High Quality Content by WIKIPEDIA articles! The rectangular function It is a simple step function. Alternate definitions of the function define mathrm{rect}(pm tfrac{1}{2}) to be 0, 1, or undefined. We can also express the rectangular function in terms of the Heaviside step function. Note that as long as the definition of the pulse function is only motivated by the time-domain experience of it, there is no reason to believe that the oscillatory interpretation (i.e. the Fourier transform function) should be intuitive, or directly understood by humans. However, some aspects of the theoretical result may be understood intuitively, such as the infinite bandwidth requirement incurred by the indefinitely-sharp edges in the time-domain definition.

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