| Title | : | Real-time microphone selection in noisy reverberant environments for teleconferencing systems |
| Speaker | : | Israel Cohen (Technion - Israel Institute of Technology, Haifa, Israel) |
| Details | : | Wed, 13 Jan, 2016 2:30 PM @ BSB 361 |
| Abstract: | : | In a teleconferencing application, it is sometimes desired to use more than one microphone for audio pickup in order to cover larger room setting. A major challenge is to monitor the perceived quality of each microphone signal and select, at any given point in time, the microphone with the best reception. In this talk, I will present a real-time system that comprises a few microphone clusters and a main audio unit to identify comparative features of output signals for each of the microphone clusters. The microphone selection contains two stages. The first stage is local: for each microphone cluster we compute some features of the local signals. The second stage is global: we select the least reverberant signal based on the features of the local signals. We show that local power and local power-ratio are reliable attributes which are sufficient for selecting at each time-frequency bin the microphone with the best reception amongst randomly placed microphones. Biography: Professor Cohen is a Professor of electrical engineering at the Technion - Israel Institute of Technology, Haifa, Israel, a member of the IEEE Audio and Acoustic Signal Processing Technical Committee and the IEEE Speech and Language Processing Technical Committee. A Fellow of the IEEE for contributions to the theory and application of speech enhancement |
