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A fixed-point fast Fourier transform error analysis

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1 Author(s)
P. Welch ; IBM Watson Research Center, Yorktown Heights, N.Y.

This paper contains an analysis of the fixed-point accuracy of the power of two, fast Fourier transform algorithm. This analysis leads to approximate upper and lower bounds on the root-mean-square error. Also included are the results of some accuracy experiments on a simulated fixed-point machine and their comparison with the error upper bound.

Published in:

IEEE Transactions on Audio and Electroacoustics  (Volume:17 ,  Issue: 2 )