Intermediate complexity adaptive filters in acoustic echo cancellation

Author

Gudvangen, S. ; Flockton, S.J.

Author_Institution

R. Holloway & Bedford Coll., London Univ., Egham, UK

fYear

1993

fDate

34016

Firstpage

42491

Lastpage

42494

Abstract

The authors report on recent research into the use of so-called fast Newton transversal filters (FNTF) for acoustic echo cancellation. FNTFs are fast transversal filters (FTF) with reduced order predictors. By varying the order of the predictor part, adaptive algorithms extending from low complexity/slowly converging NLMS to high complexity/rapidly converging FTF algorithms are possible. This class of adaptive algorithms thus allows a tradeoff to be made between complexity and speed of convergence

Keywords

adaptive filters; digital filters; echo suppression; filtering and prediction theory; acoustic echo cancellation; adaptive algorithms; complexity; convergence speed; fast Newton transversal filters; fast transversal filters; prediction filters; research;

fLanguage

English

Publisher

iet

Conference_Titel

New Directions in Adaptive Signal Processing, IEE Colloquium on

Conference_Location

London

Type

conf

Filename

217919

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=284054