A sound device for carrying out a homogenous sound cover for a public addressed area includes an electroacoustic source network (1), wherein each electroacoustic source (1) diffuses a version delayed by a delay (3), filtered by a filter (4) and amplified by the device input signal amplifier (5). The network is substantially rectilinear and vertical, angles .theta. which are formed by the emitting axes of the electroacoustic sources (1) and a normal to the network are selected such that .theta..sub.n>.theta..sub.n-1, wherein n is the index of the electroacoustic sources (1) numbered in ascending order from the top of the device to the bottom thereof and the delays (3) interact with the angles .theta. in such a way that the device generates a wavefront (6) whose shape corresponds to the desired sound cover of the public addressed area.