BR112015029574A2 - dispositivo e método para extensão de largura de banda para sinais acústicos - Google Patents

dispositivo e método para extensão de largura de banda para sinais acústicos

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Publication number
BR112015029574A2
BR112015029574A2 BR112015029574A BR112015029574A BR112015029574A2 BR 112015029574 A2 BR112015029574 A2 BR 112015029574A2 BR 112015029574 A BR112015029574 A BR 112015029574A BR 112015029574 A BR112015029574 A BR 112015029574A BR 112015029574 A2 BR112015029574 A2 BR 112015029574A2
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BR
Brazil
Prior art keywords
frequency spectrum
bandwidth
high frequency
bandwidth extension
harmonic
Prior art date
Application number
BR112015029574A
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English (en)
Other versions
BR112015029574B1 (pt
Inventor
Nagisetty Srikanth
Liu Zongxian
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Panasonic Ip Corp America
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Publication date
Application filed by Panasonic Ip Corp America filed Critical Panasonic Ip Corp America
Publication of BR112015029574A2 publication Critical patent/BR112015029574A2/pt
Publication of BR112015029574B1 publication Critical patent/BR112015029574B1/pt

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    • 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
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • G10L21/0388—Details of processing therefor
    • 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
    • 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
    • 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
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • 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
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • 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
    • G10L19/035—Scalar quantisation
    • 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

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)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

resumo patente de invenção: "dispositivo e método para extensão de largura de banda para sinais acústicos". a finalidade da presente invenção é se estender de forma mais eficiente, utilizando uma taxa de bits baixa, a largura de banda de sinais de entrada possuindo uma estrutura harmônica, a fim de obter uma melhor qualidade de áudio. a presente invenção é instalada em um dispositivo que estende a largura de banda para a codificação e decodificação do sinal de áudio. essa codificação de extensão de largura de banda nova identifica um componente de espectro de baixa frequência possuindo a maior correlação com um sinal de largura de banda de alta frequência entre os sinais de entrada, duplica o espectro de alta frequência pelo ajuste de energia do dito componente, e mantém a relação harmônica entre o espectro de baixa frequência e o espectro de alta frequência duplicado pelo ajuste da posição de pico espectral do espectro de alta frequência duplicado, com base na frequência harmônica estimada a partir de um espectro de baixa frequência composto.
BR112015029574-6A 2013-06-11 2014-06-10 Aparelho e método de decodificação de sinal de áudio. BR112015029574B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2013-122985 2013-06-11
JP2013122985 2013-06-11
PCT/JP2014/003103 WO2014199632A1 (ja) 2013-06-11 2014-06-10 音響信号の帯域幅拡張を行う装置及び方法

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BR112015029574A2 true BR112015029574A2 (pt) 2017-07-25
BR112015029574B1 BR112015029574B1 (pt) 2021-12-21

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BR112015029574-6A BR112015029574B1 (pt) 2013-06-11 2014-06-10 Aparelho e método de decodificação de sinal de áudio.
BR122020016403-4A BR122020016403B1 (pt) 2013-06-11 2014-06-10 Aparelho de decodificação de sinal de áudio, aparelho de codificação de sinal de áudio, método de decodificação de sinal de áudio e método de codificação de sinal de áudio

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BR122020016403-4A BR122020016403B1 (pt) 2013-06-11 2014-06-10 Aparelho de decodificação de sinal de áudio, aparelho de codificação de sinal de áudio, método de decodificação de sinal de áudio e método de codificação de sinal de áudio

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US (4) US9489959B2 (pt)
EP (2) EP3731226A1 (pt)
JP (4) JP6407150B2 (pt)
KR (1) KR102158896B1 (pt)
CN (2) CN111477245B (pt)
BR (2) BR112015029574B1 (pt)
ES (1) ES2836194T3 (pt)
MX (1) MX353240B (pt)
PT (1) PT3010018T (pt)
RU (2) RU2658892C2 (pt)
WO (1) WO2014199632A1 (pt)

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Also Published As

Publication number Publication date
RU2015151169A (ru) 2017-06-05
JP2019008316A (ja) 2019-01-17
MX353240B (es) 2018-01-05
RU2018121035A3 (pt) 2019-03-05
RU2688247C2 (ru) 2019-05-21
EP3010018A1 (en) 2016-04-20
RU2658892C2 (ru) 2018-06-25
JP6773737B2 (ja) 2020-10-21
EP3010018A4 (en) 2016-06-15
US9747908B2 (en) 2017-08-29
CN105408957B (zh) 2020-02-21
CN111477245A (zh) 2020-07-31
US20190122679A1 (en) 2019-04-25
JP6407150B2 (ja) 2018-10-17
US20170025130A1 (en) 2017-01-26
WO2014199632A1 (ja) 2014-12-18
US20170323649A1 (en) 2017-11-09
EP3010018B1 (en) 2020-08-12
CN111477245B (zh) 2024-06-11
CN105408957A (zh) 2016-03-16
US10522161B2 (en) 2019-12-31
KR20160018497A (ko) 2016-02-17
PT3010018T (pt) 2020-11-13
US20160111103A1 (en) 2016-04-21
KR102158896B1 (ko) 2020-09-22
BR112015029574B1 (pt) 2021-12-21
ES2836194T3 (es) 2021-06-24
JP7330934B2 (ja) 2023-08-22
MX2015016109A (es) 2016-10-26
US9489959B2 (en) 2016-11-08
BR122020016403B1 (pt) 2022-09-06
EP3731226A1 (en) 2020-10-28
RU2018121035A (ru) 2019-03-05
JP2019008317A (ja) 2019-01-17
JPWO2014199632A1 (ja) 2017-02-23
RU2015151169A3 (pt) 2018-03-02
US10157622B2 (en) 2018-12-18
JP2021002069A (ja) 2021-01-07

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