Thinned lattice filter for LPC analysis

Author

Chan, Cheung-Fat ; Law, Kwok-Wah

Author_Institution

Dept. of Electron. Eng., City Polytech. of Hong Kong, Kowloon, Hong Kong

Volume

1

fYear

1992

fDate

23-26 Mar 1992

Firstpage

117

Abstract

The authors introduce a spectral analysis technique for LPC systems based on using a high-order lattice filter having only few nonzero reflection coefficients. An efficient algorithm based on dynamic programming techniques has been developed to find the nonzero coefficients and their corresponding delays for the thinned lattice filter. Simulation results show that the thinned filter approach can achieve more accurate spectrum fitting to speech signals

Keywords

digital filters; dynamic programming; filtering and prediction theory; linear predictive coding; spectral analysis; speech analysis and processing; LPC analysis; LPC systems; algorithm; delays; dynamic programming; high-order lattice filter; nonzero reflection coefficients; simulation results; spectral analysis; spectrum fitting; speech signals; thinned lattice filter; Autocorrelation; Cities and towns; Delay; Dynamic programming; Filters; Heuristic algorithms; Lattices; Linear predictive coding; Reflection; Speech analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on

Conference_Location

San Francisco, CA

ISSN

1520-6149

Print_ISBN

0-7803-0532-9

Type

conf

DOI

10.1109/ICASSP.1992.225958

Filename

225958