CA2090205A1 - Speech coding system - Google Patents

Speech coding system

Info

Publication number
CA2090205A1
CA2090205A1 CA2090205A CA2090205A CA2090205A1 CA 2090205 A1 CA2090205 A1 CA 2090205A1 CA 2090205 A CA2090205 A CA 2090205A CA 2090205 A CA2090205 A CA 2090205A CA 2090205 A1 CA2090205 A1 CA 2090205A1
Authority
CA
Canada
Prior art keywords
weighted
speech vector
speech
signal
adaptive
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.)
Granted
Application number
CA2090205A
Other languages
French (fr)
Other versions
CA2090205C (en
Inventor
Masahiro Serizawa
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
Individual
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 Individual filed Critical Individual
Publication of CA2090205A1 publication Critical patent/CA2090205A1/en
Application granted granted Critical
Publication of CA2090205C publication Critical patent/CA2090205C/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
    • G10L19/04—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)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

An input speech signal is splitted into a time section and generating the splitted signal as a speech vector and LPC coefficient sets are developed by linear prediction analysis for every time section of the speech vector. The speech vector is weighted based on the developed LPC
coefficient sets, then a plurality of the weighted speech vectors are connected and the connected speech vector having a predetermined frame length is generated.
An excitation codevector whose weighted synthesized signal is the most similar to the weighted speech vector is determined among from a plurality of excitation vectors each having the frame length which are previously stored as a sound source. A plurality or adaptive codevectors each having the frame length and obtained by cutting out a sound source signal produced from the determined excitation vectors at predetermined timing points are stored in an adaptive codebook. An adaptive codevector whose weighted synthesized signal is the most similar to the weighted speech vector is determined among from the plurality of adaptive codevectors.
CA002090205A 1992-02-24 1993-02-23 Speech coding system Expired - Fee Related CA2090205C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP03588192A JP3248215B2 (en) 1992-02-24 1992-02-24 Audio coding device
JP035881/1992 1992-02-24

Publications (2)

Publication Number Publication Date
CA2090205A1 true CA2090205A1 (en) 1993-08-25
CA2090205C CA2090205C (en) 1998-08-04

Family

ID=12454351

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002090205A Expired - Fee Related CA2090205C (en) 1992-02-24 1993-02-23 Speech coding system

Country Status (4)

Country Link
EP (1) EP0557940B1 (en)
JP (1) JP3248215B2 (en)
CA (1) CA2090205C (en)
DE (1) DE69329476T2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2591430B2 (en) * 1993-06-30 1997-03-19 日本電気株式会社 Vector quantizer
KR100429078B1 (en) 1995-05-10 2004-04-29 닌텐도가부시키가이샤 Operating device with analog joystick
JP3524247B2 (en) 1995-10-09 2004-05-10 任天堂株式会社 Game machine and game machine system using the same
DE69638186D1 (en) 1995-10-09 2010-07-01 Nintendo Co Ltd Three-dimensional image processing system
JP3544268B2 (en) 1995-10-09 2004-07-21 任天堂株式会社 Three-dimensional image processing apparatus and image processing method using the same
US6190257B1 (en) 1995-11-22 2001-02-20 Nintendo Co., Ltd. Systems and method for providing security in a video game system
US6022274A (en) 1995-11-22 2000-02-08 Nintendo Co., Ltd. Video game system using memory module
US6267673B1 (en) 1996-09-20 2001-07-31 Nintendo Co., Ltd. Video game system with state of next world dependent upon manner of entry from previous world via a portal
TW419645B (en) * 1996-05-24 2001-01-21 Koninkl Philips Electronics Nv A method for coding Human speech and an apparatus for reproducing human speech so coded
US6241610B1 (en) 1996-09-20 2001-06-05 Nintendo Co., Ltd. Three-dimensional image processing system having dynamically changing character polygon number
US6139434A (en) 1996-09-24 2000-10-31 Nintendo Co., Ltd. Three-dimensional image processing apparatus with enhanced automatic and user point of view control
JP3655438B2 (en) 1997-07-17 2005-06-02 任天堂株式会社 Video game system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE68922134T2 (en) * 1988-05-20 1995-11-30 Nippon Electric Co Coded speech transmission system with codebooks for synthesizing low amplitude components.
US4975956A (en) * 1989-07-26 1990-12-04 Itt Corporation Low-bit-rate speech coder using LPC data reduction processing
US5208862A (en) * 1990-02-22 1993-05-04 Nec Corporation Speech coder
JPH05108096A (en) * 1991-10-18 1993-04-30 Sanyo Electric Co Ltd Vector drive type speech encoding device

Also Published As

Publication number Publication date
JP3248215B2 (en) 2002-01-21
CA2090205C (en) 1998-08-04
EP0557940B1 (en) 2000-09-27
EP0557940A2 (en) 1993-09-01
DE69329476T2 (en) 2001-02-08
DE69329476D1 (en) 2000-11-02
EP0557940A3 (en) 1994-03-23
JPH05232997A (en) 1993-09-10

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