BR112021019715A2 - Codificador e decodificador de áudio multicanais, representação de áudio e métodos - Google Patents

Codificador e decodificador de áudio multicanais, representação de áudio e métodos

Info

Publication number
BR112021019715A2
BR112021019715A2 BR112021019715A BR112021019715A BR112021019715A2 BR 112021019715 A2 BR112021019715 A2 BR 112021019715A2 BR 112021019715 A BR112021019715 A BR 112021019715A BR 112021019715 A BR112021019715 A BR 112021019715A BR 112021019715 A2 BR112021019715 A2 BR 112021019715A2
Authority
BR
Brazil
Prior art keywords
audio
multichannel
decoder
methods
representation
Prior art date
Application number
BR112021019715A
Other languages
English (en)
Inventor
Eleni Fotopoulou
Emmanuel Ravelli
Guillaume Fuchs
Markus Multrus
Original Assignee
Fraunhofer Ges Forschung
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 Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of BR112021019715A2 publication Critical patent/BR112021019715A2/pt

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

codificador e decodificador de áudio multicanais, representação de áudio e métodos. a presente invenção se refere a um codificador de áudio multicanais (100) para prover uma representação de áudio codificada (112) com base em uma representação de áudio de entrada (110) é provido. o codificador de áudio multicanais (100) é configurado para comutar (140) entre uma codificação multicanais paramétrica (120) de uma pluralidade de canais e uma codificação individual (130) de uma pluralidade de canais na dependência das características da representação de áudio de entrada (110).
BR112021019715A 2019-04-04 2020-04-02 Codificador e decodificador de áudio multicanais, representação de áudio e métodos BR112021019715A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19167449.8A EP3719799A1 (en) 2019-04-04 2019-04-04 A multi-channel audio encoder, decoder, methods and computer program for switching between a parametric multi-channel operation and an individual channel operation
PCT/EP2020/059464 WO2020201461A1 (en) 2019-04-04 2020-04-02 A multi-channel audio encoder, decoder, methods and computer program for switching between a parametric multi-channel operation and an individual channel operation

Publications (1)

Publication Number Publication Date
BR112021019715A2 true BR112021019715A2 (pt) 2021-12-14

Family

ID=66101866

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112021019715A BR112021019715A2 (pt) 2019-04-04 2020-04-02 Codificador e decodificador de áudio multicanais, representação de áudio e métodos

Country Status (13)

Country Link
US (1) US20220108706A1 (pt)
EP (2) EP3719799A1 (pt)
JP (2) JP7511574B2 (pt)
KR (1) KR20210147052A (pt)
CN (1) CN113874937A (pt)
AU (1) AU2020250906A1 (pt)
BR (1) BR112021019715A2 (pt)
CA (1) CA3135905A1 (pt)
MX (1) MX2021012036A (pt)
SG (1) SG11202110840PA (pt)
TW (1) TWI782268B (pt)
WO (1) WO2020201461A1 (pt)
ZA (1) ZA202107401B (pt)

Family Cites Families (21)

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JP2000149439A (ja) * 1998-11-12 2000-05-30 Matsushita Electric Ind Co Ltd 多チャンネル音声再生装置
US20020009000A1 (en) * 2000-01-18 2002-01-24 Qdesign Usa, Inc. Adding imperceptible noise to audio and other types of signals to cause significant degradation when compressed and decompressed
US7212872B1 (en) * 2000-05-10 2007-05-01 Dts, Inc. Discrete multichannel audio with a backward compatible mix
JP2002175097A (ja) * 2000-12-06 2002-06-21 Yamaha Corp 音声信号のエンコード／圧縮装置およびデコード／伸長装置
WO2005020210A2 (en) * 2003-08-26 2005-03-03 Sarnoff Corporation Method and apparatus for adaptive variable bit rate audio encoding
SE0402652D0 (sv) * 2004-11-02 2004-11-02 Coding Tech Ab Methods for improved performance of prediction based multi- channel reconstruction
US7647229B2 (en) * 2006-10-18 2010-01-12 Nokia Corporation Time scaling of multi-channel audio signals
US8615398B2 (en) 2009-01-29 2013-12-24 Qualcomm Incorporated Audio coding selection based on device operating condition
CA2949616C (en) * 2009-03-17 2019-11-26 Dolby International Ab Advanced stereo coding based on a combination of adaptively selectable left/right or mid/side stereo coding and of parametric stereo coding
CA2827266C (en) * 2011-02-14 2017-02-28 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for coding a portion of an audio signal using a transient detection and a quality result
EP4243017A3 (en) * 2011-02-14 2023-11-08 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method decoding an audio signal using an aligned look-ahead portion
WO2013186343A2 (en) * 2012-06-14 2013-12-19 Dolby International Ab Smooth configuration switching for multichannel audio
KR20140017338A (ko) * 2012-07-31 2014-02-11 인텔렉추얼디스커버리 주식회사 오디오 신호 처리 장치 및 방법
US9378748B2 (en) * 2012-11-07 2016-06-28 Dolby Laboratories Licensing Corp. Reduced complexity converter SNR calculation
EP3067887A1 (en) * 2015-03-09 2016-09-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoder for encoding a multichannel signal and audio decoder for decoding an encoded audio signal
ES2955962T3 (es) * 2015-09-25 2023-12-11 Voiceage Corp Método y sistema que utiliza una diferencia de correlación a largo plazo entre los canales izquierdo y derecho para mezcla descendente en el dominio del tiempo de una señal de sonido estéreo en canales primarios y secundarios
KR102083200B1 (ko) 2016-01-22 2020-04-28 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 스펙트럼-도메인 리샘플링을 사용하여 멀티-채널 신호를 인코딩 또는 디코딩하기 위한 장치 및 방법
EP3208800A1 (en) * 2016-02-17 2017-08-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for stereo filing in multichannel coding
JP7149936B2 (ja) 2017-06-01 2022-10-07 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ 符号化装置及び符号化方法
CN116348951A (zh) * 2020-07-30 2023-06-27 弗劳恩霍夫应用研究促进协会 用于编码音频信号或用于解码经编码音频场景的设备、方法及计算机程序

Also Published As

Publication number Publication date
CA3135905A1 (en) 2020-10-08
EP3719799A1 (en) 2020-10-07
ZA202107401B (en) 2022-06-29
MX2021012036A (es) 2021-12-10
AU2020250906A1 (en) 2021-10-28
JP2024096910A (ja) 2024-07-17
JP2022528881A (ja) 2022-06-16
US20220108706A1 (en) 2022-04-07
WO2020201461A1 (en) 2020-10-08
KR20210147052A (ko) 2021-12-06
CN113874937A (zh) 2021-12-31
SG11202110840PA (en) 2021-10-28
TWI782268B (zh) 2022-11-01
TW202044232A (zh) 2020-12-01
JP7511574B2 (ja) 2024-07-05
EP3948860A1 (en) 2022-02-09

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