摘要
研究了数字信号处理中的小波分析方法。基于多尺度分析的思想，提出了信号的小波分解及重构新算法和小波包算法。由于算法中采用了频移技术，在小波分解中避免了频率的折叠现象，同时在小波包算法中也解决了频带的错位问题。
The wavelet analysis method for digital signal processing is studied.Based on the concept of multiresolution analysis,a new wavelet algorithm is proposed for signal decomposition,reconstruction,and the wavelet packets algorithm.In the algorithm,a frequency transfer technique is introduced,so the frequency overlapping in wavelet decomposition algorithm is avoided.The problem of the frequency band derangement in wavelet packet algorithm is also solved.It is to be more powerful and valuable in application compared with other algorithms.
出处
《振动工程学报》
EI
CSCD
1999年第3期423-428,共6页
Journal of Vibration Engineering
