BR112015019526A2 - método e aparelho para aprimorar a diretividade de um sinal ambisonics de 1a ordem - Google Patents
método e aparelho para aprimorar a diretividade de um sinal ambisonics de 1a ordemInfo
- Publication number
- BR112015019526A2 BR112015019526A2 BR112015019526A BR112015019526A BR112015019526A2 BR 112015019526 A2 BR112015019526 A2 BR 112015019526A2 BR 112015019526 A BR112015019526 A BR 112015019526A BR 112015019526 A BR112015019526 A BR 112015019526A BR 112015019526 A2 BR112015019526 A2 BR 112015019526A2
- Authority
- BR
- Brazil
- Prior art keywords
- directivity
- signal
- ambisonics
- signals
- improving
- Prior art date
Links
- 230000008447 perception Effects 0.000 abstract 1
Classifications
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- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/15—Correlation function computation including computation of convolution operations
- G06F17/156—Correlation function computation including computation of convolution operations using a domain transform, e.g. Fourier transform, polynomial transform, number theoretic transform
-
- 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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
-
- 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
- H04S2400/11—Positioning of individual sound objects, e.g. moving airplane, within a sound field
-
- 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
- H04S2400/15—Aspects of sound capture and related signal processing for recording or reproduction
-
- 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)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Mathematical Physics (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- General Physics & Mathematics (AREA)
- Data Mining & Analysis (AREA)
- Theoretical Computer Science (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Quality & Reliability (AREA)
- Computing Systems (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Algebra (AREA)
- Circuit For Audible Band Transducer (AREA)
- Stereophonic System (AREA)
- Stereophonic Arrangements (AREA)
Abstract
resumo método e aparelho para aprimorar a diretividade de um sinal ambisonics de 1a ordem trata-se de gravações de microfones que proporcionam sinais ambisonics de 1ª ordem, denominados sinais de formato b, que oferecem uma percepção limitada de diretividade sonora. as fontes de som são percebidas mais amplas do que elas realmente são, especialmente para posições de escuta fora de centro, e as fontes de som são geralmente localizadas de modo que sejam provenientes das posições de alto-falante mais próximas. em um método e aparelho para aprimorar a diretividade de sinais ambisonics de 1ª ordem, informações adicionais de diretividade (22, 23) são extraídas (sfa) a partir do sinal de entrada ambisonics de ordem inferior (10). as informações adicionais de diretividade são usadas para estimar coeficientes ambisonics de ordem superior (25a), que, então, são combinados (cs) com os coeficientes do sinal de entrada. logo, aprimora-se a diretividade do sinal ambisonics, levando a uma precisão aumentada de localização de fonte espacial quando o sinal ambisonics for decodificado em sinais de alto-falante. o sinal de saída resultante tem mais energia do que o sinal de entrada.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13305352.0 | 2013-03-22 | ||
| EP20130305352 EP2782094A1 (en) | 2013-03-22 | 2013-03-22 | Method and apparatus for enhancing directivity of a 1st order Ambisonics signal |
| PCT/EP2014/055313 WO2014147029A1 (en) | 2013-03-22 | 2014-03-17 | Method and apparatus for enhancing directivity of a 1st order ambisonics signal |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| BR112015019526A2 true BR112015019526A2 (pt) | 2017-07-18 |
| BR112015019526A8 BR112015019526A8 (pt) | 2017-12-05 |
| BR112015019526B1 BR112015019526B1 (pt) | 2021-12-07 |
