CA2808226C - Codage audio multicanaux - Google Patents
Codage audio multicanaux Download PDFInfo
- Publication number
- CA2808226C CA2808226C CA2808226A CA2808226A CA2808226C CA 2808226 C CA2808226 C CA 2808226C CA 2808226 A CA2808226 A CA 2808226A CA 2808226 A CA2808226 A CA 2808226A CA 2808226 C CA2808226 C CA 2808226C
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- audio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Landscapes
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Stereophonic System (AREA)
Abstract
Linvention concerne une méthode permettant de décoder des canaux audio codés (M) représentant des canaux audio (N) et un ensemble dun ou de plusieurs paramètres spatiaux, un ou plusieurs des paramètres spatiaux étant codés de façon différentielle. La méthode comprend ceci : recevoir les canaux audio codés (M) et les paramètres spatiaux; appliquer un processus de décodage différentiel à ou aux paramètres spatiaux codés de façon différentielle; dériver des signaux audio (N) des canaux codés (M), où chaque signal audio est divisé en plusieurs bandes de fréquence; et générer un signal de sortie multicanal à partir des signaux audio (N) et des paramètres spatiaux. Au moins un desdits signaux audio (N) est un signal corrélé dérivé dune combinaison pondérée dau moins un desdits canaux audio codés (M). Les paramètres spatiaux comprennent un premier paramètre indicateur de la quantité de signal non corrélé à combiner à un signal corrélé.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2917518A CA2917518C (fr) | 2004-03-01 | 2005-02-28 | Codage audio multicanaux |
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US54936804P | 2004-03-01 | 2004-03-01 | |
| US60/549,368 | 2004-03-01 | ||
| US57997404P | 2004-06-14 | 2004-06-14 | |
| US60/579,974 | 2004-06-14 | ||
| US58825604P | 2004-07-14 | 2004-07-14 | |
| US60/588,256 | 2004-07-14 | ||
| CA2556575A CA2556575C (fr) | 2004-03-01 | 2005-02-28 | Codage audio multicanaux |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2556575A Division CA2556575C (fr) | 2004-03-01 | 2005-02-28 | Codage audio multicanaux |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2917518A Division CA2917518C (fr) | 2004-03-01 | 2005-02-28 | Codage audio multicanaux |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2808226A1 CA2808226A1 (fr) | 2005-09-15 |
| CA2808226C true CA2808226C (fr) | 2016-07-19 |
Family
ID=37818223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2808226A Expired - Lifetime CA2808226C (fr) | 2004-03-01 | 2005-02-28 | Codage audio multicanaux |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101552007B (fr) |
| CA (1) | CA2808226C (fr) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102986254B (zh) * | 2010-07-12 | 2015-06-17 | 华为技术有限公司 | 音频信号产生装置 |
| WO2012138594A1 (fr) | 2011-04-08 | 2012-10-11 | Dolby Laboratories Licensing Corporation | Configuration automatique de métadonnées à utiliser dans le mixage de programmes audio de deux trains de bits codés |
| ES2643789T3 (es) | 2013-05-24 | 2017-11-24 | Dolby International Ab | Codificación eficiente de escenas de audio que comprenden objetos de audio |
| US9521501B2 (en) * | 2013-09-12 | 2016-12-13 | Dolby Laboratories Licensing Corporation | Loudness adjustment for downmixed audio content |
| EP3561809B1 (fr) * | 2013-09-12 | 2023-11-22 | Dolby International AB | Procédé de décodage et décodeur. |
| TWI557724B (zh) * | 2013-09-27 | 2016-11-11 | 杜比實驗室特許公司 | 用於將 n 聲道音頻節目編碼之方法、用於恢復 n 聲道音頻節目的 m 個聲道之方法、被配置成將 n 聲道音頻節目編碼之音頻編碼器及被配置成執行 n 聲道音頻節目的恢復之解碼器 |
| WO2015166693A1 (fr) * | 2014-05-01 | 2015-11-05 | 日本電信電話株式会社 | Dispositif de codage, dispositif de décodage, procédé de codage, procédé de décodage, programme de codage, programme de décodage, et support d'enregistrement |
| RU2727799C1 (ru) * | 2016-11-08 | 2020-07-24 | Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф. | Устройство и способ понижающего или повышающего микширования многоканального сигнала с использованием фазовой компенсации |
| CN112037803B (zh) * | 2020-05-08 | 2023-09-29 | 珠海市杰理科技股份有限公司 | 音频编码方法及装置、电子设备、存储介质 |
| CN112885329B (zh) * | 2021-02-02 | 2023-10-31 | 广州广哈通信股份有限公司 | 一种提高混音音质的控制方法、装置及存储介质 |
| CN115691514B (zh) * | 2021-07-29 | 2026-01-02 | 华为技术有限公司 | 一种多声道信号的编解码方法和装置 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU8053691A (en) * | 1990-06-15 | 1992-01-07 | Auris Corp. | Method for eliminating the precedence effect in stereophonic sound systems and recording made with said method |
| WO2003069954A2 (fr) * | 2002-02-18 | 2003-08-21 | Koninklijke Philips Electronics N.V. | Codage audio parametrique |
| ES2300567T3 (es) * | 2002-04-22 | 2008-06-16 | Koninklijke Philips Electronics N.V. | Representacion parametrica de audio espacial. |
-
2005
- 2005-02-28 CN CN200910138855XA patent/CN101552007B/zh not_active Expired - Lifetime
- 2005-02-28 CA CA2808226A patent/CA2808226C/fr not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2808226A1 (fr) | 2005-09-15 |
| CN101552007B (zh) | 2013-06-05 |
| CN101552007A (zh) | 2009-10-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11308969B2 (en) | Methods and apparatus for reconstructing audio signals with decorrelation and differentially coded parameters | |
| CA2808226A1 (fr) | Codage audio multicanaux |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20130227 |