基于MATLAB的自适应声学回音抵消器优化设计

Optimal Research of Self-Adaptive Acoustic Echo Canceller Based on MATLAB Design Software

随着通信技术的发展,声学回音抵消器在电话会议系统、视频会议系统等免持通话设备中得到了广泛应用。在分析和讨论了声学回音抵消器原理之后,详细研究了基于自适应滤波技术的声学回音抵消优化算法及其特性,特别是对声学回音返回损失增加度的影响。最后,基于MATLAB模拟测试分析了该频域优化算法对室内声学回音抵消的效果,模拟测试结果与理论分析预测吻合。

With the development of communication technology, Acoustic Echo Canceller （AEC） is widespread plied to the teleconferencing system. After the working principal of AEC is analyzed and discussed, we do some search on the optimal algorithms and its characteristics of AEC technology, especially effect on acoustic return ss enhancement. Finally, the simulation experiments in MATLAB to measure effect of frequency domain gorithms on room AEC are done. The results are well in agreement with the theoretical analysis.