BR112012018291A2 - uso de decorrelação de múltiplos canais para mistura ascendente de múltiplos canais aprimorada - Google Patents
uso de decorrelação de múltiplos canais para mistura ascendente de múltiplos canais aprimoradaInfo
- Publication number
- BR112012018291A2 BR112012018291A2 BR112012018291A BR112012018291A BR112012018291A2 BR 112012018291 A2 BR112012018291 A2 BR 112012018291A2 BR 112012018291 A BR112012018291 A BR 112012018291A BR 112012018291 A BR112012018291 A BR 112012018291A BR 112012018291 A2 BR112012018291 A2 BR 112012018291A2
- Authority
- BR
- Brazil
- Prior art keywords
- channel
- uplift
- linear equations
- enhanced
- audio signals
- Prior art date
Links
Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
Abstract
uso de decorrelação de múltiplos canais para mistura ascendente de múltiplos canais aprimorada. a presente invenção refere-se a um sistema de equações lineares que é usado para misturar de modo ascendente um número de n de sinal de áudio para gerar um número grande m de sinais de áudio que são psicoacusticamente descorrelacionados com relação um a outro e que podem ser usados para aprimorar a representação de um campo de som difuso. as equações lineares são definidas por uma matriz que especifica um conjunto de vetores em um espaço m dimensional que são substancialmente ortagonais entrei si. métodos para derivar o sistema de equações lineares são revelados.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US29769910P | 2010-01-22 | 2010-01-22 | |
US61/297,699 | 2010-01-22 | ||
PCT/US2011/020561 WO2011090834A1 (en) | 2010-01-22 | 2011-01-07 | Using multichannel decorrelation for improved multichannel upmixing |
Publications (2)
Publication Number | Publication Date |
---|---|
BR112012018291A2 true BR112012018291A2 (pt) | 2018-06-05 |
BR112012018291B1 BR112012018291B1 (pt) | 2020-10-27 |
Family
ID=43766522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR112012018291-9A BR112012018291B1 (pt) | 2010-01-22 | 2011-01-07 | Método para derivar sinais de saída de áudio, método para obter uma matriz de coeficientes para um sistema de equações lineares, aparelho e meio de armazenamento para gravar um método |
Country Status (12)
Country | Link |
---|---|
US (1) | US9269360B2 (pt) |
EP (1) | EP2526547B1 (pt) |
JP (1) | JP5612125B2 (pt) |
KR (1) | KR101380167B1 (pt) |
CN (1) | CN102714039B (pt) |
AR (1) | AR081098A1 (pt) |
BR (1) | BR112012018291B1 (pt) |
ES (1) | ES2588222T3 (pt) |
MX (1) | MX2012008403A (pt) |
RU (1) | RU2519045C2 (pt) |
TW (1) | TWI444989B (pt) |
WO (1) | WO2011090834A1 (pt) |
Families Citing this family (23)
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JP2011199847A (ja) * | 2010-02-25 | 2011-10-06 | Ricoh Co Ltd | 会議システムの端末装置、会議システム |
WO2013064957A1 (en) * | 2011-11-01 | 2013-05-10 | Koninklijke Philips Electronics N.V. | Audio object encoding and decoding |
CN104584588B (zh) * | 2012-07-16 | 2017-03-29 | 杜比国际公司 | 用于渲染音频声场表示以供音频回放的方法和设备 |
WO2014101242A1 (zh) * | 2012-12-31 | 2014-07-03 | 华为技术有限公司 | 报告信道状态信息csi的方法、用户设备和基站 |
GB2509533B (en) * | 2013-01-07 | 2017-08-16 | Meridian Audio Ltd | Group delay correction in acoustic transducer systems |
