GB2368761B - Speech codec and methods for generating a vector codebook and encoding/decoding speech signals - Google Patents

Speech codec and methods for generating a vector codebook and encoding/decoding speech signals

Info

Publication number
GB2368761B
GB2368761B GB0026463A GB0026463A GB2368761B GB 2368761 B GB2368761 B GB 2368761B GB 0026463 A GB0026463 A GB 0026463A GB 0026463 A GB0026463 A GB 0026463A GB 2368761 B GB2368761 B GB 2368761B
Authority
GB
Grant status
Grant
Patent type
Prior art keywords
encoding
generating
methods
speech
vector codebook
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
GB0026463A
Other versions
GB2368761A (en )
GB0026463D0 (en )
Inventor
Jonathan Alastair Gibbs
James Malcolm Hoskin
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 Inc
Original Assignee
Motorola Solutions Inc
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
Grant date

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/04Speech 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
    • G10L19/06Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • G10L19/07Line spectrum pair [LSP] vocoders
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L2019/0001Codebooks
    • G10L2019/0004Design or structure of the codebook
    • G10L2019/0005Multi-stage vector quantisation
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L2019/0001Codebooks
    • G10L2019/0007Codebook element generation
GB0026463A 2000-10-30 2000-10-30 Speech codec and methods for generating a vector codebook and encoding/decoding speech signals Expired - Fee Related GB2368761B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0026463A GB2368761B (en) 2000-10-30 2000-10-30 Speech codec and methods for generating a vector codebook and encoding/decoding speech signals

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB0026463A GB2368761B (en) 2000-10-30 2000-10-30 Speech codec and methods for generating a vector codebook and encoding/decoding speech signals
DE2001613144 DE60113144T2 (en) 2000-10-30 2001-10-22 Speech codec and method for generating a vector codebook and for encoding / decoding of speech signals
EP20010993000 EP1334485B1 (en) 2000-10-30 2001-10-22 Speech codec and method for generating a vector codebook and encoding/decoding speech signals
DE2001613144 DE60113144D1 (en) 2000-10-30 2001-10-22 Speech codec and method for generating a vector codebook and for encoding / decoding of speech signals
PCT/EP2001/012403 WO2002037477A1 (en) 2000-10-30 2001-10-22 Speech codec and method for generating a vector codebook and encoding/decoding speech signals

Publications (3)

Publication Number Publication Date
GB0026463D0 GB0026463D0 (en) 2000-12-13
GB2368761A true GB2368761A (en) 2002-05-08
GB2368761B true GB2368761B (en) 2003-07-16

Family

ID=9902177

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0026463A Expired - Fee Related GB2368761B (en) 2000-10-30 2000-10-30 Speech codec and methods for generating a vector codebook and encoding/decoding speech signals

Country Status (4)

Country Link
EP (1) EP1334485B1 (en)
DE (2) DE60113144D1 (en)
GB (1) GB2368761B (en)
WO (1) WO2002037477A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0703795D0 (en) * 2007-02-27 2007-04-04 Sepura Ltd Speech encoding and decoding in communications systems

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0411655A2 (en) * 1989-08-04 1991-02-06 Fujitsu Limited Vector quantization encoder and vector quantization decoder
WO1995010760A2 (en) * 1993-10-08 1995-04-20 Comsat Corporation Improved low bit rate vocoders and methods of operation therefor
GB2300548A (en) * 1995-05-02 1996-11-06 Motorola Ltd Vector quantization method for a communications system
WO1997027578A1 (en) * 1996-01-26 1997-07-31 Motorola Inc. Very low bit rate time domain speech analyzer for voice messaging
WO1999065017A1 (en) * 1998-06-09 1999-12-16 Matsushita Electric Industrial Co., Ltd. Speech coding apparatus and speech decoding apparatus
WO2002023527A1 (en) * 2000-09-15 2002-03-21 Telefonaktiebolaget Lm Ericsson Multi-channel signal encoding and decoding

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5621852A (en) * 1993-12-14 1997-04-15 Interdigital Technology Corporation Efficient codebook structure for code excited linear prediction coding
JP4132154B2 (en) * 1997-10-23 2008-08-13 ソニー株式会社 Speech synthesis method and apparatus, as well as bandwidth extension method and apparatus
US5966688A (en) * 1997-10-28 1999-10-12 Hughes Electronics Corporation Speech mode based multi-stage vector quantizer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0411655A2 (en) * 1989-08-04 1991-02-06 Fujitsu Limited Vector quantization encoder and vector quantization decoder
WO1995010760A2 (en) * 1993-10-08 1995-04-20 Comsat Corporation Improved low bit rate vocoders and methods of operation therefor
GB2300548A (en) * 1995-05-02 1996-11-06 Motorola Ltd Vector quantization method for a communications system
WO1997027578A1 (en) * 1996-01-26 1997-07-31 Motorola Inc. Very low bit rate time domain speech analyzer for voice messaging
WO1999065017A1 (en) * 1998-06-09 1999-12-16 Matsushita Electric Industrial Co., Ltd. Speech coding apparatus and speech decoding apparatus
WO2002023527A1 (en) * 2000-09-15 2002-03-21 Telefonaktiebolaget Lm Ericsson Multi-channel signal encoding and decoding

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Int. Conf. Acoustics, Speech & Signal Processing (ICASSP-90) vol 1, pages 221-224 *

Also Published As

Publication number Publication date Type
EP1334485B1 (en) 2005-08-31 grant
DE60113144T2 (en) 2006-06-14 grant
GB2368761A (en) 2002-05-08 application
DE60113144D1 (en) 2005-10-06 grant
EP1334485A1 (en) 2003-08-13 application
WO2002037477A1 (en) 2002-05-10 application
GB0026463D0 (en) 2000-12-13 grant

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Legal Events

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

Effective date: 20081030