Rectangular function

Plot of sinc(x) function with its frequency spectral components.

The rectangular function (also known as the rectangle function, rect function, Pi function, gate function, unit pulse, or the normalized boxcar function) is defined as:

Alternative definitions of the function define $\mathrm{rect}(\pm \tfrac{1}{2})$ to be 0, 1, or undefined.

单词	Gate function
释义	Gate function 英语百科 Rectangular function The rectangular function (also known as the rectangle function, rect function, Pi function, gate function, unit pulse, or the normalized boxcar function) is defined as: Alternative definitions of the function define $\mathrm{rect}(\pm \tfrac{1}{2})$ to be 0, 1, or undefined.
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Gate function

Rectangular function