有源降噪头靠中一种分布式虚拟传声器优化方法  

A distributed remote microphone technique optimize method for active headrests

作　　者：张锦惠 张芳杰 徐健[1,2] 郑成诗 李晓东[1,2] ZHANG Jinhui;ZHANG Fangjie;XU Jian;ZHENG Chengshi;LI Xiaodong(Key Laboratory of Noise and Vibration Research,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院噪声与振动重点实验室(声学研究所),北京100190 [2]中国科学院大学,北京100049

出　　处：《应用声学》2023年第3期585-595,共11页Journal of Applied Acoustics

摘　　要：有源降噪头靠系统中,远程虚拟传声器技术能够解决控制点处与误差传声器处降噪量不匹配的问题。在实际应用中,多通道虚拟传声器技术存在收敛速度慢和运算复杂度高等问题。针对这个问题,该文通过重新设计远程虚拟传声技术的离线优化过程,提出一种分布式远程虚拟传声器技术优化方法。该方法将虚拟次级通路矩阵做对角化限制,同时对观测传递函数矩阵进行联合寻优,以实现一种分布式的更新算法。有源降噪头靠实验结果表明,所提算法能够有效降低远程虚拟传声器技术算法的运算复杂度,并且提升了算法的收敛速度。In active headrests systems,multichannel remote microphone technique can move the quiet zone from the physical microphones to the ear of the listener.However,its computational complexity can be high,and the convergence speed can be slow in real applications.To solve these problems,this paper proposes a distributed design method for multichannel remote microphone technique by redesigning the preliminary optimization procedure of the multichannel remote microphone technique.In this algorithm,the transfer function matrix of virtual secondary paths is constraint to be diagonal,and the observe transfer matrix is jointly optimized.Experiments results show that the proposed algorithm not only reduces the computational complexity,but also improves the convergence behavior.

关 键 词：有源降噪头靠 远程虚拟传声器技术 分布式 

分 类 号：O429[理学—声学]