Patent ID: 8385556

Claim:
A system for generating parametric stereo data from phase modulated stereo data comprising: a phase difference system receiving left channel audio data and right channel audio data and generating phase difference data based on a phase difference between left channel frequency domain data generated from the left channel audio data and right channel frequency domain data generated from the right channel audio data, wherein the left channel frequency domain data comprises left channel amplitude data and left channel phase data, and the right channel frequency domain data comprises right channel amplitude data and right channel phase data; a phase difference weighting system receiving the phase difference data and generating weighting data to adjust the left channel amplitude data and the right channel amplitude data based on the phase difference data; and a magnitude modification system adjusting the left channel amplitude data and the right channel amplitude data using the weighting data and eliminating the left channel phase data from the left channel frequency domain data and the right channel phase data from the right channel frequency domain data.