Public address system for the sonication of a sonication region, method for the sonication of a sonication region and computer program for carrying out the method

A public address system (1) for the sonication of a sonication region (2), the public address system comprising:

• a multiplicity of loudspeakers (3a,b) arranged in the sonication region (2) for outputting an input signal (4a,b) as an audio signal,
• a measuring device (5) for the detection of the audio signal at a measurement point (6) in the sonication region (2), wherein the measuring device (5) is designed to determine a propagation time difference (Δtn) of the audio signals between each of two speakers (3a,b) to the measurement point (6) and to provide the propagation time difference (Δtn) as propagation time difference data,
• a modelling module, wherein the modelling module comprises a model of the sonication region (2), positions of the loudspeakers (3a,b) in the sonication region (2) and the measurement point (6), wherein by means of the modelling module a user can define a target point in the sonication region (2), a model in the sonication region (2), or both and the modelling module is designed to determine the propagation time differences (Δtn) such that the propagation time difference (Δtn) at the target point is compensated, and
• a delay module (10), wherein the delay module (10) is designed to add a time delay to the input signals (4a,b) based on the propagation time differences (Δtn), in order to compensate for the propagation time difference (Δtn) between the audio signals at the measurement point (6),
• wherein
• the delay module (10) is connected to the measuring device (5) via a data link and the propagation time difference data is provided to the delay module (10) via a data link.