How to rapresent a signal and filter it?

1 次查看（过去 30 天）
Andrea Orlandini
Andrea Orlandini 2018-3-15
回答： Abhishek Ballaney 2018-3-15
I have a signal vector x, associated with a time vector t. I want to: ( 1 ) do the FFT and rapresent the resulting vector FFT versus the frequency; ( 2 ) filter the frequency with a highpass filter F(omega) = (omega/threshold) ./ sqrt(1+(omega/threshold).^2 ), and display in the same plot as before the filtered FFT; ( 3 ) reconstruct the signal from the filtered FFT. I searched in the whole internet but everyone is telling a different code, and nobody is telling WHY the code is written like that. Could you help me? Thanks a lot.

请先登录，再回答此问题。

回答（1 个）

Abhishek Ballaney
Abhishek Ballaney 2018-3-15
https://in.mathworks.com/help/matlab/ref/fft.html

类别

在 Help Center 和 File Exchange 中查找有关 Fourier Analysis and Filtering 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by