BR112014016847A8 - método e sistema para codificar dados de áudio com compensação de baixa frequênciaadaptável - Google Patents

método e sistema para codificar dados de áudio com compensação de baixa frequênciaadaptável

Info

Publication number
BR112014016847A8
BR112014016847A8 BR112014016847A BR112014016847A BR112014016847A8 BR 112014016847 A8 BR112014016847 A8 BR 112014016847A8 BR 112014016847 A BR112014016847 A BR 112014016847A BR 112014016847 A BR112014016847 A BR 112014016847A BR 112014016847 A8 BR112014016847 A8 BR 112014016847A8
Authority
BR
Brazil
Prior art keywords
low frequency
audio data
frequency band
compensation
data
Prior art date
Application number
BR112014016847A
Other languages
English (en)
Other versions
BR112014016847B1 (pt
BR112014016847A2 (pt
Inventor
Biswas Arijit
a davidson Grant
S Vinton Mark
Schug Michael
Melkote Vinay
Original Assignee
Dolby Int Ab
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 Int Ab, Dolby Laboratories Licensing Corp filed Critical Dolby Int Ab
Publication of BR112014016847A2 publication Critical patent/BR112014016847A2/pt
Publication of BR112014016847A8 publication Critical patent/BR112014016847A8/pt
Publication of BR112014016847B1 publication Critical patent/BR112014016847B1/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
    • G10L19/028—Noise substitution, i.e. substituting non-tonal spectral components by noisy source
    • 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
    • G10L19/26—Pre-filtering or post-filtering
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Computational Linguistics (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

resumo patente de invenção: "método e sistema para codificar dados de áudio com compensação de baixa frequência adaptável". refere-se a um método para determinar a alocação de bits de mantissa de valores de dados de áudio de dados de domínio de frequência de áudio a serem codificados. o método de alocação inclui uma etapa de determinar valores de mascaramento para valores de dados de áudio, que são incluídos realizando-se compensação de baixa frequência adaptável nos dados de áudio de cada banda de frequência de um conjunto de bandas de baixa frequência dos dados de áudio. a compensação de baixa frequência adaptável inclui etapas de: realizar a detecção de tonalidade nos dados de áudio para gerar dados de controle de compensação indicativos e se cada banda de frequência no conjunto de bandas de baixa frequência tem conteúdo tonal proeminente; e realizar a compensação de baixa frequência nos dados de áudio em cada banda de frequência no conjunto de bandas de baixa frequência que tem conteúdo tonal proeminente conforme indicado pelos dados de controle de compensação, mas não realizar a compensação de baixa frequência nos dados de áudio em nenhuma outra banda de frequência no conjunto de bandas de baixa frequência.
BR112014016847-4A 2012-01-09 2012-09-25 Método de codificação de áudio, codificador de áudio, sistema e método para decodificar dados de áudio codificados BR112014016847B1 (pt)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201261584478P 2012-01-09 2012-01-09
US61/584,478 2012-01-09
US13/588,890 US8527264B2 (en) 2012-01-09 2012-08-17 Method and system for encoding audio data with adaptive low frequency compensation
US13/588,890 2012-08-17
PCT/US2012/057132 WO2013106098A1 (en) 2012-01-09 2012-09-25 Method and system for encoding audio data with adaptive low frequency compensation

Publications (3)

Publication Number Publication Date
BR112014016847A2 BR112014016847A2 (pt) 2017-06-13
BR112014016847A8 true BR112014016847A8 (pt) 2017-07-04
BR112014016847B1 BR112014016847B1 (pt) 2020-12-15

Family

ID=48744528

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112014016847-4A BR112014016847B1 (pt) 2012-01-09 2012-09-25 Método de codificação de áudio, codificador de áudio, sistema e método para decodificar dados de áudio codificados

Country Status (19)

Country Link
US (2) US8527264B2 (pt)
EP (1) EP2803067B1 (pt)
JP (2) JP5755379B2 (pt)
KR (1) KR101621704B1 (pt)
AR (1) AR088007A1 (pt)
AU (1) AU2012364749B2 (pt)
BR (1) BR112014016847B1 (pt)
CA (1) CA2858663C (pt)
CL (1) CL2014001805A1 (pt)
HK (1) HK1201976A1 (pt)
IL (1) IL233029A0 (pt)
IN (1) IN2014CN04457A (pt)
MX (1) MX335999B (pt)
MY (1) MY187728A (pt)
RU (1) RU2583717C1 (pt)
SG (1) SG11201402983UA (pt)
TW (1) TWI470621B (pt)
UA (1) UA110291C2 (pt)
WO (1) WO2013106098A1 (pt)

