WO2010134759A3 - Mdct-tcx 프레임과 celp 프레임 간 연동을 위한 윈도우 처리 장치 및 윈도우 처리 방법 - Google Patents

Mdct-tcx 프레임과 celp 프레임 간 연동을 위한 윈도우 처리 장치 및 윈도우 처리 방법 Download PDF

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Publication number
WO2010134759A3
WO2010134759A3 PCT/KR2010/003171 KR2010003171W WO2010134759A3 WO 2010134759 A3 WO2010134759 A3 WO 2010134759A3 KR 2010003171 W KR2010003171 W KR 2010003171W WO 2010134759 A3 WO2010134759 A3 WO 2010134759A3
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WO
WIPO (PCT)
Prior art keywords
frame
coding mode
mdct
interworking
processing method
Prior art date
Application number
PCT/KR2010/003171
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English (en)
French (fr)
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WO2010134759A2 (ko
Inventor
백승권
이태진
김민제
강경옥
장대영
서정일
김진웅
홍진우
박호종
박영철
Original Assignee
한국전자통신연구원
광운대학교 산학협력단
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.)
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Publication date
Application filed by 한국전자통신연구원, 광운대학교 산학협력단 filed Critical 한국전자통신연구원
Publication of WO2010134759A2 publication Critical patent/WO2010134759A2/ko
Publication of WO2010134759A3 publication Critical patent/WO2010134759A3/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
    • G10L19/04—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 predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
    • 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
    • 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
    • G10L19/04—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 predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders

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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 Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

MDCT-TCX 프레임과 CELP 프레임 간 연동을 위한 윈도우 처리 장치 및 방법이 개시된다. 윈도우 처리 장치는 현재 서브 프레임에 대해 이전 서브 프레임의 코딩 모드 및 이후 서브 프레임의 코딩 모드를 판단하는 코딩 모드 판단부 및 상기 이전 서브 프레임의 코딩 모드 및 상기 이후 서브 프레임의 코딩 모드에 따라 결정된 윈도우를 상기 현재 서브 프레임에 적용하는 윈도우 적용부를 포함할 수 있다.
PCT/KR2010/003171 2009-05-19 2010-05-19 Mdct-tcx 프레임과 celp 프레임 간 연동을 위한 윈도우 처리 장치 및 윈도우 처리 방법 WO2010134759A2 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20090043519 2009-05-19
KR10-2009-0043519 2009-05-19

Publications (2)

Publication Number Publication Date
WO2010134759A2 WO2010134759A2 (ko) 2010-11-25
WO2010134759A3 true WO2010134759A3 (ko) 2011-03-03

Family

ID=43126653

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2010/003171 WO2010134759A2 (ko) 2009-05-19 2010-05-19 Mdct-tcx 프레임과 celp 프레임 간 연동을 위한 윈도우 처리 장치 및 윈도우 처리 방법

Country Status (2)

Country Link
KR (1) KR101297026B1 (ko)
WO (1) WO2010134759A2 (ko)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060131732A (ko) * 2003-09-29 2006-12-20 소니 일렉트로닉스 인코포레이티드 오디오 인코딩에서 짧은 윈도우를 그룹화하는 방법

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2365203A1 (en) 2001-12-14 2003-06-14 Voiceage Corporation A signal modification method for efficient coding of speech signals
GB0408856D0 (en) * 2004-04-21 2004-05-26 Nokia Corp Signal encoding
US7987089B2 (en) * 2006-07-31 2011-07-26 Qualcomm Incorporated Systems and methods for modifying a zero pad region of a windowed frame of an audio signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060131732A (ko) * 2003-09-29 2006-12-20 소니 일렉트로닉스 인코포레이티드 오디오 인코딩에서 짧은 윈도우를 그룹화하는 방법

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
BESSETTE B. ET AL: "Universal speech/audio coding using hybrid ACELP/TCX techniques", PROC. ICASSP, vol. 3, March 2005 (2005-03-01), pages 301 - 304, XP055022141, DOI: doi:10.1109/ICASSP.2005.1415706 *
LECOMTE J. ET AL: "Efficient cross-fade windows for transitions between LPC-based and non-LPC based audio coding", AUDIO ENGINEERING SOCIETY THE 126TH CONVENTION, 7 May 2009 (2009-05-07) *
NEUENDORF M. ET AL: "Universal Speech and Audio Coding Scheme for High Quality at Low Bitrates", PROC. ICASSP, 19 April 2009 (2009-04-19), pages 1 - 4 *

Also Published As

Publication number Publication date
KR20100124675A (ko) 2010-11-29
WO2010134759A2 (ko) 2010-11-25
KR101297026B1 (ko) 2013-08-14

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