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GB2346785B - Speech coder for a communications system and method for operation thereof - Google Patents

Speech coder for a communications system and method for operation thereof

Info

Publication number
GB2346785B
GB2346785B GB9819992A GB9819992A GB2346785B GB 2346785 B GB2346785 B GB 2346785B GB 9819992 A GB9819992 A GB 9819992A GB 9819992 A GB9819992 A GB 9819992A GB 2346785 B GB2346785 B GB 2346785B
Authority
GB
United Kingdom
Prior art keywords
communications system
speech coder
coder
speech
communications
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.)
Expired - Fee Related
Application number
GB9819992A
Other versions
GB2346785A (en
GB9819992D0 (en
Inventor
Dominic Sai Fan Chan
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.)
Motorola Solutions UK Ltd
Original Assignee
Motorola 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 Motorola Ltd filed Critical Motorola Ltd
Priority to GB9819992A priority Critical patent/GB2346785B/en
Publication of GB9819992D0 publication Critical patent/GB9819992D0/en
Priority to PCT/EP1999/006775 priority patent/WO2000016485A1/en
Priority to AU60824/99A priority patent/AU6082499A/en
Publication of GB2346785A publication Critical patent/GB2346785A/en
Application granted granted Critical
Publication of GB2346785B publication Critical patent/GB2346785B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G10L19/002—Dynamic bit allocation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3082—Vector coding
    • 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
    • G10L2019/0004—Design or structure of the codebook

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical 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)
GB9819992A 1998-09-15 1998-09-15 Speech coder for a communications system and method for operation thereof Expired - Fee Related GB2346785B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB9819992A GB2346785B (en) 1998-09-15 1998-09-15 Speech coder for a communications system and method for operation thereof
PCT/EP1999/006775 WO2000016485A1 (en) 1998-09-15 1999-09-13 Speech coder for a communications system and method for operation thereof
AU60824/99A AU6082499A (en) 1998-09-15 1999-09-13 Speech coder for a communications system and method for operation thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9819992A GB2346785B (en) 1998-09-15 1998-09-15 Speech coder for a communications system and method for operation thereof

Publications (3)

Publication Number Publication Date
GB9819992D0 GB9819992D0 (en) 1998-11-04
GB2346785A GB2346785A (en) 2000-08-16
GB2346785B true GB2346785B (en) 2000-11-15

Family

ID=10838833

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9819992A Expired - Fee Related GB2346785B (en) 1998-09-15 1998-09-15 Speech coder for a communications system and method for operation thereof

Country Status (3)

Country Link
AU (1) AU6082499A (en)
GB (1) GB2346785B (en)
WO (1) WO2000016485A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2176129C1 (en) * 2000-07-18 2001-11-20 Военный университет связи Method and device for compressing infinite- alphabet character string being coded to form binary coded character string
DE10149939A1 (en) * 2001-10-10 2003-04-17 Siemens Ag Method for training codebook e.g. for vector quantizers, involves evaluating data training records recursively in stages
WO2008064697A1 (en) * 2006-11-29 2008-06-05 Loquendo S.P.A. Multicodebook source -dependent coding and decoding
US20160210975A1 (en) 2012-07-12 2016-07-21 Adriana Vasilache Vector quantization

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0266620A1 (en) * 1986-10-21 1988-05-11 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Method of and device for speech signal coding and decoding by parameter extraction and vector quantization techniques
US5468069A (en) * 1993-08-03 1995-11-21 University Of So. California Single chip design for fast image compression
GB2300548A (en) * 1995-05-02 1996-11-06 Motorola Ltd Vector quantization method for a communications system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5388181A (en) * 1990-05-29 1995-02-07 Anderson; David J. Digital audio compression system
US5864650A (en) * 1992-09-16 1999-01-26 Fujitsu Limited Speech encoding method and apparatus using tree-structure delta code book
WO1994007239A1 (en) * 1992-09-16 1994-03-31 Fujitsu Limited Speech encoding method and apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0266620A1 (en) * 1986-10-21 1988-05-11 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Method of and device for speech signal coding and decoding by parameter extraction and vector quantization techniques
US5468069A (en) * 1993-08-03 1995-11-21 University Of So. California Single chip design for fast image compression
GB2300548A (en) * 1995-05-02 1996-11-06 Motorola Ltd Vector quantization method for a communications system

Also Published As

Publication number Publication date
WO2000016485A1 (en) 2000-03-23
GB2346785A (en) 2000-08-16
GB9819992D0 (en) 1998-11-04
AU6082499A (en) 2000-04-03

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20020915