Patent ID: 8335331

Claim:
A method of processing multiple surround audio channels to produce left and right rendering channels for output to a stereo pair of loudspeakers, wherein the multiple surround audio channels comprise at least left and right channels and left rear and right rear channels, the method comprising: processing the left and right channels in a direct sound processing path; processing the left and right channels in a diffuse sound processing path; processing the left rear and right rear channels in a rear channels processing path; in the diffuse sound processing path: applying a power 360 degree head related transfer function associated with listener diffuse sound field response; combining left and left rear channels into a combined left channel; combining right and right rear channels into a combined right channel; applying a first reverberation to the combined left channel; and applying a second reverberation to the combined right channel, wherein the second reverberation differs from the first reverberation.