Therefore HHT was a kind of new time-frequency method for analyzing and processing the blasting vibration signals.
分析认为HHT是一种全新而更优越的分析与处理爆破震动信号的时频方法。
The hybrid time-frequency method was modified to analyze the simultaneous switching noise in power distribution network.
对时频域混合方法加以改进用于分析电源分配网络同步开关噪声。
The experiment result shows that the time-frequency method based on EMD can effectively extract the feature of unbalanced fault signal and is proper for non-frequency modulation signal procession.
研究结果表明：基于经验模式分解的时频分析方法可以很有效地提取到非平稳故障特征信号，是一种适合于非线性信号处理的方法。
The Lamb modes in the AU signals were analyzed using time-frequency method, and the energy variation of Lamb modes was correlated to the adhesive bond strength with good correlation.
兰姆波各模式在时频空间能量分布变化与胶接强度有较好的相关性。
The Lamb modes in the AU signals were analyzed using time-frequency method, and the energy variation of Lamb modes was correlated to the adhesive bond strength with good correlation.
兰姆波各模式在时频空间能量分布变化与胶接强度有较好的相关性。
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