H04R 2430/21
Direction finding using differential microphone array [dma]
Official title: Direction finding using differential microphone array [DMA]
H04R2430/21 (Direction finding using differential microphone array [dma]) appears on 315 US grants and 353 published applications in this corpus.
Search patents in H04R- Granted patents
- 315
- Published applications
- 353
- Assignees
- 158
- Inventors
- 576
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 3 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 2 | 1 |
| 2008 | 2 | 0 |
| 2009 | 0 | 5 |
| 2010 | 1 | 6 |
| 2011 | 0 | 4 |
| 2012 | 4 | 10 |
| 2013 | 3 | 10 |
| 2014 | 6 | 9 |
| 2015 | 14 | 11 |
| 2016 | 20 | 20 |
| 2017 | 27 | 32 |
| 2018 | 34 | 23 |
| 2019 | 23 | 26 |
| 2020 | 19 | 17 |
| 2021 | 24 | 50 |
| 2022 | 36 | 35 |
| 2023 | 38 | 37 |
| 2024 | 34 | 21 |
| 2025 | 17 | 20 |
| 2026 | 6 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Acoustic output device and components thereof4 Aug 2026US 12,701,349 B2Shenzhen Shokz Co., Ltd.
- System and method for estimating direction of arrival and delays of early room reflections9 Jun 2026US 12,652,489 B2B. G. Negev Technologies and Application Ltd., At Ben-Gurion University
- Deep audio zooming: beamwidth-controllable neural beamformer2 Jun 2026US 12,647,721 B2Tencent America LLC
- Electronic apparatus and control method thereof3 Mar 2026US 12,566,263 B2Samsung Electronics Co., Ltd.
- Apparatus, methods and computer programs for controlling audibility of sound sources17 Feb 2026US 12,556,861 B2Nokia Technologies Oy
- Electronic apparatus and control method thereof1 Oct 2026US 2026/0299123 A1Samsung Electronics Co., Ltd.
- Concentric circular microphone arrays with 3d steerable beamformers10 Sep 2026US 2026/0270614 A1Northwestern Polytechnical University
- System and method employing smart speaker selection for hearing enhancement11 Jun 2026US 2026/0164195 A1NXP B. V.
- Array Pickup Method and Apparatus Capable of Steplessly Adjusting Pickup Direction28 May 2026US 2026/0149920 A1Shenzhen Bajin Technology Co., Ltd.
- Microphone assembly adapted to form continuously variable polar patterns30 Apr 2026US 2026/0122386 A1Logitech Europe S. A.
Most cited
By later US patents
- Sound source localization using multiple microphone arrays414US 9,489,948 B1Amazon Technologies, Inc. · 2016
- Adaptive microphone array179US 5,473,701 AAT&T Corp. · 1995
- Three-dimensional beam forming with a microphone array160US 10,051,366 B1Sonos, Inc. · 2018
- Multi-orientation playback device microphones154US 9,743,204 B1Sonos, Inc. · 2017
- Steerable and variable first-order differential microphone array147US 6,041,127 ALucent Technologies Inc. · 2000