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DESIGN OF ROBUST STEERABLE BROADBAND BEAMFORMERS INCORPORATING MICROPHONE GAIN AND PHASE ERROR CHARACTERISTICS

Full Paper at IEEE Xplore

Microphone Array Signal Processing

Presented by: Chiong Ching Lai, Author(s): Chiong Ching Lai, Sven Nordholm, Yee Hong Leung, Curtin University, Australia

Broadband beamformers are known to be sensitive to errors and mismatches in array elements. This paper proposes a robust steerable broadband beamformer design using the Farrow structure and for arbitrary array geometry. The design formulation includes stochastic models describing the microphone characteristics as random variables, thus allowing flexibility for microphone errors. This method establishes a direct relationship in controlling the robustness specification in the design from given microphone characteristics. The robust design procedure optimises the mean performance of beamformer. Design examples show significant reduction in error sensitivity in the robust design formulation.

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  Lecture Information

Recorded: 2011-05-27 14:05 - 14:25, Club D
Added: 19. 6. 2011 23:43
Number of views: 53
Video resolution: 1024x576 px, 512x288 px
Video length: 0:14:33
Audio track: MP3 [4.89 MB], 0:14:33