TWI618050B (zh) | 2013-02-14 | 2018-03-11 | 杜比實驗室特許公司 | 用於音訊處理系統中之訊號去相關的方法及設備 |
TWI618051B (zh) | 2013-02-14 | 2018-03-11 | 杜比實驗室特許公司 | 用於利用估計之空間參數的音頻訊號增強的音頻訊號處理方法及裝置 |
US9830917B2 (en) | 2013-02-14 | 2017-11-28 | Dolby Laboratories Licensing Corporation | Methods for audio signal transient detection and decorrelation control |
KR101729930B1 (ko) | 2013-02-14 | 2017-04-25 | 돌비 레버러토리즈 라이쎈싱 코오포레이션 | 업믹스된 오디오 신호들의 채널간 코히어런스를 제어하기 위한 방법 |
KR101760248B1 (ko) | 2013-05-24 | 2017-07-21 | 돌비 인터네셔널 에이비 | 오디오 오브젝트들을 포함한 오디오 장면들의 효율적 코딩 |
CN109712630B (zh) | 2013-05-24 | 2023-05-30 | 杜比国际公司 | 包括音频对象的音频场景的高效编码 |
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 |
EP3053359B1 (en) * | 2013-10-03 | 2017-08-30 | Dolby Laboratories Licensing Corporation | Adaptive diffuse signal generation in an upmixer |
EP3127109B1 (en) | 2014-04-01 | 2018-03-14 | Dolby International AB | Efficient coding of audio scenes comprising audio objects |
CN105336332A (zh) | 2014-07-17 | 2016-02-17 | 杜比实验室特许公司 | 分解音频信号 |
CN104484559B (zh) * | 2014-12-09 | 2017-07-04 | 大连楼兰科技股份有限公司 | 数字信号的解析方法及其解析装置 |
CN105992120B (zh) | 2015-02-09 | 2019-12-31 | 杜比实验室特许公司 | 音频信号的上混音 |
WO2016141023A1 (en) * | 2015-03-03 | 2016-09-09 | Dolby Laboratories Licensing Corporation | Enhancement of spatial audio signals by modulated decorrelation |
JP6202076B2 (ja) * | 2015-12-07 | 2017-09-27 | オンキヨー株式会社 | 音声処理装置 |
EP3382703A1 (en) | 2017-03-31 | 2018-10-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and methods for processing an audio signal |
CN114303395A (zh) * | 2019-09-03 | 2022-04-08 | 杜比实验室特许公司 | 具有解相关分量的音频滤波器组 |
US11533560B2 (en) | 2019-11-15 | 2022-12-20 | Boomcloud 360 Inc. | Dynamic rendering device metadata-informed audio enhancement system |
GB202207289D0 (en) | 2019-12-17 | 2022-06-29 | Cirrus Logic Int Semiconductor Ltd | Two-way microphone system using loudspeaker as one of the microphones |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
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SE0202159D0 (sv) * | 2001-07-10 | 2002-07-09 | Coding Technologies Sweden Ab | Efficientand scalable parametric stereo coding for low bitrate applications |
ES2271654T3 (es) * | 2002-08-07 | 2007-04-16 | Dolby Laboratories Licensing Corporation | Conversion espacial de canales de audio. |
DE10351793B4 (de) * | 2003-11-06 | 2006-01-12 | Herbert Buchner | Adaptive Filtervorrichtung und Verfahren zum Verarbeiten eines akustischen Eingangssignals |
SE0400998D0 (sv) | 2004-04-16 | 2004-04-16 | Cooding Technologies Sweden Ab | Method for representing multi-channel audio signals |
JP4335752B2 (ja) * | 2004-06-15 | 2009-09-30 | 三菱電機株式会社 | 擬似ステレオ信号生成装置および擬似ステレオ信号生成プログラム |
WO2006126858A2 (en) * | 2005-05-26 | 2006-11-30 | Lg Electronics Inc. | Method of encoding and decoding an audio signal |
US8284961B2 (en) * | 2005-07-15 | 2012-10-09 | Panasonic Corporation | Signal processing device |
US20070055510A1 (en) | 2005-07-19 | 2007-03-08 | Johannes Hilpert | Concept for bridging the gap between parametric multi-channel audio coding and matrixed-surround multi-channel coding |
CN101233570B (zh) | 2005-07-29 | 2011-06-22 | Lg电子株式会社 | 生成经编码的音频信号的方法以及处理音频信号的方法 |
KR101218776B1 (ko) * | 2006-01-11 | 2013-01-18 | 삼성전자주식회사 | 다운믹스된 신호로부터 멀티채널 신호 생성방법 및 그 기록매체 |
