Overlap–save method: Difference between revisions

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where''':'''
*DFT<sub>N</sub> and IDFT<sub>N</sub> refer to the [[Discrete Fourier transform]] and its inverse, evaluated over ''N'' discrete points, and
*{{math|L}} is customarily chosen such that {{math|N {{=}} L+M-1}} is ana integernumber power-of-2with small prime factors, and the transforms are implemented with the [[Fast Fourier transform|FFT]] algorithm, for efficiency.
*The leading and trailing edge-effects of circular convolution are overlapped and added,{{efn-ua
|Not to be confused with the [[Overlap-add method]], which preserves separate leading and trailing edge-effects.