H04S 2400/00
Details of stereophonic systems covered by h04s but not provided for in
Official title: Details of stereophonic systems covered by H04S but not provided for in its groups
H04S2400/00 (Details of stereophonic systems covered by h04s but not provided for in) appears on 5,620 US grants and 6,943 published applications in this corpus.
Search patents in H04S- Granted patents
- 5,620
- Published applications
- 6,943
- Assignees
- 1,154
- Inventors
- 7,358
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 17 | 0 |
| 1999 | 7 | 0 |
| 2000 | 10 | 0 |
| 2001 | 8 | 8 |
| 2002 | 10 | 24 |
| 2003 | 7 | 21 |
| 2004 | 7 | 19 |
| 2005 | 16 | 32 |
| 2006 | 14 | 43 |
| 2007 | 24 | 52 |
| 2008 | 21 | 71 |
| 2009 | 20 | 78 |
| 2010 | 22 | 79 |
| 2011 | 47 | 111 |
| 2012 | 84 | 134 |
| 2013 | 92 | 157 |
| 2014 | 99 | 175 |
| 2015 | 151 | 238 |
| 2016 | 226 | 344 |
| 2017 | 354 | 419 |
| 2018 | 440 | 479 |
| 2019 | 568 | 568 |
| 2020 | 574 | 565 |
| 2021 | 467 | 553 |
| 2022 | 491 | 566 |
| 2023 | 448 | 602 |
| 2024 | 538 | 643 |
| 2025 | 513 | 538 |
| 2026 | 294 | 424 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04S 2400/11Positioning of individual sound objectsIndexing code2,633
- H04S 2400/01Multi-channel, i.e. more than two input channels, sound reproduction with two speakersIndexing code1,949
- H04S 2400/15Aspects of sound capture and related signal processing for recording or reproductionIndexing code1,680
- H04S 2400/13Aspects of volume control, not necessarily automatic, in stereophonic sound systemsIndexing code1,209
- H04S 2400/03Aspects of down-mixing multi-channel audio to configurations with lower numbers of playbackIndexing code769
- H04S 2400/05Generation or adaptation of centre channel in multi-channel audio systemsIndexing code232
- H04S 2400/07Generation or adaptation of the low frequency effect [lfe] channelIndexing code134
- H04S 2400/09Electronic reduction of distortion of stereophonic sound systemsIndexing code108
Recent patents
- Device and method for expanding 7-channel audio by using radio transmission6 Oct 2026US 12,756,977 B2Samsung Electronics Co., Ltd.
- Method and apparatus for estimating spatial content of soundfield at desired location6 Oct 2026US 12,756,978 B2
- Audio playing method and related apparatus6 Oct 2026US 12,756,985 B2Huawei Technologies Co., Ltd.
- Colorless generation of elevation perceptual cues using all-pass filter networks6 Oct 2026US 12,756,986 B2Boomcloud 360, Inc.
- Ear-worn device with neural network-based noise modification and/or spatial focusing29 Sep 2026US 12,750,623 B2Fortell Research Inc.
- A method, device, system, and software for a computer-implemented method for playback of game audio by use of representative audio objects at runtime8 Oct 2026US 2026/0306950 A1Dolby Laboratories Licensing Corporation
- Method and device for decoding an audio soundfield representation8 Oct 2026US 2026/0311709 A1Dolby Laboratories Licensing Corporation
- Performing common audio convolutions using iso-trajectories in three dimensional (3d) space8 Oct 2026US 2026/0313308 A1Google Inc.
- Virtual sound sources and rendering techniques8 Oct 2026US 2026/0313309 A1Dolby International AB
- Audio Scene Description and Control8 Oct 2026US 2026/0313310 A1Apple Inc.
Most cited
By later US patents
- Orientation-responsive use of acoustic reflection403US 8,934,655 B2Bose Corporation · 2015
- Sound stage controller for a near-field speaker-based audio system381US 9,215,545 B2Bose Corporation · 2015
- Method and apparatus for automatically enabling subwoofer channel audio based on detection of subwoofer device364US 7,792,311 B1Sonos, Inc. · 2010
- Electronic apparatus for generating beamformed audio signals with steerable nulls326US 8,433,076 B2Motorola Mobility LLC · 2013
- Spatial disassembly processor322US 7,630,500 B1Bose Corporation · 2009