function [yn,W,en]=LMS(xn,dn,M,mu,itr)%LMS(Least Mean Squre)算法%输入参数:%xn 输入的信号序列 (列向量)%dn 所期望的响应序列 (列向量)%M 滤波器的阶数 (标量) 滤波器的阶数,就是指过滤谐波的次数,其阶数越高,滤波效果就越好%mu 收敛因子(步长) (标量) 要求大于0,小于xn的相关矩阵最大特征值...
The present invention relates to a fan filter unit with an active noise control function. The fan filter unit comprises: a fan housing having an air inlet formed on one surface; a blower fan installed inside the fan housing and discharging air to a side surface; and a filter installed in ...
Active noise control (ANC) is based on the principle of superposition of waves. It means that an algorithm is used to tune a secondary source to make an anti-noise with equal amplitude but opposite phase with the primary source. In this paper, a wavelet function and network (WAVENET) appro...
关键词: Active noise control 被引量: 33 摘要: An active noise control system for controlling noise propagated through a duct (1) comprises a first microphone (5) located to receive the propagated noise at a point in a plane perpendicular to the length of the duct. A loudspeaker (6) ...
研究点推荐 ACTIVE NOISE CONTROLLER AUTOMATICALLY EQUALIZING FUNCTION abnormality detection/switch control part 0关于我们 百度学术集成海量学术资源,融合人工智能、深度学习、大数据分析等技术,为科研工作者提供全面快捷的学术服务。在这里我们保持学习的态度,不忘初心,砥砺前行。了解更多>> 友情链接 联系我们 合作与...
关键词: active noise control feedback learning (artificial intelligence transfer functions Q-learning algorithm active noise control problem active noise controller feedback method multitones periodic noise primary transfer function 会议名称: Artificial Intelligence and Signal Processing (AISP), 2012 16th ...
A active noise control system having a digital signal processor programmed to function as adaptive digital filter with an output saturation control is described. The programmed adaptive filter has a specified maximum value for its output signal, above which the output signal becomes clipped and a con...
The remnant noise is then picked up by the error microphone (let us call this as e(n)) and is transferred to the ANC as a kind of feedback. Our primary goal of the system is to minimize e(n). Now the first question that arises is that a sound signal is a function of time...
A transfer function learned in a state in which the second noise control system is stopped is set in the auxiliary filter of the first noise control system, and a transfer function learned in a state in which the adaptive operation of the first noise control system is stopped is set in ...
Therefore, even a human head moves, a transfer function becomes invariable, sound elimination following the position of the human head becomes possible, and sound elimination in a wider range becomes possible without increasing number of the microphone or the secondary sound source unit 4. 展开 ...