摘要
在有源噪声控制领域,为减少多通道控制系统的计算载荷,一种可行的方法是使用分布式控制,即将原有系统分为多个子系统,以减少每个控制器的通道数。然而各子系统之间不可避免地存在相互干扰,使得系统收敛速度减慢,消声效果降低。针对此局限性,对经典的多通道FXLMS算法进行了修正,通过抑制各子系统之间的相互干扰,提高了算法的收敛速度,改善了系统的性能。实验结果表明此算法是可行和有效的。
In the field of active noise control, an active noise control system with a mount of channels, which means nee- ding a large amount of computing power, can be divided into several sub - systems in order to reduce the channels handled by the controller to meet the computing power demand. But there are unavoidable interferences between the sub - systems, which may cause slow convergence speed and degrade the performance of the active noise control system. To overcome this limitation, the multi - channel FXLMS algorithms used by sub - systems are modified, in order to improve the performance of the system through reducing the interferences between the sub - systems. The experimental results show that this method is effective to noise reduction.
出处
《电声技术》
2012年第6期59-62,共4页
Audio Engineering
关键词
声学
分布控制
自适应滤波
噪声治理
acoustics
decentralized control
adaptive filtering
noise control
