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MX2010006471A - Algoritmos rapidos para calculo de dct-ii de 5 puntos, dct-iv y dst iv y arquitecturas. - Google Patents

Algoritmos rapidos para calculo de dct-ii de 5 puntos, dct-iv y dst iv y arquitecturas.

Info

Publication number
MX2010006471A
MX2010006471A MX2010006471A MX2010006471A MX2010006471A MX 2010006471 A MX2010006471 A MX 2010006471A MX 2010006471 A MX2010006471 A MX 2010006471A MX 2010006471 A MX2010006471 A MX 2010006471A MX 2010006471 A MX2010006471 A MX 2010006471A
Authority
MX
Mexico
Prior art keywords
dct
point
dst
mdct
transform
Prior art date
Application number
MX2010006471A
Other languages
English (en)
Inventor
Yuriy Reznik
Ravi Kiran Chivukula
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 MX2010006471A publication Critical patent/MX2010006471A/es

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Data Mining & Analysis (AREA)
  • Computational Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • Computational Linguistics (AREA)
  • Algebra (AREA)
  • Discrete Mathematics (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Complex Calculations (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

Se proporciona un codificador/descodificador más eficiente en el cual se mapea una transformada MDCT de N puntos en transformadas DCT-IV, DST-IV y/o DCT-II de N/2 puntos de menor tamaño. La MDCT puede diezmarse sistemáticamente por factor de 2 al utilizar una función central DCT-II de cinco puntos escalada de manera uniforme en comparación con DCT-IV o núcleos de FFT utilizados en muchos diseños existentes de MDCT en códecs de audio. Varias factorizaciones de transformadas de las transformadas de 5 puntos, pueden implementarse para implementar de manera más eficiente una transformada.
MX2010006471A 2007-12-13 2008-12-13 Algoritmos rapidos para calculo de dct-ii de 5 puntos, dct-iv y dst iv y arquitecturas. MX2010006471A (es)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US1357907P 2007-12-13 2007-12-13
US1610607P 2007-12-21 2007-12-21
US3919408P 2008-03-25 2008-03-25
US12/334,238 US8631060B2 (en) 2007-12-13 2008-12-12 Fast algorithms for computation of 5-point DCT-II, DCT-IV, and DST-IV, and architectures
PCT/US2008/086739 WO2009076666A1 (en) 2007-12-13 2008-12-13 Fast algorithms for computation of 5-point dct-ii, dct-iv, and dst-iv, and architectures

Publications (1)

Publication Number Publication Date
MX2010006471A true MX2010006471A (es) 2010-09-28

Family

ID=40754681

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2010006471A MX2010006471A (es) 2007-12-13 2008-12-13 Algoritmos rapidos para calculo de dct-ii de 5 puntos, dct-iv y dst iv y arquitecturas.

Country Status (12)

Country Link
US (1) US8631060B2 (es)
EP (1) EP2225755A1 (es)
JP (1) JP5269908B2 (es)
KR (1) KR101226094B1 (es)
CN (1) CN101896966B (es)
AU (1) AU2008334935A1 (es)
BR (1) BRPI0820703A2 (es)
CA (1) CA2706283A1 (es)
IL (1) IL205835A0 (es)
MX (1) MX2010006471A (es)
TW (1) TWI405185B (es)
WO (1) WO2009076666A1 (es)

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US9069713B2 (en) * 2009-06-05 2015-06-30 Qualcomm Incorporated 4X4 transform for media coding
US8762441B2 (en) * 2009-06-05 2014-06-24 Qualcomm Incorporated 4X4 transform for media coding
US8451904B2 (en) 2009-06-24 2013-05-28 Qualcomm Incorporated 8-point transform for media data coding
US9081733B2 (en) * 2009-06-24 2015-07-14 Qualcomm Incorporated 16-point transform for media data 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
PL2491553T3 (pl) 2009-10-20 2017-05-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Koder audio, dekoder audio, sposób kodowania informacji audio, sposób dekodowania informacji audio i program komputerowy wykorzystujący iteracyjne zmniejszania rozmiaru przedziału
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
RU2628162C2 (ru) 2010-01-12 2017-08-15 Фраунхофер-Гезелльшафт цур Фёрдерунг дер ангевандтен Форшунг Е.Ф., Аудио кодер, аудио декодер, способ кодирования и декодирования аудио информации и компьютерная программа, определяющая значение поддиапазона контекста на основе нормы ранее декодированных спектральных значений
CN101894557B (zh) * 2010-06-12 2011-12-07 北京航空航天大学 一种用于aac编码的窗型判别方法
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US9824066B2 (en) * 2011-01-10 2017-11-21 Qualcomm Incorporated 32-point transform for media data coding
KR101362696B1 (ko) * 2011-10-19 2014-02-17 전북대학교산학협력단 하이브리드 아키텍쳐가 적용된 신호 변환 장치, 신호 변환 방법 및 기록매체
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
TWI443527B (zh) * 2012-01-02 2014-07-01 Univ Nat Cheng Kung 遞迴式第四型離散餘弦之系統
CN103257953B (zh) * 2013-05-06 2016-04-13 福州瑞芯微电子股份有限公司 Imdct36运算模块及方法
WO2015172337A1 (en) 2014-05-14 2015-11-19 Mediatek Singapore Pte. Ltd. Alternative transforms for data compression
MY190919A (en) 2014-11-28 2022-05-19 Mediatek Inc Method and apparatus of alternative transform for video coding
EP3457699B1 (en) * 2016-05-13 2023-09-20 Sony Group Corporation Image processing device and method
JP6833009B2 (ja) * 2016-07-14 2021-02-24 フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン 変換ベースの残差符号化を使用する予測ピクチャ符号化
US10536720B2 (en) * 2018-05-07 2020-01-14 Tencent America LLC Method, apparatus and medium for decoding or encoding
CN111294782B (zh) * 2020-02-25 2022-02-08 北京百瑞互联技术有限公司 一种加速编解码专用集成电路及方法
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Also Published As

Publication number Publication date
AU2008334935A1 (en) 2009-06-18
CN101896966A (zh) 2010-11-24
CA2706283A1 (en) 2009-06-18
JP5269908B2 (ja) 2013-08-21
CN101896966B (zh) 2012-11-21
JP2011507037A (ja) 2011-03-03
US8631060B2 (en) 2014-01-14
IL205835A0 (en) 2010-11-30
WO2009076666A1 (en) 2009-06-18
TWI405185B (zh) 2013-08-11
KR20100103580A (ko) 2010-09-27
EP2225755A1 (en) 2010-09-08
US20090157785A1 (en) 2009-06-18
TW200947419A (en) 2009-11-16
KR101226094B1 (ko) 2013-01-24
BRPI0820703A2 (pt) 2015-06-16

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