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BR112022003440A2 - Codec de efeitos de baixa latência, baixa frequência - Google Patents

Codec de efeitos de baixa latência, baixa frequência

Info

Publication number
BR112022003440A2
BR112022003440A2 BR112022003440A BR112022003440A BR112022003440A2 BR 112022003440 A2 BR112022003440 A2 BR 112022003440A2 BR 112022003440 A BR112022003440 A BR 112022003440A BR 112022003440 A BR112022003440 A BR 112022003440A BR 112022003440 A2 BR112022003440 A2 BR 112022003440A2
Authority
BR
Brazil
Prior art keywords
channel signal
low
lfe channel
coefficients
lfe
Prior art date
Application number
BR112022003440A
Other languages
English (en)
Inventor
David Mcgrath
Rishabh Tyagi
Original Assignee
Dolby Laboratories Licensing Corp
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 Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
Publication of BR112022003440A2 publication Critical patent/BR112022003440A2/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
    • G10L19/02—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
    • G10L19/008—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
    • G10L19/012—Comfort noise or silence 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
    • 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
    • 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 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
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/21—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being power information

Landscapes

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

Abstract

codec de efeitos de baixa latência, baixa frequência. em algumas implementações, um método de codificar um canal de efeito de baixa frequência (lfe) compreende: receber um sinal de canal lfe de domínio de tempo; filtrar, utilizando um filtro passa-baixo, o sinal de canal lfe de domínio de tempo; converter o sinal de canal lfe de domínio de tempo filtrado em uma representação de domínio de frequência do sinal de canal lfe que inclui um número de coeficientes que representam um espectro de frequência do sinal de canal lfe; dispor coeficientes em um número de grupos de subbanda correspondendo a bandas de frequência diferentes do sinal de canal lfe; quantizar coeficientes em cada grupo de subbanda de acordo com uma curva de resposta de frequência do filtro passa-baixo; codificar os coeficientes quantizados em cada grupo de subbanda utilizando um codificador de entropia sintonizado para o grupo de subbanda; e gerar um fluxo de bits incluindo os coeficientes quantizados codificados e armazenar o fluxo de bits em um dispositivo de armazenamento ou streaming o fluxo de bits para um dispositivo a jusante.
BR112022003440A 2019-09-03 2020-09-01 Codec de efeitos de baixa latência, baixa frequência BR112022003440A2 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201962895049P 2019-09-03 2019-09-03
US202063069420P 2020-08-24 2020-08-24
PCT/US2020/048954 WO2021046060A1 (en) 2019-09-03 2020-09-01 Low-latency, low-frequency effects codec

Publications (1)

Publication Number Publication Date
BR112022003440A2 true BR112022003440A2 (pt) 2022-05-24

Family

ID=72474028

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112022003440A BR112022003440A2 (pt) 2019-09-03 2020-09-01 Codec de efeitos de baixa latência, baixa frequência

Country Status (12)

Country Link
US (1) US20220293112A1 (pt)
EP (1) EP4026122A1 (pt)
JP (1) JP2022547038A (pt)
KR (1) KR20220054645A (pt)
CN (1) CN114424282A (pt)
AR (2) AR125511A2 (pt)
AU (1) AU2020340937A1 (pt)
BR (1) BR112022003440A2 (pt)
CA (1) CA3153258A1 (pt)
IL (1) IL290684A (pt)
MX (1) MX2022002323A (pt)
WO (1) WO2021046060A1 (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021061935A1 (en) * 2019-09-25 2021-04-01 MIXHalo Corp. Multi-stride packet payload mapping for robust transmission of data

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JP2005027163A (ja) * 2003-07-04 2005-01-27 Pioneer Electronic Corp 音声データ処理装置、音声データ処理方法、そのプログラム、および、そのプログラムを記録した記録媒体
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US10812928B1 (en) * 2019-08-12 2020-10-20 Facebook Technologies, Llc Audio service design for operating systems

Also Published As

Publication number Publication date
CA3153258A1 (en) 2021-03-11
US20220293112A1 (en) 2022-09-15
EP4026122A1 (en) 2022-07-13
AR125559A2 (es) 2023-07-26
WO2021046060A1 (en) 2021-03-11
AR125511A2 (es) 2023-07-26
KR20220054645A (ko) 2022-05-03
JP2022547038A (ja) 2022-11-10
MX2022002323A (es) 2022-04-06
IL290684A (en) 2022-04-01
CN114424282A (zh) 2022-04-29
AU2020340937A1 (en) 2022-03-24

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