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- W2010131467 abstract "This paper introduces a method for real-time selective root finding from linear prediction (LP) coefficients using a combination of spectral peak picking and complex contour integration (CI). The proposed method locates roots within predefined areas of the complex z-plane, for instance roots which correspond to formants while other roots are ignored. It includes an approach to limit the search area (SEA) as much as possible. For this purpose, peaks of the group delay function (GDF) serve as pointers. A frequency weighted wGDF will be introduced in which a simple modification enables a parametric emphasis of the GDF spikes to separate merged formants. Thus, a nearly zero defected separation of peaks is possible even when these are very closely spaced. The performance and efficiency of the proposed wGDF-CI method is demonstrated by comparative error-analysis evaluated on a subset of the DARPA TIMIT corpus." @default.
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- W2010131467 date "2012-09-01" @default.
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- W2010131467 title "Fast and robust formant detection from LP data" @default.
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- W2010131467 doi "https://doi.org/10.1016/j.specom.2012.03.002" @default.
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