BR112019007968A2 - decodificação de múltiplos sinais de áudio - Google Patents

decodificação de múltiplos sinais de áudio

Info

Publication number
BR112019007968A2
BR112019007968A2 BR112019007968A BR112019007968A BR112019007968A2 BR 112019007968 A2 BR112019007968 A2 BR 112019007968A2 BR 112019007968 A BR112019007968 A BR 112019007968A BR 112019007968 A BR112019007968 A BR 112019007968A BR 112019007968 A2 BR112019007968 A2 BR 112019007968A2
Authority
BR
Brazil
Prior art keywords
decoder
target channel
time
generate
bit stream
Prior art date
Application number
BR112019007968A
Other languages
English (en)
Inventor
Subrahmanyam Chandra Sekhar Chebiyyam Venkata
Atti Venkatraman
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of BR112019007968A2 publication Critical patent/BR112019007968A2/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
    • 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
    • G10L19/02—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
    • G10L19/0212—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 using orthogonal transformation
    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/04—Time compression or expansion
    • G10L21/055—Time compression or expansion for synchronising with other signals, e.g. video signals
    • 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 
    • 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
    • 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
    • G10L19/02—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
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • 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
    • G10L19/26—Pre-filtering or post-filtering
    • 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
    • H04S2420/03—Application of parametric coding in stereophonic audio systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Stereophonic System (AREA)

Abstract

trata-se de um dispositivo que inclui um receptor configurado para receber um fluxo de bits codificado a partir de um segundo dispositivo. o fluxo de bits codificado inclui um valor de disparidade temporal determinado com base em um canal de referência capturado no segundo dispositivo e um canal alvo capturado no segundo dispositivo. o dispositivo também inclui um decodificador configurado para decodificar o fluxo de bits codificado para gerar um primeiro sinal de saída de domínio de frequência e um segundo sinal de saída de domínio de frequência. o decodificador é configurado para realizar operações de transformada inversa nos sinais de saída de domínio de frequência para gerar um primeiro e segundo sinais de domínio de tempo. com base no valor de disparidade temporal, o decodificador é configurado para mapear os sinais de domínio de tempo a um canal alvo decodificado e um canal de referência decodificado. o decodificador também é configurado para realizar uma operação de deslocamento de domínio de tempo causal no canal alvo decodificado com base no valor de disparidade temporal para gerar um canal alvo decodificado ajustado.
BR112019007968A 2016-10-31 2017-09-22 decodificação de múltiplos sinais de áudio BR112019007968A2 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201662415369P 2016-10-31 2016-10-31
US15/711,538 US10224042B2 (en) 2016-10-31 2017-09-21 Encoding of multiple audio signals
PCT/US2017/053040 WO2018080683A1 (en) 2016-10-31 2017-09-22 Decoding of multiple audio signals

Publications (1)

Publication Number Publication Date
BR112019007968A2 true BR112019007968A2 (pt) 2019-07-09

Family

ID=62022507

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112019007968A BR112019007968A2 (pt) 2016-10-31 2017-09-22 decodificação de múltiplos sinais de áudio

Country Status (8)

Country Link
US (2) US10224042B2 (pt)
EP (2) EP3533055A1 (pt)
KR (2) KR20230035430A (pt)
CN (2) CN109844858B (pt)
BR (1) BR112019007968A2 (pt)
SG (1) SG11201901942TA (pt)
TW (1) TWI806839B (pt)
WO (1) WO2018080683A1 (pt)

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CA3011915C (en) 2016-01-22 2021-07-13 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for estimating an inter-channel time difference
US10224042B2 (en) 2016-10-31 2019-03-05 Qualcomm Incorporated Encoding of multiple audio signals
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US10304468B2 (en) * 2017-03-20 2019-05-28 Qualcomm Incorporated Target sample generation
US10878879B2 (en) * 2017-06-21 2020-12-29 Mediatek Inc. Refresh control method for memory system to perform refresh action on all memory banks of the memory system within refresh window
US10932122B1 (en) * 2019-06-07 2021-02-23 Sprint Communications Company L.P. User equipment beam effectiveness

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Also Published As

Publication number Publication date
CN116504255A (zh) 2023-07-28
CN109844858B (zh) 2023-06-02
EP3533055A1 (en) 2019-09-04
US20190147896A1 (en) 2019-05-16
WO2018080683A1 (en) 2018-05-03
KR102505148B1 (ko) 2023-02-28
KR20230035430A (ko) 2023-03-13
TW201818398A (zh) 2018-05-16
KR20190067825A (ko) 2019-06-17
US20180122385A1 (en) 2018-05-03
SG11201901942TA (en) 2019-05-30
EP3855431A1 (en) 2021-07-28
CN109844858A (zh) 2019-06-04
US10891961B2 (en) 2021-01-12
TWI806839B (zh) 2023-07-01
US10224042B2 (en) 2019-03-05

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B06W Patent application suspended after preliminary examination (for patents with searches from other patent authorities) chapter 6.23 patent gazette]