摘要声音信号是包含信息量最多的信号之一且传播媒介多种多样分布非常广泛获取也比较方便。同时声音也是人们交流最基本最有效的方式。声音是人类常用的工具，是传递和获取信息中非常重要的一种。不同物体往往发出自己特有的声音，而根据物体发出的声音，就可以判断出物体的方位[1]。现在，人类已经进入信息化时代，声源定位技术的研究，使人们能更加有效地产生、获取和应用处理声音信息，这对于当今社会的发展具有十分重要的意义。因此本文系统的研究了基于麦克风阵列的声源定位方法，主要做了一下几方面的工作：67664

首先，充分了解关于麦克风场模型有关声音信号的相关理论知识，包括声源信号和噪声信号的产生原因及理论处理办法，远场和近场模型的区别与选取，麦克风定位阵列结构的选择与实现办法。

其次，为了更好地了解麦克风阵列延时定位估计算法，将国内外现有的时延估计法作出分类与区别，重点介绍了两种时延估计算法，分别是：广义互相关延时估计法和自适应时延估计法。

最后对平面四元十字阵的算法进行了推导，对算法的定向精度进行了分析，并在MATLAB平台上对该算法进行了仿真实验。

毕业论文关键词：麦克风阵列 声源定位 时延估计 平面四元十字阵 

    毕业设计说明书（论文）外文摘要

Title   Sound source localization based on microphone array                     

Abstract

Voice signal is one of the signals contain most information and various media distribution is very widely available and more convenient. Sound at the same time is also the most fundamental and most effective way of people communication. Sound is a commonly used tools, human is very important in transfer and access to information. Different objects tend to make their own special sound, and according to the voice of the object, you can determine the object's orientation[1]. Now, mankind has entered the information age, of sound source localization technology research, and makes people to be able to more effectively create, access and application processing sound information, it is of great significance in the development of today's society. So this article system of sound source localization method based on microphone array is studied and made a few main aspects of work:

    First, fully understand about the microphone acoustic signal game model of relevant theoretical knowledge, including the source of signal and noise signal causes and treatment method of the theory, the far field and near field models of distinction and selection, the choice of the microphone array structure and implementation method.

    Secondly, in order to gain a better understanding of the microphone array delay location estimation algorithm, the time delay estimation method of existing at home and abroad to make classification and distinction, introduced two kinds of time delay estimation algorithm, respectively is: the generalized cross-correlation time delay estimation method and adaptive time delay estimation method.

    Finally For plane quaternary cross array algorithm was deduced, the orientation precision of the algorithm are analyzed, and the algorithm are simulated on MATLAB platform.

Keywords  Microphone Array  Sound Source Localization  Time Delay Estimation  Plane Quaternary Cross Array

                         目  次

1 绪论 1

1.1 麦克风阵列简述