CROSS-BARRIER COMMUNICATION SYSTEM AND METHOD

摘要

A relatively simple communication system (1) is able to receive sound signals comprising useful signals and noise signals on a client side (5) of a sound barrier (2) and transmit the sound signals to an attendant side (6) of the sound barrier. The noise signals are transmitted at a lower system gain than the useful signals. The communication system (1) comprises two microphones (14, 15) and a loudspeaker(19). The microphones(14, 15) are arranged to receive a first and a second acoustical input signal from different locations on the client side (5). The loudspeaker (19) is arranged to radiate an acoustical output signal to an attendant (18) in the attendant space (6). The communication system (1) is adapted to generate the acoustical output signal by subtracting the first acoustical signal from the second acoustical input signal and amplifying the difference signal.