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Perform Frequency-Domain Convolution 

Sfilt = S .* H; % Filter = frequency-domain window

\epsfig{file=eps/filtered_transform.eps,width=\textwidth }

The filter output is now obtained by the inverse Fourier transform

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``FFT Signal Processing: The Overlap-Add (OLA) Method for Fourier Analysis, Modification, and Resynthesis'', by Julius O. Smith III, (From Lecture Overheads, Music 421).
Copyright © 2020-06-27 by Julius O. Smith III
Center for Computer Research in Music and Acoustics (CCRMA),   Stanford University
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