BRPI0509110A - método e dispositivo para processar um sinal estéreo, aparelhos codificador e decodificador, e, sistema de áudio - Google Patents
método e dispositivo para processar um sinal estéreo, aparelhos codificador e decodificador, e, sistema de áudioInfo
- Publication number
- BRPI0509110A BRPI0509110A BRPI0509110-1A BRPI0509110A BRPI0509110A BR PI0509110 A BRPI0509110 A BR PI0509110A BR PI0509110 A BRPI0509110 A BR PI0509110A BR PI0509110 A BRPI0509110 A BR PI0509110A
- Authority
- BR
- Brazil
- Prior art keywords
- stereo signal
- processing
- encoder
- audio system
- matrix
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 4
- 239000011159 matrix material Substances 0.000 abstract 4
- 230000002441 reversible effect Effects 0.000 abstract 1
- 230000005236 sound signal Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
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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
-
- 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
- G10L19/02—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 using spectral analysis, e.g. transform vocoders or subband vocoders
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation
-
- 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
- H04S2420/03—Application of parametric coding in stereophonic audio systems
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computational Linguistics (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Health & Medical Sciences (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Stereophonic System (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
MéTODO E DISPOSITIVO PARA PROCESSAR UM SINAL ESTéREO, APARELHOS CODIFICADOR E DECODIFICADOR, E, SISTEMA DE áUDIO Método para processar um sinal estéreo incluindo: codificar um sinal de áudio de N canais em um sinal estéreo (L~ 0~ R~ 0~) e parâmetros espaciais (w~ 1~, w~ r~), processar o sinal estéreo usando os parâmetros espaciais para gerar um sinal estéreo processado (L~ 0w~, R~ 0w~). A matriz do sinal estéreo processado pode ser descrita como a matriz do sinal estéreo, multiplicada por uma matriz de filtro (H) qual elemento são funções de filtro (H~ 1~, H~ 2~, H~ 3~, H~ 4~) operados com parâmetros espaciais w~ 1~, w~ r~) e uma constante (a). As funções de filtro são invariáveis no tempo e selecionadas de forma que a matriz seja não reversível.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04101405.1 | 2004-04-05 | ||
EP04101405 | 2004-04-05 | ||
EP04103367 | 2004-07-14 | ||
EP04103367.1 | 2004-07-14 | ||
PCT/IB2005/051065 WO2005098826A1 (en) | 2004-04-05 | 2005-03-30 | Method, device, encoder apparatus, decoder apparatus and audio system |
Publications (3)
Publication Number | Publication Date |
---|---|
BRPI0509110A true BRPI0509110A (pt) | 2007-08-28 |
BRPI0509110A8 BRPI0509110A8 (pt) | 2016-02-10 |
BRPI0509110B1 BRPI0509110B1 (pt) | 2019-07-09 |
Family
ID=34962191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0509110-1A BRPI0509110B1 (pt) | 2004-04-05 | 2005-03-30 | Método e dispositivo para processar um sinal estéreo, aparelhos codificador e decodificador, e, sistema de áudio |
Country Status (12)
Country | Link |
---|---|
US (1) | US9992599B2 (pt) |
EP (1) | EP1735779B1 (pt) |
JP (1) | JP5284638B2 (pt) |
KR (1) | KR101183862B1 (pt) |
CN (1) | CN1947172B (pt) |
BR (1) | BRPI0509110B1 (pt) |
ES (1) | ES2426917T3 (pt) |
MX (1) | MXPA06011397A (pt) |
PL (1) | PL1735779T3 (pt) |
RU (1) | RU2396608C2 (pt) |
TW (1) | TWI455614B (pt) |
WO (1) | WO2005098826A1 (pt) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
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ES2373728T3 (es) | 2004-07-14 | 2012-02-08 | Koninklijke Philips Electronics N.V. | Método, dispositivo, aparato codificador, aparato decodificador y sistema de audio. |
JP4988716B2 (ja) | 2005-05-26 | 2012-08-01 | エルジー エレクトロニクス インコーポレイティド | オーディオ信号のデコーディング方法及び装置 |
EP1905002B1 (en) | 2005-05-26 | 2013-05-22 | LG Electronics Inc. | Method and apparatus for decoding audio signal |
WO2007007263A2 (en) * | 2005-07-14 | 2007-01-18 | Koninklijke Philips Electronics N.V. | Audio encoding and decoding |
US8626503B2 (en) | 2005-07-14 | 2014-01-07 | Erik Gosuinus Petrus Schuijers | Audio encoding and decoding |
