Patent ID: 8265299
Filing Date: 2012-09-11
Classification: G10L,H04S

Abstract:
1. A method for processing an audio signal, the method comprising: obtaining, at an audio decoding apparatus, a plural-channel audio signal including a speech component signal and other component signals; obtaining, at the audio decoding apparatus, a gain value of the audio signal; determining, at the audio decoding apparatus, whether the audio signal is an inverse-phase mono signal including a left and right channel whose phase is inverted; inverting, at the audio decoding apparatus, a phase of the obtained gain value corresponding to one channel of the audio signal when the audio signal is the inverse-phase mono signal; obtaining, at the audio decoding apparatus, a modification strength parameter determining a strength of a modification of the speech component signal; modifying, at the audio decoding apparatus, the phase inverted gain value based on the modification strength parameter; and modifying, at the audio decoding apparatus, the speech component signal based on the modified gain.