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

作者：P. D. Welch · 发表于：IEEE Transactions on Audio and Electroacoustics · 年份：1967 · DOI：10.1109/tau.1967.1161901 · 被引用次数：12186 · 研究领域：Advanced Electrical Measurement Techniques、Power Quality and Harmonics、Blind Source Separation Techniques

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.