JPWO2021181976A1 - - Google Patents

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Publication number
JPWO2021181976A1
JPWO2021181976A1 JP2022505844A JP2022505844A JPWO2021181976A1 JP WO2021181976 A1 JPWO2021181976 A1 JP WO2021181976A1 JP 2022505844 A JP2022505844 A JP 2022505844A JP 2022505844 A JP2022505844 A JP 2022505844A JP WO2021181976 A1 JPWO2021181976 A1 JP WO2021181976A1
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JP
Japan
Legal status (The legal status 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 status listed.)
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Application number
JP2022505844A
Other versions
JP7380835B2 (ja
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.)
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Publication date
Priority claimed from PCT/JP2020/010081 external-priority patent/WO2021181473A1/ja
Priority claimed from PCT/JP2020/010080 external-priority patent/WO2021181472A1/ja
Priority claimed from PCT/JP2020/041216 external-priority patent/WO2021181746A1/ja
Application filed filed Critical
Publication of JPWO2021181976A1 publication Critical patent/JPWO2021181976A1/ja
Application granted granted Critical
Publication of JP7380835B2 publication Critical patent/JP7380835B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • G10L19/04—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 predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • 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 
    • 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
    • H04S2400/03—Aspects of down-mixing multi-channel audio to configurations with lower numbers of playback channels, e.g. 7.1 -> 5.1

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Mathematical Physics (AREA)
  • Quality & Reliability (AREA)
  • Stereophonic System (AREA)
JP2022505844A 2020-03-09 2021-02-08 音信号ダウンミックス方法、音信号符号化方法、音信号ダウンミックス装置、音信号符号化装置、プログラム及び記録媒体 Active JP7380835B2 (ja)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JPPCT/JP2020/010080 2020-03-09
JPPCT/JP2020/010081 2020-03-09
PCT/JP2020/010081 WO2021181473A1 (ja) 2020-03-09 2020-03-09 音信号符号化方法、音信号復号方法、音信号符号化装置、音信号復号装置、プログラム及び記録媒体
PCT/JP2020/010080 WO2021181472A1 (ja) 2020-03-09 2020-03-09 音信号符号化方法、音信号復号方法、音信号符号化装置、音信号復号装置、プログラム及び記録媒体
PCT/JP2020/041216 WO2021181746A1 (ja) 2020-03-09 2020-11-04 音信号ダウンミックス方法、音信号符号化方法、音信号ダウンミックス装置、音信号符号化装置、プログラム及び記録媒体
JPPCT/JP2020/041216 2020-11-04
PCT/JP2021/004641 WO2021181976A1 (ja) 2020-03-09 2021-02-08 音信号ダウンミックス方法、音信号符号化方法、音信号ダウンミックス装置、音信号符号化装置、プログラム及び記録媒体

Publications (2)

Publication Number Publication Date
JPWO2021181976A1 true JPWO2021181976A1 (ja) 2021-09-16
JP7380835B2 JP7380835B2 (ja) 2023-11-15

Family

ID=77671479

Family Applications (6)

Application Number Title Priority Date Filing Date
JP2022505754A Active JP7396459B2 (ja) 2020-03-09 2020-11-04 音信号ダウンミックス方法、音信号符号化方法、音信号ダウンミックス装置、音信号符号化装置、プログラム及び記録媒体
JP2022505844A Active JP7380835B2 (ja) 2020-03-09 2021-02-08 音信号ダウンミックス方法、音信号符号化方法、音信号ダウンミックス装置、音信号符号化装置、プログラム及び記録媒体
JP2022505842A Active JP7380833B2 (ja) 2020-03-09 2021-02-08 音信号ダウンミックス方法、音信号符号化方法、音信号ダウンミックス装置、音信号符号化装置、プログラム及び記録媒体
JP2022505845A Active JP7380836B2 (ja) 2020-03-09 2021-02-08 音信号ダウンミックス方法、音信号符号化方法、音信号ダウンミックス装置、音信号符号化装置、プログラム及び記録媒体
JP2022505843A Active JP7380834B2 (ja) 2020-03-09 2021-02-08 音信号ダウンミックス方法、音信号符号化方法、音信号ダウンミックス装置、音信号符号化装置、プログラム及び記録媒体
JP2023203361A Pending JP2024023484A (ja) 2020-03-09 2023-11-30 音信号ダウンミックス方法、音信号ダウンミックス装置及びプログラム

Family Applications Before (1)

Application Number Title Priority Date Filing Date
JP2022505754A Active JP7396459B2 (ja) 2020-03-09 2020-11-04 音信号ダウンミックス方法、音信号符号化方法、音信号ダウンミックス装置、音信号符号化装置、プログラム及び記録媒体

Family Applications After (4)