JP5587551B2 (ja) * | 2005-09-13 | 2014-09-10 | コーニンクレッカ フィリップス エヌ ヴェ | オーディオ符号化 |
KR100803212B1 (ko) * | 2006-01-11 | 2008-02-14 | 삼성전자주식회사 | 스케일러블 채널 복호화 방법 및 장치 |
EP1974347B1 (en) * | 2006-01-19 | 2014-08-06 | LG Electronics Inc. | Method and apparatus for processing a media signal |
WO2007091850A1 (en) | 2006-02-07 | 2007-08-16 | Lg Electronics Inc. | Apparatus and method for encoding/decoding signal |
CN101390443B (zh) * | 2006-02-21 | 2010-12-01 | 皇家飞利浦电子股份有限公司 | 音频编码和解码 |
WO2008046530A2 (en) | 2006-10-16 | 2008-04-24 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for multi -channel parameter transformation |
EP2054875B1 (en) | 2006-10-16 | 2011-03-23 | Dolby Sweden AB | Enhanced coding and parameter representation of multichannel downmixed object coding |
WO2008063035A1 (en) * | 2006-11-24 | 2008-05-29 | Lg Electronics Inc. | Method for encoding and decoding object-based audio signal and apparatus thereof |
US8855795B2 (en) | 2007-01-09 | 2014-10-07 | Mediatek Inc. | Multiple output audio system |
US8615316B2 (en) | 2008-01-23 | 2013-12-24 | Lg Electronics Inc. | Method and an apparatus for processing an audio signal |
EP2083584B1 (en) | 2008-01-23 | 2010-09-15 | LG Electronics Inc. | A method and an apparatus for processing an audio signal |
KR100998913B1 (ko) * | 2008-01-23 | 2010-12-08 | 엘지전자 주식회사 | 오디오 신호의 처리 방법 및 이의 장치 |
EP2175670A1 (en) * | 2008-10-07 | 2010-04-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Binaural rendering of a multi-channel audio signal |
JP5511848B2 (ja) | 2009-12-28 | 2014-06-04 | パナソニック株式会社 | 音声符号化装置および音声符号化方法 |
CN102280107B (zh) * | 2010-06-10 | 2013-01-23 | 华为技术有限公司 | 边带残差信号生成方法及装置 |
WO2012040898A1 (en) * | 2010-09-28 | 2012-04-05 | Huawei Technologies Co., Ltd. | Device and method for postprocessing decoded multi-channel audio signal or decoded stereo signal |
ES2643163T3 (es) | 2010-12-03 | 2017-11-21 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Aparato y procedimiento para codificación de audio espacial basada en geometría |
CN103329565B (zh) * | 2011-01-05 | 2016-09-28 | 皇家飞利浦电子股份有限公司 | 音频***及其操作方法 |
EP2804176A1 (en) | 2013-05-13 | 2014-11-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio object separation from mixture signal using object-specific time/frequency resolutions |
EP2830046A1 (en) | 2013-07-22 | 2015-01-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for decoding an encoded audio signal to obtain modified output signals |
US9820073B1 (en) | 2017-05-10 | 2017-11-14 | Tls Corp. | Extracting a common signal from multiple audio signals |
Family Cites Families (24)
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US4095049A (en) * | 1976-03-15 | 1978-06-13 | National Research Development Corporation | Non-rotationally-symmetric surround-sound encoding system |
US4236039A (en) * | 1976-07-19 | 1980-11-25 | National Research Development Corporation | Signal matrixing for directional reproduction of sound |
DE4209544A1 (de) * | 1992-03-24 | 1993-09-30 | Inst Rundfunktechnik Gmbh | Verfahren zum Übertragen oder Speichern digitalisierter, mehrkanaliger Tonsignale |
JP2693893B2 (ja) * | 1992-03-30 | 1997-12-24 | 松下電器産業株式会社 | ステレオ音声符号化方法 |
JPH06165079A (ja) * | 1992-11-25 | 1994-06-10 | Matsushita Electric Ind Co Ltd | マルチチャンネルステレオ用ダウンミキシング装置 |
DE4409368A1 (de) * | 1994-03-18 | 1995-09-21 | Fraunhofer Ges Forschung | Verfahren zum Codieren mehrerer Audiosignale |
US5727119A (en) * | 1995-03-27 | 1998-03-10 | Dolby Laboratories Licensing Corporation | Method and apparatus for efficient implementation of single-sideband filter banks providing accurate measures of spectral magnitude and phase |
US5642423A (en) | 1995-11-22 | 1997-06-24 | Sony Corporation | Digital surround sound processor |
US6697491B1 (en) | 1996-07-19 | 2004-02-24 | Harman International Industries, Incorporated | 5-2-5 matrix encoder and decoder system |
SG54379A1 (en) | 1996-10-24 | 1998-11-16 | Sgs Thomson Microelectronics A | Audio decoder with an adaptive frequency domain downmixer |
EP0990368B1 (en) | 1997-05-08 | 2002-04-24 | STMicroelectronics Asia Pacific Pte Ltd. | Method and apparatus for frequency-domain downmixing with block-switch forcing for audio decoding functions |