US8712061B2 (en) * | 2006-05-17 | 2014-04-29 | Creative Technology Ltd | Phase-amplitude 3-D stereo encoder and decoder |
DE102006050068B4 (de) | 2006-10-24 | 2010-11-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zum Erzeugen eines Umgebungssignals aus einem Audiosignal, Vorrichtung und Verfahren zum Ableiten eines Mehrkanal-Audiosignals aus einem Audiosignal und Computerprogramm |
US8705757B1 (en) * | 2007-02-23 | 2014-04-22 | Sony Computer Entertainment America, Inc. | Computationally efficient multi-resonator reverberation |
ES2452348T3 (es) * | 2007-04-26 | 2014-04-01 | Dolby International Ab | Aparato y procedimiento para sintetizar una señal de salida |
EP2162882B1 (en) * | 2007-06-08 | 2010-12-29 | Dolby Laboratories Licensing Corporation | Hybrid derivation of surround sound audio channels by controllably combining ambience and matrix-decoded signal components |
RU2497204C2 (ru) * | 2008-05-23 | 2013-10-27 | Конинклейке Филипс Электроникс Н.В. | Устройство параметрического стереофонического повышающего микширования, параметрический стереофонический декодер, устройство параметрического стереофонического понижающего микширования, параметрический стереофонический кодер |
-
2010
- 2010-12-17 TW TW099144459A patent/TWI444989B/zh active
-
2011
- 2011-01-07 KR KR1020127018733A patent/KR101380167B1/ko active IP Right Grant
- 2011-01-07 WO PCT/US2011/020561 patent/WO2011090834A1/en active Application Filing
- 2011-01-07 US US13/519,313 patent/US9269360B2/en active Active
- 2011-01-07 RU RU2012134496/08A patent/RU2519045C2/ru active
- 2011-01-07 EP EP11700706.2A patent/EP2526547B1/en active Active
- 2011-01-07 BR BR112012018291-9A patent/BR112012018291B1/pt active IP Right Grant
- 2011-01-07 JP JP2012548982A patent/JP5612125B2/ja active Active
- 2011-01-07 MX MX2012008403A patent/MX2012008403A/es active IP Right Grant
- 2011-01-07 ES ES11700706.2T patent/ES2588222T3/es active Active
- 2011-01-07 CN CN201180006576.3A patent/CN102714039B/zh active Active
- 2011-01-13 AR ARP110100104A patent/AR081098A1/es unknown
Also Published As
Publication number | Publication date |
---|---|
BR112012018291B1 (pt) | 2020-10-27 |
CN102714039A (zh) | 2012-10-03 |
EP2526547B1 (en) | 2016-07-06 |
US20120321105A1 (en) | 2012-12-20 |
JP2013517687A (ja) | 2013-05-16 |
RU2012134496A (ru) | 2014-02-27 |
RU2519045C2 (ru) | 2014-06-10 |
US9269360B2 (en) | 2016-02-23 |
AR081098A1 (es) | 2012-06-13 |
KR20120102127A (ko) | 2012-09-17 |
ES2588222T3 (es) | 2016-10-31 |
EP2526547A1 (en) | 2012-11-28 |
JP5612125B2 (ja) | 2014-10-22 |
MX2012008403A (es) | 2012-08-15 |
TW201140561A (en) | 2011-11-16 |
TWI444989B (zh) | 2014-07-11 |
WO2011090834A1 (en) | 2011-07-28 |
KR101380167B1 (ko) | 2014-04-02 |
CN102714039B (zh) | 2014-09-10 |
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Legal Events
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B06F | Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette] | ||
B06U | Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 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] |
Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 07/01/2011, OBSERVADAS AS CONDICOES LEGAIS. |