详细表述了分数阶傅立叶变换的离散实现，将现有的算法进行比较。-In this note we make a critical comparison of some matlab programs for the digital computation of the fractional Fourier transform that are freely available and we describe our own implementation that lters the bes

S-transformer,S 变换是由连续小波变换(CWT)和短时傅里叶变换(STFT)结合发展起来的另一种时频分析方法-S-transformer, S transform is a continuous wavelet transform (CWT) and the short-time Fourier transform (STFT) together with the development of an alternative method of time-frequency anal

fftw库是世界上最快的快速傅里叶变换库，著名的MATLAB软件就是使用的该类库。本程序是一个如何使用fftw库的例子，可供参考-The fftw Library is the world s fastest Fast Fourier Transform library, well-known MATLAB software is to use the class library. This program is an example of how to use the fftw library

小波变换与Fourier变换相比，是一个时间和频域的局域变换因而能有效地从信号中提取信息，通过伸缩和平移等运算功能对函数或信号进行多尺度细化分析（Multiscale Analysis）。一般都是用MATLAB编写。本压缩包集成了大量C++写的小波变换的源程序，具有更高的移植性和可增改性。-wavelet transform by C++ program. there s many examples how the wavelet transform works.