The Design of Sound Source Location and Tracking System Based on TDOA

In this scheme, STM32F407 is used to process the information, and a system is designed to detect and track the short-range acoustic signal source continuously. After a detailed analysis of the hardware circuit, a complete system circuit design and software flow chart are presented. In this design through the single-chip drive passive buzzer sound, silicon-wheat audio signal sampling, silicon-wheat data collected by the single-chip computer data processing, based on the principle Of Time Difference of Arrival (TDOA), the distance and angle between the sound source and silicon malt are determined. The step motor is driven to rotate the laser pen to emit light spot to precisely locate the sound source and continuously track it. The system integrates computer hardware, software and sensors to enable intelligent instruments to locate and track sounds similar to the human auditory system, and to integrate with other systems, let mankind enter a new era of interconnectedness as soon as possible.