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- W2099651857 abstract "We propose an adaptive procedure to model non-stationary signals using autoregressive systems with time-varying parameters. A non-stationary signal that is representable by a time-varying autoregressive system has parameters which are expandable in terms of a set of basis functions. The parameters can be found by posing a minimum least-squares modeling problem and solving a large set of normal equations. The costly calculations involved in this problem make an adaptive solution quite desirable. Using the parameter expansions, we convert the modeling into a linear prediction problem and solve it adaptively for a given set of basis functions. We apply our procedure in the modeling of a segment of speech and in the estimation of the evolutionary spectrum of a non-stationary signal. >" @default.
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- W2099651857 date "2002-12-17" @default.
- W2099651857 modified "2023-09-27" @default.
- W2099651857 title "Adaptive time-varying parametric modeling" @default.
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- W2099651857 doi "https://doi.org/10.1109/icassp.1994.389861" @default.
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