CA2005115A1 - Codeur predictif lineaire excite par code a temps de retard bref pour les signaux vocaux ou audio - Google Patents

Codeur predictif lineaire excite par code a temps de retard bref pour les signaux vocaux ou audio

Info

Publication number
CA2005115A1
CA2005115A1 CA2005115A CA2005115A CA2005115A1 CA 2005115 A1 CA2005115 A1 CA 2005115A1 CA 2005115 A CA2005115 A CA 2005115A CA 2005115 A CA2005115 A CA 2005115A CA 2005115 A1 CA2005115 A1 CA 2005115A1
Authority
CA
Canada
Prior art keywords
speech
analysis
low
adaptive
backward
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
CA2005115A
Other languages
English (en)
Other versions
CA2005115C (fr
Inventor
Juin-Hwey Chen
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of CA2005115A1 publication Critical patent/CA2005115A1/fr
Application granted granted Critical
Publication of CA2005115C publication Critical patent/CA2005115C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/06—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L2019/0001—Codebooks
    • G10L2019/0003—Backward prediction of gain
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band
CA002005115A 1989-01-17 1989-12-11 Codeur predictif lineaire excite par code a temps de retard bref pour les signaux vocaux ou audio Expired - Lifetime CA2005115C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29845189A 1989-01-17 1989-01-17
US298,451 1989-01-17

Publications (2)

Publication Number Publication Date
CA2005115A1 true CA2005115A1 (fr) 1990-07-17
CA2005115C CA2005115C (fr) 1997-04-22

Family

ID=23150578

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002005115A Expired - Lifetime CA2005115C (fr) 1989-01-17 1989-12-11 Codeur predictif lineaire excite par code a temps de retard bref pour les signaux vocaux ou audio

Country Status (6)

Country Link
EP (1) EP0379296B1 (fr)
JP (1) JPH0771045B2 (fr)
KR (1) KR0161971B1 (fr)
CA (1) CA2005115C (fr)
DE (1) DE69026843T2 (fr)
ES (1) ES2087124T3 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2668288B1 (fr) * 1990-10-19 1993-01-15 Di Francesco Renaud Procede de transmission, a bas debit, par codage celp d'un signal de parole et systeme correspondant.
EP1675100A2 (fr) * 1991-06-11 2006-06-28 QUALCOMM Incorporated Vocodeur à vitesse variable
FI90477C (fi) * 1992-03-23 1994-02-10 Nokia Mobile Phones Ltd Puhesignaalin laadun parannusmenetelmä lineaarista ennustusta käyttävään koodausjärjestelmään
IT1257065B (it) * 1992-07-31 1996-01-05 Sip Codificatore a basso ritardo per segnali audio, utilizzante tecniche di analisi per sintesi.
FI95086C (fi) * 1992-11-26 1995-12-11 Nokia Mobile Phones Ltd Menetelmä puhesignaalin tehokkaaksi koodaamiseksi
FI96248C (fi) * 1993-05-06 1996-05-27 Nokia Mobile Phones Ltd Menetelmä pitkän aikavälin synteesisuodattimen toteuttamiseksi sekä synteesisuodatin puhekoodereihin
FI98164C (fi) * 1994-01-24 1997-04-25 Nokia Mobile Phones Ltd Puhekooderin parametrien käsittely tietoliikennejärjestelmän vastaanottimessa
FR2729245B1 (fr) * 1995-01-06 1997-04-11 Lamblin Claude Procede de codage de parole a prediction lineaire et excitation par codes algebriques
SE504010C2 (sv) * 1995-02-08 1996-10-14 Ericsson Telefon Ab L M Förfarande och anordning för prediktiv kodning av tal- och datasignaler
KR100389895B1 (ko) * 1996-05-25 2003-11-28 삼성전자주식회사 음성 부호화 및 복호화방법 및 그 장치
US8725501B2 (en) 2004-07-20 2014-05-13 Panasonic Corporation Audio decoding device and compensation frame generation method
GB201005764D0 (en) * 2010-04-07 2010-05-26 Icera Inc Gain adjuster
CN103730112B (zh) * 2013-12-25 2016-08-31 讯飞智元信息科技有限公司 语音多信道模拟与采集方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4817157A (en) * 1988-01-07 1989-03-28 Motorola, Inc. Digital speech coder having improved vector excitation source

Also Published As

Publication number Publication date
DE69026843D1 (de) 1996-06-13
AU607363B2 (en) 1991-02-28
JPH0771045B2 (ja) 1995-07-31
JPH02231825A (ja) 1990-09-13
KR900012451A (ko) 1990-08-04
KR0161971B1 (ko) 1998-12-01
EP0379296A2 (fr) 1990-07-25
AU4775390A (en) 1990-07-26
ES2087124T3 (es) 1996-07-16
EP0379296B1 (fr) 1996-05-08
DE69026843T2 (de) 1996-11-14
EP0379296A3 (fr) 1991-11-13
CA2005115C (fr) 1997-04-22

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