Adaptive acoustic echo cancellation based on FIR and IIR filter banks

被引：0
|
作者：
Ansahl, T [1 ]
Varga, I [1 ]
Kremmer, I [1 ]
Xu, W [1 ]
机构：
[1] Siemens AG, Mobile Phones Dept, D-8000 Munich, Germany
来源：
ICASSP '99: 1999 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, PROCEEDINGS VOLS I-VI | 1999年
关键词：
D O I：
10.1109/ICASSP.1999.758423
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
In this paper we investigate various subband AEC systems in rear handsfree situation, including FIR and IIR analysis and synthesis QMF filterbanks in polyphase structure. The adaptation in the subbands is performed by the Affine Projection Algorithm in comparison to the NLMS algorithm. The IIR filters are superior to FIR filters in the sense that they lead to tow signal delay and sharp frequency separation. Furthermore the computational complexity is greatly reduced by the use of IIR filters. The results show that splitting the signal into more subbands has advantages. Both wideband and narrowband speech signals have been evaluated.
引用
收藏
页码：2403 / 2406
页数：4
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