BR112014017457A2 - aparelho de transmissão de áudio espacial; aparelho de codificação de áudio espacial; método de geração de sinais de saída de áudio espacial; e método de codificação de áudio espacial - Google Patents

aparelho de transmissão de áudio espacial; aparelho de codificação de áudio espacial; método de geração de sinais de saída de áudio espacial; e método de codificação de áudio espacial

Info

Publication number
BR112014017457A2
BR112014017457A2 BR112014017457A BR112014017457A BR112014017457A2 BR 112014017457 A2 BR112014017457 A2 BR 112014017457A2 BR 112014017457 A BR112014017457 A BR 112014017457A BR 112014017457 A BR112014017457 A BR 112014017457A BR 112014017457 A2 BR112014017457 A2 BR 112014017457A2
Authority
BR
Brazil
Prior art keywords
audio
spatial
downmix
spatial audio
residual
Prior art date
Application number
BR112014017457A
Other languages
English (en)
Other versions
BR112014017457A8 (pt
Inventor
Werner Johannes Oomen Arnoldus
Gosuinus Petrus Schuijers Erik
Gerardus Henricus Koppens Jeroen
Maria Van De Kerkhof Leon
Original Assignee
Koninklijke Philips Nv
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 Koninklijke Philips Nv filed Critical Koninklijke Philips Nv
Publication of BR112014017457A2 publication Critical patent/BR112014017457A2/pt
Publication of BR112014017457A8 publication Critical patent/BR112014017457A8/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
    • G10L19/04—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
    • G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding
    • 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
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/002—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 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/308—Electronic adaptation dependent on speaker or headphone connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • 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
    • 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
    • H04S2420/01—Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • H04S3/004—For headphones
    • 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

Landscapes

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

Abstract

resumo aparelho de transmissão de áudio espacial; aparelho de codificação de áudio espacial; método de geração de sinais de saída de áudio espacial; e método de codificação de áudio espacial um codificador (501) gera dados que representam um cenário de áudio por um primeiro downmix e dados que caracterizam objetos de áudio. além disso, um parâmetro de difusão dependente da direção indicativo de um grau de difusão de um downmix residual é provido, onde o downmix residual corresponde a um downmix de componentes de áudio do cenário de áudio com os objetos de áudio sendo extraídos. um aparelho de transmissão (503) compreende um receptor (701) que recebe os dados do codificador (501). um circuito (703) gera sinais para uma configuração de alto-falante espacial dos objetos de áudio. um transformador (709) gera sinais de som não difusos para a configuração de alto-falante espacial ao aplicar uma primeira transformação ao downmix residual e outro transformador (707) gera sinais para a configuração de alto-falante espacial ao aplicar uma segunda transformação ao downmix residual ao aplicar uma descorrelação ao downmix residual. as transformações são dependentes do parâmetro de difusão dependente da direção. os sinais são combinados para gerar um sinal de saída. 1/1
BR112014017457A 2012-01-19 2013-01-17 aparelho de transmissão de áudio espacial; aparelho de codificação de áudio espacial; método de geração de sinais de saída de áudio espacial; e método de codificação de áudio espacial BR112014017457A8 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261588394P 2012-01-19 2012-01-19
PCT/IB2013/050419 WO2013108200A1 (en) 2012-01-19 2013-01-17 Spatial audio rendering and encoding

Publications (2)

Publication Number Publication Date
BR112014017457A2 true BR112014017457A2 (pt) 2017-06-13
BR112014017457A8 BR112014017457A8 (pt) 2017-07-04

Family

ID=47891796

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112014017457A BR112014017457A8 (pt) 2012-01-19 2013-01-17 aparelho de transmissão de áudio espacial; aparelho de codificação de áudio espacial; método de geração de sinais de saída de áudio espacial; e método de codificação de áudio espacial

Country Status (7)

Country Link
US (2) US9584912B2 (pt)
EP (1) EP2805326B1 (pt)
JP (1) JP2015509212A (pt)
CN (1) CN104054126B (pt)
BR (1) BR112014017457A8 (pt)
RU (1) RU2014133903A (pt)
WO (1) WO2013108200A1 (pt)

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Also Published As

Publication number Publication date
BR112014017457A8 (pt) 2017-07-04
EP2805326A1 (en) 2014-11-26
EP2805326B1 (en) 2015-10-14
WO2013108200A1 (en) 2013-07-25
CN104054126B (zh) 2017-03-29
JP2015509212A (ja) 2015-03-26
US20140358567A1 (en) 2014-12-04
US9584912B2 (en) 2017-02-28
US20170125030A1 (en) 2017-05-04
CN104054126A (zh) 2014-09-17
RU2014133903A (ru) 2016-03-20

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