A time-domain implementation of data-independent robust broadband beamformers with lowfilter order
Mabande E, Schad A, Kellermann W (2011)
Publication Language: English
Publication Status: Published
Publication Type: Conference contribution, Conference Contribution
Publication year: 2011
Pages Range: 81-85
Article Number: 5942415
Event location: Edinburgh
ISBN: 9781457709999
DOI: 10.1109/HSCMA.2011.5942415
Abstract
Broadband data-independent beamforming designs aiming at constant beamwidth lead to superdirective beamformers for low frequencies, if the array size is small relative to the wavelengths. Constraints on delay and complexity often render beamformers with low filter order desirable. Direct control of the robustness of these beamformers is required if they are to be applied successfully in practice. Here, we present a method where beamformers with low filter order are obtained directly from solving a constrained optimization problem which guarantees a distortionless response in the desired look direction and meets the user-defined robustness constraints. The effectiveness of this method in controlling the robustness and providing good spatial selectivity is shown by design examples. © 2011 IEEE.
Authors with CRIS profile
Involved external institutions
Germany (DE)How to cite
APA:
Mabande, E., Schad, A., & Kellermann, W. (2011). A time-domain implementation of data-independent robust broadband beamformers with lowfilter order. In Proceedings of the 2011 Joint Workshop on Hands-free Speech Communication and Microphone Arrays, HSCMA'11 (pp. 81-85). Edinburgh, GB.
MLA:
Mabande, Edwin, Adrian Schad, and Walter Kellermann. "A time-domain implementation of data-independent robust broadband beamformers with lowfilter order." Proceedings of the 2011 Joint Workshop on Hands-free Speech Communication and Microphone Arrays, HSCMA'11, Edinburgh 2011. 81-85.
BibTeX: Download