CN107222824B - 从高阶立体混响声音频信号解码立体声扬声器信号的方法和装置 - Google Patents

从高阶立体混响声音频信号解码立体声扬声器信号的方法和装置 Download PDF

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CN107222824B
CN107222824B CN201710587966.3A CN201710587966A CN107222824B CN 107222824 B CN107222824 B CN 107222824B CN 201710587966 A CN201710587966 A CN 201710587966A CN 107222824 B CN107222824 B CN 107222824B
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matrix
function
higher order
decoding
panning
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CN107222824A (zh
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F.基勒
J.贝姆
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Dolby International AB
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    • 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
    • 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
    • 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 
    • H04S1/00—Two-channel systems
    • H04S1/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/007—Two-channel systems in which the audio signals are in digital form
    • 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
    • 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
    • H04S2400/01—Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved
    • 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 
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Mathematical Physics (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • General Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Algebra (AREA)
  • Stereophonic System (AREA)
CN201710587966.3A 2012-03-28 2013-03-20 从高阶立体混响声音频信号解码立体声扬声器信号的方法和装置 Active CN107222824B (zh)

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EP12305356.3 2012-03-28
EP12305356.3A EP2645748A1 (en) 2012-03-28 2012-03-28 Method and apparatus for decoding stereo loudspeaker signals from a higher-order Ambisonics audio signal
CN201380016236.8A CN104205879B (zh) 2012-03-28 2013-03-20 从高阶立体混响声音频信号解码立体声扬声器信号的方法和装置

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CN201710587980.3A Active CN107172567B (zh) 2012-03-28 2013-03-20 从高阶立体混响声音频信号解码立体声扬声器信号的方法和装置
CN201380016236.8A Active CN104205879B (zh) 2012-03-28 2013-03-20 从高阶立体混响声音频信号解码立体声扬声器信号的方法和装置
CN201710587967.8A Active CN107135460B (zh) 2012-03-28 2013-03-20 从高阶立体混响声音频信号解码立体声扬声器信号的方法和装置
CN201710587968.2A Active CN107182022B (zh) 2012-03-28 2013-03-20 从高阶立体混响声音频信号解码立体声扬声器信号的方法和装置
CN201710587976.7A Active CN107241677B (zh) 2012-03-28 2013-03-20 从高阶立体混响声音频信号解码立体声扬声器信号的方法和装置

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CN201380016236.8A Active CN104205879B (zh) 2012-03-28 2013-03-20 从高阶立体混响声音频信号解码立体声扬声器信号的方法和装置
CN201710587967.8A Active CN107135460B (zh) 2012-03-28 2013-03-20 从高阶立体混响声音频信号解码立体声扬声器信号的方法和装置
CN201710587968.2A Active CN107182022B (zh) 2012-03-28 2013-03-20 从高阶立体混响声音频信号解码立体声扬声器信号的方法和装置
CN201710587976.7A Active CN107241677B (zh) 2012-03-28 2013-03-20 从高阶立体混响声音频信号解码立体声扬声器信号的方法和装置

