Title :
A new approach for computing LSP parameters from 10th-order LPC coefficients
Author :
Huang, Dezhi ; Lianhong Cai
Author_Institution :
Dept. of Comput. Sci. & Technol., Tsinghua Univ., Beijing, China
Abstract :
An new approach for computing line spectrum pair (LSP) parameters is proposed. The LSP parameters are proved to be the roots of two 5-degree algebraic equations. The root-solving procedure of such an equation is divided into three sections: 1) compute the inflexions and split (-2,2) into 5 subintervals; 2) search three roots in the shortest three subintervals respectively; 3) calculate the other two roots by formulas.
Keywords :
linear predictive coding; polynomials; spectral analysis; speech coding; 10th-order LPC coefficients; 5-degree algebraic equations; LSP parameters; computational complexity; line spectrum pair parameters; root-solving procedure; speech coding; symmetrical polynomials; Algebra; Computational complexity; Computer science; Equations; Filters; Linear predictive coding; Polynomials; Speech coding; Speech recognition;
Conference_Titel :
Signal Processing, 2002 6th International Conference on
Print_ISBN :
0-7803-7488-6
DOI :
10.1109/ICOSP.2002.1181083
