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The use of fast Fourier transform for the estimation of power spectra: A method based on time averaging over short, modified periodograms

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

The use of the fast Fourier transform in power spectrum analysis is described. Principal advantages of this method are a reduction in the number of computations and in required core storage, and convenient application in nonstationarity tests. The method involves sectioning the record and averaging modified periodograms of the sections.

Published in:

Audio and Electroacoustics, IEEE Transactions on  (Volume:15 ,  Issue: 2 )