TWI651715B - 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法 - Google Patents

從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法 Download PDF

Info

Publication number
TWI651715B
TWI651715B TW106112615A TW106112615A TWI651715B TW I651715 B TWI651715 B TW I651715B TW 106112615 A TW106112615 A TW 106112615A TW 106112615 A TW106112615 A TW 106112615A TW I651715 B TWI651715 B TW I651715B
Authority
TW
Taiwan
Prior art keywords
matrix
loudspeaker
pan
shift
decoding
Prior art date
Application number
TW106112615A
Other languages
English (en)
Chinese (zh)
Other versions
TW201742051A (zh
Inventor
弗羅里安 凱勒
約哈拿斯 波漢
Original Assignee
瑞典商杜比國際公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 瑞典商杜比國際公司 filed Critical 瑞典商杜比國際公司
Publication of TW201742051A publication Critical patent/TW201742051A/zh
Application granted granted Critical
Publication of TWI651715B publication Critical patent/TWI651715B/zh

Links

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Mathematical Physics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Computational Linguistics (AREA)
  • Human Computer Interaction (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Stereophonic System (AREA)
TW106112615A 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法 TWI651715B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
??12305356.3 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

Publications (2)

Publication Number Publication Date
TW201742051A TW201742051A (zh) 2017-12-01
TWI651715B true TWI651715B (zh) 2019-02-21

Family

ID=47915205

Family Applications (10)

Application Number Title Priority Date Filing Date
TW113117951A TWI880743B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW109121565A TWI734539B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW108123461A TWI698858B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW106112615A TWI651715B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW110122105A TWI775497B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW111127893A TWI808842B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW112122168A TWI845344B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW102108148A TWI590230B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW107128846A TWI666629B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW107144828A TWI675366B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法

Family Applications Before (3)

Application Number Title Priority Date Filing Date
TW113117951A TWI880743B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW109121565A TWI734539B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW108123461A TWI698858B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法

Family Applications After (6)

Application Number Title Priority Date Filing Date
TW110122105A TWI775497B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW111127893A TWI808842B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW112122168A TWI845344B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW102108148A TWI590230B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW107128846A TWI666629B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TW107144828A TWI675366B (zh) 2012-03-28 2013-03-08 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法

Country Status (7)

Country Link
US (7) US9666195B2 (OSRAM)
EP (4) EP2645748A1 (OSRAM)
JP (6) JP6316275B2 (OSRAM)
KR (6) KR20250141277A (OSRAM)
CN (6) CN104205879B (OSRAM)
TW (10) TWI880743B (OSRAM)
WO (1) WO2013143934A1 (OSRAM)

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
US9769586B2 (en) 2013-05-29 2017-09-19 Qualcomm Incorporated Performing order reduction with respect to higher order ambisonic coefficients
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
ES2833424T3 (es) 2014-05-13 2021-06-15 Fraunhofer Ges Forschung Aparato y método para panoramización de amplitud de atenuación de bordes
US10770087B2 (en) 2014-05-16 2020-09-08 Qualcomm Incorporated Selecting codebooks for coding vectors decomposed from higher-order ambisonic audio signals
CN117612540A (zh) * 2014-06-27 2024-02-27 杜比国际公司 用于解码声音或声场的高阶高保真度立体声响复制（hoa）表示的方法
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
WO2016077317A1 (en) * 2014-11-11 2016-05-19 Google Inc. 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
US10249312B2 (en) 2015-10-08 2019-04-02 Qualcomm Incorporated Quantization of spatial vectors
US9961467B2 (en) * 2015-10-08 2018-05-01 Qualcomm Incorporated Conversion from channel-based audio to HOA
EP3375208B1 (en) * 2015-11-13 2019-11-06 Dolby International AB 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
WO2018138353A1 (en) 2017-01-27 2018-08-02 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
CN117061983A (zh) * 2021-03-05 2023-11-14 华为技术有限公司 虚拟扬声器集合确定方法和装置
US20250104719A1 (en) * 2023-09-27 2025-03-27 Apple Inc. Method and System for Producing an Augmented Ambisonic Format

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200822781A (en) * 2006-09-25 2008-05-16 Dolby Lab Licensing Corp Improved spatial resolution of the sound field for multi-channel audio playback systems by deriving signals with high-order angular terms

Family Cites Families (32)

