Introducing Feedback Mechanism to Sound Source Location
In recent years,the demand for real-time sound source localization(SSL)is increasing,and real-time SSL require accurate localization while collecting short audio.Therefore,a universal feedback mechanism is introduced into the time delay estimation algorithm to improve the accuracy of SSL based on the geometric distribution of the microphone array.Firstly,a simulation localization experiment is carried out in a two-dimensional plane using a simulation program written by Matlab,and the localization results before and after the introduction of the feedback mechanism are compared.The results show that after introducing the feedback mechanism,the noise resistance,reverberation resistance and stability of the SSL algorithm are all improved with different degrees.Then a set of SSL equipment is built for practical testing,and the deviation of most of the estimation values and actual value is within 1 cm.We accomplished centimeter-level SSL,which provides more processing in noisy fields,such as achieving higher performance in noise reduction.
万方数据
维普
