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WO2009096715A3 - 오디오 신호의 부호화, 복호화 방법 및 장치 - Google Patents

오디오 신호의 부호화, 복호화 방법 및 장치 Download PDF

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Publication number
WO2009096715A3
WO2009096715A3 PCT/KR2009/000433 KR2009000433W WO2009096715A3 WO 2009096715 A3 WO2009096715 A3 WO 2009096715A3 KR 2009000433 W KR2009000433 W KR 2009000433W WO 2009096715 A3 WO2009096715 A3 WO 2009096715A3
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WO
WIPO (PCT)
Prior art keywords
coding
audio signal
sinusoidal
decoding
signals
Prior art date
Application number
PCT/KR2009/000433
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English (en)
French (fr)
Other versions
WO2009096715A2 (ko
Inventor
이건형
이철우
정종훈
이남숙
문한길
Original Assignee
삼성전자 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.)
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Publication date
Application filed by 삼성전자 주식회사 filed Critical 삼성전자 주식회사
Publication of WO2009096715A2 publication Critical patent/WO2009096715A2/ko
Publication of WO2009096715A3 publication Critical patent/WO2009096715A3/ko

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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
    • G10L19/04—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
    • 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
    • G10L19/0204—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 subband decomposition
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • 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
    • 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
    • G10L19/093—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters using sinusoidal excitation models

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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

입력 오디오 신호에서 정현파 성분을 제외한 나머지 성분의 신호를 효율적으로 부호화하거나 복호화하는 방법 및 장치가 개시된다. 본 발명에 따른 오디오 신호의 부호화 방법 및 장치는 소정 임계 주파수 이하의 저주파수 신호에 대한 정현파 분석을 수행하여 정현파 신호들을 추출한 다음 입력 오디오 신호에서 정현파 신호를 제외한 나머지 차신호에 대하여 선형 예측 코딩 분석을 이용한 부호화를 수행하는 것을 특징으로 한다.
PCT/KR2009/000433 2008-01-29 2009-01-29 오디오 신호의 부호화, 복호화 방법 및 장치 WO2009096715A2 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2008-0009007 2008-01-29
KR1020080009007A KR101413967B1 (ko) 2008-01-29 2008-01-29 오디오 신호의 부호화 방법 및 복호화 방법, 및 그에 대한 기록 매체, 오디오 신호의 부호화 장치 및 복호화 장치

Publications (2)

Publication Number Publication Date
WO2009096715A2 WO2009096715A2 (ko) 2009-08-06
WO2009096715A3 true WO2009096715A3 (ko) 2009-09-24

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Country Status (3)

Country Link
US (1) US20090192789A1 (ko)
KR (1) KR101413967B1 (ko)
WO (1) WO2009096715A2 (ko)

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EP2481048B1 (en) * 2009-09-25 2017-10-25 Nokia Technologies Oy Audio coding
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EP4451267B1 (en) 2009-10-21 2025-04-23 Dolby International AB Oversampling in a combined transposer filter bank
WO2012144128A1 (ja) * 2011-04-20 2012-10-26 パナソニック株式会社 音声音響符号化装置、音声音響復号装置、およびこれらの方法
US8941955B2 (en) * 2011-06-29 2015-01-27 Hamilton Sundstrand Corporation Overvoltage prevention in an aircraft electrical power generation system
CN103581603B (zh) * 2012-07-24 2017-06-27 联想(北京)有限公司 一种多媒体数据的传输方法及电子设备
EP2989559A2 (en) 2013-04-22 2016-03-02 Bacula Systems SA Creating a universally deduplicatable archive volume
CN107818789B (zh) * 2013-07-16 2020-11-17 华为技术有限公司 解码方法和解码装置
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CN108172239B (zh) * 2013-09-26 2021-01-12 华为技术有限公司 频带扩展的方法及装置
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WO2016142002A1 (en) 2015-03-09 2016-09-15 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Audio encoder, audio decoder, method for encoding an audio signal and method for decoding an encoded audio signal

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Also Published As

Publication number Publication date
WO2009096715A2 (ko) 2009-08-06
KR20090083068A (ko) 2009-08-03
US20090192789A1 (en) 2009-07-30
KR101413967B1 (ko) 2014-07-01

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