Title :
Improved postfiltering technique for block quantisation of speech
Author :
Kaouri, H.A. ; McCanny, J.V.
Author_Institution :
Queen´s University of Belfast, Department of Electrical & Electronic Engineering, Belfast, UK
Abstract :
A modified comb filtering technique is proposed which can be used to reduce framing noise generated when speech signals are transform-coded or vector-quantised. Application of this filter to 9.6 kbit/s speech in a vector transform coder has been found to significantly improve the perceptual quality of the coded speech.
Keywords :
encoding; filtering and prediction theory; interference suppression; speech analysis and processing; 9.6 kbit/s; block quantisation; encoding; framing noise; modified comb filtering technique; noise reduction; postfiltering technique; speech signals; vector transform coder;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870892