US6173061B1 (en) * | 1997-06-23 | 2001-01-09 | Harman International Industries, Inc. | Steering of monaural sources of sound using head related transfer functions |
US6067361A (en) * | 1997-07-16 | 2000-05-23 | Sony Corporation | Method and apparatus for two channels of sound having directional cues |
US7292901B2 (en) * | 2002-06-24 | 2007-11-06 | Agere Systems Inc. | Hybrid multi-channel/cue coding/decoding of audio signals |
SE0202159D0 (sv) * | 2001-07-10 | 2002-07-09 | Coding Technologies Sweden Ab | Efficientand scalable parametric stereo coding for low bitrate applications |
US7039204B2 (en) * | 2002-06-24 | 2006-05-02 | Agere Systems Inc. | Equalization for audio mixing |
JP4322207B2 (ja) | 2002-07-12 | 2009-08-26 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | オーディオ符号化方法 |
US7447317B2 (en) * | 2003-10-02 | 2008-11-04 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V | Compatible multi-channel coding/decoding by weighting the downmix channel |
US7394903B2 (en) * | 2004-01-20 | 2008-07-01 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Apparatus and method for constructing a multi-channel output signal or for generating a downmix signal |
JPWO2005081229A1 (ja) * | 2004-02-25 | 2007-10-25 | 松下電器産業株式会社 | オーディオエンコーダ及びオーディオデコーダ |
US7805313B2 (en) * | 2004-03-04 | 2010-09-28 | Agere Systems Inc. | Frequency-based coding of channels in parametric multi-channel coding systems |
US20050247756A1 (en) | 2004-03-31 | 2005-11-10 | Frazer James T | Connection mechanism and method |
CN102122509B (zh) | 2004-04-05 | 2016-03-23 | 皇家飞利浦电子股份有限公司 | 多信道解码器和多信道解码方法 |
ES2373728T3 (es) * | 2004-07-14 | 2012-02-08 | Koninklijke Philips Electronics N.V. | Método, dispositivo, aparato codificador, aparato decodificador y sistema de audio. |
-
2005
- 2005-03-30 RU RU2006139068/09A patent/RU2396608C2/ru active
- 2005-03-30 CN CN200580012133XA patent/CN1947172B/zh active Active
- 2005-03-30 MX MXPA06011397A patent/MXPA06011397A/es active IP Right Grant
- 2005-03-30 KR KR1020067020272A patent/KR101183862B1/ko active IP Right Grant
- 2005-03-30 JP JP2007506884A patent/JP5284638B2/ja active Active
- 2005-03-30 EP EP05718592.8A patent/EP1735779B1/en active Active
- 2005-03-30 BR BRPI0509110-1A patent/BRPI0509110B1/pt active IP Right Grant
- 2005-03-30 WO PCT/IB2005/051065 patent/WO2005098826A1/en active Application Filing
- 2005-03-30 US US10/599,560 patent/US9992599B2/en active Active
- 2005-03-30 ES ES05718592T patent/ES2426917T3/es active Active
- 2005-03-30 PL PL05718592T patent/PL1735779T3/pl unknown
- 2005-04-01 TW TW094110514A patent/TWI455614B/zh active
Also Published As
Publication number | Publication date |
---|---|
RU2006139068A (ru) | 2008-05-20 |
BRPI0509110A8 (pt) | 2016-02-10 |
MXPA06011397A (es) | 2006-12-20 |
TW200611588A (en) | 2006-04-01 |
JP2007531916A (ja) | 2007-11-08 |
PL1735779T3 (pl) | 2014-01-31 |
ES2426917T3 (es) | 2013-10-25 |
US9992599B2 (en) | 2018-06-05 |
CN1947172A (zh) | 2007-04-11 |
KR20070001205A (ko) | 2007-01-03 |
EP1735779A1 (en) | 2006-12-27 |
EP1735779B1 (en) | 2013-06-19 |
CN1947172B (zh) | 2011-08-03 |
BRPI0509110B1 (pt) | 2019-07-09 |
TWI455614B (zh) | 2014-10-01 |
JP5284638B2 (ja) | 2013-09-11 |
US20070183601A1 (en) | 2007-08-09 |
WO2005098826A1 (en) | 2005-10-20 |
RU2396608C2 (ru) | 2010-08-10 |
KR101183862B1 (ko) | 2012-09-20 |
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Legal Events
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B25D | Requested change of name of applicant approved |
Owner name: KONINKLIJKE PHILIPS N. V. (NL) |
|
B25G | Requested change of headquarter approved |
Owner name: KONINKLIJKE PHILIPS N. V. (NL) |
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B06T | Formal requirements before examination [chapter 6.20 patent gazette] | ||
B07A | Application suspended after technical examination (opinion) [chapter 7.1 patent gazette] | ||
B07A | Application suspended after technical examination (opinion) [chapter 7.1 patent gazette] | ||
B09A | Decision: intention to grant [chapter 9.1 patent gazette] | ||
B16A | Patent or certificate of addition of invention granted [chapter 16.1 patent gazette] |
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