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[1]刘霞,吴崧.牛顿迭代算法在声场定位中的应用[J].武汉工程大学学报,2014,(07):64-67.[doi:103969/jissn16742869201407013]
　LIU Xia,WU Song.Sound field positioning using Newton iterative algorithm[J].Journal of Wuhan Institute of Technology,2014,(07):64-67.[doi:103969/jissn16742869201407013]
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牛顿迭代算法在声场定位中的应用(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2014年07期
页码:
64-67
栏目:
机电与信息工程
出版日期:
2014-07-31

文章信息/Info

Title:
Sound field positioning using Newton iterative algorithm
文章编号:
16742869(2014)07006404
作者:
刘霞; 吴崧
武汉工程大学电气信息学院，湖北 武汉 430205
Author(s):
LIU Xia;  WU Song
School of Electrical and Information Engineering, Wuhan Institute of Technology, Wuhan 430205，China
关键词:
声场定位;  时间延时差;  牛顿迭代
Keywords:
sound field positioning;  time difference of arrival;  Newton iteration
分类号:
TP311
DOI:
103969/jissn16742869201407013
文献标志码:
A
摘要:
在声场定位系统中，发声系统和拾音系统之间往往没有直接联系，为了能精确判断出声源所处的位置，设计了一种由4个拾音器和1个单片机控制的声场定位系统.声源发出特定频率的声音信号，系统通过3个拾音器接收到声音信号，经过处理计算得到时间延时差.利用牛顿迭代算法，将时间延时差代入方程进行迭代计算，即能精确计算出声源具体位置，第4个拾音器用于校准所得结果.采用该算法只需最多4次迭代运算就能计算出声源位置坐标.利用上位机软件模拟测试算法，并在实物系统中测试，验证了牛顿迭代算法在声场定位中的可行性和精确性.该声场定位系统位置坐标可在液晶屏上显示，可实时描绘出声源移动轨迹.
Abstract:
A novel measuring system with four pickups and a microcontrol unit was presented to localize a certain acoustic source as the sound sources do not link directly to acoustic pickups in sound field positioning systems. Three of the four pickups were used to capture the acoustic signals emitted by a source with a certain frequency, and the time differences of arrival between any two of three arrival signals were processed using Newton iterative algorithm to ascertain the source. The result was calibrated using the rest pickup. At most four iterations were needed to determine where the source was. The feasibility and accuracy of the algorithm were verified respectively in simulation environment and practical systems while the coordinates and movements of the source were displayed in real time.

参考文献/References:

［1］吴晓，靳世久，李一博.基于麦克风阵列声音信号定位方法的研究［J］.传感器技术学报，2010，5(23):682684. WU Xiao， JIN Shijiu， LI Yibo.Sound source localization based on microphone arrays［J］.Chinese Journal of Sensors and Actuators，2010，5(23):682684.(in Chinese)［2］ADAMY D. Radar warning receivers: the digital revolution［J］. Electronics Defense，2000 (6):4549.［3］肖峰，李惠昌. 声，武器和测量［M］. 北京：国防工业出版社，2002.XIAO Feng，LI Huichang. Sound， weapons and measurement［M］.Beijing: National Defence Industry Press，2002.(in Chinese)［4］陈益如，王博，邬杨波.基于声音导引的声源定位系统设计［J］.工业控制计算机，2010，23(10):101104.CHENG Yiru， WANG Bo， WU Yangbo. Design of sound source localization system based on voice guidance ［J］. The Industrial Control Computer，2010，23(10):101104. ［5］徐瑞民.二元非线性方程组求根的牛顿迭代法［J］.山东轻工业学院学报，2009，23(4):8091. XU Ruimin. Newton’s method fourth nonlinear function of two independent variables［J］.Journal of Shandong Institute of Light Industry，2009，23(4):8091.(in Chinese)

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备注/Memo

备注/Memo:
收稿日期：20140513作者简介：刘霞（1974），女，湖北阳新人，工程师.研究方向：自动化.
更新日期/Last Update: 2014-08-20