FI932049A - Förfarande för åstadkommande av ett syntesfilter för långtidsintervall samt syntesfilter för talkodrar - Google Patents

Förfarande för åstadkommande av ett syntesfilter för långtidsintervall samt syntesfilter för talkodrar Download PDF

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Publication number
FI932049A
FI932049A FI932049A FI932049A FI932049A FI 932049 A FI932049 A FI 932049A FI 932049 A FI932049 A FI 932049A FI 932049 A FI932049 A FI 932049A FI 932049 A FI932049 A FI 932049A
Authority
FI
Finland
Prior art keywords
filter
providing
long
speech coder
term interval
Prior art date
Application number
FI932049A
Other languages
English (en)
Finnish (fi)
Other versions
FI96248B (sv
FI96248C (sv
FI932049A0 (sv
Inventor
Kari Juhani Jaervinen
Original Assignee
Nokia Mobile Phones 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 Nokia Mobile Phones Ltd filed Critical Nokia Mobile Phones Ltd
Priority to FI932049A priority Critical patent/FI96248C/sv
Publication of FI932049A0 publication Critical patent/FI932049A0/sv
Priority to DE69419453T priority patent/DE69419453T2/de
Priority to JP6094561A priority patent/JPH0728498A/ja
Priority to EP94303292A priority patent/EP0623916B1/en
Publication of FI932049A publication Critical patent/FI932049A/sv
Publication of FI96248B publication Critical patent/FI96248B/sv
Priority to US08/639,718 priority patent/US5761635A/en
Application granted granted Critical
Publication of FI96248C publication Critical patent/FI96248C/sv

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
    • 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
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • 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
    • G10L25/90—Pitch determination of speech signals

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)
  • Filters That Use Time-Delay Elements (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FI932049A 1993-05-06 1993-05-06 Förfarande för åstadkommande av ett syntesfilter för långtidsintervall samt syntesfilter för talkodrar FI96248C (sv)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FI932049A FI96248C (sv) 1993-05-06 1993-05-06 Förfarande för åstadkommande av ett syntesfilter för långtidsintervall samt syntesfilter för talkodrar
DE69419453T DE69419453T2 (de) 1993-05-06 1994-05-06 Verfahren und Vorrichtung zum Einbau eines langterm Synthesefilters
JP6094561A JPH0728498A (ja) 1993-05-06 1994-05-06 長期合成フィルターを稼働させる方法及び装置
EP94303292A EP0623916B1 (en) 1993-05-06 1994-05-06 A method and apparatus for implementing a long-term synthesis filter
US08/639,718 US5761635A (en) 1993-05-06 1996-04-29 Method and apparatus for implementing a long-term synthesis filter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI932049A FI96248C (sv) 1993-05-06 1993-05-06 Förfarande för åstadkommande av ett syntesfilter för långtidsintervall samt syntesfilter för talkodrar
FI932049 1993-05-06

Publications (4)

Publication Number Publication Date
FI932049A0 FI932049A0 (sv) 1993-05-06
FI932049A true FI932049A (sv) 1994-11-07
FI96248B FI96248B (sv) 1996-02-15
FI96248C FI96248C (sv) 1996-05-27

Family

ID=8537873

Family Applications (1)

Application Number Title Priority Date Filing Date
FI932049A FI96248C (sv) 1993-05-06 1993-05-06 Förfarande för åstadkommande av ett syntesfilter för långtidsintervall samt syntesfilter för talkodrar

Country Status (5)

Country Link
US (1) US5761635A (sv)
EP (1) EP0623916B1 (sv)
JP (1) JPH0728498A (sv)
DE (1) DE69419453T2 (sv)
FI (1) FI96248C (sv)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI973873A (sv) 1997-10-02 1999-04-03 Nokia Mobile Phones Ltd Talkodning
FI980132A (sv) 1998-01-21 1999-07-22 Nokia Mobile Phones Ltd Adapterande efterfilter
FI113571B (sv) 1998-03-09 2004-05-14 Nokia Corp Talkodning
EP3422346B1 (en) * 2010-07-02 2020-04-22 Dolby International AB Audio encoding with decision about the application of postfiltering when decoding

