This book focuses on the discrete Fourier transform (DFT), discrete convolution, and, particularly, the fast algorithms to calculate them. These topics have been at the center of digital signal processing since its beginning, and new results in hardware, theory and applications continue to keep them important and exciting.
C. Sidney Burrus
Steven G. Johnson
Cut Rita Zahara
C. Sidney Burrus et al., “Fast Fourier Transforms ,” Open Educational Resource (OER) , accessed March 1, 2021, http://oer.iain-padangsidimpuan.ac.id/items/show/818.