重要的数字信号处理函数如分裂基fft/卷积/滤波器/相关函数的Fortran实现（清华大学胡广书教授编）-Important DSP functions such as fft/conv/filters ,by Fortran

The code in this library contains an implementation for Fast Fourier Transforms on arbitrary length complex data. It is based on old FORTRAN code, found in a signal processing archive. I dissected the FORTRAN code, since it worked with normal a

FFT in Fortran as well as Basic

该程序为快速傅立叶变换程序，为一个一维FORTRAN程序。-this code is a FFT code, which is an one-dimensional code.