Title :
Improved sequential linear prediction by selective time-domain coefficient extraction
Author :
Freij, G.J. ; Cheetham, B.M.G.
Author_Institution :
University of Cambridge, Engineering Department, Cambridge, UK
Abstract :
For voiced speech, LPC coefficients obtained from sequential adaptation techniques are maximally perturbed roughly at the instant of glottal closure. Coefficient extraction at or immediately beyond this instant results in a poor vocal tract model estimate. A method is described to enhance the accuracy of the estimate by selecting coefficient vectors based on their time-domain convergence.
Keywords :
adaptive systems; filtering and prediction theory; signal processing; speech analysis and processing; LPC coefficients; coefficient extraction; instant of glottal closure; poor vocal tract model estimate; selecting coefficient vectors; selective time-domain coefficient extraction; sequential adaptation techniques; sequential linear prediction; time-domain convergence; voiced speech;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860320
