In a reference paper, the authors suggested a new sophisticated communication tool for air traffic controllers. The communication tool should consist of a loudspeaker array that focuses spatialized sound. Spatialization of the incoming signals helps to better distinguish between the different communication partners (i.e. the pilot and other co-controllers), and it is achieved with the technique of Transaural Stereo. Sound focusing avoids strong room excitation and is accomplished with a weighted Delay & Sum Beamformer. This paper provides measurement results that proof the concept of the outlined method. In particular, the focusing properties of the array are proofed and the preconditions for a correct rendering of the spatialized signals are investigated.
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