The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 2019
Filed:
Jan. 08, 2016
Mh Acoustics, Llc, Summit, NJ (US);
Gary W. Elko, Summit, NJ (US);
Eric J. Diethorn, Long Valley, NJ (US);
Steven Backer, Oakland, CA (US);
Jens M. Meyer, Fairfax, VT (US);
Tomas F. Gaensler, Warren, NJ (US);
MH Acoustics, LLC, Summit, NJ (US);
Abstract
In one embodiment, an audio processing system reduces reverberation in an audio signal. A first beamformer generates a first, directional beampattern, and a second beamformer generates a second beampattern. A signal-processing subsystem (i) processes the first and second beampatterns to generate suppression factors corresponding to the reverberation and (ii) applies the suppression factors to one of the first and second beampatterns to reduce the reverberation in the beampattern. In one implementation, the beampatterns are crossed-beam beampatterns, and the signal-processing subsystem generates the suppression factors based on coherence estimates for the beampatterns. In another implementation, the beampatterns are disjoint beampatterns, and the signal-processing subsystem generates the suppression factors based on short-time and long-time envelope estimates for the beampatterns. Depending on the implementation, the beamformers may be co-located with differently shaped beampatterns or non-co-located with differently or equally shaped beampatterns.