研究发现由于混合激励模型能够很好地提取浊音的基音周期，并能良好的描述语音的基音周期波形，所以它具备很好的描述浊音激励的能力；

Mixed excitation model can extract the pitch better and describe the pitch wave better, so it has the capability of describing the excitation of sonant.

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将码字索引空间按照带通浊音度模式进行细致划分，全浊音模式下的基音周期得到了更多的码矢量，从而进一步提高了基音周期的量化精度。

The size of the code book for the pitch is enlarged in the all-voiced mode so that the pitch can be more exactly quantized.

youdao

将码字索引空间按照带通浊音度模式进行细致划分，全浊音模式下的基音周期得到了更多的码矢量，从而进一步提高了基音周期的量化精度。

The size of the code book for the pitch is enlarged in the all-voiced mode so that the pitch can be more exactly quantized.

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