Digital Adaptive Echo-Canceller for Room Acoustics Improvement

被引：4

作者：

Topa, Marina Dana ^{[1
]}

Muresan, Irina ^{[1
]}

Kirei, Botond Sandor ^{[1
]}

Homana, Ioana ^{[1
]}

机构：

[1] Tech Univ Cluj Napoca, RO-400020 Cluj Napoca, Romania

来源：

ADVANCES IN ELECTRICAL AND COMPUTER ENGINEERING | 2010年 / 10卷 / 01期

关键词：

adaptive system identification; echo-canceller; reverberation; room acoustics; sub-band filtering;

D O I：

10.4316/AECE.2010.01008

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

This paper presents a method to cancel the echoes generated by reflections in a room. The starting point is the full-band adaptive system identification method, where the unknown system is the room, providing several reflections of the sound. A sub-band filtering method is proposed and all the aspects regarding the filter banks, the structure, the number of sub-bands and the order of the required filters are analyzed. The performance is studied with respect to the provided error and the echo return loss enhancement. The asymmetric structure sub-band filtering offers a better performance than the full-band implementation. Increasing the number of sub-bands will also enhance the performance of the system.

引用

页码：50 / 53

页数：4