منابع مشابه
Dual-Channel Speech Enhancement by Superdirective Beamforming
In this contribution, a dual-channel input-output speech enhancement system is introduced. The proposed algorithm is an adaptation of the well-known superdirective beamformer including postfiltering to the binaural application. In contrast to conventional beamformer processing, the proposed system outputs enhanced stereo signals while preserving the important interaural amplitude and phase diff...
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The ability to replicate a plane wave represents an essential element of spatial sound field reproduction. In sound field synthesis, the desired field is often formulated as a plane wave and the error minimized; for other sound field control methods, the energy density or energy ratio is maximized. In all cases and further to the reproduction error, it is informative to characterize how planar ...
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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 GSClike (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 ...
متن کاملTowards Superdirective Beamforming with Loudspeaker Arrays
ABSTRACT In this paper, the superdirective beamforming principle as applied to loudspeaker arrays is investigated. Novel superdirectional beamformer designs (e.g. by Parra, [1]) offer significant spatial selectivity at low frequencies and allow for a small array aperture and some variability in loudspeaker positioning. The theoretical gains of superdirectional beamforming are generally difficul...
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In set-top videoconferencing, the complete videoconferencing system ts unobtrusively on top of the television. The microphone sound pickup system is one of the most important functional blocks with constraints of small size, high performance, and low cost. Persons speaking several feet away from the system must be picked up satisfactorily while noise generated internally in the system by the co...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1975
ISSN: 0001-4966
DOI: 10.1121/1.2002431