Patents
US 8942382 B2: Dynamic beamformer processing for acoustic echo cancellation in systems with high acoustic coupling
- Granted
- 2015-01-27
- Filed
- 2012-03-22 application 13426761
- Type
- Utility · 10 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Near-end equipment for a communication channel with far-end equipment. The near-end equipment includes at least one loudspeaker, at least two microphones, a beamformer, and an echo canceller. The communication channel may be in one of a number of communication states including Near-End Only state, Far-End Only state, and Double-Talk state. In one embodiment, when the echo canceller determines that the communication channel is in either the Far-End Only state or the Double-Talk state, the beamformer is configured to generate a nearfield beampattern signal that directs a null towards a loudspeaker. When the echo canceller detects the Near-End Only state, the beamformer is configured to generate a farfield beampattern signal that optimizes reception of acoustic signals from the near-end audio source. Using different beamformer processing for different communication states allows echo cancellation processing to be more successful at reducing echo in the signal transmitted to the far-end equipment.
Source: PVGPATDIS, file of 2026-04-10 (ipg150127.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 | |
| Tomas F. Gaensler | Hackettstown, NJ | 11 | PVGPATDIS, file of 2026-04-10 | |
| Eric John Diethorn | Long Valley, NJ | 20 | PVGPATDIS, file of 2026-04-10 | |
| Jens M. Meyer | Saint Albans, VT | 17 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H04M | Telephonic communication | H04M9/082 | 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 |
|---|---|---|---|---|---|
| 2012-05-23 | Assignment Assignment of assignor's interest | DIETHORN, ERIC J. signed 2012-03-22 ELKO, GARY W. signed 2012-03-22 MEYER, JENS M. signed 2012-03-23 GAENSLER, TOMAS F. signed 2012-05-14 | MH ACOUSTICS LLC SUMMIT, NJ | 28254/782 | 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.