A Hybrid Approach for Speaker Tracking using Time of Arrival with Concave-Convex Procedure
Dhanya R1, Smitha K S2
1Dhanya R, Department of Electronics and Communication Engineering, LBS Institute of Technology, Thiruvananthapuram (Kerala), India.
2Smitha K S, Department of Electronics and Communication Engineering, LBS Institute of Technology, Thiruvananthapuram (Kerala), India.
Manuscript received on 15 August 2015 | Revised Manuscript received on 25 August 2015 | Manuscript Published on 30 August 2015 | PP: 161-164 | Volume-4 Issue-6, August 2015 | Retrieval Number: F4203084615/15©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Single source localization problem using Time f Arrival (ToA ) technique is described here.Time of Arrival is the travel time of a radio signal from a single transmitter to a remote single receiver. Among various models for localization measurement of ToA is relatively direct since by identifying and locating known samples from transmitted source signal, the signal arrival time can be determined. The corresponding unknown source-measurement associations can be incorporated into optimization. An efficient three step algorithm is used to solve this optimization problem which includes the steps of course location estimation, determination of source-measurement association and source location refinement. This approach simplify the problem with convex relaxation and approximation techniques. Here a popular optimization package like CVX is used. The proposed algorithm has low computational complexity and is feasible for real time applications
Keywords: Time Of Arrival Measurement, Voice Activity Deduction(VAD), Optimization, Convex Relaxation, Course Location Estimation.
Scope of the Article: Discrete Optimization