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A prime factor FFT algorithm using high-speed convolution

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2 Author(s)
Kolba, D. ; Rice University, Houston, TX ; Parks, T.W.

Two recently developed ideas, the conversion of a discrete Fourier transform (DFT) to convolution and the implementation of short convolutions with a minimum of multiplications, are combined to give efficient algorithms for long transforms. Three transform algorithms are compared in terms of the number of multiplications and additions. Timing for a prime factor fast Fourier transform (FFT) algorithm using high-speed convolution, which was programmed for an IBM 370 and an 8080 microprocessor, is presented.

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Acoustics, Speech and Signal Processing, IEEE Transactions on  (Volume:25 ,  Issue: 4 )