1) 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。
2) wavelet packet time-frequency spectrum
小波包时频谱
3) Wavelet Package Time-Frequency Distribution
小波包时-频分布
4) 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。
5) wavelet packets three-dimension time-frequency energy drawing
小波包三维时频能量图
1.
Time-domain characteristic parameter,frequency-domain characteristic parameter and wavelet packets characteristic parameter were extracted,and wavelet packets three-dimension time-frequency energy drawing was plotted.
利用发动机机身振动信号对活塞环失效进行监测,提取了时域特征量、频域特征量和小波包特征量,并绘制了小波包三维时频能量图。
6) wavelet packet energy-band
小波包分频带能量
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