Adaptive jitter buffer-packet loss concealment

Details Adaptive jitter buffer-packet loss concealment Adaptive jitter buffer-packet loss concealment

2008-05-15

2011-10-25

Yao, Kwang B (Department: 2473)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C704S200000

Reexamination Certificate

active

08045572

ABSTRACT:
A packet loss concealment system includes first and second buffers that stores audio samples prior to and subsequent to a missing section of audio samples. A forward propagation module generates a forward propagated waveform by propagating a first waveform period that is based on the first buffer. The forward propagation module increases periodicity of the first waveform period nonlinearly when propagating the first waveform period. A backward propagation module generates a backward propagated waveform by propagating a second waveform period that is based on the second buffer. A ratio control module selectively determines 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. The forward propagation module selectively propagates the first waveform period using the ratio, and the backward propagation module selectively propagates the second waveform period using an inverse of the ratio.

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