, and S referring to a positive threshold value; and in that, during the second equalization, the equalization step is applied again to at least one subset of the loudspeakers of at least one loudspeaker, to determine new filter parameters to be applied to the at least one loudspeaker of said at least one subset, so as to minimize a deviation between the secondary target frequency response curve and a frequency response associated to said at least one subset of at least one loudspeaker.