* 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
WO2003085645A1 (en) * 2002-04-10 2003-10-16 Koninklijke Philips Electronics N.V. Coding of stereo signals
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
ATE378793T1 (de) * 2005-06-23 2007-11-15 Akg Acoustics Gmbh Methode zur modellierung eines mikrofons
EP1761110A1 (en) * 2005-09-02 2007-03-07 Ecole Polytechnique Fédérale de Lausanne Method to generate multi-channel audio signals from stereo signals
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
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
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
JP4922211B2 (ja) * 2008-03-07 2012-04-25 日本放送協会 音響信号変換装置、その方法及びそのプログラム
CN102124516B (zh) * 2008-08-14 2012-08-29 杜比实验室特许公司 音频信号格式变换
GB0815362D0 (en) * 2008-08-22 2008-10-01 Queen Mary & Westfield College Music collection navigation
CN102440003B (zh) * 2008-10-20 2016-01-27 吉诺迪奥公司 音频空间化和环境仿真
WO2010062481A1 (en) * 2008-11-02 2010-06-03 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
PT2553947E (pt) * 2010-03-26 2014-06-24 Thomson Licensing Método e dispositivo para descodificar uma representação de um campo sonoro de áudio para a reprodução de áudio
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200822781A (en) * 2006-09-25 2008-05-16 Dolby Lab Licensing Corp Improved spatial resolution of the sound field for multi-channel audio playback systems by deriving signals with high-order angular terms

Also Published As

Publication number Publication date
US20220182775A1 (en) 2022-06-09
JP2018137785A (ja) 2018-08-30
US10433090B2 (en) 2019-10-01
TW202512163A (zh) 2025-03-16
TW201937481A (zh) 2019-09-16
JP2021153315A (ja) 2021-09-30
CN107241677B (zh) 2019-10-11
WO2013143934A1 (en) 2013-10-03
JP6316275B2 (ja) 2018-04-25
TWI775497B (zh) 2022-08-21
TWI590230B (zh) 2017-07-01
TWI675366B (zh) 2019-10-21
US12010501B2 (en) 2024-06-11
KR102863957B1 (ko) 2025-09-25
JP7529370B2 (ja) 2024-08-06
TW201344678A (zh) 2013-11-01
KR102678270B1 (ko) 2024-06-26
US20240298128A1 (en) 2024-09-05
TW202115714A (zh) 2021-04-16
TW202018698A (zh) 2020-05-16
KR20140138773A (ko) 2014-12-04
US20240373186A1 (en) 2024-11-07
TW201742051A (zh) 2017-12-01
CN107222824B (zh) 2020-02-21
US11172317B2 (en) 2021-11-09
KR20250141277A (ko) 2025-09-26
KR102207035B1 (ko) 2021-01-25
US12495261B2 (en) 2025-12-09
CN104205879B (zh) 2017-08-11
TWI734539B (zh) 2021-07-21
US20180160249A1 (en) 2018-06-07
CN107222824A (zh) 2017-09-29
KR20230003436A (ko) 2023-01-05
CN107172567B (zh) 2019-12-03
JP7739546B2 (ja) 2025-09-16
KR20210009448A (ko) 2021-01-26
CN104205879A (zh) 2014-12-10
JP2020043590A (ja) 2020-03-19
KR20200003222A (ko) 2020-01-08
JP6622344B2 (ja) 2019-12-18
JP2023065646A (ja) 2023-05-12
EP4297439A3 (en) 2024-03-20
EP3796679B1 (en) 2023-08-09
CN107172567A (zh) 2017-09-15
TW202217798A (zh) 2022-05-01
CN107182022B (zh) 2019-10-01
KR20240100475A (ko) 2024-07-01
CN107241677A (zh) 2017-10-10
TW202416269A (zh) 2024-04-16
JP2015511800A (ja) 2015-04-20
JP6898419B2 (ja) 2021-07-07
US20190364376A1 (en) 2019-11-28
CN107135460A (zh) 2017-09-05
TWI698858B (zh) 2020-07-11
TWI845344B (zh) 2024-06-11
US9666195B2 (en) 2017-05-30
TW202322100A (zh) 2023-06-01
US9913062B2 (en) 2018-03-06
KR102481338B1 (ko) 2022-12-27
TWI808842B (zh) 2023-07-11
US20170208410A1 (en) 2017-07-20
CN107135460B (zh) 2019-11-15
TW201921337A (zh) 2019-06-01
US20150081310A1 (en) 2015-03-19
KR102059486B1 (ko) 2019-12-26
EP3796679A1 (en) 2021-03-24
EP2832113B1 (en) 2020-07-22
CN107182022A (zh) 2017-09-19
JP7459019B2 (ja) 2024-04-01
TWI880743B (zh) 2025-04-11
JP2024138554A (ja) 2024-10-08
EP2645748A1 (en) 2013-10-02
EP2832113A1 (en) 2015-02-04
TWI666629B (zh) 2019-07-21
EP4297439A2 (en) 2023-12-27

Similar Documents

Publication Publication Date Title
TWI651715B (zh) 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
TWI907295B (zh) 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法
JP2025186291A (ja) 高次アンビソニックス・オーディオ信号からステレオ・ラウドスピーカー信号を復号する方法および装置
TW202544794A (zh) 從三維度空間性高階保真立體音響聲頻訊號解碼立體聲擴音器訊號之方法及裝置，以及所用解碼矩陣之決定方法