AU698340B2 - Voice coder - Google Patents

Voice coder

Info

Publication number
AU698340B2
AU698340B2 AU21753/95A AU2175395A AU698340B2 AU 698340 B2 AU698340 B2 AU 698340B2 AU 21753/95 A AU21753/95 A AU 21753/95A AU 2175395 A AU2175395 A AU 2175395A AU 698340 B2 AU698340 B2 AU 698340B2
Authority
AU
Australia
Prior art keywords
voice coder
coder
voice
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
AU21753/95A
Other versions
AU2175395A (en
Inventor
Silvio Cucchi
Marco Fratti
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.)
Alcatel Lucent NV
Original Assignee
Alcatel NV
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 Alcatel NV filed Critical Alcatel NV
Publication of AU2175395A publication Critical patent/AU2175395A/en
Application granted granted Critical
Publication of AU698340B2 publication Critical patent/AU698340B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation 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
    • 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

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)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
AU21753/95A 1994-06-20 1995-06-20 Voice coder Ceased AU698340B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI94A1283 1994-06-20
ITMI941283A IT1271182B (en) 1994-06-20 1994-06-20 METHOD TO IMPROVE THE PERFORMANCE OF VOICE CODERS

Publications (2)

Publication Number Publication Date
AU2175395A AU2175395A (en) 1996-01-04
AU698340B2 true AU698340B2 (en) 1998-10-29

Family

ID=11369140

Family Applications (1)

Application Number Title Priority Date Filing Date
AU21753/95A Ceased AU698340B2 (en) 1994-06-20 1995-06-20 Voice coder

Country Status (4)

Country Link
EP (1) EP0689189B1 (en)
AU (1) AU698340B2 (en)
DE (1) DE69512323T2 (en)
IT (1) IT1271182B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3273455B2 (en) * 1994-10-07 2002-04-08 日本電信電話株式会社 Vector quantization method and its decoder
DE10047172C1 (en) * 2000-09-22 2001-11-29 Siemens Ag Speech processing involves comparing output parameters generated and to be generated and deriving change instruction using reduced weight of input parameters with little influence

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235669A (en) * 1990-06-29 1993-08-10 At&T Laboratories Low-delay code-excited linear-predictive coding of wideband speech at 32 kbits/sec
FI98104C (en) * 1991-05-20 1997-04-10 Nokia Mobile Phones Ltd Procedures for generating an excitation vector and digital speech encoder
JPH06138896A (en) * 1991-05-31 1994-05-20 Motorola Inc Device and method for encoding speech frame

Also Published As

Publication number Publication date
ITMI941283A0 (en) 1994-06-20
IT1271182B (en) 1997-05-27
DE69512323T2 (en) 2000-07-06
EP0689189A1 (en) 1995-12-27
EP0689189B1 (en) 1999-09-22
AU2175395A (en) 1996-01-04
ITMI941283A1 (en) 1995-12-20
DE69512323D1 (en) 1999-10-28

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired