G10L 19/02
Speech or audio signals analysis-synthesis techniques for redundancy reduction: using spectral analysis
Official title: using spectral analysis, e.g. transform vocoders or subband vocoders
G10L19/02 (Speech or audio signals analysis-synthesis techniques for redundancy reduction: using spectral analysis) appears on 4,225 US grants and 4,376 published applications in this corpus.
Search patents in G10L- Granted patents
- 4,225
- Published applications
- 4,376
- Assignees
- 755
- Inventors
- 3,407
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 6 | 0 |
| 1989 | 10 | 0 |
| 1990 | 12 | 0 |
| 1991 | 7 | 0 |
| 1992 | 10 | 0 |
| 1993 | 15 | 0 |
| 1994 | 15 | 0 |
| 1995 | 16 | 0 |
| 1996 | 25 | 0 |
| 1997 | 38 | 0 |
| 1998 | 57 | 0 |
| 1999 | 49 | 0 |
| 2000 | 47 | 0 |
| 2001 | 37 | 17 |
| 2002 | 50 | 69 |
| 2003 | 33 | 76 |
| 2004 | 54 | 106 |
| 2005 | 40 | 85 |
| 2006 | 59 | 83 |
| 2007 | 51 | 147 |
| 2008 | 85 | 147 |
| 2009 | 76 | 157 |
| 2010 | 90 | 154 |
| 2011 | 142 | 142 |
| 2012 | 161 | 160 |
| 2013 | 178 | 196 |
| 2014 | 170 | 161 |
| 2015 | 173 | 200 |
| 2016 | 235 | 267 |
| 2017 | 320 | 311 |
| 2018 | 232 | 219 |
| 2019 | 322 | 267 |
| 2020 | 256 | 243 |
| 2021 | 162 | 208 |
| 2022 | 191 | 204 |
| 2023 | 217 | 214 |
| 2024 | 256 | 230 |
| 2025 | 198 | 199 |
| 2026 | 112 | 114 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G10L 19/0204Using subband decomposition1,547
- G10L 19/032Quantisation or dequantisation of spectral components1,379
- G10L 19/0212Using orthogonal transformation972
- G10L 19/022Blocking, i.e. grouping of samples in time863
- G10L 19/028Noise substitution, i.e. substituting non-tonal spectral components by noisy source277
- G10L 19/03Spectral prediction for preventing pre-echo168
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Most cited
By later US patents
- Speech bandwidth extension method and apparatus433US 5,455,888 ANorthern Telecom Limited · 1995
- Adaptive-block-length, adaptive-transforn, and adaptive-window transform coder, decoder, and encoder/decoder for high-quality audio412US 5,394,473 ADolby Laboratories Licensing Corporation · 1995
- Method and apparatus for embedding data, including watermarks, in human perceptible sounds368US 6,061,793 ARegents of the University of Minnesota · 2000
- Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels362US 5,956,674 ADigital Theater Systems, Inc. · 1999
- Apparatus and method for encoding a multi-channel audio signal314US 8,577,045 B2Motorola Mobility LLC · 2013