摘要
本文介绍了一种基于嵌入式DSP的城市违章汽车鸣笛声实时定位系统的研究与实现。文中提出了汽车鸣笛声的特定识别算法,并改进了广义互相关算法来计算到达时延。系统利用到达时延和8个驻极体麦克风阵列的空间位置信息和估计出违章鸣笛车辆的具体位置,并在相应的视频监控设备中做出标记。该系统专用于城市交通中准确识别违章鸣笛的机动车辆。
This paper introduces the research, implementation real-time vehicle horn sound location system, which is based on embedded TMS320VC5502 DSP chip. A specific algorithm of vehicle horn recognition is proposed, and the Generalized Cross-Correlation time delay estimation method is improved to compute the time delay of arrival in this design. The system utilizes the time delays of arrival and the position of 8 electret microphones in the space to estimate the location of offending vehicle, and makes signs on the relative video inspector. The system is specially used in city＇s traffic to recognize and seize the illegal horn sound makers.
出处
《中国新通信》
2009年第1期64-67,共4页
China New Telecommunications
关键词
声音识别
时延估计
声源定位
嵌入式DSP
麦克风阵列
sound recognition, time delay estimation, sound source location, embedded DSP, microphone arrays
