HK1143240A1 - Efficient design of mdct / imdct filterbanks for speech and audio coding applications - Google Patents

Efficient design of mdct / imdct filterbanks for speech and audio coding applications

Info

Publication number
HK1143240A1
HK1143240A1 HK10109678.8A HK10109678A HK1143240A1 HK 1143240 A1 HK1143240 A1 HK 1143240A1 HK 10109678 A HK10109678 A HK 10109678A HK 1143240 A1 HK1143240 A1 HK 1143240A1
Authority
HK
Hong Kong
Prior art keywords
filterbanks
imdct
mdct
speech
audio coding
Prior art date
Application number
HK10109678.8A
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 HK1143240A1 publication Critical patent/HK1143240A1/xx

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)
HK10109678.8A 2007-09-19 2010-10-13 Efficient design of mdct / imdct filterbanks for speech and audio coding applications HK1143240A1 (en)

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
HK1143240A1 true HK1143240A1 (en) 2010-12-24

Family

ID=40039658

Family Applications (1)

Application Number Title Priority Date Filing Date
HK10109678.8A HK1143240A1 (en) 2007-09-19 2010-10-13 Efficient design of mdct / imdct filterbanks for speech and audio coding applications

Country Status (12)

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

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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
CN101930425B (zh) * 2009-06-24 2015-09-30 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
EP2309497A3 (en) * 2009-07-07 2011-04-20 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
BR122021003884B1 (pt) 2010-08-12 2021-11-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V. Reamostrar sinais de saída de codecs de áudio com base em qmf
CN103229235B (zh) * 2010-11-24 2015-12-09 Lg电子株式会社 语音信号编码方法和语音信号解码方法
US9824066B2 (en) 2011-01-10 2017-11-21 Qualcomm Incorporated 32-point transform for media data coding
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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
WO2018201113A1 (en) * 2017-04-28 2018-11-01 Dts, Inc. Audio coder window and transform implementations

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FR2675969B1 (fr) 1991-04-24 1994-02-11 France Telecom Procede et dispositif de codage-decodage d'un signal numerique.
RU2131169C1 (ru) 1993-06-30 1999-05-27 Сони Корпорейшн Устройство кодирования сигнала, устройство декодирования сигнала, носитель записи и способ кодирования и декодирования
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Also Published As

Publication number Publication date
WO2009039451A2 (en) 2009-03-26
KR101329514B1 (ko) 2013-11-13
EP2206111A2 (en) 2010-07-14
WO2009039451A3 (en) 2009-05-22
CN101796578A (zh) 2010-08-04
TW200926146A (en) 2009-06-16
US20090094038A1 (en) 2009-04-09
CN101796578B (zh) 2013-04-10
MX2010002848A (es) 2010-04-01
KR20100063122A (ko) 2010-06-10
BRPI0817003A2 (pt) 2015-03-31
JP2010539625A (ja) 2010-12-16
AU2008302070B2 (en) 2011-06-16
US8548815B2 (en) 2013-10-01
AU2008302070A1 (en) 2009-03-26
TWI398854B (zh) 2013-06-11
CA2695741A1 (en) 2009-03-26

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