The technology of voice transformation was introduced. The algorithm of voice transformation based on harmonic sinusoidal modal was analyzed.

介绍了语音变换的相关技术，分析了利用正弦谐波模型实现语音变换的算法及流程。

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The waveforms and parameters of glottograms for modal, falsetto, breath and pressed voice are presented.

给出了胸声、假声、气声和压紧嗓音声门图波形与参数；

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Finally, other critical grammatical issues in translation such as the proper use of tenses, the passive voice and modal auxiliaries are analyzed in great detail.

另外，论文还详细研究翻译实践中诸如时态，被动语态，情态动词等重要的语法问题的处理。

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