Patent ID: 6658115
Filing Date: 2003-12-02
Classification: H03F,H04B,H04H

Abstract:
An apparatus for high fidelity wireless stereophonic transmission of audio signals not employing a carrier pilot tone as used in commercial FM broadcast systems, comprising:a plurality of audio channels wherein said audio channels carry data within a frequency range of approximately 20 hertz to 20 kilohertz; a first oscillator connected to receive one of said plurality of audio channels, and operable to provide a first carrier frequency of at least 30 kilohertz upon which the data of said one of said plurality of audio channels is imposed; a combiner electrically connected to said first oscillator to receive said first carrier signal, and coupled to combine at least a second one of said plurality of audio channels with said first oscillator signal into a composite signal, wherein said first carrier and said second one of said plurality of audio channels occupy different frequency, not employing a carrier pilot tone, bands; and a second oscillator electrically connected to said combiner, and operable to provide a second carrier frequency that is combined with said composite signal to output said composite signal at said second carrier frequency for electromagnetic transmission.