窄带噪声主动控制系统的FPGA实现

发布时间：2018-04-04 03:04

  本文选题：声学　切入点：窄带ANC　出处：《电子技术应用》2017年09期

【摘要】：基于FPGA的窄带噪声主动控制系统,采用并行计算能力强的FPGA作为核心处理器,能够应对多频率、多通道情况下计算量成倍增加的情况;系统实现了并联结构的窄带前馈FxLMS算法,可以针对噪声中的不同频率分量分别进行主动控制。并联结构算法对于乘法器资源的消耗极大,因此提出了一种乘法器资源复用技术。实现三通道的算法所用的乘法器资源降低到原来的33.3%,极大降低了系统成本,便于该系统的广泛应用。
[Abstract]:In the narrow band noise active control system based on FPGA, the FPGA with strong parallel computing power is used as the core processor, which can deal with the multi-frequency and multi-channel situation, and the system realizes the narrowband feedforward FxLMS algorithm with parallel structure.Active control can be carried out for different frequency components in noise.Parallel structure algorithm consumes a lot of multiplier resources, so a multiplier resource reuse technique is proposed.The multiplier resource used to realize the three-channel algorithm is reduced to the original 33.3, which greatly reduces the system cost and facilitates the wide application of the system.
【作者单位】： 清华大学深圳研究生院生物医学工程研究中心;
【基金】：国家自然科学基金(31271056) 深圳市科技研发资金资助项目(JCY2014041562543023,JCYJ20160324163759208)
【分类号】：TB535;TN791
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本文编号：1708087