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本文把格型结构预测器的优点用到CCITT G.721建议32Kb/s ADPCM编解码系统中,对该算法中的预测器进行了改进.通过计算机模拟,结果表明:修改后的预测器比原来的预测器性能优越。
In this paper, we use the advantage of the trellis structure predictor in the ADPCM codec system proposed by CCITT G.721 for 32Kb / s, and improve the predictor in this algorithm.Computer simulation shows that the modified predictor has better performance than the original Predictor performance is superior.