FAST FORMANT ESTIMATION BY COMPLEX ANALYSIS OF LPC COEFFICIENTS (WedAmOR6)

Author(s) : Juan Luis García Zapata (Dept. de Matemáticas, Univ. de Extremadura, Spain) Juan Carlos Díaz Martín (Dept. de Informática, Univ. de Extremadura, Spain) Pedro Gómez (DATSI, Univ. Politécnica de Madrid, Spain)

Abstract : This paper describes a selective root finding method based in residue theory. It can find the poles of the LPC model of the speech signal close to the unit circle, without spend computations with the lesser significant internal poles. This feature makes it faster than generic root-finding methods, if the founded poles complain certain specifications. With a high order LPC model, the selected poles are in better corre-spondence with the formants than the local maxima of the spectral envelope. Experimental results are showed.

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