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US8697975B2 (en) * 2008-07-29 2014-04-15 Yamaha Corporation Musical performance-related information output device, system including musical performance-related information output device, and electronic musical instrument
US8737638B2 (en) * 2008-07-30 2014-05-27 Yamaha Corporation Audio signal processing device, audio signal processing system, and audio signal processing method
JP5782677B2 (ja) 2010-03-31 2015-09-24 ヤマハ株式会社 コンテンツ再生装置および音声処理システム
EP2573761B1 (en) 2011-09-25 2018-02-14 Yamaha Corporation Displaying content in relation to music reproduction by means of information processing apparatus independent of music reproduction apparatus
JP5494677B2 (ja) 2012-01-06 2014-05-21 ヤマハ株式会社 演奏装置及び演奏プログラム
US9830917B2 (en) 2013-02-14 2017-11-28 Dolby Laboratories Licensing Corporation Methods for audio signal transient detection and decorrelation control
TWI618051B (zh) 2013-02-14 2018-03-11 杜比實驗室特許公司 用於利用估計之空間參數的音頻訊號增強的音頻訊號處理方法及裝置
TWI618050B (zh) 2013-02-14 2018-03-11 杜比實驗室特許公司 用於音訊處理系統中之訊號去相關的方法及設備
RU2630370C9 (ru) 2013-02-14 2017-09-26 Долби Лабораторис Лайсэнзин Корпорейшн Способы управления межканальной когерентностью звуковых сигналов, подвергнутых повышающему микшированию
EP2980792A1 (en) * 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for generating an enhanced signal using independent noise-filling
JP6492915B2 (ja) * 2015-04-15 2019-04-03 富士通株式会社 符号化装置、符号化方法、及びプログラム
EP3288031A1 (en) 2016-08-23 2018-02-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for encoding an audio signal using a compensation value
EP3649640A1 (en) * 2017-07-03 2020-05-13 Dolby International AB Low complexity dense transient events detection and coding
CN108616277B (zh) * 2018-05-22 2021-07-13 电子科技大学 一种多通道频域补偿的快速校正方法

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Also Published As

Publication number Publication date
JP2015504179A (ja) 2015-02-05
JP2015187743A (ja) 2015-10-29
CN104040623A (zh) 2014-09-10
SG11201402983UA (en) 2014-09-26
RU2583717C1 (ru) 2016-05-10
AR088007A1 (es) 2014-04-30
MX335999B (es) 2016-01-07
UA110291C2 (en) 2015-12-10
IL233029A0 (en) 2014-07-31
MX2014007400A (es) 2015-03-05
WO2013106098A1 (en) 2013-07-18
KR20140104470A (ko) 2014-08-28
BR112014016847B1 (pt) 2020-12-15
IN2014CN04457A (pt) 2015-09-04
CL2014001805A1 (es) 2015-02-27
CA2858663A1 (en) 2013-07-18
EP2803067B1 (en) 2017-04-05
KR101621704B1 (ko) 2016-05-17
US8527264B2 (en) 2013-09-03
MY187728A (en) 2021-10-14
BR112014016847A2 (pt) 2017-06-13
TWI470621B (zh) 2015-01-21
EP2803067A1 (en) 2014-11-19
US20140324441A1 (en) 2014-10-30
US9275649B2 (en) 2016-03-01
US20130179175A1 (en) 2013-07-11
JP6093801B2 (ja) 2017-03-08
JP5755379B2 (ja) 2015-07-29
AU2012364749B2 (en) 2015-08-13
HK1201976A1 (en) 2015-09-11
TW201329961A (zh) 2013-07-16
AU2012364749A1 (en) 2014-07-03
CA2858663C (en) 2017-03-14

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Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 25/09/2012, OBSERVADAS AS CONDICOES LEGAIS.

B25G Requested change of headquarter approved

Owner name: DOLBY LABORATORIES LICENSING CORPORATION (US) ; DOLBY INTERNATIONAL AB (IE)