H04S 7/301
Automatic calibration of stereophonic sound system
Official title: {Automatic calibration of stereophonic sound system, e.g. with test microphone}
H04S7/301 (Automatic calibration of stereophonic sound system) appears on 1,350 US grants and 1,648 published applications in this corpus.
Search patents in H04S- Granted patents
- 1,350
- Published applications
- 1,648
- Assignees
- 411
- Inventors
- 2,364
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 4 |
| 2002 | 0 | 5 |
| 2003 | 1 | 7 |
| 2004 | 5 | 11 |
| 2005 | 6 | 33 |
| 2006 | 14 | 24 |
| 2007 | 3 | 28 |
| 2008 | 6 | 23 |
| 2009 | 14 | 24 |
| 2010 | 10 | 26 |
| 2011 | 19 | 27 |
| 2012 | 48 | 38 |
| 2013 | 17 | 21 |
| 2014 | 27 | 38 |
| 2015 | 35 | 62 |
| 2016 | 49 | 85 |
| 2017 | 97 | 98 |
| 2018 | 131 | 112 |
| 2019 | 125 | 124 |
| 2020 | 120 | 100 |
| 2021 | 114 | 109 |
| 2022 | 82 | 123 |
| 2023 | 107 | 121 |
| 2024 | 112 | 158 |
| 2025 | 126 | 130 |
| 2026 | 61 | 117 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Detection of the change of position of a set-top box by image analysis29 Sep 2026US 12,750,627 B2Sagemcom Broadband SAS
- Media playback based on sensor data29 Sep 2026US 12,750,630 B2Sonos, Inc.
- Calibration based on audio content15 Sep 2026US 12,739,581 B2Sonos, Inc.
- Vehicle-mounted sound reproduction signal delay method adapted to listening center position8 Sep 2026US 12,732,767 B2South China University of Technology
- Sound image calibration method and apparatus8 Sep 2026US 12,732,768 B2Honor Device Co., Ltd.
- Systems and methods for generating spatial audio tracks by analyzing media content and associated metadata1 Oct 2026US 2026/0301406 A1
- Immersive audio in a media playback system1 Oct 2026US 2026/0303676 A1Sonos, Inc.
- Methods and systems for managing audio in multi-user environment1 Oct 2026US 2026/0304057 A1Varjo Technologies Oy
- System and method for automatic adjustment of reference gain24 Sep 2026US 2026/0291458 A1Shure Acquisition Holdings, Inc.
- Multi-voice conferencing device soundbar test system and method24 Sep 2026US 2026/0292424 A1Crestron Electronics, Inc.
Most cited
By later US patents
- System and method for calibration of an acoustic system1,614US 7,630,501 B2Microsoft Corporation · 2009
- Distributed wireless speaker system with automatic configuration determination when new speakers are added400US 9,288,597 B2Sony Corporation · 2016
- Self-calibrating loudspeaker system374US 8,577,048 B2Harman International Industries, Incorporated · 2013
- Characterizing environment using ultrasound pilot tones371US 9,319,816 B1Amazon Technologies, Inc. · 2016
- Automatic audio system equalizing357US 7,483,540 B2Bose Corporation · 2009