Howtosignalprocessing
- How to denoise a signal using FFT in Matlab?
- How to remove noise from signal using matlab?
- How to use the IFFT function in Matlab?
How to denoise a signal using FFT in Matlab?
Reducing the noise of a signal in Matlab using fast fourier transform. % number of signal measurements n = 1000; % measuring from 0 to 2 pi length = 2*pi; % difference between two measurements h = length/n; % steps t = (0:h:length-h); % Signal S = sin(2*t)+cos(7*t)-cos(t);
How to remove noise from signal using matlab?
You could do Fourier filtering in the spectral domain like Star suggested. This will filter the entire signal. So you have to ask yourself if it's okay to filter the entire signal or if you want just the spike fixed and all the other values to remain untouched.
How to use the IFFT function in Matlab?
X = ifft( Y ) computes the inverse discrete Fourier transform of Y using a fast Fourier transform algorithm. X is the same size as Y . If Y is a vector, then ifft(Y) returns the inverse transform of the vector. If Y is a matrix, then ifft(Y) returns the inverse transform of each column of the matrix.
