Why should I use 2 fftshift?
3 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Hello if I have signal x (in time domain).
I saw that sometimes people do fftshift(fft(ffshift(x))). Now, I understand the usage of fftshift to move the DC to the center. But what's the reasoning behind using fftshift twice?
Seems to me that fftshift(fft(x)), should be enough.
Am I missing something here?
Thanks
0 comentarios
Respuestas (1)
Walter Roberson
el 31 de Jul. de 2015
You can test it yourself to see if the two are equal.
The magnitudes of the two are equal, but the real and imaginary components are different.
Ver también
Categorías
Más información sobre Matched Filter and Ambiguity Function en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!