WO2012070866A3 - 스피치 시그널 부호화 방법 및 복호화 방법 - Google Patents

스피치 시그널 부호화 방법 및 복호화 방법 Download PDF

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Publication number
WO2012070866A3
WO2012070866A3 PCT/KR2011/008981 KR2011008981W WO2012070866A3 WO 2012070866 A3 WO2012070866 A3 WO 2012070866A3 KR 2011008981 W KR2011008981 W KR 2011008981W WO 2012070866 A3 WO2012070866 A3 WO 2012070866A3
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WO
WIPO (PCT)
Prior art keywords
speech signal
analysis frame
encoding method
signal encoding
modified input
Prior art date
Application number
PCT/KR2011/008981
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English (en)
French (fr)
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WO2012070866A2 (ko
Inventor
정규혁
임종하
전혜정
강인규
김락용
Original Assignee
엘지전자 주식회사
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 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020137013582A priority Critical patent/KR101418227B1/ko
Priority to EP11842721.0A priority patent/EP2645365B1/en
Priority to CN201180056646.6A priority patent/CN103229235B/zh
Priority to US13/989,196 priority patent/US9177562B2/en
Publication of WO2012070866A2 publication Critical patent/WO2012070866A2/ko
Publication of WO2012070866A3 publication Critical patent/WO2012070866A3/ko

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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
    • 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
    • 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
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

본 발명은 스피치 시그널의 부호화 방법 및 복호화 방법에 관한 것으로서, 본 발명에 따른 스피치 시그널의 부호화 방법은 입력 시그널 중 분석 프레임을 특정하는 단계, 상기 분석 프레임을 기반으로 변형 입력을 생성하는 단계, 상기 변형 입력에 윈도우를 적용하는 단계, 윈도우가 적용된 변형 입력을 MDCT(Modified Discrete Cosine Transform) 하여 변환 계수를 생성하는 단계 및 상기 변환 계수를 부호화하는 단계를 포함하며, 상기 변형 입력은 상기 분석 프레임 및 상기 분석 프레임 또는 상기 분석 프레임 중 일부의 자기 복제를 포함할 수 있다.
PCT/KR2011/008981 2010-11-24 2011-11-23 스피치 시그널 부호화 방법 및 복호화 방법 WO2012070866A2 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020137013582A KR101418227B1 (ko) 2010-11-24 2011-11-23 스피치 시그널 부호화 방법 및 복호화 방법
EP11842721.0A EP2645365B1 (en) 2010-11-24 2011-11-23 Speech signal encoding method and speech signal decoding method
CN201180056646.6A CN103229235B (zh) 2010-11-24 2011-11-23 语音信号编码方法和语音信号解码方法
US13/989,196 US9177562B2 (en) 2010-11-24 2011-11-23 Speech signal encoding method and speech signal decoding method

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US41721410P 2010-11-24 2010-11-24
US61/417,214 2010-11-24
US201161531582P 2011-09-06 2011-09-06
US61/531,582 2011-09-06

Publications (2)

Publication Number Publication Date
WO2012070866A2 WO2012070866A2 (ko) 2012-05-31
WO2012070866A3 true WO2012070866A3 (ko) 2012-09-27

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PCT/KR2011/008981 WO2012070866A2 (ko) 2010-11-24 2011-11-23 스피치 시그널 부호화 방법 및 복호화 방법

Country Status (5)

Country Link
US (1) US9177562B2 (ko)
EP (1) EP2645365B1 (ko)
KR (1) KR101418227B1 (ko)
CN (1) CN103229235B (ko)
WO (1) WO2012070866A2 (ko)

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IL294836A (en) 2013-04-05 2022-09-01 Dolby Int Ab Audio encoder and decoder
US10424305B2 (en) * 2014-12-09 2019-09-24 Dolby International Ab MDCT-domain error concealment
EP3483879A1 (en) * 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Analysis/synthesis windowing function for modulated lapped transformation
WO2020050665A1 (ko) * 2018-09-05 2020-03-12 엘지전자 주식회사 비디오 신호의 부호화/복호화 방법 및 이를 위한 장치
US20220232255A1 (en) * 2019-05-30 2022-07-21 Sharp Kabushiki Kaisha Image decoding apparatus
CN114007176B (zh) * 2020-10-09 2023-12-19 上海又为智能科技有限公司 用于降低信号延时的音频信号处理方法、装置及存储介质

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Also Published As

Publication number Publication date
EP2645365A4 (en) 2015-01-07
WO2012070866A2 (ko) 2012-05-31
EP2645365B1 (en) 2018-01-17
US20130246054A1 (en) 2013-09-19
EP2645365A2 (en) 2013-10-02
KR20130086619A (ko) 2013-08-02
CN103229235A (zh) 2013-07-31
US9177562B2 (en) 2015-11-03
CN103229235B (zh) 2015-12-09
KR101418227B1 (ko) 2014-07-09

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