1) Wavelet Package Time-Frequency Distribution
小波包时-频分布
2) wavelet packet time-frequency analysis
小波包时频分析
1.
Based on two typical methods for analyzing nonstationary signals,the wavelet packet transform and the short time Fourier transform(STFT),a method named wavelet packet time-frequency analysis(WPTFA) was put forward.
证明了小波包时频分析的能量守恒性,形成了一套较完善的分析体系。
3) wavelet packet time-frequency component spectrum
小波包时频分量谱
1.
Four concepts related to the WPTFA method were defined,which were wavelet packet time-frequency component spectrum,amplitude spectrum of wavelet packet time-frequency component,wavelet packet time-fequency spectrum,amplitude spectrum of wavelet packet time-frequency.
建立了相应的小波包时频分量谱、小波包时频分量幅度谱、小波包时频谱、小波包时频幅度谱等概念。
4) wavelet packet time-frequency spectrum
小波包时频谱
5) Local wave time-frequency distribution
局域波时频分布
1.
A new adaptive time-frequency analysis method, Local wave time-frequency distribution, is presented.
该文提出了一种具有自适应特性的时频分析方法-局域波时频分布,对旋转机械中常见的动静件碰摩、不对中早期故障信号进行了分析,和频谱分析进行了比较。
6) time-frequency and wavelet analysis
时频-小波分析
1.
Stall inception and development have been studied using the method of time-frequency and wavelet analysis on the pressure signal from an eight-stage compressor engine.
采用时频-小波分析法对某型发动机的八级轴流压气机级间压力信号的失速先兆及发展信息进行了分析,检验了失速时刻信号的奇异值。
补充资料：哭李频员外时在建川
【诗文】：
出麾临建水，下世在公堂。
苦集休开箧，清资罢转郎。
瘴中无子奠，岭外一妻孀。
定是浮香骨，东归就故乡。
【注释】：
【出处】：
全唐诗：卷716-35
出麾临建水，下世在公堂。
苦集休开箧，清资罢转郎。
瘴中无子奠，岭外一妻孀。
定是浮香骨，东归就故乡。
【注释】：
【出处】：
全唐诗：卷716-35
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