Rectangular Window

Also known as Dirichlet window. An amplitude weighting used to truncate continuous time signals to fit within the length of the DFT window. The rectangular window has a value of 1 over the length of the window and 0 outside.

The fourier transform of a rectangular window is the sinc function:


On a log scale the response is:

See also: Blackman Window, Blackman-Harris Window, Cauchy Window, Fast Fourier Transform, Hamming Window.

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Subjects: Noise & Vibration Signal Processing