Family
ID=48095764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR112015019526-1A BR112015019526B1 (pt) | 2013-03-22 | 2014-03-17 | MÉTODO E APARELHO PARA APRIMORAR A DIRETIVIDADE DE UM SINAL AMBISONICS DE 1ª ORDEM E MEIO DE ARMAZENAMENTO LEGÍVEL POR COMPUTADOR NÃO TRANSITÓRIO. |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US9838822B2 (pt) |
| EP (2) | EP2782094A1 (pt) |
| JP (1) | JP6342986B2 (pt) |
| KR (1) | KR102208258B1 (pt) |
| CN (1) | CN105051813B (pt) |
| AU (1) | AU2014234480B2 (pt) |
| BR (1) | BR112015019526B1 (pt) |
| TW (1) | TWI646847B (pt) |
| WO (1) | WO2014147029A1 (pt) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2665208A1 (en) | 2012-05-14 | 2013-11-20 | Thomson Licensing | Method and apparatus for compressing and decompressing a Higher Order Ambisonics signal representation |
| DE102013223201B3 (de) * | 2013-11-14 | 2015-05-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren und Vorrichtung zum Komprimieren und Dekomprimieren von Schallfelddaten eines Gebietes |
| US10134403B2 (en) * | 2014-05-16 | 2018-11-20 | Qualcomm Incorporated | Crossfading between higher order ambisonic signals |
| US9712936B2 (en) | 2015-02-03 | 2017-07-18 | Qualcomm Incorporated | Coding higher-order ambisonic audio data with motion stabilization |
| US10187740B2 (en) * | 2016-09-23 | 2019-01-22 | Apple Inc. | Producing headphone driver signals in a digital audio signal processing binaural rendering environment |
| GB2554446A (en) * | 2016-09-28 | 2018-04-04 | Nokia Technologies Oy | Spatial audio signal format generation from a microphone array using adaptive capture |
| CN106960672B (zh) * | 2017-03-30 | 2020-08-21 | 国家计算机网络与信息安全管理中心 | 一种立体声音频的带宽扩展方法与装置 |
| US10390166B2 (en) * | 2017-05-31 | 2019-08-20 | Qualcomm Incorporated | System and method for mixing and adjusting multi-input ambisonics |
| US10015618B1 (en) * | 2017-08-01 | 2018-07-03 | Google Llc | Incoherent idempotent ambisonics rendering |
| CN111630593B (zh) | 2018-01-18 | 2021-12-28 | 杜比实验室特许公司 | 用于译码声场表示信号的方法和装置 |
| CN108845292B (zh) * | 2018-06-15 | 2020-11-27 | 北京时代拓灵科技有限公司 | 一种声源定位的方法及装置 |
| CN110719564B (zh) * | 2018-07-13 | 2021-06-08 | 海信视像科技股份有限公司 | 音效处理方法和装置 |
| CN112567769B (zh) * | 2018-08-21 | 2022-11-04 | 索尼公司 | 音频再现装置、音频再现方法和存储介质 |
| WO2020115311A1 (en) * | 2018-12-07 | 2020-06-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus, method and computer program for encoding, decoding, scene processing and other procedures related to dirac based spatial audio coding using low-order, mid-order and high-order components generators |
| CN113673317B (zh) * | 2021-07-12 | 2023-04-07 | 电子科技大学 | 基于原子范数最小化可降维的二维离格doa估计方法 |
| JP2024026010A (ja) * | 2022-08-15 | 2024-02-28 | パナソニックＩｐマネジメント株式会社 | 音場再現装置、音場再現方法及び音場再現システム |
| US20240098439A1 (en) * | 2022-09-15 | 2024-03-21 | Sony Interactive Entertainment Inc. | Multi-order optimized ambisonics encoding |
| JP2024048967A (ja) * | 2022-09-28 | 2024-04-09 | パナソニックＩｐマネジメント株式会社 | 音場再現装置、音場再現方法及び音場再現システム |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1512514A (en) | 1974-07-12 | 1978-06-01 | Nat Res Dev | Microphone assemblies |
| GB9204485D0 (en) | 1992-03-02 | 1992-04-15 | Trifield Productions Ltd | Surround sound apparatus |
| US6356639B1 (en) * | 1997-04-11 | 2002-03-12 | Matsushita Electric Industrial Co., Ltd. | Audio decoding apparatus, signal processing device, sound image localization device, sound image control method, audio signal processing device, and audio signal high-rate reproduction method used for audio visual equipment |
| AUPP272598A0 (en) * | 1998-03-31 | 1998-04-23 | Lake Dsp Pty Limited | Wavelet conversion of 3-d audio signals |
| AUPR647501A0 (en) * | 2001-07-19 | 2001-08-09 | Vast Audio Pty Ltd | Recording a three dimensional auditory scene and reproducing it for the individual listener |
