Using the method of the form function of the envelope, the Q-value of crustal media in the Ningxia region is determined.
利用包络形状函数方法测定了宁夏地区介质品质因素Q值。
This method has better effect and function in interpreting and demonstrating the concept of envelope cutting gear than observing cutting gear or making experiment with instrument.
其解释、演示齿轮范成的概念比观察实际切削加工和用仪器做实验具有更好的效果，更多的功能。
In this thesis, based on LPC analysis, a method for calculating the spectrum converted system unit impulse function is proposed. So the spectral envelope is converted efficiently.
本文基于LPC分析，提出用反傅里叶变换的方法来求解频谱搬移后的系统单位冲激响应，以此来实现频谱包络的变换，并取得了较好的效果。
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