G10H 2250/221
Cosine transform
Official title: Cosine transform; DCT [discrete cosine transform], e.g. for use in lossy audio compression such as MP3
G10H2250/221 (Cosine transform) appears on 32 US grants and 34 published applications in this corpus.
Search patents in G10H- Granted patents
- 32
- Published applications
- 34
- Assignees
- 33
- Inventors
- 96
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 2 |
| 2004 | 0 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 4 |
| 2008 | 2 | 0 |
| 2009 | 3 | 4 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 1 | 1 |
| 2016 | 2 | 2 |
| 2017 | 4 | 2 |
| 2018 | 1 | 1 |
| 2019 | 3 | 2 |
| 2020 | 2 | 2 |
| 2021 | 1 | 4 |
| 2022 | 1 | 1 |
| 2023 | 2 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Methods and apparatus to extract a pitch-independent timbre attribute from a media signal24 Mar 2026US 12,586,554 B2The Nielsen Company (US), LLC
- Computer-implemented method and device for generating frequency component vector of time-series data24 Jun 2025US 12,340,303 B2Yamaha Corporation
- Methods and apparatus to extract a pitch-independent timbre attribute from a media signal30 Jul 2024US 12,051,396 B2The Nielsen Company (US), LLC
- Mutating spectral resynthesizer system and methods14 Nov 2023US 11,817,069 B2Rossum Electro-Music, LLC
- Methods and apparatus to extract a pitch-independent timbre attribute from a media signal5 Sep 2023US 11,749,244 B2The Nielson Company (US), LLC
- Methods and apparatus to extract a pitch-independent timbre attribute from a media signal3 Oct 2024US 2024/0331669 A1The Nielsen Company (US), LLC
- Methods and apparatus to extract a pitch-independent timbre attribute from a media signal16 Nov 2023US 2023/0368761 A1The Nielsen Company (US), LLC
- Methods and systems for determining compact semantic representations of digital audio signals28 Jul 2022US 2022/0238087 A1Moodagent A/S
- Mutating spectral resynthesizer system and methods29 Jul 2021US 2021/0233504 A1Rossum Electro-Music, LLC
- Computer-implemented method and device for generating frequency component vector of time-series data3 Jun 2021US 2021/0166128 A1Yamaha Corporation
Most cited
By later US patents
- Method and apparatus for creating a unique audio signature175US 8,086,445 B2Audible Magic Corporation · 2011
- Method and apparatus for creating a unique audio signature130US 7,562,012 B1Audible Magic Corporation · 2009
- Downloading of personalization layers for symbolically compressed objects103US 6,088,484 AHughes Electronics Corporation · 2000
- Audio recompression from higher rates for karaoke, video games, and other applications69US 5,974,387 AYamaha Corporation · 1999
- Digital watermarking method and apparatus for audio data61US 6,839,673 B1Markany Inc. · 2005