BR112012024528A2 - método e dispositivo para decodificar uma representação para campo de som de áudio para reprodução de áudio - Google Patents
método e dispositivo para decodificar uma representação para campo de som de áudio para reprodução de áudioInfo
- Publication number
- BR112012024528A2 BR112012024528A2 BR112012024528A BR112012024528A BR112012024528A2 BR 112012024528 A2 BR112012024528 A2 BR 112012024528A2 BR 112012024528 A BR112012024528 A BR 112012024528A BR 112012024528 A BR112012024528 A BR 112012024528A BR 112012024528 A2 BR112012024528 A2 BR 112012024528A2
- Authority
- BR
- Brazil
- Prior art keywords
- decoding
- sound field
- audio
- representation
- sym
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 5
- 239000011159 matrix material Substances 0.000 abstract 4
- 238000000354 decomposition reaction Methods 0.000 abstract 1
Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/30—Control circuits for electronic adaptation of the sound field
- H04S7/308—Electronic adaptation dependent on speaker or headphone connection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
- H04S2400/13—Aspects of volume control, not necessarily automatic, in stereophonic sound systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
- H04S2420/11—Application of ambisonics in stereophonic audio systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Acoustics & Sound (AREA)
- Mathematical Physics (AREA)
- Multimedia (AREA)
- Human Computer Interaction (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Health & Medical Sciences (AREA)
- Computational Linguistics (AREA)
- Mathematical Analysis (AREA)
- Theoretical Computer Science (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Optimization (AREA)
- General Physics & Mathematics (AREA)
- Algebra (AREA)
- Stereophonic System (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
método e dispositivo para decodificar uma representação para campo de som de áudio para reprodução de áudio. a presente invenção se refere a sinais de campo de som tais como, por exemplo, ambisonics que portam a representação de um campo de som desejado. o formato ambisonics é baseado em decomposição harmônica esférica do campo de som, e ambisonics de ordem mais elevada (hoa) usa harmônicas esféricas de pelo menos segunda ordem. entretanto, a configuração comumente usada dos altos-falantes são irregulares e levam a problemas na configuração do decodificador. um método aprimorado para decodificar uma representação do decodificador. um método aprimorado para decodificar uma representação para campo de som de áudio para reprodução de áudio compreende calcular (110) a função de ação panorâmica (w) usando um método geométrico baseado nas posições da pluralidade de alto-falantes e uma pluralidade de direções de fonte, calcular (120) a matriz de modo (<sym>) a partir das posições de alto-falante, calcular (130) a matriz de modo pseudo-inversa (<sym>) e decodificar (140) a representação para campo de som de áudio. a decodificação é baseada na matriz de decodificação (d) que é obtida a partir da função de ação panorâmica (w) e na matriz de modo pseudo-inversa (<sym>).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR122020001822-4A BR122020001822B1 (pt) | 2010-03-26 | 2011-03-25 | Método e dispositivo para decodificar uma representação para campo de som de áudio para reprodução de áudio e meio legível por computador |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10305316 | 2010-03-26 | ||
| EP10305316.1 | 2010-03-26 | ||
| PCT/EP2011/054644 WO2011117399A1 (en) | 2010-03-26 | 2011-03-25 | Method and device for decoding an audio soundfield representation for audio playback |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| BR112012024528A2 true BR112012024528A2 (pt) | 2016-09-06 |
| BR112012024528A8 BR112012024528A8 (pt) | 2017-12-05 |
| BR112012024528B1 BR112012024528B1 (pt) | 2021-05-11 |
Family
ID=43989831
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR122020001822-4A BR122020001822B1 (pt) | 2010-03-26 | 2011-03-25 | Método e dispositivo para decodificar uma representação para campo de som de áudio para reprodução de áudio e meio legível por computador |
| BR112012024528-7A BR112012024528B1 (pt) | 2010-03-26 | 2011-03-25 | método e dispositivo para decodificar uma representação para campo de som de áudio para reprodução de áudio e meio legível por computador |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR122020001822-4A BR122020001822B1 (pt) | 2010-03-26 | 2011-03-25 | Método e dispositivo para decodificar uma representação para campo de som de áudio para reprodução de áudio e meio legível por computador |
Country Status (12)
| Country | Link |
|---|---|
| US (10) | US9100768B2 (pt) |
| EP (1) | EP2553947B1 (pt) |
| JP (8) | JP5559415B2 (pt) |
| KR (9) | KR102622947B1 (pt) |
| CN (1) | CN102823277B (pt) |
| AU (1) | AU2011231565B2 (pt) |
| BR (2) | BR122020001822B1 (pt) |
| ES (1) | ES2472456T3 (pt) |
| HK (1) | HK1174763A1 (pt) |
| PL (1) | PL2553947T3 (pt) |
| PT (1) | PT2553947E (pt) |
| WO (1) | WO2011117399A1 (pt) |
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2011
- 2011-03-25 PT PT117099689T patent/PT2553947E/pt unknown
- 2011-03-25 KR KR1020217026627A patent/KR102622947B1/ko active IP Right Grant
- 2011-03-25 KR KR1020207008095A patent/KR102294460B1/ko active IP Right Grant
- 2011-03-25 JP JP2013500527A patent/JP5559415B2/ja active Active
- 2011-03-25 BR BR122020001822-4A patent/BR122020001822B1/pt active IP Right Grant
- 2011-03-25 AU AU2011231565A patent/AU2011231565B2/en active Active
- 2011-03-25 US US13/634,859 patent/US9100768B2/en active Active
- 2011-03-25 KR KR1020177031814A patent/KR101890229B1/ko active IP Right Grant
- 2011-03-25 EP EP11709968.9A patent/EP2553947B1/en active Active
- 2011-03-25 PL PL11709968T patent/PL2553947T3/pl unknown
- 2011-03-25 KR KR1020127025099A patent/KR101755531B1/ko active IP Right Grant
- 2011-03-25 KR KR1020247000412A patent/KR20240009530A/ko active Application Filing
- 2011-03-25 WO PCT/EP2011/054644 patent/WO2011117399A1/en active Application Filing
- 2011-03-25 CN CN201180016042.9A patent/CN102823277B/zh active Active
- 2011-03-25 KR KR1020197005396A patent/KR102018824B1/ko active IP Right Grant
- 2011-03-25 KR KR1020187023439A patent/KR101953279B1/ko active IP Right Grant
- 2011-03-25 KR KR1020177018317A patent/KR101795015B1/ko active IP Right Grant
- 2011-03-25 KR KR1020197025623A patent/KR102093390B1/ko active IP Right Grant
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