BR112023023662A2 - Método e aparelho de codificação de sinal de áudio tridimensional e codificador - Google Patents

Método e aparelho de codificação de sinal de áudio tridimensional e codificador

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Publication number
BR112023023662A2
BR112023023662A2 BR112023023662A BR112023023662A BR112023023662A2 BR 112023023662 A2 BR112023023662 A2 BR 112023023662A2 BR 112023023662 A BR112023023662 A BR 112023023662A BR 112023023662 A BR112023023662 A BR 112023023662A BR 112023023662 A2 BR112023023662 A2 BR 112023023662A2
Authority
BR
Brazil
Prior art keywords
coefficients
encoder
audio signal
representative
dimensional audio
Prior art date
Application number
BR112023023662A
Other languages
English (en)
Inventor
Bin Wang
Shuai Liu
Yuan Gao
Zhe Wang
Original Assignee
Huawei Tech Co Ltd
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 Huawei Tech Co Ltd filed Critical Huawei Tech Co Ltd
Publication of BR112023023662A2 publication Critical patent/BR112023023662A2/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
    • G10L19/002—Dynamic bit allocation
    • 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
    • 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
    • G10L19/167—Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • 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
    • G10L19/0204—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 subband decomposition
    • 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
    • G10L19/032—Quantisation or dequantisation of spectral components
    • 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
    • H04S2420/11—Application of ambisonics in stereophonic audio systems

Landscapes

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

Abstract

método e aparelho de codificação de sinal de áudio tridimensional e codificador. a presente invenção refere-se a um método e aparelho de codificação de sinal de áudio tridimensional e um codificador e refere-se ao campo de multimídia. o método inclui: após obter uma quarta quantidade de coeficientes para um quadro corrente de um sinal de áudio tridimensional e valores de características de domínio de frequência da quarta quantidade de coeficientes, um codificador seleciona uma terceira quantidade de coeficientes representativos da quarta quantidade de coeficientes com base nos valores de características de domínio de frequência da quarta quantidade de coeficientes e seleciona uma segunda quantidade de alto-falantes virtuais representativos para o quadro corrente de um conjunto de alto-falantes virtuais candidatos com base na terceira quantidade de coeficientes representativos e então codifica o quadro corrente com base na segunda quantidade de alto-falantes virtuais representativos para o quadro corrente para obter um fluxo de bits. o codificador seleciona os alto-falantes virtuais representativos do conjunto de alto-falantes virtuais candidatos usando uma pequena quantidade de coeficientes representativos para representar todos os coeficientes. isto efetivamente reduz a complexidade de cálculo executado pelo codificador para pesquisar por um alto-falante virtual e a complexidade de cálculo de executar codificação de compressão no sinal de áudio tridimensional e, portanto, reduz a carga de cálculo do codificador.
BR112023023662A 2021-05-17 2022-05-07 Método e aparelho de codificação de sinal de áudio tridimensional e codificador BR112023023662A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110535832.3A CN115376527A (zh) 2021-05-17 2021-05-17 三维音频信号编码方法、装置和编码器
PCT/CN2022/091558 WO2022242480A1 (zh) 2021-05-17 2022-05-07 三维音频信号编码方法、装置和编码器

Publications (1)

Publication Number Publication Date
BR112023023662A2 true BR112023023662A2 (pt) 2024-01-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
BR112023023662A BR112023023662A2 (pt) 2021-05-17 2022-05-07 Método e aparelho de codificação de sinal de áudio tridimensional e codificador

Country Status (9)

Country Link
US (1) US20240087580A1 (pt)
EP (1) EP4322158A1 (pt)
JP (1) JP2024520944A (pt)
KR (1) KR20240001226A (pt)
CN (1) CN115376527A (pt)
BR (1) BR112023023662A2 (pt)
CA (1) CA3220588A1 (pt)
TW (1) TWI834163B (pt)
WO (1) WO2022242480A1 (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118136027A (zh) * 2022-12-02 2024-06-04 华为技术有限公司 场景音频编码方法及电子设备

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2469741A1 (en) * 2010-12-21 2012-06-27 Thomson Licensing Method and apparatus for encoding and decoding successive frames of an ambisonics representation of a 2- or 3-dimensional sound field
US20140358565A1 (en) * 2013-05-29 2014-12-04 Qualcomm Incorporated Compression of decomposed representations of a sound field
EP3591649B8 (en) * 2014-03-21 2022-06-08 Dolby International AB Method and apparatus for decompressing a compressed hoa signal
EP2934025A1 (en) * 2014-04-15 2015-10-21 Thomson Licensing Method and device for applying dynamic range compression to a higher order ambisonics signal
EP2963948A1 (en) * 2014-07-02 2016-01-06 Thomson Licensing Method and apparatus for encoding/decoding of directions of dominant directional signals within subbands of a HOA signal representation
EP2963949A1 (en) * 2014-07-02 2016-01-06 Thomson Licensing Method and apparatus for decoding a compressed HOA representation, and method and apparatus for encoding a compressed HOA representation
US9747910B2 (en) * 2014-09-26 2017-08-29 Qualcomm Incorporated Switching between predictive and non-predictive quantization techniques in a higher order ambisonics (HOA) framework
EP3312833A1 (en) * 2016-10-19 2018-04-25 Holosbase GmbH Decoding and encoding apparatus and corresponding methods
IN201627036613A (pt) * 2016-10-26 2016-11-18 Qualcomm Inc
US11395083B2 (en) * 2018-02-01 2022-07-19 Qualcomm Incorporated Scalable unified audio renderer
CN114582356A (zh) * 2020-11-30 2022-06-03 华为技术有限公司 一种音频编解码方法和装置

Also Published As

Publication number Publication date
JP2024520944A (ja) 2024-05-27
KR20240001226A (ko) 2024-01-03
WO2022242480A1 (zh) 2022-11-24
US20240087580A1 (en) 2024-03-14
CN115376527A (zh) 2022-11-22
CA3220588A1 (en) 2022-11-24
EP4322158A1 (en) 2024-02-14
TW202247148A (zh) 2022-12-01
TWI834163B (zh) 2024-03-01

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