H04S 2400/03
Aspects of down-mixing multi-channel audio to configurations with lower numbers of playback
Official title: Aspects of down-mixing multi-channel audio to configurations with lower numbers of playback channels, e.g. 7.1 -> 5.1 (H04S2400/01 takes precedence)
H04S2400/03 (Aspects of down-mixing multi-channel audio to configurations with lower numbers of playback) appears on 769 US grants and 872 published applications in this corpus.
Search patents in H04S- Granted patents
- 769
- Published applications
- 872
- Assignees
- 148
- Inventors
- 745
- Latest grant
- 15 Sep 2026
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| Year | Granted patents | Published applications |
|---|---|---|
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 4 |
| 2008 | 1 | 2 |
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| 2010 | 1 | 6 |
| 2011 | 7 | 20 |
| 2012 | 6 | 28 |
| 2013 | 10 | 21 |
| 2014 | 20 | 29 |
| 2015 | 21 | 30 |
| 2016 | 39 | 105 |
| 2017 | 86 | 89 |
| 2018 | 92 | 87 |
| 2019 | 114 | 101 |
| 2020 | 81 | 73 |
| 2021 | 64 | 50 |
| 2022 | 57 | 62 |
| 2023 | 41 | 39 |
| 2024 | 64 | 48 |
| 2025 | 44 | 47 |
| 2026 | 21 | 22 |
By publication year. 2026 runs to 8 Oct.
Recent patents
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- Processing of microphone signals for spatial playback11 Aug 2026US 12,707,197 B2Dolby Laboratories Licensing Corporation
- Transmission device, reception device, and control method thereof11 Aug 2026US 12,707,217 B2Samsung Electronics Co., Ltd.
- Multi-channel audio decoder, multi-channel audio encoder, methods and computer program using a residual-signal-based adjustment of a contribution of a decorrelated signal1 Oct 2026US 2026/0301751 A1Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.
- Methods for parametric multi-channel encoding24 Sep 2026US 2026/0290357 A1Dolby International AB
- Optimized processing for reducing channels of a stereophonic audio signal17 Sep 2026US 2026/0281647 A1
- Binarual rendering13 Aug 2026US 2026/0238951 A1Dolby International AB
- Sound signal downmix method, sound signal coding method, sound signal downmix apparatus, sound signal coding apparatus, program6 Aug 2026US 2026/0230765 A1NTT, Inc.
Most cited
By later US patents
- Method and apparatus for automatically enabling subwoofer channel audio based on detection of subwoofer device364US 7,792,311 B1Sonos, Inc. · 2010
- Audio panning with multi-channel surround sound decoding234US 8,767,970 B2Apple Inc. · 2014
- Compatible multi-channel coding/decoding by weighting the downmix channel149US 7,447,317 B2Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V. · 2008
- Decoding device, decoding method, encoding device, encoding method, and program77US 9,542,952 B2Sony Corporation · 2017
- Low-frequency effects haptic conversion system66US 9,354,704 B2Immersion Corporation · 2016