TDOA of Single Sound Source Localization Based on Quaternary Cross Microphone Array

Sound source localization systems in three dimensions have a wide range of applications in the field of intelligent robotics, Time difference of arrival method (TDOA) uses the time delay from a single source to the microphone array combined with geometric relationships for localization. This method is computationally small and easy to implement. However, TDOA is applicable to far-field signals. The localization accuracy will be significantly decreased when the single source signal is closer to the microphone array. The paper proposes a single-source localization method to obtain the radius parameter by the predicted coordinates of the sound source. MATLAB is used to simulate the single-source localization based on the quaternary cross microphone array, and the simulation results show the method can significantly improve the localization accuracy of single-source.