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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

Peter D. Welch

Spectral density estimation

Fast Fourier transform

Discrete Fourier transform (general)

1967

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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“The use of fast Fourier transform for the estimation of power spectra: A method based on time averaging over short, modified periodograms” is a paper by Peter D. Welch published in 1967. It has an Open Access status of “closed”. You can read and download a PDF Full Text of this paper here.