Patents
US 10283139 B2: Reverberation suppression using multiple beamformers
- Granted
- 2019-05-07
- Filed
- 2016-01-08 application 15542008
- Type
- Utility · 9 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
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.
Source: PVGPATDIS, file of 2026-04-10 (ipg190507.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| MH Acoustics, LLC 19 patents | US company or organization | Summit, NJ | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Gary W. Elko | Summit, NJ | 26 | PVGPATDIS, file of 2026-04-10 | |
| Eric John Diethorn | Long Valley, NJ | 20 | PVGPATDIS, file of 2026-04-10 | |
| Steven L. Backer | Oakland, CA | 3 | PVGPATDIS, file of 2026-04-10 | |
| Jens M. Meyer | Saint Albans, VT | 17 | PVGPATDIS, file of 2026-04-10 | |
| Tomas F. Gaensler | Hackettstown, NJ | 11 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G10L | Speech analysis techniques or speech synthesis; speech recognition; speech or voice processing techniques; speech or audio coding or decoding | G10L21/0232 | PVGPATDIS, file of 2026-04-10 |
| H04R | Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; electric hearing aids; public address systems | H04R1/406 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2017-07-06 | Assignment Assignment of assignor's interest | BACKER, STEVEN signed 2017-07-06 DIETHORN, ERIC J. signed 2017-07-06 ELKO, GARY W. signed 2017-07-06 GAENSLER, TOMAS F. signed 2017-07-06 MEYER, JENS M. signed 2017-07-06 | MH ACOUSTICS LLC SUMMIT, NJ | 42926/144 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.