FFT 快速傅里叶变换 DFT算法笔记

傅里叶变换详解
https://www.zhihu.com/question/23175691

开源算法实现
https://github.com/orivej/go-fft/blob/master/fft.go
https://github.com/ledyba/go-fft
https://github.com/strickyak/fft_go
https://github.com/mjibson/go-dsp/tree/master/fft

MFCC Filter-Bank
http://www.cnblogs.com/dystopia/archive/2016/08/29/5818687.html

了解FFT和信号加窗
http://www.ni.com/white-paper/4844/zhs/
什么是汉明窗?加Hanmming窗的作用?
http://www.cnblogs.com/lxy2017/p/4049124.html

fft C语言实现
https://rosettacode.org/wiki/Fast_Fourier_transform#C
C99 可变长数组
http://www.cnblogs.com/pang123hui/archive/2011/01/27/2309918.html
gsl库 fft
http://blog.csdn.net/liyuanbhu/article/details/40925873

fft后,第一个点是直流分量0Hz,最后一个点的下一个点是Fs
http://blog.sina.com.cn/s/blog_640029b301010xkv.html
http://blog.csdn.net/hzn407487204/article/details/6249945

ARM rfft
http://bbs.21ic.com/icview-827266-1-1.html

语谱图 fft=512 128区别
http://blog.csdn.net/godloveyuxu/article/details/54135515


发表于:2017-10-12 15:19:59

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