BRPI0817003A2 - Projeto eficiente de filtros de banco mdct/imdct para aplicativos de codificação de áudio e discurso - Google Patents

Projeto eficiente de filtros de banco mdct/imdct para aplicativos de codificação de áudio e discurso

Info

Publication number
BRPI0817003A2
BRPI0817003A2 BRPI0817003A BRPI0817003A2 BR PI0817003 A2 BRPI0817003 A2 BR PI0817003A2 BR PI0817003 A BRPI0817003 A BR PI0817003A BR PI0817003 A2 BRPI0817003 A2 BR PI0817003A2
Authority
BR
Brazil
Prior art keywords
imdct
mdct
speech
efficient
audio coding
Prior art date
Application number
Other languages
English (en)
Inventor
Ravi Kiran Chivukula
Yuriy Reznik
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of BRPI0817003A2 publication Critical patent/BRPI0817003A2/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
    • G10L19/0212—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
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
    • G06F17/147—Discrete orthonormal transforms, e.g. discrete cosine transform, discrete sine transform, and variations therefrom, e.g. modified discrete cosine transform, integer transforms approximating the discrete cosine transform

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Data Mining & Analysis (AREA)
  • Theoretical Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Software Systems (AREA)
  • Signal Processing (AREA)
  • Algebra (AREA)
  • General Engineering & Computer Science (AREA)
  • Discrete Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Databases & Information Systems (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Complex Calculations (AREA)
  • Analogue/Digital Conversion (AREA)
BRPI0817003 2007-09-19 2008-09-19 Projeto eficiente de filtros de banco mdct/imdct para aplicativos de codificação de áudio e discurso BRPI0817003A2 (pt)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US97370907P 2007-09-19 2007-09-19
US98940007P 2007-11-20 2007-11-20
US12/212,920 US8548815B2 (en) 2007-09-19 2008-09-18 Efficient design of MDCT / IMDCT filterbanks for speech and audio coding applications
PCT/US2008/077129 WO2009039451A2 (en) 2007-09-19 2008-09-19 Efficient design of mdct / imdct filterbanks for speech and audio coding applications

Publications (1)

Publication Number Publication Date
BRPI0817003A2 true BRPI0817003A2 (pt) 2015-03-31

Family

ID=40039658

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0817003 BRPI0817003A2 (pt) 2007-09-19 2008-09-19 Projeto eficiente de filtros de banco mdct/imdct para aplicativos de codificação de áudio e discurso

Country Status (12)

Country Link
US (1) US8548815B2 (pt)
EP (1) EP2206111A2 (pt)
JP (1) JP2010539625A (pt)
KR (1) KR101329514B1 (pt)
CN (1) CN101796578B (pt)
AU (1) AU2008302070B2 (pt)
BR (1) BRPI0817003A2 (pt)
CA (1) CA2695741A1 (pt)
HK (1) HK1143240A1 (pt)
MX (1) MX2010002848A (pt)
TW (1) TWI398854B (pt)
WO (1) WO2009039451A2 (pt)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9110849B2 (en) 2009-04-15 2015-08-18 Qualcomm Incorporated Computing even-sized discrete cosine transforms
US9069713B2 (en) 2009-06-05 2015-06-30 Qualcomm Incorporated 4X4 transform for media coding
US9075757B2 (en) 2009-06-24 2015-07-07 Qualcomm Incorporated 16-point transform for media data coding
US9118898B2 (en) 2009-06-24 2015-08-25 Qualcomm Incorporated 8-point transform for media data coding
CN101930426B (zh) * 2009-06-24 2015-08-05 华为技术有限公司 信号处理方法、数据处理方法及装置
US9081733B2 (en) 2009-06-24 2015-07-14 Qualcomm Incorporated 16-point transform for media data coding
EP2273495A1 (en) * 2009-07-07 2011-01-12 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Digital audio signal processing system
CN102104776A (zh) * 2009-12-21 2011-06-22 康佳集团股份有限公司 一种网络电视平台mpeg音频多相合成滤波方法
US8000968B1 (en) 2011-04-26 2011-08-16 Huawei Technologies Co., Ltd. Method and apparatus for switching speech or audio signals
BR122021003887B1 (pt) 2010-08-12 2021-08-24 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E. V. Reamostrar sinais de saída de codecs de áudio com base em qmf
KR101418227B1 (ko) 2010-11-24 2014-07-09 엘지전자 주식회사 스피치 시그널 부호화 방법 및 복호화 방법
US9824066B2 (en) 2011-01-10 2017-11-21 Qualcomm Incorporated 32-point transform for media data coding
JP5762620B2 (ja) 2011-03-28 2015-08-12 ドルビー ラボラトリーズ ライセンシング コーポレイション 低周波数エフェクトチャネルのための複雑さが低減された変換
CN102568485B (zh) * 2011-12-30 2013-12-11 展讯通信（上海）有限公司 音频信号的频时转换方法及装置
JP6089878B2 (ja) * 2013-03-28 2017-03-08 富士通株式会社 直交変換装置、直交変換方法及び直交変換用コンピュータプログラムならびにオーディオ復号装置
EP2830055A1 (en) * 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Context-based entropy coding of sample values of a spectral envelope
CN107452391B (zh) 2014-04-29 2020-08-25 华为技术有限公司 音频编码方法及相关装置
KR102615903B1 (ko) 2017-04-28 2023-12-19 디티에스, 인코포레이티드 오디오 코더 윈도우 및 변환 구현들