Application Number Title Priority Date Filing Date
JP2022505842A Active JP7380833B2 (ja) 2020-03-09 2021-02-08 音信号ダウンミックス方法、音信号符号化方法、音信号ダウンミックス装置、音信号符号化装置、プログラム及び記録媒体
JP2022505845A Active JP7380836B2 (ja) 2020-03-09 2021-02-08 音信号ダウンミックス方法、音信号符号化方法、音信号ダウンミックス装置、音信号符号化装置、プログラム及び記録媒体
JP2022505843A Active JP7380834B2 (ja) 2020-03-09 2021-02-08 音信号ダウンミックス方法、音信号符号化方法、音信号ダウンミックス装置、音信号符号化装置、プログラム及び記録媒体
JP2023203361A Pending JP2024023484A (ja) 2020-03-09 2023-11-30 音信号ダウンミックス方法、音信号ダウンミックス装置及びプログラム

Country Status (5)

Country Link
US (5) US20230319498A1 (ja)
EP (1) EP4120250A4 (ja)
JP (6) JP7396459B2 (ja)
CN (1) CN115280411A (ja)
WO (1) WO2021181974A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023157159A1 (ja) * 2022-02-17 2023-08-24 日本電信電話株式会社 位相差スペクトル推定方法、チャネル間関係情報推定方法、信号符号化方法、信号処理方法、これらの装置、プログラム
CN115188394A (zh) * 2022-06-20 2022-10-14 安徽听见科技有限公司 混音方法、装置、电子设备和存储介质

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7391870B2 (en) * 2004-07-09 2008-06-24 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E V Apparatus and method for generating a multi-channel output signal
PL1999999T3 (pl) * 2006-03-24 2012-07-31 Dolby Int Ab Generowanie downmixów przestrzennych na podstawie parametrycznych reprezentacji sygnałów wielokanałowych
KR101312470B1 (ko) 2007-04-26 2013-09-27 돌비 인터네셔널 에이비 출력 신호 합성 장치 및 방법
CN102037507B (zh) 2008-05-23 2013-02-06 皇家飞利浦电子股份有限公司 参数立体声上混合设备、参数立体声译码器、参数立体声下混合设备、参数立体声编码器
WO2010097748A1 (en) 2009-02-27 2010-09-02 Koninklijke Philips Electronics N.V. Parametric stereo encoding and decoding
WO2010140350A1 (ja) 2009-06-02 2010-12-09 パナソニック株式会社 ダウンミックス装置、符号化装置、及びこれらの方法
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
EP2830050A1 (en) * 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for enhanced spatial audio object coding
EP2840811A1 (en) * 2013-07-22 2015-02-25 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for processing an audio signal; signal processing unit, binaural renderer, audio encoder and audio decoder
EP2830043A3 (en) * 2013-07-22 2015-02-18 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for Processing an Audio Signal in accordance with a Room Impulse Response, Signal Processing Unit, Audio Encoder, Audio Decoder, and Binaural Renderer
EP2830053A1 (en) * 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Multi-channel audio decoder, multi-channel audio encoder, methods and computer program using a residual-signal-based adjustment of a contribution of a decorrelated signal
CA2997334A1 (en) * 2015-09-25 2017-03-30 Voiceage Corporation Method and system for encoding left and right channels of a stereo sound signal selecting between two and four sub-frames models depending on the bit budget
FR3045915A1 (fr) * 2015-12-16 2017-06-23 Orange Traitement de reduction de canaux adaptatif pour le codage d'un signal audio multicanal
CA3127805C (en) 2016-11-08 2023-12-19 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for encoding or decoding a multichannel signal using a side gain and a residual gain
CN110556117B (zh) * 2018-05-31 2022-04-22 华为技术有限公司 立体声信号的编码方法和装置

Also Published As

Publication number Publication date
US20230106764A1 (en) 2023-04-06
CN115280411A (zh) 2022-11-01
EP4120250A4 (en) 2024-03-27
US20230107976A1 (en) 2023-04-06
US20230108927A1 (en) 2023-04-06
JP7380834B2 (ja) 2023-11-15
JPWO2021181746A1 (ja) 2021-09-16
JP2024023484A (ja) 2024-02-21
JPWO2021181975A1 (ja) 2021-09-16
JP7380833B2 (ja) 2023-11-15
JP7380835B2 (ja) 2023-11-15
EP4120250A1 (en) 2023-01-18
US20230319498A1 (en) 2023-10-05
US20230106832A1 (en) 2023-04-06
WO2021181974A1 (ja) 2021-09-16
JP7380836B2 (ja) 2023-11-15
JPWO2021181977A1 (ja) 2021-09-16
JPWO2021181974A1 (ja) 2021-09-16
JP7396459B2 (ja) 2023-12-12

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