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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。算法在工程中更具实用价值
The wavelet analysis method in digital signal processing is studied. Based on the idea of multi-scale analysis, a new algorithm of wavelet decomposition and reconstruction and a wavelet packet algorithm are proposed. Due to the frequency shift technique used in the algorithm, the frequency folding phenomenon is avoided in the wavelet decomposition and the frequency band offset problem is also solved in the wavelet packet algorithm. Algorithms in engineering more practical value