JP4787176B2 - Ｍｄｃｔ係数から導かれた推定スペクトル強度と位相を使用する改良型コーディングテクニック - Google Patents

Ｍｄｃｔ係数から導かれた推定スペクトル強度と位相を使用する改良型コーディングテクニック Download PDF

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JP4787176B2
JP4787176B2 JP2006551194A JP2006551194A JP4787176B2 JP 4787176 B2 JP4787176 B2 JP 4787176B2 JP 2006551194 A JP2006551194 A JP 2006551194A JP 2006551194 A JP2006551194 A JP 2006551194A JP 4787176 B2 JP4787176 B2 JP 4787176B2
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spectral
spectral component
source signal
equation
component
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チェン、コリー・アイ
スミザーズ、マイケル・ジェイ
ラスロップ、デイビッド・エヌ
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Dolby Laboratories Licensing Corp
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    • 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 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
    • 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

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  • Pure & Applied Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Acoustics & Sound (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Multimedia (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Discrete Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Algebra (AREA)
  • Software Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Optical Communication System (AREA)
  • Complex Calculations (AREA)
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JP2006551194A 2004-01-27 2005-01-14 Ｍｄｃｔ係数から導かれた推定スペクトル強度と位相を使用する改良型コーディングテクニック Expired - Lifetime JP4787176B2 (ja)

Applications Claiming Priority (3)

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
US10/766,681 2004-01-27
PCT/US2005/001499 WO2005073960A1 (en) 2004-01-27 2005-01-14 Improved coding techniques using estimated spectral magnitude and phase derived from mdct coefficients

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JP2007524300A JP2007524300A (ja) 2007-08-23
JP2007524300A5 JP2007524300A5 (https=) 2008-03-06
JP4787176B2 true JP4787176B2 (ja) 2011-10-05

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

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KR101428487B1 (ko) * 2008-07-11 2014-08-08 삼성전자주식회사 멀티 채널 부호화 및 복호화 방법 및 장치
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
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ES3051141T3 (en) 2009-10-21 2025-12-26 Dolby Int Ab Oversampling in a combined transposer filter bank
EP2372704A1 (en) * 2010-03-11 2011-10-05 Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. Signal processor and method for processing a signal
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
KR101698439B1 (ko) * 2010-04-09 2017-01-20 돌비 인터네셔널 에이비 Mdct-기반의 복소수 예측 스테레오 코딩
ES2911893T3 (es) 2010-04-13 2022-05-23 Fraunhofer Ges Forschung Codificador de audio, decodificador de audio y métodos relacionados para procesar señales de audio estéreo usando una dirección de predicción variable
US9135929B2 (en) * 2011-04-28 2015-09-15 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
EP2963646A1 (en) 2014-07-01 2016-01-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Decoder and method for decoding an audio signal, encoder and method for encoding an audio signal
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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Publication number Publication date
USRE46684E1 (en) 2018-01-23
US6980933B2 (en) 2005-12-27
CN1918633B (zh) 2011-01-05
EP1709627B1 (en) 2011-11-02
AU2005208287B2 (en) 2010-02-18
USRE48210E1 (en) 2020-09-15
AU2005208287A1 (en) 2005-08-11
IL176477A (en) 2010-04-15
DK1709627T3 (da) 2012-02-13
ATE532174T1 (de) 2011-11-15
CA2553784A1 (en) 2005-08-11
US20050165587A1 (en) 2005-07-28
JP2007524300A (ja) 2007-08-23
ES2375285T3 (es) 2012-02-28
EP1709627A1 (en) 2006-10-11
HK1091309A1 (en) 2007-01-12
KR20060131797A (ko) 2006-12-20
USRE42935E1 (en) 2011-11-15
IL176477A0 (en) 2006-10-05
USRE44126E1 (en) 2013-04-02
USRE48271E1 (en) 2020-10-20
WO2005073960A1 (en) 2005-08-11
CN1918633A (zh) 2007-02-21
TW200525899A (en) 2005-08-01
TWI374612B (en) 2012-10-11
PL1709627T3 (pl) 2012-03-30
KR101184992B1 (ko) 2012-10-02
CA2553784C (en) 2013-07-30

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