COMPOSITE MODELING OF NONSTATIONARY SIGNALS.

被引:0
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作者
Boudaoud, M. [1 ]
Chaparro, L.F. [1 ]
机构
[1] Univ of Pittsburgh, Pittsburgh, PA,, USA, Univ of Pittsburgh, Pittsburgh, PA, USA
关键词
SPEECH; -; Synthesis;
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摘要
Most temporal signals of practical interest are nonstationary and need to be modeled using time-varying systems. In this paper a composite model for these signals is proposed which accounts for nonstationarities in the mean and the autocorrelation functions. Unbiased and consistent time-varying estimators for the mean and the variance functions are studied and used to produce zero-mean, constant-variance signals that can be modeled using autoregressive systems with time-varying coefficients.
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页码:3 / 124
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