fft witout using fft function
显示 更早的评论
how can we write program for fft without using fft function
1 个评论
Wayne King
2011-10-13
are you just trying to write a function to compute the DFT, or are you really trying to write an implementation of the DFT that is not brute force?
采纳的回答
Greg Heath
2011-10-13
0 个投票
Assuming you mean DFT with uniformly sampled time and frequency and not F(ast)FT, convert the summation in the documentation into a matrix multiplication.
help dftmtx type dftmtx doc dftmtx (someone was smoking something when they wrote this)
Hope this helps.
Greg
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Spectral Estimation 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
