Howtosignalprocessing
What is the difference between Overlap-add and overlap save method?
Two methods that make linear convolution look like circular convolution are overlap-save and overlap-add. The overlap-save procedure cuts the signal up into equal length segments with some overlap. Then it takes the DFT of the segments and saves the parts of the convolution that correspond to the circular convolution.
What is overlap method in DSP?
Overlap–save is the traditional name for an efficient way to evaluate the discrete convolution between a very long signal xn and a finite impulse response FIR filter hn. Given below are the steps of Overlap save method − Let the length of input data block = N = L+M-1. Therefore, DFT and IDFT length = N.