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2675969B1 (fr) 1991-04-24 1994-02-11 France Telecom Procede et dispositif de codage-decodage d'un signal numerique.
PL173718B1 (pl) 1993-06-30 1998-04-30 Sony Corp Sposób i urządzenie do kodowania sygnałów cyfrowych
US5719998A (en) 1995-06-12 1998-02-17 S3, Incorporated Partitioned decompression of audio data using audio decoder engine for computationally intensive processing
US6154762A (en) * 1998-06-03 2000-11-28 Microsoft Corporation Fast system and method for computing modulated lapped transforms
WO2001059603A1 (en) 2000-02-09 2001-08-16 Cheng T C Fast method for the forward and inverse mdct in audio coding
JP2002135122A (ja) 2000-10-19 2002-05-10 Nec Corp オーディオ信号符号化装置
DE10129240A1 (de) * 2001-06-18 2003-01-02 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Verarbeiten von zeitdiskreten Audio-Abtastwerten
KR100519260B1 (ko) * 2002-02-21 2005-10-06 주식회사 애드일렉코 고속 최적화된 무선마이크 장치 및 그 제어방법
US7536305B2 (en) * 2002-09-04 2009-05-19 Microsoft Corporation Mixed lossless audio compression
EP2665294A2 (en) 2003-03-04 2013-11-20 Core Wireless Licensing S.a.r.l. Support of a multichannel audio extension
TW594674B (en) 2003-03-14 2004-06-21 Mediatek Inc Encoder and a encoding method capable of detecting audio signal transient
JP4429316B2 (ja) 2003-09-29 2010-03-10 エージェンシー フォー サイエンス，テクノロジー アンド リサーチ 時間ドメインから周波数ドメインへ及びそれとは逆にデジタル信号のドメイン変換を実行する装置及び媒体
TWI227866B (en) 2003-11-07 2005-02-11 Mediatek Inc Subband analysis/synthesis filtering method
KR100530377B1 (ko) 2003-12-30 2005-11-22 삼성전자주식회사 엠펙 오디오 디코더의 합성필터 및 그 디코딩 방법
US20080249765A1 (en) * 2004-01-28 2008-10-09 Koninklijke Philips Electronic, N.V. Audio Signal Decoding Using Complex-Valued Data
KR101220621B1 (ko) * 2004-11-05 2013-01-18 파나소닉 주식회사 부호화 장치 및 부호화 방법
CN100546197C (zh) 2006-08-17 2009-09-30 上海交通大学 适用于多音频标准通用滤波器单元的vlsi实现方法
EP2186088B1 (en) * 2007-08-27 2017-11-15 Telefonaktiebolaget LM Ericsson (publ) Low-complexity spectral analysis/synthesis using selectable time resolution

Also Published As

Publication number Publication date
WO2009039451A3 (en) 2009-05-22
KR20100063122A (ko) 2010-06-10
TWI398854B (zh) 2013-06-11
AU2008302070A1 (en) 2009-03-26
KR101329514B1 (ko) 2013-11-13
CN101796578B (zh) 2013-04-10
AU2008302070B2 (en) 2011-06-16
CN101796578A (zh) 2010-08-04
TW200926146A (en) 2009-06-16
US20090094038A1 (en) 2009-04-09
WO2009039451A2 (en) 2009-03-26
MX2010002848A (es) 2010-04-01
HK1143240A1 (en) 2010-12-24
EP2206111A2 (en) 2010-07-14
US8548815B2 (en) 2013-10-01
CA2695741A1 (en) 2009-03-26
JP2010539625A (ja) 2010-12-16

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Legal Events

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B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2385 DE 20-09-2016 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.