说明：  包括的多个示例源代码有：一维线性非线性近似、二维线性非线性近似、使用线性滤波过滤噪声、使用小波门限消除噪声、使用小波变换压缩一维信号、二维小波图像压缩等等。
(Including the source code of a number of examples are: a linear one-dimensional non-linear approximation, nonlinear two-dimensional linear approximation, the use of linear filtering noise filtering, the use of wavelet thresholding to eliminate noise, the use of one-dimensional wavelet compression signal, two-dimensional wavelet image compression and so on.)