An Alternative Implementation of the Superdirective Beamformer

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Abstract:

In this contribution we introduce a new implementation of superdirective beamformers. The new structure has the advantage of reduced computational complexity. This advantage is due to a GSC-like (Generalized Sidelobe Canceller) scheme. Unlike the conventional GSC, the filters in the sidelobe cancelling path are fixed and can be computed in advance by using the Wiener solution. The new structure yields exactly the same noise reduction performance as the superdirective beamformer does.

Document type:

Conference Paper

Publication:

New Paltz, New York, USA, 17. - 20. October 1999

Conference:

IEEE Workshop on Application of Signal Processing to Audio and Acoustics (WASPAA 99)

Pages:

7-10

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