Title :
A comparison of prewhitening techniques for subband acoustic echo cancellation
Author :
Phillips, D.K. ; Cowan, C.F.N.
Author_Institution :
Dept. of Electron. Eng., Loughborough Univ. of Technol., UK
Abstract :
This paper is a comparison of two new subband prewhitening algorithms based on forward prediction error filters under development at Loughborough for improving the adaptation performance of multirate acoustic echo cancellers in hands-free telephony. The subband decomposition is provided by the novel polyphase all-pass QMF filterbanks developed at Imperial College as part of the FREETEL project
Keywords :
echo suppression; FREETEL project; forward prediction error filters; hands-free telephony; multirate acoustic echo cancellers; polyphase all-pass QMF filterbanks; prewhitening techniques; subband acoustic echo cancellation; subband decomposition; subband prewhitening algorithms;
Conference_Titel :
Digital and Analogue Filters and Filtering Systems (Digest No. 1996/238), IEE Colloquium on
Conference_Location :
London
DOI :
10.1049/ic:19961271
