Proceedings of the Korea Multimedia Society Conference (한국멀티미디어학회:학술대회논문집)
- 2003.05b
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- Pages.446-449
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- 2003
A Modified Robust Adaptive Beamformer for Microphone Arrays
- Lee, Young-Ho (Dept. of Electronics Engineering, Pusan Nat'l University) ;
- Choi, Su-Young (Dept. of Electronics Engineering, Pusan Nat'l University) ;
- Park, Jans-Sik (Dept. of Visual Technologies, Dongeul Institute of Technology) ;
- Son, Kyung-Sik (Dept. of Electronics Engineering, Pusan Nat'l University)
- Published : 2003.05.01
Abstract
The conventional GSC is inappropriate in real situation when the target signal is present. The steering vector error cancels the target signal and the target signal misadjusts the weight of the adaptive filter. To prevent the target signal cancellation, the robust GSC using the constrained adaptive filters was already proposed. However, the adaptive weight misadjustment is not settled in robust GSC. This Paper proposes a revised robust sidelobe canceller with adaptive compensator. To compensate the influence of target signal, the adaptive compensator is used in cascade. In computer simulation, we show the performance improvement by comparing the robust GSC with the proposed GSC.
Keywords