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针对具有特定频率的声源进行实时定位研究,根据声源特点,为提高定位实时性,采用三维空间降维处理和麦克风传感器阵列L型分布方式来简化声源模型,并采用时延估计方法(Time Delay Estimation,TDE)进行实时声源定位。给出几何公式求解法和基于LabVIEW的查表逼近法两种方案,进行了理论分析和方案对比,最后在飞思卡尔公司的MC9S12XS128微处理器为控制核心的硬件实验平台上进行定位精度和实时性对比实验,验证了两种方案的有效性。
According to the characteristics of the sound source, in order to improve the real-time performance of positioning, a three-dimensional space dimension reduction processing and a L-shaped distribution of microphone sensor array are adopted to simplify the sound source model. The time delay estimation method ( Time Delay Estimation, TDE) for real-time sound source localization. Given the geometric formula solving method and table lookup approach based on LabVIEW two programs, the theoretical analysis and program comparison, and finally in Freescale’s MC9S12XS128 microprocessor as the control center hardware experimental platform for positioning accuracy and real-time The sexual contrast experiment verifies the validity of the two schemes.