Browsing Dissertations and Theses by Subject "impropriety; modulation analysis; noncircularity; nonstationary random processes; statistical Fourier analysis; time-varying systems"
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(2012-09-13)Nonstationary processes have local properties which change over time. An example is speech, which can be represented as pitch harmonics multiplied by slower-varying syllabic modulations. Commonly-used power spectral analysis ...