| 摘要 |
Predictive encoding methods, predictive encoders, and digital systems are provided that encode input frames by computing quantized predictive frame parameters for an input frame, recomputing the quantized predictive frame parameters wherein a previous frame is assumed to be erased and frame erasure concealment is used, and encoding the input frame based on the results of the computing and the recomputing. In embodiments of these methods, encoders, and digital systems, two phase codebook search techniques used in the encoding process are provided that compute the predictive parameters in the first phase, and the predictive parameters assuming the prior frame is erased in the second phase. In the second phase, a frame erasure concealment technique is used in the computation of the predictive parameters.
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