G10L 19/265
Pre-filtering
Official title: {Pre-filtering, e.g. high frequency emphasis prior to encoding}
G10L19/265 (Pre-filtering) appears on 395 US grants and 421 published applications in this corpus.
Search patents in G10L- Granted patents
- 395
- Published applications
- 421
- Assignees
- 95
- Inventors
- 313
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 1 |
| 2002 | 5 | 7 |
| 2003 | 6 | 3 |
| 2004 | 4 | 7 |
| 2005 | 4 | 6 |
| 2006 | 5 | 5 |
| 2007 | 1 | 8 |
| 2008 | 6 | 3 |
| 2009 | 4 | 14 |
| 2010 | 5 | 7 |
| 2011 | 6 | 11 |
| 2012 | 12 | 13 |
| 2013 | 13 | 14 |
| 2014 | 15 | 26 |
| 2015 | 14 | 35 |
| 2016 | 41 | 38 |
| 2017 | 60 | 54 |
| 2018 | 28 | 28 |
| 2019 | 29 | 26 |
| 2020 | 28 | 25 |
| 2021 | 18 | 18 |
| 2022 | 16 | 14 |
| 2023 | 28 | 24 |
| 2024 | 25 | 20 |
| 2025 | 6 | 10 |
| 2026 | 7 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Oversampling in a combined transposer filterbank6 Oct 2026US 12,753,444 B2Dolby International AB
- Efficient combined harmonic transposition1 Sep 2026US 12,725,592 B2Dolby International AB
- Cross product enhanced harmonic transposition28 Jul 2026US 12,694,885 B2Dolby International AB
- Oversampling in a combined transposer filterbank9 Jun 2026US 12,649,951 B2Dolby International AB
- Decoder, encoder, and method for informed loudness estimation in object-based audio coding systems10 Mar 2026US 12,573,410 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Audio signal coding method and apparatus, and audio signal decoding method and apparatus17 Sep 2026US 2026/0279366 A1Douyin Vision Co., Ltd.
- Post filter for audio signals9 Jul 2026US 2026/0196229 A1Dolby International AB
- Decoder, encoder, and method for informed loudness estimation in object-based audio coding systems25 Jun 2026US 2026/0179628 A1Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Parametric reconstruction of audio signals1 Jan 2026US 2026/0004793 A1Dolby International AB
- Cross product enhanced subband block based harmonic transposition13 Nov 2025US 2025/0349305 A1Dolby International AB
Most cited
By later US patents
- Enhancing perceptual performance of sbr and related hfr coding methods by adaptive noise-floor addition and noise substitution limiting211US 6,708,145 B1Coding Technologies Sweden AB · 2004
- Pitch determination using speech classification and prior pitch estimation120US 6,507,814 B1Conexant Systems, Inc. · 2003
- Spectral translation/folding in the subband domain120US 7,483,758 B2Coding Technologies Sweden AB · 2009
- Speech encoder using voice activity detection in coding noise106US 6,823,303 B1Conexant Systems, Inc. · 2004
- Adaptive gain reduction to produce fixed codebook target signal103US 6,104,992 AConexant Systems, Inc. · 2000