[1]郑毅豪,巩朋成,杜帮华,等.圆形差分麦克风阵列的二阶波束形成器设计[J].湖北工业大学学报,2020,(2):42-47.
　ZHENG Yihao,GONG Pengcheng,DU Banghua,et al.Second-order Beamformer Design of Circular Differential Microphone Array[J].,2020,(2):42-47.
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圆形差分麦克风阵列的二阶波束形成器设计()
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《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
期数:
2020年第2期
页码:
42-47
栏目:
出版日期:
2020-04-30

文章信息/Info

Title:
Second-order Beamformer Design of Circular Differential Microphone Array
文章编号:
1003-4684(2020)02-0042-06
作者:
郑毅豪1;  巩朋成1; 2;  杜帮华1;  张正文1
1 湖北工业大学电气与电子工程学院， 湖北 武汉 430068;
2 电子科技大学信息与通信工程学院, 四川 成都 611731
Author(s):
ZHENG Yihao1;  GONG Pengcheng2;  DU Banghua1;  ZHANG Zhengwen1
1 School of Electrical and Electronic Engineering, Hubei Univ. of Tech., Wuhan 430068,China;
2 School of Information and Communication Engineering,University of Electronic Science and Technology of China, Chengdu, Sichuan, China
关键词:
差分麦克风阵列;  波束形成器;  白噪增益;  方向图
Keywords:
differential microphone array;  beamformer;  white noise gain;  directivity patter
分类号:
TN912.3
文献标志码:
A
摘要:
针对二阶差分阵(DMA)在信号频率较低时白噪增益异常问题，提出一种基于二阶圆形差分阵列进行白噪增益最大化的波束形成器设计方法。该波束形成器主要是由L阶差分阵列的一阶输出的权值函数h′DMA和WNG情况下的二阶输出的权值函数h′MWNG构成。第一阶段滤波器确定期望波束图的角度，从而在DMA阵列的波束方向上加入空值；第二阶段滤波器解决第一阶段因为白噪异常而导致的系统冗余，从而导致阵列在低频时白噪异常的问题，以解决DMA在低频时WNG异常的问题。仿真结果表明，在相同的条件下，该方法不仅解决了白噪增益异常的问题而且得到的波束图具有更低的旁瓣级。
Abstract:
Aiming at the problem of abnormal white noise gain when the signal frequency is low after the second-order response of the beamformer of differential array (DMA), the design of the maximum white noise gain beamformer is studied, and a white noise based on second-order differential circular array is proposed. The design method of maximizing is gained. The model of differential microphone is analyzed, and the multi-stage cascaded filter model is equivalent to a linear model. The reason of the white noise gain of the differential array is obtained by analyzing the linear model. Then a stepwise solution based on the maximum white noise gain is proposed. Different from the traditional method of solving second-order filter coefficients, this paper splits the second-order filter into two parts to solve the filter coefficients, thus solving the white noise anomaly caused by the low frequency of the array. The simulation results show that under the same conditions, the proposed method not only solves the problem of white noise gain anomaly but also has a lower sidelobe level.

参考文献/References:

[1]雍雅琴, 沙洪, 李鹏. 数字助听器中广义旁瓣消除器的仿真研究[J]. 医疗卫生装备, 2013, 34(5):13-15.
[2]董鹏宇, 林涛. 一种基于波束形成与信号子空间滤波器的多麦克风噪声消除方法[C]昆明 第二十七届中国控制会议论文集, 2008:1423-1426.
[3]曾辉. 麦克风阵列时间延迟估计和语音信号增强的研究[D]. 北京：中国科学院声学研究所, 2005.
[4]谢建平, 王瑞, 何熊熊, 等. 利用导向向量旋转和联合迭代优化的自适应波束形成算法研究[J]. 声学学报, 2016(3):343-352.
[5]Higuchi T, Ito N, Yoshioka T, et al. Robust MVDR beamforming using time-frequency masks for online/offline ASR in noise[C] IEEE International Conference on Acoustics. IEEE, 2016:5210-5214.
[6]文小方, 张玲华, 高婉贞. 基于小波去噪的自适应波束形成算法研究[J]. 计算机技术与发展, 2017(6):169-172.
[7]杨立春, 钱沄涛. 面向二元麦克风小阵列改进的广义旁瓣抵消器语音增强算法[J]. 信号处理, 2012, 28(10);1379-1385.
[8]马子骥, 余旭, 倪忠. 基于CTF-GSC和后置滤波的麦克风阵列语音增强[J]. 西北大学学报(自然科学版), 2017(06):52-60.
[9]Elko G, Pong A. A steerable and variable first-order differential microphone array[C] IEEE International Conference on Acoustics. IEEE Computer Society, 1997:223-226.
[10] Benesty J, Chen J. Study and design of differential microphone arrays[J]. Springer Topics in Signal Processing, 2013, 6:4-15.
[11] Luo F L , Yang J , Pavlovic C , et al. Adaptive null-forming scheme in digital hearing aids[J]. IEEE Transactions on Signal Processing, 2002, 50(7):1583-1590.
[12] Yaakov Buchris, Israel cohen and jacob benesty, frequency-domain design of asymmetric circular differential microphone arrays[C]. IEEE 2018（1）:760-773.
[13] Chen J, Benesty J, Pan C. On the design and implementation of linear differential microphone arrays[J]. The Journal of the Acoustical Society of America, 2014, 136(6):3097-3113.
[14] Buchris Y, Cohen I, Benesty J. Asymmetric beampatterns with circular differential microphone arrays[C]. Applications of Signal Processing to Audio & Acoustics. IEEE, 2017.10:190-194.
[15] Pan C, Chen J, Benesty J. Reduced-order robust superdirective beamforming with uniform linear microphone arrays[J]. IEEE/ACM Transactions on Audio, Speech, and Language Processing, 2016.5:1548-1559
[16] Wu X , Chen H . Design and analysis of second-order steerable differential microphone arrays[C]// 2017 25th European Signal Processing Conference (EUSIPCO). IEEE, 2017:1425-1429.

备注/Memo

备注/Memo:
［收稿日期］ 2019-09-30
［第一作者］ 郑毅豪(1995-)， 男， 湖北石首人，湖北工业大学硕士研究生，研究方向为麦克风阵列处理，语音信号的波束形成
［通信作者］ 巩朋成(1982-)， 男， 甘肃甘谷人，湖北工业大学讲师，电子科技大学博士后，研究方向为MIMO雷达，频控阵列信号处理以及波形设计等
更新日期/Last Update: 2020-05-13