基于半球型麦克风阵列的点声源定位系统智能检测前端设计与实现

摘要

本文系统阐述了自行研发的半球型麦克风阵列的点声源定位系统智能检测前端的设计与实现.本系统以STM32单片机为核心、以半球形麦克风阵列为声源检测单元、与信号调理模块及数据传输模块共同构建一个智能检测前端,针对点声源以不同的角度和方位同步实时多点采集噪声信息,并对多点信号同步归一化处理.经过测试本智能检测前端噪声分辨率0.1 dB.%The front end design and implementation of the intelligent point sound source localization system based on the hemispherical microphone array which is developed independently is showed in this paper. The system consists of the STM32 MCU as the core , a hemispherical microphone array as the sound source detection unit, and the signal conditioning module and data transmission module. The noise information coming from a point sound source is collected by the system in different angle and azimuth synchronously in real-time, and the signals from different detection units are normalized in the system. After testing, the intelligent detection front end system shows a noise detection resolution as low as 0.1dB.