Subband adaptive filters with pre-whitening scheme for acoustic echo cancellation

Authors:
Hun Choi;Jae Won Suh;Hyeon-Deok Bae
Affiliations:
Dep. of Electronic Engineering, Chungbuk National University, Korea;Dep. of Electronic Engineering, Chungbuk National University, Korea;Dep. of Electronic Engineering, Chungbuk National University, Korea
Venue:
KES'06 Proceedings of the 10th international conference on Knowledge-Based Intelligent Information and Engineering Systems - Volume Part I
Year:
2006

Citing 3
Cited 0

Multirate systems and filter banks

Multirate systems and filter banks
Convergence analysis of alias-free subband adaptive filters based on a frequency domain technique

IEEE Transactions on Signal Processing
A new approach to subband adaptive filtering

IEEE Transactions on Signal Processing

Quantified Score

Hi-index	0.00

Visualization

Abstract

The signal-decorrelating properties of the AP algorithm and the subband filtering improve the convergence speed of the conventional AP adaptive filter. In this paper, a new subband adaptive filtering with pre-whitening scheme for acoustic echo cancellation is presented. The proposed algorithm provides fast convergence and reduced computational complexity by combining merits of the affine projection (AP) algorithm and the subband filtering. The projection order of AP adaptive filter can be decreased by subband partitioning with the polyphase decomposition and the noble identity. The decreased projection order reduces the computational complexity in the proposed algorithm. Computer simulations illustrate the convergence rate improvements and the computational efficiency of the proposed algorithm and show the validity of the theoretical results.