EP0516439A3 - Efficient celp vocoder and method - Google Patents

Efficient celp vocoder and method Download PDF

Info

Publication number
EP0516439A3
EP0516439A3 EP19920304875 EP92304875A EP0516439A3 EP 0516439 A3 EP0516439 A3 EP 0516439A3 EP 19920304875 EP19920304875 EP 19920304875 EP 92304875 A EP92304875 A EP 92304875A EP 0516439 A3 EP0516439 A3 EP 0516439A3
Authority
EP
European Patent Office
Prior art keywords
celp vocoder
efficient
efficient celp
vocoder
celp
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.)
Withdrawn
Application number
EP19920304875
Other versions
EP0516439A2 (en
Inventor
William Chunhung Yip
David Lee Barron
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 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
Priority claimed from US07/708,609 external-priority patent/US5173941A/en
Priority claimed from US07/708,947 external-priority patent/US5265190A/en
Priority claimed from US07/714,409 external-priority patent/US5179594A/en
Priority claimed from US07/722,572 external-priority patent/US5187745A/en
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of EP0516439A2 publication Critical patent/EP0516439A2/en
Publication of EP0516439A3 publication Critical patent/EP0516439A3/en
Withdrawn legal-status Critical Current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
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • 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
    • G10L2019/0014—Selection criteria for distances
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/06—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being correlation 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band

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)
EP19920304875 1991-05-31 1992-05-28 Efficient celp vocoder and method Withdrawn EP0516439A3 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US708609 1991-05-31
US07/708,609 US5173941A (en) 1991-05-31 1991-05-31 Reduced codebook search arrangement for CELP vocoders
US708947 1991-05-31
US07/708,947 US5265190A (en) 1991-05-31 1991-05-31 CELP vocoder with efficient adaptive codebook search
US07/714,409 US5179594A (en) 1991-06-12 1991-06-12 Efficient calculation of autocorrelation coefficients for CELP vocoder adaptive codebook
US714409 1991-06-12
US07/722,572 US5187745A (en) 1991-06-27 1991-06-27 Efficient codebook search for CELP vocoders
US722572 1991-06-27

Publications (2)

Publication Number Publication Date
EP0516439A2 EP0516439A2 (en) 1992-12-02
EP0516439A3 true EP0516439A3 (en) 1993-06-16

Family

ID=27505511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920304875 Withdrawn EP0516439A3 (en) 1991-05-31 1992-05-28 Efficient celp vocoder and method

Country Status (2)

Country Link
EP (1) EP0516439A3 (en)
JP (1) JPH06138896A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06186998A (en) * 1992-12-15 1994-07-08 Nec Corp Code book search system of speech encoding device
US5434947A (en) * 1993-02-23 1995-07-18 Motorola Method for generating a spectral noise weighting filter for use in a speech coder
US5504834A (en) * 1993-05-28 1996-04-02 Motrola, Inc. Pitch epoch synchronous linear predictive coding vocoder and method
CA2137756C (en) * 1993-12-10 2000-02-01 Kazunori Ozawa Voice coder and a method for searching codebooks
IT1271182B (en) * 1994-06-20 1997-05-27 Alcatel Italia METHOD TO IMPROVE THE PERFORMANCE OF VOICE CODERS
JP3144244B2 (en) * 1994-11-08 2001-03-12 日本電気株式会社 Audio coding device
JP3303580B2 (en) * 1995-02-23 2002-07-22 日本電気株式会社 Audio coding device
JPH08263099A (en) * 1995-03-23 1996-10-11 Toshiba Corp Encoder
JP3680380B2 (en) * 1995-10-26 2005-08-10 ソニー株式会社 Speech coding method and apparatus
US5839098A (en) 1996-12-19 1998-11-17 Lucent Technologies Inc. Speech coder methods and systems
JP3593839B2 (en) 1997-03-28 2004-11-24 ソニー株式会社 Vector search method
US6556966B1 (en) 1998-08-24 2003-04-29 Conexant Systems, Inc. Codebook structure for changeable pulse multimode speech coding
US6173257B1 (en) 1998-08-24 2001-01-09 Conexant Systems, Inc Completed fixed codebook for speech encoder
US6714907B2 (en) 1998-08-24 2004-03-30 Mindspeed Technologies, Inc. Codebook structure and search for speech coding
JPWO2008018464A1 (en) * 2006-08-08 2009-12-24 パナソニック株式会社 Speech coding apparatus and speech coding method
US9324331B2 (en) 2011-01-14 2016-04-26 Panasonic Intellectual Property Corporation Of America Coding device, communication processing device, and coding method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2173679A (en) * 1985-04-03 1986-10-15 British Telecomm Speech coding
EP0296763A1 (en) * 1987-06-26 1988-12-28 AT&T Corp. Code excited linear predictive vocoder and method of operation
US4969192A (en) * 1987-04-06 1990-11-06 Voicecraft, Inc. Vector adaptive predictive coder for speech and audio

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2173679A (en) * 1985-04-03 1986-10-15 British Telecomm Speech coding
US4969192A (en) * 1987-04-06 1990-11-06 Voicecraft, Inc. Vector adaptive predictive coder for speech and audio
EP0296763A1 (en) * 1987-06-26 1988-12-28 AT&T Corp. Code excited linear predictive vocoder and method of operation

Also Published As

Publication number Publication date
JPH06138896A (en) 1994-05-20
EP0516439A2 (en) 1992-12-02

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