| Paper: | SAM-L2.2 | ||
| Session: | Microphone Array Processing | ||
| Time: | Wednesday, May 17, 16:50 - 17:10 | ||
| Presentation: | Lecture | ||
| Topic: | Sensor Array and Multichannel Signal Processing: Source localization, separation, classification, and tracking | ||
| Title: | Direction of Arrival Estimation for Multiple Speakers using Time-Frequency Orthogonal Signal Separation | ||
| Authors: | Mikael Swartling, Nedelko Grbic, Ingvar Claesson, Blekinge Institute of Technology, Sweden | ||
| Abstract: | This paper presents a new approach for multiple speaker DOA estimation using an array of microphones. The method relies on the fact that multiple independent speakers have a small overlap in the time-frequency domain, i.e. the individual signals are almost W-disjoint orthogonal. By introducing a time-frequency mask and by continuously track the set of time-frequency points corresponding to each individual speech signal, a single source DOA estimation algorithm is used to find the DOA for each separated signal. This approach does not limit the solution to cases where the number of sensors exceeds the number of sources. Real room recordings are used to evaluate the performance of the method where source movements are also included. | ||
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