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Em3rgent0rdr (talk | contribs) →Rectangular window: also called uniform or misleadingly as "no window" |
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[[File:Window function and frequency response - Rectangular.svg|thumb|480px|right|Rectangular window]]
The rectangular window (sometimes known as the '''[[Boxcar function|boxcar]]''' or uniform or '''[[Dirichlet kernel|Dirichlet]] window''' or misleadingly as "no window" in some programs<ref>{{Cite web |title=Understanding FFTs and Windowing |url=https://download.ni.com/evaluation/pxi/Understanding%20FFTs%20and%20Windowing.pdf |url-status=live |archive-url=https://web.archive.org/web/20240105021252/https://download.ni.com/evaluation/pxi/Understanding%20FFTs%20and%20Windowing.pdf |archive-date=2024-01-05 |access-date=2024-02-13 |website=[[National Instruments]]}}</ref>) is the simplest window, equivalent to replacing all but ''N'' consecutive values of a data sequence by zeros, making the waveform suddenly turn on and off:
:<math>w[n] = 1.</math>
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