Real-time Blind Source Separation and Doa Estimation Using Small 3-d Microphone Array

We present a prototype system for real-time blind source separation (BSS) and directions of arrival (DOA) estimation. Our system uses a small three-dimensional array with 8 microphones and has the ability to separate signals distributed in threedimensional space. The mixed signals observed by the microphone array are processed by Independent Component Analysis (ICA) in the frequency domain. The system estimates DOA of the source signals as a by-product of the separation process. In our previous work [1], we presented a batch-type BSS of recorded signals. In contrast, this prototype system performs a real-time separation.