BRPI0821091A2 - Codificação/decodificação por transformada, com janelas adaptativas - Google Patents

Codificação/decodificação por transformada, com janelas adaptativas

Info

Publication number
BRPI0821091A2
BRPI0821091A2 BRPI0821091-8A BRPI0821091A BRPI0821091A2 BR PI0821091 A2 BRPI0821091 A2 BR PI0821091A2 BR PI0821091 A BRPI0821091 A BR PI0821091A BR PI0821091 A2 BRPI0821091 A2 BR PI0821091A2
Authority
BR
Brazil
Prior art keywords
decoding
transform encoding
adaptive windows
adaptive
windows
Prior art date
Application number
BRPI0821091-8A
Other languages
English (en)
Inventor
Pierrick Philippe
David Virette
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 BRPI0821091A2 publication Critical patent/BRPI0821091A2/pt
Publication of BRPI0821091B1 publication Critical patent/BRPI0821091B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform 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
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
BRPI0821091-8A 2007-12-21 2008-12-11 processo e dispositivo de codificação/decodificação por transformada com janelas adaptativas, e memória legível por computador BRPI0821091B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0760258 2007-12-21
FR0760258 2007-12-21
PCT/FR2008/052286 WO2009081003A1 (fr) 2007-12-21 2008-12-11 Codage/decodage par transformee, a fenetres adaptatives

Publications (2)

Publication Number Publication Date
BRPI0821091A2 true BRPI0821091A2 (pt) 2015-06-16
BRPI0821091B1 BRPI0821091B1 (pt) 2020-11-10

Family

ID=39689331

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0821091-8A BRPI0821091B1 (pt) 2007-12-21 2008-12-11 processo e dispositivo de codificação/decodificação por transformada com janelas adaptativas, e memória legível por computador

Country Status (9)

Country Link
US (1) US8253609B2 (pt)
EP (1) EP2232489B1 (pt)
JP (1) JP5328804B2 (pt)
KR (1) KR101408183B1 (pt)
CN (1) CN101952888B (pt)
BR (1) BRPI0821091B1 (pt)
ES (1) ES2666719T3 (pt)
RU (1) RU2488898C2 (pt)
WO (1) WO2009081003A1 (pt)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2977439A1 (fr) * 2011-06-28 2013-01-04 France Telecom Fenetres de ponderation en codage/decodage par transformee avec recouvrement, optimisees en retard.
FR2977969A1 (fr) * 2011-07-12 2013-01-18 France Telecom Adaptation de fenetres de ponderation d'analyse ou de synthese pour un codage ou decodage par transformee
EP2665208A1 (en) * 2012-05-14 2013-11-20 Thomson Licensing Method and apparatus for compressing and decompressing a Higher Order Ambisonics signal representation
PT3028275T (pt) 2013-08-23 2017-11-21 Fraunhofer Ges Forschung Aparelho e método para processamento de um sinal de áudio utilizando uma combinação numa faixa de sobreposição
US10224042B2 (en) 2016-10-31 2019-03-05 Qualcomm Incorporated Encoding of multiple audio signals
CN113630104B (zh) * 2021-08-18 2022-08-23 杭州电子科技大学 图滤波器的滤波器组频率选择性误差交替优化设计方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3093178B2 (ja) * 1989-01-27 2000-10-03 ドルビー・ラボラトリーズ・ライセンシング・コーポレーション 高品質オーディオ用低ビットレート変換エンコーダ及びデコーダ
CN1062963C (zh) * 1990-04-12 2001-03-07 多尔拜实验特许公司 用于产生高质量声音信号的解码器和编码器
US5848391A (en) * 1996-07-11 1998-12-08 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Method subband of coding and decoding audio signals using variable length windows
US5903872A (en) * 1997-10-17 1999-05-11 Dolby Laboratories Licensing Corporation Frame-based audio coding with additional filterbank to attenuate spectral splatter at frame boundaries
US5899969A (en) * 1997-10-17 1999-05-04 Dolby Laboratories Licensing Corporation Frame-based audio coding with gain-control words
US5913190A (en) * 1997-10-17 1999-06-15 Dolby Laboratories Licensing Corporation Frame-based audio coding with video/audio data synchronization by audio sample rate conversion
MXPA03010237A (es) * 2001-05-10 2004-03-16 Dolby Lab Licensing Corp Mejoramiento del funcionamiento de transitorios en sistemas de codificacion de audio de baja tasa de transferencia de bitios mediante la reduccion del pre-ruido.
US6963842B2 (en) * 2001-09-05 2005-11-08 Creative Technology Ltd. Efficient system and method for converting between different transform-domain signal representations
US7302111B2 (en) * 2001-09-12 2007-11-27 Micronic Laser Systems A.B. Graphics engine for high precision lithography
DE60208426T2 (de) * 2001-11-02 2006-08-24 Matsushita Electric Industrial Co., Ltd., Kadoma Vorrichtung zur signalkodierung, signaldekodierung und system zum verteilen von audiodaten
JP3881943B2 (ja) * 2002-09-06 2007-02-14 松下電器産業株式会社 音響符号化装置及び音響符号化方法
AU2003208517A1 (en) * 2003-03-11 2004-09-30 Nokia Corporation Switching between coding schemes
FR2911228A1 (fr) * 2007-01-05 2008-07-11 France Telecom Codage par transformee, utilisant des fenetres de ponderation et a faible retard.
EP2107556A1 (en) * 2008-04-04 2009-10-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio transform coding using pitch correction
MY181231A (en) * 2008-07-11 2020-12-21 Fraunhofer Ges Zur Forderung Der Angenwandten Forschung E V Audio encoder and decoder for encoding and decoding audio samples
US8457975B2 (en) * 2009-01-28 2013-06-04 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Audio decoder, audio encoder, methods for decoding and encoding an audio signal and computer program

Also Published As

Publication number Publication date
RU2488898C2 (ru) 2013-07-27
KR101408183B1 (ko) 2014-06-19
JP5328804B2 (ja) 2013-10-30
US8253609B2 (en) 2012-08-28
CN101952888B (zh) 2013-10-09
JP2011507440A (ja) 2011-03-03
RU2010130311A (ru) 2012-01-27
EP2232489B1 (fr) 2018-02-07
WO2009081003A1 (fr) 2009-07-02
CN101952888A (zh) 2011-01-19
KR20110111231A (ko) 2011-10-10
EP2232489A1 (fr) 2010-09-29
ES2666719T3 (es) 2018-05-07
US20100283639A1 (en) 2010-11-11
BRPI0821091B1 (pt) 2020-11-10

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Legal Events

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

Ipc: H04N 19/60 (2014.01), G10L 19/02 (2013.01), G10L 1

B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 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 10/11/2020, OBSERVADAS AS CONDICOES LEGAIS.