Second European Conference on Speech Communication and Technology

Genova, Italy
September 24-26, 1991


A Vocoder Using High-Order LPC Filter With Very Few Non-Zero Coefficients

C. F. Chan, S. H. Leung

Department of Electronic Engineering, City Polytechnic of Hong Kong, Kowloon, Hong Kong

This paper introduces a new linear predictive modelling technique based on using a high-order LPC filter having only few non-zero coefficients. Efficient algorithms were developed to find the non-zero coefficients for the cases of transversal filter and lattice filter implementations. Coupling with multi-pulse analysis procedure for vocoding, the new modelling technique can produce good-quality synthetic speech at low data rates.

Full Paper

Bibliographic reference.  Chan, C. F. / Leung, S. H. (1991): "A vocoder using high-order LPC filter with very few non-zero coefficients", In EUROSPEECH-1991, 839-842.