Acoustic Echo Cancellation for Multiple Reproduction Channels: From First Principles to Real-Time Solutions
Acoustic Echo Cancellation for Multiple Reproduction Channels: From First Principles to Real-Time Solutions
复制标题
多个再现通道的声学回声消除：从第一原理到实时解决方案
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
H. Buchner
中科院分区：
文献类型：
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作者：
H. Buchner
多声道声学回声消除（MCAEC）是现代系统中需要实现免提和全双工通信以及多声道声音再现的一项关键技术。尽管回声消除的基本原理已经为人们所熟知了几十年，但多通道情况提出了一些额外的、根本不同的挑战。此外，在双通道情况和一般多通道情况之间甚至存在一些显著的差异，一般多通道情况在最近几年才被逐点地解决。该文致力于研究两个问题.一方面，本文在简要回顾了多通道声回波抵消问题之后，概述了如何根据一些基本原理来解决这一问题。从这个意义上说，本文首次将系统论、信息论、心理声学和波动物理学的思想结合在一起。在此基础上，本文介绍了近年来国内外在多媒体辅助电子商务领域的一些研究进展。由此，强调了在多于两个信道的情况下的重要问题。最后，作为一个展望，我们谈到了我们正在进行的工作，为大规模多声道声音再现，如波场合成。
Multichannel acoustic echo cancellation (MCAEC) is a key technology whenever hands-free and full-duplex communication in modern systems with multichannel sound reproduction is desired. Although the basic principle of echo cancellation has been well known for several decades, the multichannel case poses some additional and fundamentally different challenges. Moreover, there are even some notable differences between the two-channel case and the general multichannel case which has been addressed bit by bit only in recent years. The aim of this paper is twofold. On the one hand, after a brief review of the problem of multichannel acoustic echo cancellation, this paper gives an outline of how the problem may be tackled based on some fundamental principles. In this sense, the presentation in this paper brings together for the first time ideas from system theory, information theory, psychoacoustics, and also wave physics. Based on this framework, and as the other main contribution, we present in this paper some recent advances in the field of MCAEC. Thereby, important issues in the case of more than two channels are emphasized. Finally, as an outlook, we touch on our ongoing work towards MCAEC for massive multichannel sound reproduction, such as wave field synthesis.