HK1244112A1 - Complex exponential modulated filter bank for high frequency reconstruction - Google Patents
Complex exponential modulated filter bank for high frequency reconstructionInfo
- Publication number
- HK1244112A1 HK1244112A1 HK18103022.6A HK18103022A HK1244112A1 HK 1244112 A1 HK1244112 A1 HK 1244112A1 HK 18103022 A HK18103022 A HK 18103022A HK 1244112 A1 HK1244112 A1 HK 1244112A1
- Authority
- HK
- Hong Kong
- Prior art keywords
- high frequency
- filter bank
- complex exponential
- frequency reconstruction
- modulated filter
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0248—Filters characterised by a particular frequency response or filtering method
- H03H17/0264—Filter sets with mutual related characteristics
- H03H17/0266—Filter banks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0248—Filters characterised by a particular frequency response or filtering method
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
- H03H17/0248—Filters characterised by a particular frequency response or filtering method
- H03H17/0264—Filter sets with mutual related characteristics
- H03H17/0272—Quadrature mirror filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2240/00—Indexing scheme relating to filter banks
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Image Processing (AREA)
- Optical Filters (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0900217 | 2009-02-18 | ||
| US25710509P | 2009-11-02 | 2009-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| HK1244112A1 true HK1244112A1 (en) | 2018-07-27 |
Family
ID=67688670
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HK18102950.4A HK1243561A1 (en) | 2009-02-18 | 2018-03-01 | Low delay modulated filter bank |
| HK18103022.6A HK1244112A1 (en) | 2009-02-18 | 2018-03-02 | Complex exponential modulated filter bank for high frequency reconstruction |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HK18102950.4A HK1243561A1 (en) | 2009-02-18 | 2018-03-01 | Low delay modulated filter bank |
Country Status (6)
| Country | Link |
|---|---|
| KR (4) | KR102292319B1 (en) |
| BR (6) | BR122019022312B1 (en) |
| ES (3) | ES2758249T3 (en) |
| HK (2) | HK1243561A1 (en) |
| HU (3) | HUE045955T2 (en) |
| TW (2) | TWI788752B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW202329625A (en) * | 2021-11-30 | 2023-07-16 | 瑞典商都比國際公司 | Method and device for designing an oversampled low delay filter bank |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE512719C2 (en) * | 1997-06-10 | 2000-05-02 | Lars Gustaf Liljeryd | A method and apparatus for reducing data flow based on harmonic bandwidth expansion |
| US6442581B1 (en) * | 1999-09-21 | 2002-08-27 | Creative Technologies Ltd. | Lattice structure for IIR and FIR filters with automatic normalization |
| JP2001285073A (en) * | 2000-03-29 | 2001-10-12 | Sony Corp | Device and method for signal processing |
| SE0101175D0 (en) * | 2001-04-02 | 2001-04-02 | Coding Technologies Sweden Ab | Aliasing reduction using complex-exponential-modulated filter banks |
| CA2354755A1 (en) * | 2001-08-07 | 2003-02-07 | Dspfactory Ltd. | Sound intelligibilty enhancement using a psychoacoustic model and an oversampled filterbank |
| US7447631B2 (en) * | 2002-06-17 | 2008-11-04 | Dolby Laboratories Licensing Corporation | Audio coding system using spectral hole filling |
| SE0202770D0 (en) * | 2002-09-18 | 2002-09-18 | Coding Technologies Sweden Ab | Method of reduction of aliasing is introduced by spectral envelope adjustment in real-valued filterbanks |
-
2010
- 2010-02-02 TW TW110100299A patent/TWI788752B/en active
- 2010-02-02 TW TW108109837A patent/TWI716833B/en active
- 2010-02-17 ES ES17164542T patent/ES2758249T3/en active Active
- 2010-02-17 BR BR122019022312-2A patent/BR122019022312B1/en active IP Right Grant
- 2010-02-17 BR BR122016027555-8A patent/BR122016027555B1/en active IP Right Grant
- 2010-02-17 KR KR1020217002363A patent/KR102292319B1/en active IP Right Grant
- 2010-02-17 KR KR1020217025958A patent/KR102412706B1/en active IP Right Grant
- 2010-02-17 BR BR122016027554-0A patent/BR122016027554B1/en active IP Right Grant
- 2010-02-17 HU HUE10703908A patent/HUE045955T2/en unknown
- 2010-02-17 BR BR122020017733-0A patent/BR122020017733B1/en active IP Right Grant
- 2010-02-17 KR KR1020207000976A patent/KR102210144B1/en active IP Right Grant
- 2010-02-17 HU HUE17164542A patent/HUE046532T2/en unknown
- 2010-02-17 HU HUE17167275A patent/HUE046719T2/en unknown
- 2010-02-17 KR KR1020197023899A patent/KR102068464B1/en active IP Right Grant
- 2010-02-17 BR BR122019023527-9A patent/BR122019023527B1/en not_active IP Right Cessation
- 2010-02-17 ES ES17167275T patent/ES2748579T3/en active Active
- 2010-02-17 BR BR122019023520-1A patent/BR122019023520B1/en active IP Right Grant
- 2010-02-17 ES ES10703908T patent/ES2751087T3/en active Active
-
2018
- 2018-03-01 HK HK18102950.4A patent/HK1243561A1/en unknown
- 2018-03-02 HK HK18103022.6A patent/HK1244112A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| TWI716833B (en) | 2021-01-21 |
| KR20210012054A (en) | 2021-02-02 |
| HUE045955T2 (en) | 2020-01-28 |
| KR102292319B1 (en) | 2021-08-24 |
| KR102210144B1 (en) | 2021-02-01 |
| BR122016027555B1 (en) | 2021-04-20 |
| KR20200007091A (en) | 2020-01-21 |
| KR102068464B1 (en) | 2020-01-22 |
| BR122016027554B1 (en) | 2021-04-20 |
| BR122019023520B1 (en) | 2021-04-27 |
| TWI788752B (en) | 2023-01-01 |
| HUE046532T2 (en) | 2020-03-30 |
| TW201926893A (en) | 2019-07-01 |
| BR122019022312B1 (en) | 2021-04-27 |
| HK1243561A1 (en) | 2018-07-13 |
| KR20210104931A (en) | 2021-08-25 |
| BR122019023527B1 (en) | 2021-04-20 |
| TW202119758A (en) | 2021-05-16 |
| ES2758249T3 (en) | 2020-05-04 |
| KR20190099094A (en) | 2019-08-23 |
| HUE046719T2 (en) | 2020-03-30 |
| KR102412706B1 (en) | 2022-06-27 |
| ES2748579T3 (en) | 2020-03-17 |
| BR122016027554A2 (en) | 2019-08-27 |
| ES2751087T3 (en) | 2020-03-30 |
| BR122016027555A2 (en) | 2019-08-27 |
| BR122020017733B1 (en) | 2021-01-26 |
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