H04S 7/307
Frequency adjustment
Official title: {Frequency adjustment, e.g. tone control (H04S7/301 takes precedence)}
H04S7/307 (Frequency adjustment) appears on 1,067 US grants and 1,271 published applications in this corpus.
Search patents in H04S- Granted patents
- 1,067
- Published applications
- 1,271
- Assignees
- 362
- Inventors
- 1,746
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 7 |
| 2002 | 4 | 8 |
| 2003 | 4 | 9 |
| 2004 | 4 | 16 |
| 2005 | 7 | 31 |
| 2006 | 11 | 21 |
| 2007 | 11 | 16 |
| 2008 | 7 | 21 |
| 2009 | 13 | 8 |
| 2010 | 14 | 13 |
| 2011 | 11 | 13 |
| 2012 | 17 | 19 |
| 2013 | 13 | 27 |
| 2014 | 21 | 34 |
| 2015 | 23 | 43 |
| 2016 | 47 | 62 |
| 2017 | 76 | 91 |
| 2018 | 90 | 91 |
| 2019 | 97 | 87 |
| 2020 | 95 | 81 |
| 2021 | 88 | 94 |
| 2022 | 69 | 92 |
| 2023 | 78 | 104 |
| 2024 | 83 | 107 |
| 2025 | 77 | 85 |
| 2026 | 59 | 91 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Colorless generation of elevation perceptual cues using all-pass filter networks6 Oct 2026US 12,756,986 B2Boomcloud 360, Inc.
- Audio processing device and method therefor15 Sep 2026US 12,739,587 B2Sony Group Corporation
- Apparatus and method for generating control signals for a loudspeaker system with spectral interlacing in the lower frequency range15 Sep 2026US 12,739,591 B2Kaetel Systems GmbH
- Hearing compensation in an audio device8 Sep 2026US 12,732,762 B2Aviom, Inc.
- Apparatus and method for rendering audio objects8 Sep 2026US 12,732,771 B2Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.
- Foldable electronic device including a plurality of speakers and method of operating the same1 Oct 2026US 2026/0304041 A1Samsung Electronics Co., Ltd.
- Acoustic reproduction system1 Oct 2026US 2026/0304062 A1Adaptive Audio Limited
- Loudspeaker Control in a Plurality of Frequency Bands1 Oct 2026US 2026/0304063 A1Audioscenic Limited
- Filterbank Pitchshifter24 Sep 2026US 2026/0292437 A1Eventide Inc.
- A method of processing audio for playback of immersive audio10 Sep 2026US 2026/0270637 A1Dolby International AB
Most cited
By later US patents
- Shaping sound responsive to speaker orientation476US 9,042,556 B2Sonos, Inc. · 2015
- Speaker equalization for mobile devices370US 9,300,266 B2QUALCOMM Incorporated · 2016
- Automatic audio system equalizing357US 7,483,540 B2Bose Corporation · 2009
- Electroacoustical transducing313US 7,519,188 B2Bose Corporation · 2009
- Method for equalizing audio, and video apparatus using the same300US 8,600,075 B2Samsung Electronics Co., Ltd. · 2013