Distortion effects of several cumulant-based wiener filtering algorithms
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Some Single-Microphone Speech Enhancement algorithms based on the iterative Wiener filtering Method due to Lim-Oppenheim  are evaluated. In the original Lim-Oppenheim algorithm, AR spectral estimation of speech is carried out using a second-order analysis, but our algorithms consider an AR estimation from a cumulant analysis. This work extends some preceding papers due to the authors , . Third- and fourth-order cumulant-based algorithms are compared to classical second-order one. This comparison is evaluated by considering three different noisy environments. A detailed study based on a frame-by-frame analysis leads to an optimum iteration of each algorithm as a trade-off between noise reduction and distortion effects. Voiced and unvoiced sounds are separately discussed. We conclude that third-order cumulant-based algorithm offers a more valuable performance than the others.
CitationSalavedra, J. Distortion effects of several cumulant-based wiener filtering algorithms. A: European Conference on Speech Communication and Technology. "EUROSPEECH '99: 6th European Conference on Speech Communication and Technology: September 5-9, 1999: Budapest, Hungary". Budapest: 1999, p. 2631-2634.
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