本文選題：聲學(xué)　切入點(diǎn)：窄帶ANC　出處：《電子技術(shù)應(yīng)用》2017年09期

【摘要】：基于FPGA的窄帶噪聲主動(dòng)控制系統(tǒng),采用并行計(jì)算能力強(qiáng)的FPGA作為核心處理器,能夠應(yīng)對(duì)多頻率、多通道情況下計(jì)算量成倍增加的情況;系統(tǒng)實(shí)現(xiàn)了并聯(lián)結(jié)構(gòu)的窄帶前饋FxLMS算法,可以針對(duì)噪聲中的不同頻率分量分別進(jìn)行主動(dòng)控制。并聯(lián)結(jié)構(gòu)算法對(duì)于乘法器資源的消耗極大,因此提出了一種乘法器資源復(fù)用技術(shù)。實(shí)現(xiàn)三通道的算法所用的乘法器資源降低到原來(lái)的33.3%,極大降低了系統(tǒng)成本,便于該系統(tǒng)的廣泛應(yīng)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.
【作者單位】： 清華大學(xué)深圳研究生院生物醫(yī)學(xué)工程研究中心;
【基金】：國(guó)家自然科學(xué)基金(31271056) 深圳市科技研發(fā)資金資助項(xiàng)目(JCY2014041562543023,JCYJ20160324163759208)
【分類號(hào)】：TB535;TN791
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本文編號(hào)：1708087