考虑特征向量约束的低频声信号声源定位系统

A low⁃frequency acoustic signal source localization system considering feature vector constraints

低频信号在传输过程中,容易受到环境噪声的干扰,导致信号强度降低,从而影响声源定位的精度。为了提升低频声信号声源定位能力,提出一种考虑特征向量约束的低频声信号声源定位系统。通过MEMS声传感器采集低频声信号,对其进行去噪处理,并传输至低频声信号声源定位模块;采用考虑特征向量约束的低频声信号声源定位方法实现对低频声信号声源定位。实验结果表明:所提系统的低频声信号声源定位与实际位置坐标的误差小,说明该系统的定位方法性能优良,定位精度较高,能够提升低频声信号声源定位能力。

Low frequency signals are prone to interference from environmental noise during transmission,resulting in a decrease in signal strength and affecting the accuracy of sound source localization.In order to improve the localization ability of low‐frequency acoustic signals,a low‐frequency acoustic signal localization system considering feature vector constraints is proposed.The MEMS acoustic sensor is used to collect the low‐frequency acoustic signals,denoise them,and then transmit them to the low‐frequency acoustic signal source localization module.A low‐frequency acoustic signal source localization method considering feature vector constraints is used to achieve low‐frequency acoustic signal source localization.The experimental results show that the error between the low‐frequency acoustic signal source localization of the system and the actual position coordinates is small,indicating that the positioning method of the system has excellent performance,high positioning accuracy,and can improve the low‐frequency acoustic signal source localization ability.