Patent ID: 8045572

Claim:
A packet loss concealment system comprising: a first buffer configured to store audio samples prior to a missing section of audio samples; a second buffer configured to store audio samples subsequent to the missing section; a forward propagation module configured to generate a forward propagated waveform by propagating a first waveform period that is based on the first buffer, wherein the forward propagation module is configured to increase periodicity of the first waveform period nonlinearly when propagating the first waveform period; a backward propagation module configured to generate a backward propagated waveform by propagating a second waveform period that is based on the second buffer; and a ratio control module configured to selectively determine a ratio between a first periodicity of the audio samples in the second buffer and a second periodicity of the audio samples in the first buffer, wherein the forward propagation module is further configured to selectively propagate the first waveform period using the ratio, and wherein the backward propagation module is further configured to selectively propagate the second waveform period using an inverse of the ratio.