The frequency of a sound wave, perceived as pitch, is the number of compressions that pass a fixed point per unit time.

声波的频率就是感觉的音调，是单位时间通过定点的压缩数目。

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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.

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；

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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.

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；

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