二维声源定位技术研究-大学生毕业论文（设计）.docVIP

摘 要 Abstract Identify a sound source location in space is an interesting research, has a broad application prospect in the future can be widely used in all aspects of the social production and life. Sound source localization estimation algorithm research is the key content in sound source localization technology. And of sound source localization based on acoustic sensor technology to be able to pick up the belt noise signal spatial filtering and de-noising processing, effectively improves the performance of the beamformer system to some extent. Beamformer is determined by measuring the sound coming from an object to locate objects, and the use of sonar, radar, wireless positioning method is different, the former source is normal voice, broadband signals, while the latter source is a narrowband signal. According to characteristics of voice signal, people put forward different sound source localization algorithm, but because of signal quality, noise and reverberation, make existing positioning accuracy of sound source localization algorithm is low. In addition, the existing sound source localization method computational cost is larger, hard to real-time processing. To solve these problems, this paper systematically studied the method of sound source localization based on microphone array, mainly done the following work: Firstly,the microphone array and its research present situation has carried on the overall overview, discussed the problem of sound source localization based on microphone array, and focuses on analyzing the particularity of microphone array signal processing and reverberation of causes and effects. The second,sums up and compares the advantages and disadvantages of various kinds of sound source localization based on microphone array method. Finally analyzed based on time delay estimation (ITD) and intensity difference (IID) of the sound source locating method. Key words: Microphone Array; Sound Source Localization; ITD; IID; Matlab 目录 1 绪 论 1 1.1