Fourier Series Coefficients
5 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Good Afternoon All,
I want to calculate the fourier series coefficients of a discrete set of data (ao ak and bk). The problem is that I do not have enough data points to use the fft as I originally planned. Does anyone have any idea on how to calculate the coefficients without using the fft?
Thanks
Mel
0 Kommentare
Akzeptierte Antwort
Chaowei Chen
am 21 Aug. 2011
fft does not require a specific number of samples to work. Equivalently, it works because fft pads zeros to your sample.
If you don't want to use fft, use the definition of Fourier transform to get the coefficients. For example, a0 = mean(data), ak=mean(data*sin(2*pi/n*k)), etc.
2 Kommentare
Walter Roberson
am 22 Aug. 2011
Improve the accuracy of your results? No, probably not, but it does answer your question about how to do it without using fft().
Weitere Antworten (1)
Siehe auch
Kategorien
Mehr zu Fourier Analysis and Filtering finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!