how to make a smooth sepectrum??
16 ビュー (過去 30 日間)
表示 古いコメント
Hi guys,
I have been using the below code to make a loglog fft plot.
But i want to make a smooth spectrum, which goes through the fft plot??
I have also uploade a picture, which shows a fft plot with smooth spectrum.
Thanks in advance!
Fs = 1; % sample frequency (Hz)
N = length(A1); % number of samples
y = fft(A1);
f = (0:N-1)/Fs; % frequency range
power = abs(y).^2/N; % power of the DFT
figure(5)
bin_vals = [0 : N-1];
fax_Hz = bin_vals*Fs/N;
N_2 = ceil(N/2);
loglog(fax_Hz(1:N_2),(X_mags(1:N_2)))
0 件のコメント
回答 (1 件)
Ameer Hamza
2020 年 6 月 29 日
See smoothdata(): https://www.mathworks.com/help/releases/R2020a/matlab/ref/smoothdata.html. Pass the X_mags vector through smooth data to get a smooth profile. Similarly, you can also try low to use a low-pass filter: https://www.mathworks.com/help/signal/ref/lowpass.html on the fft data.
0 件のコメント
参考
カテゴリ
Find more on Fourier Analysis and Filtering in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!