CA2084323A1 - Systeme de codage de signaux vocaux pouvant transmettre un signal vocal a un faible debit - Google Patents

Systeme de codage de signaux vocaux pouvant transmettre un signal vocal a un faible debit

Info

Publication number
CA2084323A1
CA2084323A1 CA2084323A CA2084323A CA2084323A1 CA 2084323 A1 CA2084323 A1 CA 2084323A1 CA 2084323 A CA2084323 A CA 2084323A CA 2084323 A CA2084323 A CA 2084323A CA 2084323 A1 CA2084323 A1 CA 2084323A1
Authority
CA
Canada
Prior art keywords
speech signal
correlations
analyzer
analysis frame
excitation pulses
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
CA2084323A
Other languages
English (en)
Other versions
CA2084323C (fr
Inventor
Tetsu Taguchi
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 CA2084323A1 publication Critical patent/CA2084323A1/fr
Application granted granted Critical
Publication of CA2084323C publication Critical patent/CA2084323C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • G10L19/113—Regular pulse excitation

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)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
CA002084323A 1991-12-03 1992-12-02 Systeme de codage de signaux vocaux pouvant transmettre un signal vocal a un faible debit Expired - Lifetime CA2084323C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP31942791 1991-12-03
JP319427/1991 1991-12-03

Publications (2)

Publication Number Publication Date
CA2084323A1 true CA2084323A1 (fr) 1993-06-04
CA2084323C CA2084323C (fr) 1996-12-03

Family

ID=18110076

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002084323A Expired - Lifetime CA2084323C (fr) 1991-12-03 1992-12-02 Systeme de codage de signaux vocaux pouvant transmettre un signal vocal a un faible debit

Country Status (5)

Country Link
US (1) US5557705A (fr)
EP (1) EP0545403B1 (fr)
AU (1) AU655090B2 (fr)
CA (1) CA2084323C (fr)
DE (1) DE69228790T2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2947012B2 (ja) * 1993-07-07 1999-09-13 日本電気株式会社 音声符号化装置並びにその分析器及び合成器
US5854998A (en) * 1994-04-29 1998-12-29 Audiocodes Ltd. Speech processing system quantizer of single-gain pulse excitation in speech coder
US5568588A (en) * 1994-04-29 1996-10-22 Audiocodes Ltd. Multi-pulse analysis speech processing System and method
CA2213909C (fr) * 1996-08-26 2002-01-22 Nec Corporation Codeur de paroles haute qualite utilisant de faibles debits binaires
KR20000064913A (ko) * 1997-02-10 2000-11-06 요트.게.아. 롤페즈 저ㄴ송 시스템, 수신기, 및 재구성된 음성 신호 유도 방법
KR100446594B1 (ko) * 1997-04-15 2005-06-02 삼성전자주식회사 음성선스펙트럼주파수의부호화/복호화장치및그방법
DE19860133C2 (de) * 1998-12-17 2001-11-22 Cortologic Ag Verfahren und Vorrichtung zur Sprachkompression
DE602007003023D1 (de) * 2006-05-30 2009-12-10 Koninkl Philips Electronics Nv Linear-prädiktive codierung eines audiosignals

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1219079A (fr) * 1983-06-27 1987-03-10 Tetsu Taguchi Vocodeur multi-impulsion
JPS60239798A (ja) * 1984-05-14 1985-11-28 日本電気株式会社 音声信号符号化／復号化装置
JPH0754440B2 (ja) * 1986-06-09 1995-06-07 日本電気株式会社 音声分析合成装置
CA1312673C (fr) * 1986-09-18 1993-01-12 Akira Fukui Methode et appareil de codage de paroles
CA1336841C (fr) * 1987-04-08 1995-08-29 Tetsu Taguchi Systeme de codage du type multi-implusion
DE68923771T2 (de) * 1988-12-23 1995-12-14 Nippon Electric Co Sprachübertragungssystem unter Anwendung von Mehrimpulsanregung.
DE69031749T2 (de) * 1989-06-14 1998-05-14 Nippon Electric Co Einrichtung und Verfahren zur Sprachkodierung mit Regular-Pulsanregung
US5228086A (en) * 1990-05-18 1993-07-13 Matsushita Electric Industrial Co., Ltd. Speech encoding apparatus and related decoding apparatus
US5305421A (en) * 1991-08-28 1994-04-19 Itt Corporation Low bit rate speech coding system and compression

Also Published As

Publication number Publication date
AU2987192A (en) 1993-06-10
US5557705A (en) 1996-09-17
EP0545403A3 (en) 1993-07-07
DE69228790T2 (de) 1999-09-02
AU655090B2 (en) 1994-12-01
DE69228790D1 (de) 1999-05-06
EP0545403B1 (fr) 1999-03-31
EP0545403A2 (fr) 1993-06-09
CA2084323C (fr) 1996-12-03

Similar Documents

Publication Publication Date Title
US4031462A (en) Frequency spectrum analyzer
CA2165343A1 (fr) Methode et appareil permettant de calculer la caracteristique de coagulation d'un echantillon de sang, fraction du sang ou un controle
GB1318985A (en) Audio response apparatus
ATE156946T1 (de) Abtastfrequenzumsetzer
EP0342687A3 (fr) Système de transmission de parole codée comportant des dictionnaires de codes pour la synthése des composantes de faible amplitude
CA2084323A1 (fr) Systeme de codage de signaux vocaux pouvant transmettre un signal vocal a un faible debit
CA2032520A1 (fr) Methode de positionnement d'impulsions d'excitation dans un codeur de paroles predictif lineaire
GB1335101A (en) Process and apparatus for the measurement or treatment of seismic signals
CA2154881A1 (fr) Systeme et procede de compression et de decompression de signaux audio
IE43171L (en) Digital device
DK0418958T3 (da) Fremgangsmåde og anordning til at konvertere et analogt indgangssignal til styrekoder samt til at syntetisere et tilsvarende udgangssignal under styring af disse styrekoder
US5202953A (en) Multi-pulse type coding system with correlation calculation by backward-filtering operation for multi-pulse searching
JPS6281850A (ja) 受信デ−タの最小ビツト検出方法
CA2127483A1 (fr) Systeme de codage de signaux vocaux pouvant transmettre un signal vocal a un faible debit binaire sans necessiter des calculs volumineux
US3531720A (en) Digital shift register filter with continuing frequency-fold sampling and time shared sub-band filtering
AU617993B2 (en) Multi-pulse type coding system
CA2225985A1 (fr) Systeme d'extraction de parametres de caracteristiques spectrales utilisant une fonction d'estimation de ponderation de frequence
CA2133837A1 (fr) Appareil et methode de comptage de cycles complets et partiels
WO1995032436A3 (fr) Traitement de signaux
SU1582175A1 (ru) Устройство дл измерени малых временных интервалов между последовательност ми импульсов пр моугольной формы
SU741178A1 (ru) Цифровое устройство дл сличени частот
GB2103375A (en) Display apparatus
SU568061A1 (ru) Способ распознавани сигналов
SU1363425A1 (ru) Умножитель частоты
GB2037523A (en) Frequency Sensing Circuit

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry
MKEX Expiry

Effective date: 20121203