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EP (4) EP2645748A1 (https=)
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KR (6) KR102481338B1 (https=)
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Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2637427A1 (en) * 2012-03-06 2013-09-11 Thomson Licensing Method and apparatus for playback of a higher-order ambisonics audio signal
EP2645748A1 (en) * 2012-03-28 2013-10-02 Thomson Licensing Method and apparatus for decoding stereo loudspeaker signals from a higher-order Ambisonics audio signal
US9495968B2 (en) 2013-05-29 2016-11-15 Qualcomm Incorporated Identifying sources from which higher order ambisonic audio data is generated
EP2866475A1 (en) * 2013-10-23 2015-04-29 Thomson Licensing Method for and apparatus for decoding an audio soundfield representation for audio playback using 2D setups
EP2879408A1 (en) 2013-11-28 2015-06-03 Thomson Licensing Method and apparatus for higher order ambisonics encoding and decoding using singular value decomposition
EP3143779B1 (en) * 2014-05-13 2020-10-07 Fraunhofer Gesellschaft zur Förderung der Angewand Apparatus and method for edge fading amplitude panning
US10770087B2 (en) 2014-05-16 2020-09-08 Qualcomm Incorporated Selecting codebooks for coding vectors decomposed from higher-order ambisonic audio signals
KR20250085845A (ko) * 2014-06-27 2025-06-12 돌비 인터네셔널 에이비 Hoa 데이터 프레임 표현의 압축을 위해 비차분 이득 값들을 표현하는 데 필요하게 되는 비트들의 최저 정수 개수를 결정하는 장치
US9747910B2 (en) * 2014-09-26 2017-08-29 Qualcomm Incorporated Switching between predictive and non-predictive quantization techniques in a higher order ambisonics (HOA) framework
US10063989B2 (en) 2014-11-11 2018-08-28 Google Llc Virtual sound systems and methods
WO2016172254A1 (en) 2015-04-21 2016-10-27 Dolby Laboratories Licensing Corporation Spatial audio signal manipulation
US10334387B2 (en) 2015-06-25 2019-06-25 Dolby Laboratories Licensing Corporation Audio panning transformation system and method
US9961467B2 (en) * 2015-10-08 2018-05-01 Qualcomm Incorporated Conversion from channel-based audio to HOA
US10249312B2 (en) 2015-10-08 2019-04-02 Qualcomm Incorporated Quantization of spatial vectors
CN116259324A (zh) * 2015-10-08 2023-06-13 杜比国际公司 用于压缩声音或声场表示的分层编解码
US10341802B2 (en) * 2015-11-13 2019-07-02 Dolby Laboratories Licensing Corporation Method and apparatus for generating from a multi-channel 2D audio input signal a 3D sound representation signal
US11387006B2 (en) 2015-11-30 2022-07-12 In Hand Health, LLC Client monitoring, management, communication, and performance system and method of use
EP3209036A1 (en) * 2016-02-19 2017-08-23 Thomson Licensing Method, computer readable storage medium, and apparatus for determining a target sound scene at a target position from two or more source sound scenes
EP3574661B1 (en) 2017-01-27 2021-08-11 Auro Technologies NV Processing method and system for panning audio objects
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
WO2018213159A1 (en) * 2017-05-15 2018-11-22 Dolby Laboratories Licensing Corporation Methods, systems and apparatus for conversion of spatial audio format(s) to speaker signals
EP3625974B1 (en) * 2017-05-15 2020-12-23 Dolby Laboratories Licensing Corporation Methods, systems and apparatus for conversion of spatial audio format(s) to speaker signals
CN111123202B (zh) * 2020-01-06 2022-01-11 北京大学 一种室内早期反射声定位方法及系统
CN111615045B (zh) * 2020-06-23 2021-06-11 腾讯音乐娱乐科技（深圳）有限公司 音频处理方法、装置、设备及存储介质
CN112530445A (zh) * 2020-11-23 2021-03-19 雷欧尼斯（北京）信息技术有限公司 高阶Ambisonic音频的编解码方法及芯片
CN116980818A (zh) * 2021-03-05 2023-10-31 华为技术有限公司 虚拟扬声器集合确定方法和装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007006474A (ja) * 2005-06-23 2007-01-11 Akg Acoustics Gmbh マイクロフォンのモデリング
CN101263742A (zh) * 2005-09-13 2008-09-10 皇家飞利浦电子股份有限公司 音频编码
JP2009218655A (ja) * 2008-03-07 2009-09-24 Nippon Hoso Kyokai <Nhk> 音響信号変換装置、その方法及びそのプログラム
WO2011117399A1 (en) * 2010-03-26 2011-09-29 Thomson Licensing Method and device for decoding an audio soundfield representation for audio playback

