该小波恢复函数主要的功能是对分解后的信号进行有效恢复，能复原小波分解前的信号，该程序能正常运行。-The wavelet function recovery after the main function is to decompose the signal effectively, can recover before the wavelet decomposition of signals, the program can run normally.

小波重构的时候waverec(c,l,'db1');其中c和l都应该是列向量，所以将数个向量合并成c时最好分别将他们弄成行向量，合并后转置就成了列向量。(When the wavelet reconstruction is waverec (C, l,'db1'), C and l should all be column vectors, so when several vectors are merged into C, it is best to make them a row vecto