小波变换，是老外写的，比较的全，希望对大家有帮助-wavelet transform, is written by a foreigner, the entire comparison, we hope to help

快速傅里叶变换，用csharp编写的，学习学习学习学习。里边有一个类，是老外写的-Fast Fourier transform, written using csharp, learning learning learning learning. Inside a class, are written by foreigners