BRPI0813178A2 - Codificação de sinais digitais de áudio - Google Patents

Codificação de sinais digitais de áudio

Info

Publication number
BRPI0813178A2
BRPI0813178A2 BRPI0813178-3A2A BRPI0813178A BRPI0813178A2 BR PI0813178 A2 BRPI0813178 A2 BR PI0813178A2 BR PI0813178 A BRPI0813178 A BR PI0813178A BR PI0813178 A2 BRPI0813178 A2 BR PI0813178A2
Authority
BR
Brazil
Prior art keywords
quantification
module
signal
indexes
encoder
Prior art date
Application number
BRPI0813178-3A2A
Other languages
English (en)
Inventor
Balazs Kovesi
Alain Le Guyader
Stephane Ragot
Original Assignee
France Telecom
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 France Telecom filed Critical France Telecom
Publication of BRPI0813178A2 publication Critical patent/BRPI0813178A2/pt
Publication of BRPI0813178B1 publication Critical patent/BRPI0813178B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
    • 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
    • G10L19/04—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Dental Preparations (AREA)
BRPI0813178-3A 2007-06-15 2008-06-13 Processo de codificação de um sinal de áudio de entrada, processo de decodificação escalável de um sinal de áudio, codificador de sinal de áudio de entrada, e codificador de um sinal de áudio BRPI0813178B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR07557792 2007-06-15
FR0755792 2007-06-15
PCT/FR2008/051059 WO2009004227A1 (fr) 2007-06-15 2008-06-13 Codage de signaux audionumériques

Publications (2)

Publication Number Publication Date
BRPI0813178A2 true BRPI0813178A2 (pt) 2014-12-23
BRPI0813178B1 BRPI0813178B1 (pt) 2020-05-12

Family

ID=38577930

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0813178-3A BRPI0813178B1 (pt) 2007-06-15 2008-06-13 Processo de codificação de um sinal de áudio de entrada, processo de decodificação escalável de um sinal de áudio, codificador de sinal de áudio de entrada, e codificador de um sinal de áudio

Country Status (9)

Country Link
US (1) US8719012B2 (pt)
EP (1) EP2171713B1 (pt)
JP (1) JP5451603B2 (pt)
AT (1) ATE502377T1 (pt)
BR (1) BRPI0813178B1 (pt)
DE (1) DE602008005593D1 (pt)
ES (1) ES2363190T3 (pt)
PL (1) PL2171713T3 (pt)
WO (1) WO2009004227A1 (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2938688A1 (fr) * 2008-11-18 2010-05-21 France Telecom Codage avec mise en forme du bruit dans un codeur hierarchique
FR2969360A1 (fr) * 2010-12-16 2012-06-22 France Telecom Codage perfectionne d'un etage d'amelioration dans un codeur hierarchique
CN110444216B (zh) 2014-05-01 2022-10-21 日本电信电话株式会社 解码装置、解码方法、记录介质
CN115691536B (zh) * 2022-11-15 2025-08-22 湖南联智科技股份有限公司 一种应用于工业音频处理的音频消噪方法、设备及介质

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE145775T1 (de) 1988-02-29 1996-12-15 Sony Corp Verfahren und einrichtung zur digitalsignalverarbeitung
JP2551147B2 (ja) * 1989-05-19 1996-11-06 国際電信電話株式会社 音声符号化方式
JPH03181232A (ja) * 1989-12-11 1991-08-07 Toshiba Corp 可変レート符号化方式
JPH0472909A (ja) * 1990-07-13 1992-03-06 Sony Corp オーディオ信号の量子化誤差低減装置
EP0632597B1 (en) 1993-06-29 2002-08-28 Sony Corporation Audio signal transmitting apparatus and the method thereof
US5651090A (en) * 1994-05-06 1997-07-22 Nippon Telegraph And Telephone Corporation Coding method and coder for coding input signals of plural channels using vector quantization, and decoding method and decoder therefor
US5956674A (en) * 1995-12-01 1999-09-21 Digital Theater Systems, Inc. Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels
US6496798B1 (en) * 1999-09-30 2002-12-17 Motorola, Inc. Method and apparatus for encoding and decoding frames of voice model parameters into a low bit rate digital voice message
JP3559488B2 (ja) * 2000-02-16 2004-09-02 日本電信電話株式会社 音響信号の階層符号化方法及び復号化方法
US6584438B1 (en) * 2000-04-24 2003-06-24 Qualcomm Incorporated Frame erasure compensation method in a variable rate speech coder
FR2859566B1 (fr) * 2003-09-05 2010-11-05 Eads Telecom Procede de transmission d'un flux d'information par insertion a l'interieur d'un flux de donnees de parole, et codec parametrique pour sa mise en oeuvre
US7930176B2 (en) * 2005-05-20 2011-04-19 Broadcom Corporation Packet loss concealment for block-independent speech codecs
KR101196506B1 (ko) * 2007-06-11 2012-11-01 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 임펄스형 부분 및 정적 부분을 갖는 오디오 신호를 인코딩하는 오디오 인코더 및 인코딩 방법, 디코더, 디코딩 방법 및 인코딩된 오디오 신호

Also Published As

Publication number Publication date
JP5451603B2 (ja) 2014-03-26
EP2171713A1 (fr) 2010-04-07
PL2171713T3 (pl) 2011-08-31
JP2010532489A (ja) 2010-10-07
US20100145712A1 (en) 2010-06-10
BRPI0813178B1 (pt) 2020-05-12
DE602008005593D1 (de) 2011-04-28
EP2171713B1 (fr) 2011-03-16
US8719012B2 (en) 2014-05-06
ATE502377T1 (de) 2011-04-15
ES2363190T3 (es) 2011-07-26
WO2009004227A1 (fr) 2009-01-08

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Legal Events

Date Code Title Description
B15K Others concerning applications: alteration of classification

Ipc: H04B 14/04 (2006.01), G10L 19/032 (2013.01), G10L

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: 10 (DEZ) ANOS CONTADOS A PARTIR DE 12/05/2020, OBSERVADAS AS CONDICOES LEGAIS.