BR112015025092A2 - sistema de processamento de áudio - Google Patents

sistema de processamento de áudio

Info

Publication number
BR112015025092A2
BR112015025092A2 BR112015025092A BR112015025092A BR112015025092A2 BR 112015025092 A2 BR112015025092 A2 BR 112015025092A2 BR 112015025092 A BR112015025092 A BR 112015025092A BR 112015025092 A BR112015025092 A BR 112015025092A BR 112015025092 A2 BR112015025092 A2 BR 112015025092A2
Authority
BR
Brazil
Prior art keywords
processing system
time domain
domain representation
audio signal
stage
Prior art date
Application number
BR112015025092A
Other languages
English (en)
Other versions
BR112015025092B1 (pt
Inventor
Purnhagen Heiko
Kjoerling Kristofer
Villemoes Lars
Original Assignee
Dolby Int Ab
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 Dolby Int Ab filed Critical Dolby Int Ab
Publication of BR112015025092A2 publication Critical patent/BR112015025092A2/pt
Publication of BR112015025092B1 publication Critical patent/BR112015025092B1/pt

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/032—Quantisation or dequantisation of spectral components
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • 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

Abstract

resumo patente de invenção: "sistema de processamento de áudio". a presente invenção refere-se a um sistema de processamento de áudio (100) que compreende um componente front-end (102, 103) que recebe componentes espectrais quantizados e realiza uma quantização inversa, rendendo uma representação de domínio de tempo de um sinal intermediário. o sistema de processamento de áudio compreende, adicionalmente, um estágio de processamento de domínio de frequência (104, 105, 106, 107, 108), configurado para fornecer uma representação de domínio de tempo de um sinal de áudio processado e um conversor de taxa de amostra (109), fornece um sinal de áudio reconstruído amostrado em uma frequência de amostragem-alvo. as respectivas taxas de amostragem interna da representação de domínio de tempo do sinal de áudio intermediário e da representação de domínio de tempo do sinal de áudio processado são iguais. em modalidades particulares, o estágio de processamento compreende um estágio de mixagem de aumento paramétrico que é operável em pelo menos dois modos diferentes e é associado a um estágio de atraso que garante atraso total constante.
BR112015025092-0A 2013-04-05 2014-04-04 Sistema de processamento de áudio e método para processar um fluxo de bits de áudio BR112015025092B1 (pt)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201361809019P 2013-04-05 2013-04-05
US61/809,019 2013-04-05
US201361875959P 2013-09-10 2013-09-10
US61/875,959 2013-09-10
PCT/EP2014/056857 WO2014161996A2 (en) 2013-04-05 2014-04-04 Audio processing system

Publications (2)

Publication Number Publication Date
BR112015025092A2 true BR112015025092A2 (pt) 2017-07-18
BR112015025092B1 BR112015025092B1 (pt) 2022-01-11

Family

ID=50489074

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112015025092-0A BR112015025092B1 (pt) 2013-04-05 2014-04-04 Sistema de processamento de áudio e método para processar um fluxo de bits de áudio

Country Status (11)

Country Link
US (2) US9478224B2 (pt)
EP (1) EP2981956B1 (pt)
JP (2) JP6013646B2 (pt)
KR (1) KR101717006B1 (pt)
CN (2) CN109509478B (pt)
BR (1) BR112015025092B1 (pt)
ES (1) ES2934646T3 (pt)
HK (1) HK1214026A1 (pt)
IN (1) IN2015MN02784A (pt)
RU (1) RU2625444C2 (pt)
WO (1) WO2014161996A2 (pt)

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Also Published As

Publication number Publication date
HK1214026A1 (zh) 2016-07-15
IN2015MN02784A (pt) 2015-10-23
WO2014161996A3 (en) 2014-12-04
WO2014161996A2 (en) 2014-10-09
US9812136B2 (en) 2017-11-07
CN105247613A (zh) 2016-01-13
JP6407928B2 (ja) 2018-10-17
KR101717006B1 (ko) 2017-03-15
JP2016514858A (ja) 2016-05-23
JP6013646B2 (ja) 2016-10-25
US20160055855A1 (en) 2016-02-25
CN109509478B (zh) 2023-09-05
RU2015147158A (ru) 2017-05-17
EP2981956A2 (en) 2016-02-10
US20160372123A1 (en) 2016-12-22
US9478224B2 (en) 2016-10-25
BR112015025092B1 (pt) 2022-01-11
RU2625444C2 (ru) 2017-07-13
KR20150139601A (ko) 2015-12-11
CN105247613B (zh) 2019-01-18
CN109509478A (zh) 2019-03-22
ES2934646T3 (es) 2023-02-23
EP2981956B1 (en) 2022-11-30
JP2017017749A (ja) 2017-01-19

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