本文讨论了LMS自适应噪声对消器的有限字长效应。
The effects of finite word length in LMS adaptive noise canceller are discussed.
如果某个量化字长能反映出输出弱信号的变化，输出信噪比主要取决于自适应运算的字长。
If the variation of input weak signal can be reflected by certain word length, the output SNR mainly depends on the word length of adaptive operations.
熵编码由固定的码表和概率模型改进为自适应的基于上下文的变字长编码。
The entropy coding methods which adopted fixed code table and probability model are improved to adaptive context-based alterable word length coding.
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