Multiple sound source tracking using low complexity directional estimation

摘要

In this paper, a method for sound source tracking by two microphones is studied. Then, it is often assumed to be implemented on DSP (Digital Signal Processor). In this case, it is required to reduce the calculation cost. In our method, a sequential updating histogram based on the instantaneous phase difference is used for estimating the sound source direction. Moreover, for attaining more tracking accuracy, the microphone width is expanded for enhancing a spatial resolution. Several experimental results in a real environment are shown to present the effectiveness of the our method.