BR112021025265A2 - Sintetizador de áudio, codificador de áudio, sistema, método e unidade de armazenamento não transitória - Google Patents

Sintetizador de áudio, codificador de áudio, sistema, método e unidade de armazenamento não transitória

Info

Publication number
BR112021025265A2
BR112021025265A2 BR112021025265A BR112021025265A BR112021025265A2 BR 112021025265 A2 BR112021025265 A2 BR 112021025265A2 BR 112021025265 A BR112021025265 A BR 112021025265A BR 112021025265 A BR112021025265 A BR 112021025265A BR 112021025265 A2 BR112021025265 A2 BR 112021025265A2
Authority
BR
Brazil
Prior art keywords
signal
audio
storage unit
downmix
transient storage
Prior art date
Application number
BR112021025265A
Other languages
English (en)
Inventor
Alexandre Bouthéon
Fabian Küch
Guillaume Fuchs
Jürgen Herre
Markus Multrus
Oliver Thiergart
Sascha Disch
Stefan Bayer
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 BR112021025265A2 publication Critical patent/BR112021025265A2/pt

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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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • 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 
    • 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
    • H04S2400/03—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)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Mathematical Physics (AREA)
  • Multimedia (AREA)
  • General Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Stereophonic System (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

sintetizador de áudio, codificador de áudio, sistema, método e unidade de armazenamento não transitória. são revelados vários exemplos de técnica de codificação e decodificação. em particular, um sintetizador de áudio (300) para gerar um sinal de síntese (336, 340, yr) a partir de um sinal de mixagem de redução (246, x) que compreende: uma interface de entrada (312) para receber o sinal de mixagem de redução (246, x), em que o sinal de mixagem de redução (246, x) tem diversos canais de mixagem de redução e informações externas (228), em que as informações externas (228) incluem informações de correlação e nível de canal (314, (csi), (qui)) de um sinal original (212, y), em que o sinal original (212, y) tem diversos canais originais; e um processador de síntese (404) para gerar, de acordo com pelo menos uma regra de mixagem, o sinal de síntese (336, 340, yr) que usa: informações de correlação e nível de canal (220, 314, (csi), (qui)) do sinal original (212, y); e informações de covariância (cx) associadas ao sinal de mixagem de redução (324, 246, x).
BR112021025265A 2019-06-14 2020-06-15 Sintetizador de áudio, codificador de áudio, sistema, método e unidade de armazenamento não transitória BR112021025265A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19180385 2019-06-14
PCT/EP2020/066456 WO2020249815A2 (en) 2019-06-14 2020-06-15 Parameter encoding and decoding

Publications (1)

Publication Number Publication Date
BR112021025265A2 true BR112021025265A2 (pt) 2022-03-15

Family

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Family Applications (1)

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BR112021025265A BR112021025265A2 (pt) 2019-06-14 2020-06-15 Sintetizador de áudio, codificador de áudio, sistema, método e unidade de armazenamento não transitória

Country Status (12)

Country Link
US (3) US20220108707A1 (pt)
EP (1) EP3984028B1 (pt)
JP (2) JP7471326B2 (pt)
KR (3) KR20220025108A (pt)
CN (1) CN114270437A (pt)
AU (3) AU2020291190B2 (pt)
BR (1) BR112021025265A2 (pt)
CA (2) CA3143408A1 (pt)
MX (1) MX2021015314A (pt)
TW (1) TWI792006B (pt)
WO (1) WO2020249815A2 (pt)
ZA (1) ZA202110293B (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2021359777A1 (en) 2020-10-13 2023-06-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for encoding a plurality of audio objects using direction information during a downmixing or apparatus and method for decoding using an optimized covariance synthesis
EP4229631A2 (en) 2020-10-13 2023-08-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for encoding a plurality of audio objects and apparatus and method for decoding using two or more relevant audio objects
GB2624869A (en) * 2022-11-29 2024-06-05 Nokia Technologies Oy Parametric spatial audio encoding
GB202218103D0 (en) * 2022-12-01 2023-01-18 Nokia Technologies Oy Binaural audio rendering of spatial audio

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US20070055510A1 (en) * 2005-07-19 2007-03-08 Johannes Hilpert Concept for bridging the gap between parametric multi-channel audio coding and matrixed-surround multi-channel coding
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WO2007080211A1 (en) 2006-01-09 2007-07-19 Nokia Corporation Decoding of binaural audio signals
JP4606507B2 (ja) 2006-03-24 2011-01-05 ドルビー インターナショナル アクチボラゲット 多チャンネル信号のパラメータ表現からの空間ダウンミックスの生成
ATE538604T1 (de) * 2006-03-28 2012-01-15 Ericsson Telefon Ab L M Verfahren und anordnung für einen decoder für mehrkanal-surroundton
BRPI0715559B1 (pt) 2006-10-16 2021-12-07 Dolby International Ab Codificação aprimorada e representação de parâmetros de codificação de objeto de downmix multicanal
CN101536086B (zh) 2006-11-15 2012-08-08 Lg电子株式会社 用于解码音频信号的方法和装置
MX2010004138A (es) 2007-10-17 2010-04-30 Ten Forschung Ev Fraunhofer Codificacion de audio usando conversion de estereo a multicanal.
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
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EP2879131A1 (en) * 2013-11-27 2015-06-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Decoder, encoder and method for informed loudness estimation in object-based audio coding systems
GB201718341D0 (en) 2017-11-06 2017-12-20 Nokia Technologies Oy Determination of targeted spatial audio parameters and associated spatial audio playback

Also Published As

Publication number Publication date
JP2024029071A (ja) 2024-03-05
US20220108707A1 (en) 2022-04-07
JP7471326B2 (ja) 2024-04-19
TWI792006B (zh) 2023-02-11
KR20220025108A (ko) 2022-03-03
AU2021286309B2 (en) 2023-05-04
EP3984028C0 (en) 2024-04-17
US11990142B2 (en) 2024-05-21
CN114270437A (zh) 2022-04-01
AU2021286309A1 (en) 2022-01-20
AU2020291190B2 (en) 2023-10-12
CA3143408A1 (en) 2020-12-17
CA3193359A1 (en) 2020-12-17
ZA202110293B (en) 2022-08-31
KR20220025107A (ko) 2022-03-03
EP3984028B1 (en) 2024-04-17
US20220122621A1 (en) 2022-04-21
TW202322102A (zh) 2023-06-01
JP2022537026A (ja) 2022-08-23
WO2020249815A2 (en) 2020-12-17
MX2021015314A (es) 2022-02-03
AU2020291190A1 (en) 2022-01-20
KR20220024593A (ko) 2022-03-03
WO2020249815A3 (en) 2021-02-04
AU2021286307A1 (en) 2022-01-20
US20220122617A1 (en) 2022-04-21
EP3984028A2 (en) 2022-04-20
TW202105365A (zh) 2021-02-01
AU2021286307B2 (en) 2023-06-15

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