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WO2008108083A1 - 音声符号化装置および音声符号化方法 - Google Patents

音声符号化装置および音声符号化方法 Download PDF

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Publication number
WO2008108083A1
WO2008108083A1 PCT/JP2008/000407 JP2008000407W WO2008108083A1 WO 2008108083 A1 WO2008108083 A1 WO 2008108083A1 JP 2008000407 W JP2008000407 W JP 2008000407W WO 2008108083 A1 WO2008108083 A1 WO 2008108083A1
Authority
WO
WIPO (PCT)
Prior art keywords
pitch pulse
pulse
pitch
point
unit
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2008/000407
Other languages
English (en)
French (fr)
Inventor
Hiroyuki Ehara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
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 Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to US12/528,880 priority Critical patent/US8364472B2/en
Priority to JP2009502461A priority patent/JP5596341B2/ja
Priority to EP08710510A priority patent/EP2128855A1/en
Publication of WO2008108083A1 publication Critical patent/WO2008108083A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • 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
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0011—Long term prediction filters, i.e. pitch estimation

Landscapes

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

Abstract

　ピッチパルス情報を消失補償処理用の冗長情報として用いる場合に、最適なピッチパルスを検出することができる音声符号化装置。この装置において、探索始点決定部（１２１）は、ピッチパルスが存在し得る複数の点の中で最も過去にある点を探索始点として決定し、ピッチパルス候補選択部（１２２）は、探索始点から現フレームの先頭の点の１つ前の点までを探索範囲とし、この探索範囲において振幅が大きい復号音源ベクトルの位置をピッチパルス位置候補として選択し、切替スイッチ（１２５）は、ピッチパルス候補選択部（１２２）から入力される複数のピッチパルス位置候補を順次切り替えてパルス列生成部（１２３）および誤差最小化部（１２４）に出力し、パルス列生成部（１２３）は、切替スイッチ（１２５）から入力されたピッチパルス位置候補にピッチパルスを立てた場合に、現フレームでこのピッチパルスから適応符号帳成分として生成されるベクトルをパルス列として生成する。
PCT/JP2008/000407 2007-03-02 2008-02-29 音声符号化装置および音声符号化方法 Ceased WO2008108083A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/528,880 US8364472B2 (en) 2007-03-02 2008-02-29 Voice encoding device and voice encoding method
JP2009502461A JP5596341B2 (ja) 2007-03-02 2008-02-29 音声符号化装置および音声符号化方法
EP08710510A EP2128855A1 (en) 2007-03-02 2008-02-29 Voice encoding device and voice encoding method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007053530 2007-03-02
JP2007-053530 2007-03-02

Publications (1)

Publication Number Publication Date
WO2008108083A1 true WO2008108083A1 (ja) 2008-09-12

Family

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PCT/JP2008/000407 Ceased WO2008108083A1 (ja) 2007-03-02 2008-02-29 音声符号化装置および音声符号化方法

Country Status (4)

Country Link
US (1) US8364472B2 (ja)
EP (1) EP2128855A1 (ja)
JP (1) JP5596341B2 (ja)
WO (1) WO2008108083A1 (ja)

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US8725501B2 (en) * 2004-07-20 2014-05-13 Panasonic Corporation Audio decoding device and compensation frame generation method
US9082416B2 (en) * 2010-09-16 2015-07-14 Qualcomm Incorporated Estimating a pitch lag
EP2676266B1 (en) 2011-02-14 2015-03-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Linear prediction based coding scheme using spectral domain noise shaping
KR101551046B1 (ko) * 2011-02-14 2015-09-07 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 저-지연 통합 스피치 및 오디오 코딩에서 에러 은닉을 위한 장치 및 방법
CA2799343C (en) 2011-02-14 2016-06-21 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Information signal representation using lapped transform
TWI469136B (zh) 2011-02-14 2015-01-11 Fraunhofer Ges Forschung 在一頻譜域中用以處理已解碼音訊信號之裝置及方法
RU2586597C2 (ru) 2011-02-14 2016-06-10 Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф. Кодирование и декодирование позиций импульсов дорожек аудиосигнала
CN103493129B (zh) 2011-02-14 2016-08-10 弗劳恩霍夫应用研究促进协会 用于使用瞬态检测及质量结果将音频信号的部分编码的装置与方法
US9275644B2 (en) * 2012-01-20 2016-03-01 Qualcomm Incorporated Devices for redundant frame coding and decoding
CN104751849B (zh) * 2013-12-31 2017-04-19 华为技术有限公司 语音频码流的解码方法及装置
CN107369454B (zh) 2014-03-21 2020-10-27 华为技术有限公司 语音频码流的解码方法及装置

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Also Published As

Publication number Publication date
JPWO2008108083A1 (ja) 2010-06-10
US20100106488A1 (en) 2010-04-29
JP5596341B2 (ja) 2014-09-24
US8364472B2 (en) 2013-01-29
EP2128855A1 (en) 2009-12-02

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