1) time-frequency spectrum
时频谱
1.
Study of 2-dimensional signals time-frequency spectrum of Hilbert-Huang transform
二维信号Hilbert-Huang变换时频谱研究
2.
It is showed that Hilbert-Huang transform is superior to S-transform in revealing the characteristics of time-frequency spectrum,and the instantaneous spectrum of Hilbert-Huang transform is a good indicator of hydrocarbon accumulation.
首先将信号分解为有限数量的固有模态函数I MF,再对这些I MF求解瞬时频率,进而获得信号的时频谱。
2) frequency spectrun aging
频谱时效
3) time varied spectrum
时变频谱
1.
Speech signal spectrum analysis is the time varied spectrum analysis.
针对语音信号频谱分析实际上是时变频谱分析的特性 ,详细地讨论了用 FFT技术对语音进行频谱分析过程中的方法问
4) Long-time spectrum
长时频谱
6) joint time-frequency spectrum
时频谱图
1.
In this paper,according to the characteristic of seismic signal s noise,one estimation method of seismic signal s first arrival based on triple correlation of joint time-frequency spectrum is introduced,and the results of experiment and conclusion are presented.
本文通过对地震信号噪声特性的分析,研究了基于联合时频谱图三重相关的地震信号初至的估计方法,并给出了实验结果和结论。
补充资料：时发时散翳
时发时散翳 时发时散翳 病证名。见《一草亭目科全书》。即聚开障。详该条。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条