JPH0830299A - 音声符号化装置 - Google Patents

音声符号化装置

Info

Publication number
JPH0830299A
JPH0830299A JP6187903A JP18790394A JPH0830299A JP H0830299 A JPH0830299 A JP H0830299A JP 6187903 A JP6187903 A JP 6187903A JP 18790394 A JP18790394 A JP 18790394A JP H0830299 A JPH0830299 A JP H0830299A
Authority
JP
Japan
Prior art keywords
code
delay
delay code
closed loop
circuit
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.)
Pending
Application number
JP6187903A
Other languages
English (en)
Japanese (ja)
Inventor
Keiichi Funaki
慶一 舟木
Kazunori Ozawa
一範 小澤
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP6187903A priority Critical patent/JPH0830299A/ja
Priority to EP95111278A priority patent/EP0694907A3/de
Priority to CA002154192A priority patent/CA2154192A1/en
Publication of JPH0830299A publication Critical patent/JPH0830299A/ja
Pending legal-status Critical Current

Links

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
    • G10L19/08—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
    • G10L2019/0001—Codebooks
    • G10L2019/0003—Backward prediction of gain
    • 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
    • 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
    • G10L2019/0013—Codebook search algorithms

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)
JP6187903A 1994-07-19 1994-07-19 音声符号化装置 Pending JPH0830299A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP6187903A JPH0830299A (ja) 1994-07-19 1994-07-19 音声符号化装置
EP95111278A EP0694907A3 (de) 1994-07-19 1995-07-18 Sprachkodierer
CA002154192A CA2154192A1 (en) 1994-07-19 1995-07-19 Speech coder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6187903A JPH0830299A (ja) 1994-07-19 1994-07-19 音声符号化装置

Publications (1)

Publication Number Publication Date
JPH0830299A true JPH0830299A (ja) 1996-02-02

Family

ID=16214222

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6187903A Pending JPH0830299A (ja) 1994-07-19 1994-07-19 音声符号化装置

Country Status (3)

Country Link
EP (1) EP0694907A3 (de)
JP (1) JPH0830299A (de)
CA (1) CA2154192A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007241297A (ja) * 2007-03-27 2007-09-20 Matsushita Electric Ind Co Ltd 音声符号化装置
WO2008072732A1 (ja) * 2006-12-14 2008-06-19 Panasonic Corporation 音声符号化装置および音声符号化方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08292798A (ja) * 1995-04-24 1996-11-05 Nec Corp 音声再生制御方式
JP3343082B2 (ja) * 1998-10-27 2002-11-11 松下電器産業株式会社 Ｃｅｌｐ型音声符号化装置
JP3594854B2 (ja) * 1999-11-08 2004-12-02 三菱電機株式会社 音声符号化装置及び音声復号化装置
USRE43209E1 (en) 1999-11-08 2012-02-21 Mitsubishi Denki Kabushiki Kaisha Speech coding apparatus and speech decoding apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02500620A (ja) * 1987-08-28 1990-03-01 ブリテツシユ・テレコミユニケイシヨンズ・パブリツク・リミテツド・カンパニー コード化通信システム
JPH0580798A (ja) * 1991-09-25 1993-04-02 Mitsubishi Electric Corp 音声符号化復号化装置および音源生成方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5097508A (en) 1989-08-31 1992-03-17 Codex Corporation Digital speech coder having improved long term lag parameter determination
US5495555A (en) * 1992-06-01 1996-02-27 Hughes Aircraft Company High quality low bit rate celp-based speech codec

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02500620A (ja) * 1987-08-28 1990-03-01 ブリテツシユ・テレコミユニケイシヨンズ・パブリツク・リミテツド・カンパニー コード化通信システム
JPH0580798A (ja) * 1991-09-25 1993-04-02 Mitsubishi Electric Corp 音声符号化復号化装置および音源生成方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008072732A1 (ja) * 2006-12-14 2008-06-19 Panasonic Corporation 音声符号化装置および音声符号化方法
JP2007241297A (ja) * 2007-03-27 2007-09-20 Matsushita Electric Ind Co Ltd 音声符号化装置

Also Published As

Publication number Publication date
EP0694907A2 (de) 1996-01-31
EP0694907A3 (de) 1997-10-15
CA2154192A1 (en) 1996-01-20

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