| CA2354858A1 (en) | 2001-08-08 | 2003-02-08 | Dspfactory Ltd. | Subband directional audio signal processing using an oversampled filterbank |
| FR2844894B1 (fr) | 2002-09-23 | 2004-12-17 | Remy Henri Denis Bruno | Procede et systeme de traitement d'une representation d'un champ acoustique |
| FI118247B (fi) | 2003-02-26 | 2007-08-31 | Fraunhofer Ges Forschung | Menetelmä luonnollisen tai modifioidun tilavaikutelman aikaansaamiseksi monikanavakuuntelussa |
| ES2359752T3 (es) * | 2006-09-25 | 2011-05-26 | Dolby Laboratories Licensing Corporation | Resolución espacial mejorada del campo sonoro para sistemas de reproducción de audio multicanal mediante derivación de señales con términos angulares de orden superior. |
| US8180062B2 (en) * | 2007-05-30 | 2012-05-15 | Nokia Corporation | Spatial sound zooming |
| EP2205007B1 (en) * | 2008-12-30 | 2019-01-09 | Dolby International AB | Method and apparatus for three-dimensional acoustic field encoding and optimal reconstruction |
| EP2285139B1 (en) | 2009-06-25 | 2018-08-08 | Harpex Ltd. | Device and method for converting spatial audio signal |
| JP5773540B2 (ja) * | 2009-10-07 | 2015-09-02 | ザ・ユニバーシティ・オブ・シドニー | 記録された音場の再構築 |
| WO2011107951A1 (en) * | 2010-03-02 | 2011-09-09 | Nokia Corporation | Method and apparatus for upmixing a two-channel audio signal |
| NZ587483A (en) * | 2010-08-20 | 2012-12-21 | Ind Res Ltd | Holophonic speaker system with filters that are pre-configured based on acoustic transfer functions |
| US9271081B2 (en) * | 2010-08-27 | 2016-02-23 | Sonicemotion Ag | Method and device for enhanced sound field reproduction of spatially encoded audio input signals |
| CN101977349A (zh) | 2010-09-29 | 2011-02-16 | 华南理工大学 | Ambisonic声重发系统解码的优化改进方法 |
| EP2450880A1 (en) * | 2010-11-05 | 2012-05-09 | Thomson Licensing | Data structure for Higher Order Ambisonics audio data |
| EP2469741A1 (en) * | 2010-12-21 | 2012-06-27 | Thomson Licensing | Method and apparatus for encoding and decoding successive frames of an ambisonics representation of a 2- or 3-dimensional sound field |
| US9154877B2 (en) * | 2012-11-28 | 2015-10-06 | Qualcomm Incorporated | Collaborative sound system |
-
2013
- 2013-03-22 EP EP20130305352 patent/EP2782094A1/en not_active Withdrawn
-
2014
- 2014-03-17 AU AU2014234480A patent/AU2014234480B2/en active Active
- 2014-03-17 KR KR1020157025670A patent/KR102208258B1/ko active IP Right Grant
- 2014-03-17 JP JP2016503627A patent/JP6342986B2/ja active Active
- 2014-03-17 EP EP14710567.0A patent/EP2976769B1/en active Active
- 2014-03-17 CN CN201480015676.6A patent/CN105051813B/zh active Active
- 2014-03-17 BR BR112015019526-1A patent/BR112015019526B1/pt active IP Right Grant
- 2014-03-17 US US14/779,326 patent/US9838822B2/en active Active
- 2014-03-17 WO PCT/EP2014/055313 patent/WO2014147029A1/en active Application Filing
- 2014-03-21 TW TW103110577A patent/TWI646847B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016517033A (ja) | 2016-06-09 |
| EP2976769B1 (en) | 2017-02-22 |
| CN105051813B (zh) | 2019-03-22 |
| US20160057556A1 (en) | 2016-02-25 |
| EP2782094A1 (en) | 2014-09-24 |
| TW201442522A (zh) | 2014-11-01 |
| KR20150134336A (ko) | 2015-12-01 |
| AU2014234480B2 (en) | 2019-11-21 |
| AU2014234480A1 (en) | 2015-08-13 |
| BR112015019526A8 (pt) | 2017-12-05 |
| KR102208258B1 (ko) | 2021-01-27 |
| EP2976769A1 (en) | 2016-01-27 |
| CN105051813A (zh) | 2015-11-11 |
| JP6342986B2 (ja) | 2018-06-13 |
| TWI646847B (zh) | 2019-01-01 |
| US9838822B2 (en) | 2017-12-05 |
| WO2014147029A1 (en) | 2014-09-25 |
| BR112015019526B1 (pt) | 2021-12-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B25A | Requested transfer of rights approved |
Owner name: DOLBY INTERNATIONAL AB (NL) |
|
| 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 17/03/2014, OBSERVADAS AS CONDICOES LEGAIS. |
|
| B25G | Requested change of headquarter approved |
Owner name: DOLBY INTERNATIONAL AB (IE) |