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Weighted maximum likelihood autoregressive and moving average spectrum modeling

Abstract : We propose new algorithms for estimating autoregressive (AR), moving average (MA), and ARMA models in the spectral domain. These algorithms are derived from a maximum likelihood approach, where spectral weights are introduced in order to selectively enhance the accuracy on a predefined set of frequencies, while ignoring the other ones. This is of particular interest for modeling the spectral envelope of harmonic signals, whose spectrum only contains a discrete set of relevant coefficients. In the context of speech processing, our simulation results show that the proposed method provides a more accurate ARMA modeling of nasal vowels than the Durbin method.
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Submitted on : Tuesday, March 25, 2014 - 8:48:52 AM
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  • HAL Id : hal-00945273, version 1



Roland Badeau, Bertrand David. Weighted maximum likelihood autoregressive and moving average spectrum modeling. Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), 2008, Las Vegas, Nevada, United States. pp.3761--3764. ⟨hal-00945273⟩



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