HK1091309A1 - Improved coding techniques using estimated spectral magnitude and phase derived from mdct coefficients - Google Patents

Improved coding techniques using estimated spectral magnitude and phase derived from mdct coefficients

Info

Publication number
HK1091309A1
HK1091309A1 HK06111862.6A HK06111862A HK1091309A1 HK 1091309 A1 HK1091309 A1 HK 1091309A1 HK 06111862 A HK06111862 A HK 06111862A HK 1091309 A1 HK1091309 A1 HK 1091309A1
Authority
HK
Hong Kong
Prior art keywords
spectral magnitude
coding techniques
mdct coefficients
improved coding
estimated spectral
Prior art date
Application number
HK06111862.6A
Other languages
English (en)
Inventor
Corey I Cheng
Michael J Smithers
David N Lathrop
Original Assignee
Dolby Lab Licensing Corp
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 Dolby Lab Licensing Corp filed Critical Dolby Lab Licensing Corp
Publication of HK1091309A1 publication Critical patent/HK1091309A1/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
    • 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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Data Mining & Analysis (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Databases & Information Systems (AREA)
  • Discrete Mathematics (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Algebra (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Optical Communication System (AREA)
  • Complex Calculations (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
HK06111862.6A 2004-01-27 2006-10-27 Improved coding techniques using estimated spectral magnitude and phase derived from mdct coefficients HK1091309A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/766,681 US6980933B2 (en) 2004-01-27 2004-01-27 Coding techniques using estimated spectral magnitude and phase derived from MDCT coefficients
PCT/US2005/001499 WO2005073960A1 (en) 2004-01-27 2005-01-14 Improved coding techniques using estimated spectral magnitude and phase derived from mdct coefficients

Publications (1)

Publication Number Publication Date
HK1091309A1 true HK1091309A1 (en) 2007-01-12

Family

ID=34795716

Family Applications (1)

Application Number Title Priority Date Filing Date
HK06111862.6A HK1091309A1 (en) 2004-01-27 2006-10-27 Improved coding techniques using estimated spectral magnitude and phase derived from mdct coefficients

Country Status (15)

Country Link
US (6) US6980933B2 (xx)
EP (1) EP1709627B1 (xx)
JP (1) JP4787176B2 (xx)
KR (1) KR101184992B1 (xx)
CN (1) CN1918633B (xx)
AT (1) ATE532174T1 (xx)
AU (1) AU2005208287B2 (xx)
CA (1) CA2553784C (xx)
DK (1) DK1709627T3 (xx)
ES (1) ES2375285T3 (xx)
HK (1) HK1091309A1 (xx)
IL (1) IL176477A (xx)
PL (1) PL1709627T3 (xx)
TW (1) TWI374612B (xx)
WO (1) WO2005073960A1 (xx)

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US8214200B2 (en) * 2007-03-14 2012-07-03 Xfrm, Inc. Fast MDCT (modified discrete cosine transform) approximation of a windowed sinusoid
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CN101552006B (zh) * 2009-05-12 2011-12-28 武汉大学 加窗信号mdct域的能量及相位调整方法及其装置
CN102460574A (zh) * 2009-05-19 2012-05-16 韩国电子通信研究院 用于使用层级正弦脉冲编码对音频信号进行编码和解码的方法和设备
CN101958119B (zh) * 2009-07-16 2012-02-29 中兴通讯股份有限公司 一种改进的离散余弦变换域音频丢帧补偿器和补偿方法
KR101410312B1 (ko) * 2009-07-27 2014-06-27 연세대학교 산학협력단 오디오 신호 처리 방법 및 장치
US8538042B2 (en) 2009-08-11 2013-09-17 Dts Llc System for increasing perceived loudness of speakers
EP3723090B1 (en) 2009-10-21 2021-12-15 Dolby International AB Oversampling in a combined transposer filter bank
EP2372703A1 (en) * 2010-03-11 2011-10-05 Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. Signal processor, window provider, encoded media signal, method for processing a signal and method for providing a window
EP2375409A1 (en) 2010-04-09 2011-10-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoder, audio decoder and related methods for processing multi-channel audio signals using complex prediction
RU2683175C2 (ru) 2010-04-09 2019-03-26 Долби Интернешнл Аб Стереофоническое кодирование на основе mdct с комплексным предсказанием
PL3779979T3 (pl) 2010-04-13 2024-01-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Sposób dekodowania audio do przetwarzania sygnałów audio stereo z wykorzystaniem zmiennego kierunku predykcji
EP2702589B1 (en) * 2011-04-28 2017-04-05 Dolby International AB Efficient content classification and loudness estimation
TWI575962B (zh) 2012-02-24 2017-03-21 杜比國際公司 部份複數處理之重疊濾波器組中的低延遲實數至複數轉換
US9312829B2 (en) 2012-04-12 2016-04-12 Dts Llc System for adjusting loudness of audio signals in real time
KR101498113B1 (ko) * 2013-10-23 2015-03-04 광주과학기술원 사운드 신호의 대역폭 확장 장치 및 방법
EP2963649A1 (en) * 2014-07-01 2016-01-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio processor and method for processing an audio signal using horizontal phase correction
EP3067889A1 (en) 2015-03-09 2016-09-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and apparatus for signal-adaptive transform kernel switching in audio coding

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Also Published As

Publication number Publication date
ATE532174T1 (de) 2011-11-15
USRE46684E1 (en) 2018-01-23
KR101184992B1 (ko) 2012-10-02
AU2005208287A1 (en) 2005-08-11
USRE48271E1 (en) 2020-10-20
IL176477A0 (en) 2006-10-05
JP2007524300A (ja) 2007-08-23
PL1709627T3 (pl) 2012-03-30
US6980933B2 (en) 2005-12-27
US20050165587A1 (en) 2005-07-28
TW200525899A (en) 2005-08-01
TWI374612B (en) 2012-10-11
CA2553784A1 (en) 2005-08-11
WO2005073960A1 (en) 2005-08-11
KR20060131797A (ko) 2006-12-20
DK1709627T3 (da) 2012-02-13
CA2553784C (en) 2013-07-30
CN1918633B (zh) 2011-01-05
EP1709627B1 (en) 2011-11-02
EP1709627A1 (en) 2006-10-11
JP4787176B2 (ja) 2011-10-05
USRE48210E1 (en) 2020-09-15
ES2375285T3 (es) 2012-02-28
USRE42935E1 (en) 2011-11-15
USRE44126E1 (en) 2013-04-02
CN1918633A (zh) 2007-02-21
AU2005208287B2 (en) 2010-02-18
IL176477A (en) 2010-04-15

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