说明：  一维小波变换，基于Mallat算法编写，用Daubechies正交小波基作为卷积核对输入信号作卷积，对结果进行重排可得一维小波变换后的尺度系数和小波系数。
(one dimensional wavelet transform based on Mallat algorithm is written, with Daubechies orthogonal wavelet base as a convolution convolution check input signal, the results are rearrangement available one-dimensional scale coefficient after wavelet transform and wavelet coefficients.)