KR101184992B1 - 변경된 이산 코사인 변환 계수로부터 유도되는 추정된스펙트럼의 크기와 위상을 이용하는 개선된 코딩 기술 - Google Patents

변경된 이산 코사인 변환 계수로부터 유도되는 추정된스펙트럼의 크기와 위상을 이용하는 개선된 코딩 기술 Download PDF

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KR101184992B1
KR101184992B1 KR1020067013738A KR20067013738A KR101184992B1 KR 101184992 B1 KR101184992 B1 KR 101184992B1 KR 1020067013738 A KR1020067013738 A KR 1020067013738A KR 20067013738 A KR20067013738 A KR 20067013738A KR 101184992 B1 KR101184992 B1 KR 101184992B1
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KR20060131797A (ko
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코레이 아이. 쳉
마이클 제이 스미더스
데이비드 엔. 라스로프
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돌비 레버러토리즈 라이쎈싱 코오포레이션
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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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  • 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)
  • Optical Communication System (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Complex Calculations (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
KR1020067013738A 2004-01-27 2005-01-14 변경된 이산 코사인 변환 계수로부터 유도되는 추정된스펙트럼의 크기와 위상을 이용하는 개선된 코딩 기술 Expired - Lifetime KR101184992B1 (ko)

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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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KR20060131797A KR20060131797A (ko) 2006-12-20
KR101184992B1 true KR101184992B1 (ko) 2012-10-02

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EP (1) EP1709627B1 (https=)
JP (1) JP4787176B2 (https=)
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CN (1) CN1918633B (https=)
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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
EP2232700B1 (en) 2007-12-21 2014-08-13 Dts Llc System for adjusting perceived loudness of audio signals
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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
KR101924192B1 (ko) * 2009-05-19 2018-11-30 한국전자통신연구원 계층형 정현파 코딩을 이용한 오디오 신호의 인코딩 및 디코딩 방법 및 장치
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
JP5547810B2 (ja) 2009-07-27 2014-07-16 インダストリー−アカデミック コーペレイション ファウンデイション， ヨンセイ ユニバーシティ オーディオ信号を処理する方法及び装置
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HUE071544T2 (hu) * 2009-10-21 2025-09-28 Dolby Int Ab Túlmintavételezés kombinált transzponáló szûrõbankban
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
CA2992917C (en) * 2010-04-09 2020-05-26 Dolby International Ab Mdct-based complex prediction stereo coding
JP5820464B2 (ja) 2010-04-13 2015-11-24 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 オーディオまたはビデオエンコーダ、オーディオまたはビデオデコーダ、及び予測方向可変の予測を使用したマルチチャンネルオーディオまたはビデオ信号処理方法
JP6185457B2 (ja) * 2011-04-28 2017-08-23 ドルビー・インターナショナル・アーベー 効率的なコンテンツ分類及びラウドネス推定
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
EP2963648A1 (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 vertical 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
US20250087230A1 (en) * 2023-09-13 2025-03-13 Microsoft Technology Licensing, Llc System and Method for Speech Enhancement in Multichannel Audio Processing Systems

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WO2005073960A1 (en) 2005-08-11
US20050165587A1 (en) 2005-07-28
CA2553784C (en) 2013-07-30
CN1918633A (zh) 2007-02-21
ES2375285T3 (es) 2012-02-28
USRE48210E1 (en) 2020-09-15
KR20060131797A (ko) 2006-12-20
TW200525899A (en) 2005-08-01
TWI374612B (en) 2012-10-11
USRE46684E1 (en) 2018-01-23
EP1709627A1 (en) 2006-10-11
EP1709627B1 (en) 2011-11-02
ATE532174T1 (de) 2011-11-15
CA2553784A1 (en) 2005-08-11
US6980933B2 (en) 2005-12-27
PL1709627T3 (pl) 2012-03-30
JP2007524300A (ja) 2007-08-23
HK1091309A1 (en) 2007-01-12
USRE48271E1 (en) 2020-10-20
AU2005208287B2 (en) 2010-02-18
USRE42935E1 (en) 2011-11-15
JP4787176B2 (ja) 2011-10-05
AU2005208287A1 (en) 2005-08-11
DK1709627T3 (da) 2012-02-13
IL176477A0 (en) 2006-10-05
USRE44126E1 (en) 2013-04-02
CN1918633B (zh) 2011-01-05
IL176477A (en) 2010-04-15

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