Through collecting vibration signal and analyzing it in the frequency domain in the condition of changing parameter cutting, a single self power spectrum is hard to detect tool breakage effectively.

在变切削参数的加工工况下，通过对振动信号的采集和频域处理，发现采用单一的自功率谱方法难以有效检测出刀片破损。

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Spectrum magnitude of an earthquake is an important source parameter of earthquake size in seismology research.

谱震级是表征地震强弱的量度，是地震学研究中的一个重要的地震参数。

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For improving the precision of the frequency measure, presents a frequency measure algorithm by integrating automatic adjusting the sampling parameter and spectrum correction.

为提高频率测量精确度，提出一种自动调整采样参数与频谱校正相结合的频率测量算法。

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