Title :
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
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;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-0532-9
DOI :
10.1109/ICASSP.1992.225958
