By applying the concepts of critical distance, equivalent acoustic distance, needed acoustic gain, potential acoustic gain, and inverse square law attenuation to the analysis of the relative positioning of the talker, the listener, the microphone, and the loudspeaker in a total system which is to be Acousta-Voiced-, it is possible to accurately predict the actual performance of the proposed system. The acoustic gain needed for adequate performance, the acoustic gain actually available from the chosen configuration, and the required electrical power input to the loudspeaker are all easily calculated from basic formulas.
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