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE15415T1 (de) * 1981-09-24 1985-09-15 Gretag Ag Verfahren und vorrichtung zur redundanzvermindernden digitalen sprachverarbeitung.
NL8400728A (nl) * 1984-03-07 1985-10-01 Philips Nv Digitale spraakcoder met basisband residucodering.
NL8500843A (nl) * 1985-03-22 1986-10-16 Koninkl Philips Electronics Nv Multipuls-excitatie lineair-predictieve spraakcoder.
IT1195350B (it) * 1986-10-21 1988-10-12 Cselt Centro Studi Lab Telecom Procedimento e dispositivo per la codifica e decodifica del segnale vocale mediante estrazione di para metri e tecniche di quantizzazione vettoriale
US4969192A (en) * 1987-04-06 1990-11-06 Voicecraft, Inc. Vector adaptive predictive coder for speech and audio
US4831624A (en) * 1987-06-04 1989-05-16 Motorola, Inc. Error detection method for sub-band coding
EP0341271A1 (en) * 1987-08-28 1989-11-15 BRITISH TELECOMMUNICATIONS public limited company Coded communications system
EP0316112A3 (en) * 1987-11-05 1989-05-31 AT&T Corp. Use of instantaneous and transitional spectral information in speech recognizers
US5359696A (en) * 1988-06-28 1994-10-25 Motorola Inc. Digital speech coder having improved sub-sample resolution long-term predictor
IT1224453B (it) * 1988-09-28 1990-10-04 Sip Procedimento e dispositivo per la codifica decodifica di segnali vocali con l'impiego di un eccitazione a impulsi multipli
CA2005115C (en) * 1989-01-17 1997-04-22 Juin-Hwey Chen Low-delay code-excited linear predictive coder for speech or audio
JPH02272500A (ja) * 1989-04-13 1990-11-07 Fujitsu Ltd コード駆動音声符号化方式
DE69029120T2 (de) * 1989-04-25 1997-04-30 Toshiba Kawasaki Kk Stimmenkodierer
EP0402058B1 (en) * 1989-06-07 1996-03-27 Canon Kabushiki Kaisha Predictive decoding device correcting code errors
EP0401452B1 (en) * 1989-06-07 1994-03-23 International Business Machines Corporation Low-delay low-bit-rate speech coder
JP3268360B2 (ja) 1989-09-01 2002-03-25 モトローラ・インコーポレイテッド 改良されたロングターム予測器を有するデジタル音声コーダ
JPH0398318A (ja) * 1989-09-11 1991-04-23 Fujitsu Ltd 音声符号化方式
US4980916A (en) 1989-10-26 1990-12-25 General Electric Company Method for improving speech quality in code excited linear predictive speech coding
US5073940A (en) * 1989-11-24 1991-12-17 General Electric Company Method for protecting multi-pulse coders from fading and random pattern bit errors
US5097507A (en) * 1989-12-22 1992-03-17 General Electric Company Fading bit error protection for digital cellular multi-pulse speech coder
US5148489A (en) * 1990-02-28 1992-09-15 Sri International Method for spectral estimation to improve noise robustness for speech recognition
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
JP2878796B2 (ja) * 1990-07-03 1999-04-05 国際電気株式会社 音声符号化器
US5293449A (en) * 1990-11-23 1994-03-08 Comsat Corporation Analysis-by-synthesis 2,4 kbps linear predictive speech codec
GB9105101D0 (en) * 1991-03-11 1991-04-24 British Telecomm Error burst detection
FI98104C (sv) * 1991-05-20 1997-04-10 Nokia Mobile Phones Ltd Förfaranden för generering av en exciteringsvektor och digital talkodare
DE69233502T2 (de) * 1991-06-11 2006-02-23 Qualcomm, Inc., San Diego Vocoder mit veränderlicher Bitrate
GB9118217D0 (en) * 1991-08-23 1991-10-09 British Telecomm Speech processing apparatus
US5233660A (en) * 1991-09-10 1993-08-03 At&T Bell Laboratories Method and apparatus for low-delay celp speech coding and decoding
FI90477C (sv) * 1992-03-23 1994-02-10 Nokia Mobile Phones Ltd En metod för förbättring av kvaliteten vid ett kodningssystem som använder lineär prognostisering

Also Published As

Publication number Publication date
FI96248B (sv) 1996-02-15
EP0623916A1 (en) 1994-11-09
FI96248C (sv) 1996-05-27
US5761635A (en) 1998-06-02
DE69419453T2 (de) 2000-02-24
DE69419453D1 (de) 1999-08-19
FI932049A0 (sv) 1993-05-06
JPH0728498A (ja) 1995-01-31
EP0623916B1 (en) 1999-07-14

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