Patent ID: 7343018

Claim:
A system of sound transducers, in particular loudspeakers, comprising n loudspeakers (n=2 . . . x) which are arranged according to a regular pattern substantially along one line in a column-shaped housing, wherein the sound transducers are each provided with an associated filter, which filters all receive an audio signal at an input thereof and deliver a signal at an output thereof to the associated sound transducer, in order that the sound transducers in operation possess a signal pattern with a predetermined characteristic, characterized in that means are provided for applying to each loudspeaker n in the column a voltage V n , according to: V n = V · ⅇ - 0 , 5 ⁢ ( α · dls n  dls max  ) 2 wherein: V n : the voltage on the terminals of loudspeaker n; V: the voltage on the terminals of the loudspeakers in the acoustic center of the column; dls n : the distance in meters of loudspeaker n to the acoustic center of the column; dls max : the distance in meters to the acoustic center of the loudspeaker farthest removed therefrom; α: parameter depending on coverage angle, frequency and array dimension according to the relation: α = β · f · l array k wherein: β: the vertical coverage angle in degrees, which is fixedly chosen for a particular design; f: the frequency in Hz; l array : the length of the array in meters; k: constant=14.10 3 given the units mentioned for β, f and l array .