G01S 3/808
Using transducers spaced apart and measuring phase or time difference between signals
Official title: using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
G01S3/808 (Using transducers spaced apart and measuring phase or time difference between signals) appears on 652 US grants and 604 published applications in this corpus.
Search patents in G01S- Granted patents
- 652
- Published applications
- 604
- Assignees
- 379
- Inventors
- 1,422
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 0 | 0 |
| 1986 | 5 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 6 | 0 |
| 1991 | 7 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 11 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 8 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 2 |
| 2002 | 3 | 6 |
| 2003 | 11 | 12 |
| 2004 | 7 | 11 |
| 2005 | 6 | 12 |
| 2006 | 10 | 13 |
| 2007 | 16 | 12 |
| 2008 | 12 | 13 |
| 2009 | 14 | 17 |
| 2010 | 17 | 13 |
| 2011 | 10 | 23 |
| 2012 | 24 | 27 |
| 2013 | 8 | 24 |
| 2014 | 20 | 24 |
| 2015 | 21 | 14 |
| 2016 | 34 | 24 |
| 2017 | 27 | 28 |
| 2018 | 31 | 32 |
| 2019 | 28 | 48 |
| 2020 | 36 | 34 |
| 2021 | 39 | 57 |
| 2022 | 43 | 40 |
| 2023 | 39 | 42 |
| 2024 | 42 | 33 |
| 2025 | 31 | 31 |
| 2026 | 19 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for obtaining a position of a sound source18 Aug 2026US 12,710,502 B2Nomono AS
- Apparatus and method for narrowband direction- of-arrival estimation4 Aug 2026US 12,701,355 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- 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
- Wake-up method and apparatus for smart device, storage medium, and electronic device2 Jun 2026US 12,646,516 B2Haier Smart Home Co., Ltd.
- Systems and methods for detachable and attachable acoustic imaging sensors12 May 2026US 12,625,258 B2Fluke Corporation
- Method for determining a direction from which an emergency vehicle is approaching a vehicle8 Oct 2026US 2026/0309827 A1Mercedes-Benz Group AG
- Noise camera, server for processing documentary evidence from noise-cameras and methods10 Sep 2026US 2026/0266944 A1Intelligent Instruments Corporation
- Tracking based on sound and sensor fusion20 Aug 2026US 2026/0243863 A1QUALCOMM Incorporated
- Focusing a camera capturing video data using directional data of audio23 Jul 2026US 2026/0214330 A1Telefonaktiebolaget LM Ericsson (publ)
- Acoustic tracking system25 Jun 2026US 2026/0181320 A19374-0587 Quebec Inc.
Most cited
By later US patents
- Locating an audio source355US 6,593,956 B1Polycom, Inc. · 2003
- Beam rejection in multi-beam microphone systems180US 9,689,960 B1Amazon Technologies, Inc. · 2017
- Passive active underwater sound detection apparatus146US 4,974,213 A1990
- Acoustic catastrophic event detection and data capture and retrieval system for aircraft143US 5,798,458 ARaytheon TI Systems, Inc. · 1998
- Acoustic counter-sniper system135US 6,178,141 B1GTE Internetworking Incorporated · 2001