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB394325A (en) 1931-12-14 1933-06-14 Alan Dower Blumlein Improvements in and relating to sound-transmission, sound-recording and sound-reproducing systems
US4704728A (en) * 1984-12-31 1987-11-03 Peter Scheiber Signal re-distribution, decoding and processing in accordance with amplitude, phase, and other characteristics
JPH05103391A (ja) 1991-10-07 1993-04-23 Matsushita Electric Ind Co Ltd 指向性制御スピーカシステム
JPH06165281A (ja) 1992-11-18 1994-06-10 Matsushita Electric Ind Co Ltd 指向性スピーカ装置
US7231054B1 (en) 1999-09-24 2007-06-12 Creative Technology Ltd Method and apparatus for three-dimensional audio display
JP4805541B2 (ja) * 2002-04-10 2011-11-02 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 ステレオ信号の符号化
FR2847376B1 (fr) * 2002-11-19 2005-02-04 France Telecom Procede de traitement de donnees sonores et dispositif d'acquisition sonore mettant en oeuvre ce procede
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
EP1538741A1 (en) * 2003-12-05 2005-06-08 Semiconductor Ideas to The Market (ItoM) BV Multiplier device
US7787631B2 (en) 2004-11-30 2010-08-31 Agere Systems Inc. Parametric coding of spatial audio with cues based on transmitted channels
EP1761110A1 (en) * 2005-09-02 2007-03-07 Ecole Polytechnique Fédérale de Lausanne Method to generate multi-channel audio signals from stereo signals
JP2007208709A (ja) 2006-02-02 2007-08-16 Kenwood Corp 音声再生装置
WO2007101958A2 (fr) 2006-03-09 2007-09-13 France Telecom Optimisation d'une spatialisation sonore binaurale a partir d'un encodage multicanal
US8712061B2 (en) 2006-05-17 2014-04-29 Creative Technology Ltd Phase-amplitude 3-D stereo encoder and decoder
US7501605B2 (en) * 2006-08-29 2009-03-10 Lam Research Corporation Method of tuning thermal conductivity of electrostatic chuck support assembly
WO2008039339A2 (en) * 2006-09-25 2008-04-03 Dolby Laboratories Licensing Corporation Improved spatial resolution of the sound field for multi-channel audio playback systems by deriving signals with high order angular terms
KR101368859B1 (ko) * 2006-12-27 2014-02-27 삼성전자주식회사 개인 청각 특성을 고려한 2채널 입체 음향 재생 방법 및장치
TWI424755B (zh) 2008-01-11 2014-01-21 Dolby Lab Licensing Corp 矩陣解碼器
EP2094032A1 (en) 2008-02-19 2009-08-26 Deutsche Thomson OHG Audio signal, method and apparatus for encoding or transmitting the same and method and apparatus for processing the same
US8705749B2 (en) * 2008-08-14 2014-04-22 Dolby Laboratories Licensing Corporation Audio signal transformatting
GB0815362D0 (en) * 2008-08-22 2008-10-01 Queen Mary & Westfield College Music collection navigation
EP2356825A4 (en) * 2008-10-20 2014-08-06 Genaudio Inc AUDIO SPACE AND ENVIRONMENT SIMULATION
EP2486450B1 (en) * 2008-11-02 2021-05-19 David Chaum Near to eye display system and appliance
ES2690164T3 (es) * 2009-06-25 2018-11-19 Dts Licensing Limited Dispositivo y método para convertir una señal de audio espacial
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
JP5826996B2 (ja) 2010-08-30 2015-12-02 日本放送協会 音響信号変換装置およびそのプログラム、ならびに、３次元音響パンニング装置およびそのプログラム
EP2450880A1 (en) 2010-11-05 2012-05-09 Thomson Licensing Data structure for Higher Order Ambisonics audio data
EP2645748A1 (en) * 2012-03-28 2013-10-02 Thomson Licensing Method and apparatus for decoding stereo loudspeaker signals from a higher-order Ambisonics audio signal
US9514620B2 (en) * 2013-09-06 2016-12-06 Immersion Corporation Spatialized haptic feedback based on dynamically scaled values

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007006474A (ja) * 2005-06-23 2007-01-11 Akg Acoustics Gmbh マイクロフォンのモデリング
CN101263742A (zh) * 2005-09-13 2008-09-10 皇家飞利浦电子股份有限公司 音频编码
JP2009218655A (ja) * 2008-03-07 2009-09-24 Nippon Hoso Kyokai <Nhk> 音響信号変換装置、その方法及びそのプログラム
WO2011117399A1 (en) * 2010-03-26 2011-09-29 Thomson Licensing Method and device for decoding an audio soundfield representation for audio playback

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Robust Two-dimensional Surround sound reproduction for nonuniform Loudspeaker Layouts;POLETTI等;《JAES,AES,60 EAST 42ND STREET, ROOM 2520 NEW YORK 10165-2520，USA》;20070701;全文 *

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JP6898419B2 (ja) 2021-07-07
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CN107222824A (zh) 2017-09-29
CN107241677A (zh) 2017-10-10
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US9913062B2 (en) 2018-03-06
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EP2832113B1 (en) 2020-07-22
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KR102207035B1 (ko) 2021-01-25
EP2645748A1 (en) 2013-10-02
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KR102678270B1 (ko) 2024-06-26
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US20180160249A1 (en) 2018-06-07
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US20190364376A1 (en) 2019-11-28
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