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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.

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