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PCM编码 A律simulink

于 2022-07-09 发布 文件大小:32.68 kB
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PCM编码A律 PCM在通信系统中完成将语音信号数字化功能,它的实现主要包括三个步骤完成:抽样、量化、编码。分别完成时间上离散、幅度上离散、及量化信号的二进制表示。根据CCITT的建议,为改善小信号量化性能,采用压扩非均匀量化,有两种建议方式,分别为A律和μ律方式,我国采用了A律方式,由于A律压缩实现复杂,常使用 13 折线法编码,采用非均匀量化PCM编码。

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