H04R 3/005
Circuits for transducers: for combining the signals of two or more microphones
Official title: {for combining the signals of two or more microphones (specially adapted for hearing aids H04R25/407)}
H04R3/005 (Circuits for transducers: for combining the signals of two or more microphones) appears on 5,478 US grants and 6,174 published applications in this corpus.
Search patents in H04R- Granted patents
- 5,478
- Published applications
- 6,174
- Assignees
- 1,420
- Inventors
- 8,775
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 1 | 0 |
| 1991 | 8 | 0 |
| 1992 | 6 | 0 |
| 1993 | 11 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 19 | 0 |
| 1997 | 15 | 0 |
| 1998 | 18 | 0 |
| 1999 | 7 | 0 |
| 2000 | 14 | 0 |
| 2001 | 10 | 7 |
| 2002 | 7 | 27 |
| 2003 | 25 | 46 |
| 2004 | 19 | 47 |
| 2005 | 12 | 53 |
| 2006 | 51 | 54 |
| 2007 | 36 | 67 |
| 2008 | 26 | 67 |
| 2009 | 31 | 106 |
| 2010 | 38 | 95 |
| 2011 | 53 | 108 |
| 2012 | 122 | 146 |
| 2013 | 108 | 169 |
| 2014 | 135 | 215 |
| 2015 | 169 | 218 |
| 2016 | 279 | 271 |
| 2017 | 345 | 333 |
| 2018 | 327 | 399 |
| 2019 | 447 | 492 |
| 2020 | 493 | 515 |
| 2021 | 458 | 588 |
| 2022 | 525 | 557 |
| 2023 | 528 | 528 |
| 2024 | 428 | 405 |
| 2025 | 424 | 376 |
| 2026 | 225 | 285 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Concurrency rules for network microphone devices having multiple voice assistant services29 Sep 2026US 12,748,566 B2Sonos, Inc.
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- Electronic device and method for performing audio communication between first space and second space1 Oct 2026US 2026/0299873 A1Realtek Semiconductor Corp.
- Robust voice activity detector system for use with an earphone1 Oct 2026US 2026/0299875 A1ST DetectTech, LLC
- Sound extraction method, sound extraction system, and program1 Oct 2026US 2026/0301762 A1KYOCERA Corporation
- Microphone assembly with multimodal interfaces and sensors1 Oct 2026US 2026/0304035 A1Logitech Europe S. A.
Most cited
By later US patents
- Two active element in-the-ear microphone system507US 5,692,059 A1997
- Self calibrating multi-element dipole microphone495US 8,824,692 B2Vocollect, Inc. · 2014
- Sound source localization using multiple microphone arrays414US 9,489,948 B1Amazon Technologies, Inc. · 2016
- Ad hoc sensor arrays376US 8,175,297 B1Google Inc. · 2012
- Locating an audio source355US 6,593,956 B1Polycom, Inc. · 2003