Patent ID: 7313242

Claim:
A method for transmitting audio information, comprising: receiving at least two audio signals, the audio signals comprising different audio information; synthesizing a carrier signal and at least two side band signals; encoding the at least two side band signals with different ones of the different audio information; transmitting the carrier signal and the encoded side band signals to a plurality of transducers; transmitting the carrier signal and the encoded side band signals from the plurality of transducers; and actively adjusting a phase of the carrier signal and the encoded side band signal transmitted by at least one of the transducers relative to a phase of the carrier signal and the encoded side band signal transmitted by at least one other of the transducers for the purpose of controlling the directivity or focus of at least two hypersonic beams produced by the transducers, wherein at least two of the hypersonic beams produce different auditory signals, the auditory signals corresponding to different ones of the audio signals.