Patent ID: 8666081

Claim:
A method for processing a media signal, comprising: receiving, by an audio processing apparatus, an audio signal including a first channel signal and a second channel signal; estimating a center sound by applying a band-pass filter to the first channel signal and the second channel signal; obtaining a first ambient sound by subtracting the center sound from the first channel signal; obtaining a second ambient sound by subtracting the center sound from the second channel signal; canceling cross-talk on at least one of the first ambient sound and the second ambient sound; applying at least one of a delay filtering and a reverberation filtering to at least one of the first ambient sound and the second ambient sound to generate a processed ambient sound; and generating a pseudo surround signal using the center sound and the processed ambient sound, wherein the at least one of the delay filtering and the reverberation filtering is applied to the first ambient sound or the second ambient sound from which the cross-talk is canceled.