还分析了输出信号波形畸变的原因，介绍了减少畸变的方法。
The cause for output waveform distortion is analyzed and the method of reducing the distortion is also described.
实验证明CMN方法简单易行，不仅能减少不同说话人间的差异，而且能有效地消除信道畸变的影响。
Experiments showed us that CMN was easy to perform, which not only could reduce the differences with different people, but also could remove the effect of various channels.
染色体数量明显减少，畸变率下降；
Reduction of chromosome number and decrease in chromosomal aberration rate.
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