Study and Design of the Base Station Acoustic Source Location System

When an acoustic source makes a sound, during the propagation of sound signals through the air, the frequency and intensity of sound waves will be attenuated with the increase of propagation distance, and the speed of the sound is also affected by other factors as temperature. In this study, three acoustic receiving base stations have been adopted and the acoustic wave receiving circuits have been designed. The circuits of the three stations should have the same input-output characteristics when they receive the same acoustic signals. According to the time difference of acquired signals and under the same signals time width, the error compensation has been made for the base stations, the accurate positioning of the sound source has been achieved and the accuracy of positioning has been analyzed.