JPWO2021181975A1 - - Google Patents

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Publication number
JPWO2021181975A1
JPWO2021181975A1 JP2022505843A JP2022505843A JPWO2021181975A1 JP WO2021181975 A1 JPWO2021181975 A1 JP WO2021181975A1 JP 2022505843 A JP2022505843 A JP 2022505843A JP 2022505843 A JP2022505843 A JP 2022505843A JP WO2021181975 A1 JPWO2021181975 A1 JP WO2021181975A1
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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
JP2022505843A
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JP7380834B2 (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.)
Filing date
Publication date
Priority claimed from PCT/JP2020/010080 external-priority patent/WO2021181472A1/ja
Priority claimed from PCT/JP2020/010081 external-priority patent/WO2021181473A1/ja
Priority claimed from PCT/JP2020/041216 external-priority patent/WO2021181746A1/ja
Application filed filed Critical
Publication of JPWO2021181975A1 publication Critical patent/JPWO2021181975A1/ja
Application granted granted Critical
Publication of JP7380834B2 publication Critical patent/JP7380834B2/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)
JP2022505843A 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 JP7380834B2 (ja)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JPPCT/JP2020/010081 2020-03-09
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
JPPCT/JP2020/010080 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/JP2020/041216 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/JP2021/004640 WO2021181975A1 (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
JPWO2021181975A1 true JPWO2021181975A1 (ja) 2021-09-16
JP7380834B2 JP7380834B2 (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
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
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
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
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
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 (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE532350T1 (de) * 2006-03-24 2011-11-15 Dolby Sweden Ab Erzeugung räumlicher heruntermischungen aus parametrischen darstellungen mehrkanaliger signale
CA2684975C (en) 2007-04-26 2016-08-02 Dolby Sweden Ab Apparatus and method for synthesizing an output signal
JP5122681B2 (ja) 2008-05-23 2013-01-16 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 パラメトリックステレオアップミクス装置、パラメトリックステレオデコーダ、パラメトリックステレオダウンミクス装置、及びパラメトリックステレオエンコーダ
WO2010097748A1 (en) 2009-02-27 2010-09-02 Koninklijke Philips Electronics N.V. Parametric stereo encoding and decoding
CN102428512A (zh) 2009-06-02 2012-04-25 松下电器产业株式会社 下混装置、编码装置以及其方法
CN103262158B (zh) * 2010-09-28 2015-07-29 华为技术有限公司 对解码的多声道音频信号或立体声信号进行后处理的装置和方法
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
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
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
RU2765565C2 (ru) 2015-09-25 2022-02-01 Войсэйдж Корпорейшн Способ и система для кодирования стереофонического звукового сигнала с использованием параметров кодирования первичного канала для кодирования вторичного канала
FR3045915A1 (fr) * 2015-12-16 2017-06-23 Orange Traitement de reduction de canaux adaptatif pour le codage d'un signal audio multicanal
CN117676451A (zh) 2016-11-08 2024-03-08 弗劳恩霍夫应用研究促进协会 使用边增益和残差增益对多声道信号进行编码或解码的装置和方法

Also Published As

Publication number Publication date
US20230319498A1 (en) 2023-10-05
US20230108927A1 (en) 2023-04-06
JPWO2021181974A1 (ja) 2021-09-16
CN115280411A (zh) 2022-11-01
US20230107976A1 (en) 2023-04-06
JP7380833B2 (ja) 2023-11-15
EP4120250A4 (en) 2024-03-27
JP7396459B2 (ja) 2023-12-12
WO2021181974A1 (ja) 2021-09-16
JPWO2021181746A1 (ja) 2021-09-16
US20230106764A1 (en) 2023-04-06
US20230106832A1 (en) 2023-04-06
JP7380834B2 (ja) 2023-11-15
EP4120250A1 (en) 2023-01-18
JPWO2021181977A1 (ja) 2021-09-16
JP7380836B2 (ja) 2023-11-15
JPWO2021181976A1 (ja) 2021-09-16
JP7380835B2 (ja) 2023-11-15
JP2024023484A (ja) 2024-02-21

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