Numerical properties of the DCD-RLS algorithm for stereo acoustic echo cancellation

Author

Stanciu, Corneliu ; Anghel, Costin

Author_Institution

Dept. of Telecommun., Univ. Politeh. of Bucharest, Bucharest, Romania

fYear

2014

fDate

29-31 May 2014

Firstpage

1

Lastpage

4

Abstract

Modern teleconferencing systems have been developed in recent years to use multiple acoustic channels (stereo communication). This feature improves the quality of communication (e.g., in terms of spatial localization), but the classic problem of the acoustic echo cancellation becomes more complicated. In this context, the dichotomous coordinate descent (DCD) - recursive least-squares (RLS) algorithm can be an attractive choice for hardware implementation. In this paper, the numerical properties of the DCD-RLS parameters will be analyzed, related to finite precision implementations.

Keywords

acoustic signal processing; echo suppression; least squares approximations; teleconferencing; DCD; DCD-RLS algorithm; RLS algorithm; dichotomous coordinate descent; multiple acoustic channels; recursive least-squares algorithm; stereo acoustic echo cancellation; teleconferencing system; Adaptive filters; Algorithm design and analysis; Echo cancellers; Hardware; Signal processing algorithms; Vectors; dichotomous coordinate descent (DCD); finite precision; recursive least-squares (RLS); stereophonic acoustic echo cancellation (SAEC); widely linear (WL);

fLanguage

English

Publisher

ieee

Conference_Titel

Communications (COMM), 2014 10th International Conference on

Conference_Location

Bucharest

Type

conf

DOI

10.1109/ICComm.2014.6866743

Filename

6866743