DE3478065D1 - Method and apparatus for coding digital signals - Google Patents

Method and apparatus for coding digital signals

Info

Publication number
DE3478065D1
DE3478065D1 DE8484112041T DE3478065T DE3478065D1 DE 3478065 D1 DE3478065 D1 DE 3478065D1 DE 8484112041 T DE8484112041 T DE 8484112041T DE 3478065 T DE3478065 T DE 3478065T DE 3478065 D1 DE3478065 D1 DE 3478065D1
Authority
DE
Germany
Prior art keywords
block
signal
excitation signal
lpc coefficients
excitation
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.)
Expired
Application number
DE8484112041T
Other languages
German (de)
English (en)
Inventor
Michael George Beyrouti
Paul Mermelstein
Haim Garten
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom 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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Application granted granted Critical
Publication of DE3478065D1 publication Critical patent/DE3478065D1/de
Expired 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
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Analogue/Digital Conversion (AREA)
DE8484112041T 1983-11-30 1984-10-08 Method and apparatus for coding digital signals Expired DE3478065D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000442281A CA1236922A (fr) 1983-11-30 1983-11-30 Methode et appareil de codage de signaux numerique

Publications (1)

Publication Number Publication Date
DE3478065D1 true DE3478065D1 (en) 1989-06-08

Family

ID=4126639

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484112041T Expired DE3478065D1 (en) 1983-11-30 1984-10-08 Method and apparatus for coding digital signals

Country Status (5)

Country Link
EP (1) EP0149724B1 (fr)
JP (1) JPS60185432A (fr)
AT (1) ATE42853T1 (fr)
CA (1) CA1236922A (fr)
DE (1) DE3478065D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5048088A (en) * 1988-03-28 1991-09-10 Nec Corporation Linear predictive speech analysis-synthesis apparatus
US5701392A (en) * 1990-02-23 1997-12-23 Universite De Sherbrooke Depth-first algebraic-codebook search for fast coding of speech
US5754976A (en) * 1990-02-23 1998-05-19 Universite De Sherbrooke Algebraic codebook with signal-selected pulse amplitude/position combinations for fast coding of speech
WO1995001673A1 (fr) * 1993-06-30 1995-01-12 Royal Melbourne Institute Of Technology Fenetres de filtrage destinees a la compression de signaux a transformation de fourier
KR100510399B1 (ko) * 1998-02-17 2005-08-30 모토로라 인코포레이티드 고정 코드북내의 최적 벡터의 고속 결정 방법 및 장치
KR100587099B1 (ko) 2003-05-10 2006-06-07 엘지전자 주식회사 사이클론 방식 진공 청소기의 집진 유니트

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4472832A (en) * 1981-12-01 1984-09-18 At&T Bell Laboratories Digital speech coder

Also Published As

Publication number Publication date
EP0149724B1 (fr) 1989-05-03
CA1236922A (fr) 1988-05-17
JPS60185432A (ja) 1985-09-20
ATE42853T1 (de) 1989-05-15
EP0149724A1 (fr) 1985-07-31

Similar Documents

Publication Publication Date Title
US4852169A (en) Method for enhancing the quality of coded speech
RU93058657A (ru) Вокодер с переменной скоростью кодирования и передачи данных
ES539384A0 (es) Una diposicion de filtro de interpolacion de muestras discretas en el tiempo
US4935963A (en) Method and apparatus for processing speech signals
GB2110906A (en) Processing sequential patterns
CA2183283A1 (fr) Codeur rcelp ameliore
US4726037A (en) Predictive communication system filtering arrangement
DE3751449D1 (de) Digitales codierverfahren.
FI915873A0 (fi) Polyfon kodning.
GB1485803A (en) Method and apparatus for the analysis and synthesis of speech
DE3478065D1 (en) Method and apparatus for coding digital signals
EP0280574A3 (fr) Procédé et appareil pour le codage prédictif
JPS55111995A (en) Method and device for voice synthesis
CA1308193C (fr) Systeme de codage multi-impulsion
WO1999041737A8 (fr) Procede et appareil permettant de determiner a grande vitesse un vecteur optimal dans une liste de codage fixe
US4962536A (en) Multi-pulse voice encoder with pitch prediction in a cross-correlation domain
EP0405548A3 (en) System for speech coding and apparatus for the same
GB2186160A (en) Method and apparatus for processing speech signals
CA1334690C (fr) Codeur de paroles dans lequel les amplitudes codees sont multipliees par des facteurs qui dependent de la position des impulsions
JPS6454499A (en) Pulse searching for multi-pulse voice encoding
JPS6439840A (en) Coding device
JPH01179200A (ja) 音声符号化方式
JPH077277B2 (ja) 音声符号化方法とその装置
JPS5732154A (en) Crosstalk suppression system of pam multiplexing circuit
JPH0833757B2 (ja) 音声符号器

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee