Patent ID: 8321216
Filing Date: 2012-11-27
Classification: G10L

Abstract:
1. A method for merging a concealment signal generated to replace one or more bad frames of an audio signal with a received signal representing one or more good frames of the audio signal received after the bad frame(s), comprising: extending the concealment signal into the first good frame received after the bad frame(s); calculating a time lag between the concealment signal and the received signal in the first good frame, wherein the time lag represents a phase difference between the concealment signal and the received signal in the first good frame; if the time lag is negative, delaying the received signal based on the time lag to generate a first delayed received signal, overlap adding the first delayed received signal and a portion of the concealment signal in the first good frame to generate a first modified received signal, and shrinking the first modified received signal over one or more frames of the audio signal to align the phase of the first modified received signal to that of the received signal.