what is fftshift ?

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Jim
Jim 2012-5-18
Hi,
What is fftshift command will do exactly?
Thanks in advance

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回答（1 个）

Wayne King
Wayne King 2012-5-18
It shifts the DC (zero frequency component) to the center of the signal or image. Have you seen the explanation in the documentation?
http://www.mathworks.com/help/techdoc/ref/fftshift.html

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