Patent ID: 6272226
Filing Date: 2001-08-07
Classification: H04B,H04H,H04N,H04R

Abstract:
A method of transmitting stereo audio information across a distribution medium, the stereo audio information comprising a first audio component corresponding to a sum (L+R) of a left channel audio and a right channel audio signal, and a second audio component corresponding to a difference (L-R) between the left channel audio signal and the right channel audio signal, the method comprising the steps of:(1) subtracting the first audio component from the second audio component to produce a difference signal and passing the difference signal through a Hilbert transformer to produce a transformed difference signal;(2) using the transformed difference signal and the first audio component summed with the second audio component to modulate a carrier signal to produce an independent sideband (ISB) modulated signal comprising upper and lower sidebands one corresponding to the first audio component and the other corresponding to the second audio component; and introducing the independent sideband modulated signal into a distribution medium.