EP1208413A2 - Gestion du bruit du domaine code - Google Patents

Gestion du bruit du domaine code

Info

Publication number
EP1208413A2
EP1208413A2 EP00946954A EP00946954A EP1208413A2 EP 1208413 A2 EP1208413 A2 EP 1208413A2 EP 00946954 A EP00946954 A EP 00946954A EP 00946954 A EP00946954 A EP 00946954A EP 1208413 A2 EP1208413 A2 EP 1208413A2
Authority
EP
European Patent Office
Prior art keywords
parameter
adjusted
gain
codebook
generate
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.)
Pending
Application number
EP00946954A
Other languages
German (de)
English (en)
Inventor
Ravi Chandran
Daniel J. Marchok
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.)
Coriant Operations Inc
Original Assignee
Tellabs Operations 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 Tellabs Operations Inc filed Critical Tellabs Operations Inc
Publication of EP1208413A2 publication Critical patent/EP1208413A2/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0014—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the source coding

Abstract

L'invention porte sur un système de télécommunications (8) émettant des signaux numériques à l'aide d'un code de compression à plusieurs paramètres dont un premier. Lesdits paramètres représentent un signal audio incluant diverses caractéristiques audio dont une caractéristique de bruit. Le code de compression se décode en plusieurs étapes. Un processeur (150) en réponse au code de compression lit au moins le premier paramètre. Puis en fonction de ces signaux ajuste le premier paramètre puis l'inscrit dans le code de compression. On gère ainsi efficacement l'état du bruit.
EP00946954A 1999-07-02 2000-06-30 Gestion du bruit du domaine code Pending EP1208413A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US14213699P 1999-07-02 1999-07-02
US142136P 1999-07-02
PCT/US2000/018165 WO2001002929A2 (fr) 1999-07-02 2000-06-30 Gestion du bruit du domaine code

Publications (1)

Publication Number Publication Date
EP1208413A2 true EP1208413A2 (fr) 2002-05-29

Family

ID=22498680

Family Applications (3)

Application Number Title Priority Date Filing Date
EP00946994A Withdrawn EP1190494A1 (fr) 1999-07-02 2000-06-30 Commande de parole comprimee adaptative de niveau a domaine code
EP00946954A Pending EP1208413A2 (fr) 1999-07-02 2000-06-30 Gestion du bruit du domaine code
EP00948555A Withdrawn EP1190495A1 (fr) 1999-07-02 2000-06-30 Controle d'echo dans un domaine code

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP00946994A Withdrawn EP1190494A1 (fr) 1999-07-02 2000-06-30 Commande de parole comprimee adaptative de niveau a domaine code

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP00948555A Withdrawn EP1190495A1 (fr) 1999-07-02 2000-06-30 Controle d'echo dans un domaine code

Country Status (5)

Country Link
EP (3) EP1190494A1 (fr)
JP (3) JP2003533902A (fr)
AU (3) AU6063600A (fr)
CA (3) CA2378012A1 (fr)
WO (3) WO2001003316A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1301018A1 (fr) * 2001-10-02 2003-04-09 Alcatel Méthode et appareille pour modifié un signal digital dons un domain codifié
JP3946074B2 (ja) * 2002-04-05 2007-07-18 日本電信電話株式会社 音声処理装置
JP3876781B2 (ja) 2002-07-16 2007-02-07 ソニー株式会社 受信装置および受信方法、記録媒体、並びにプログラム
EP1521242A1 (fr) * 2003-10-01 2005-04-06 Siemens Aktiengesellschaft Procédé de codage de la parole avec réduction de bruit au moyen de la modification du gain du livre de code
US7613607B2 (en) 2003-12-18 2009-11-03 Nokia Corporation Audio enhancement in coded domain
US8874437B2 (en) 2005-03-28 2014-10-28 Tellabs Operations, Inc. Method and apparatus for modifying an encoded signal for voice quality enhancement
WO2007053086A1 (fr) * 2005-10-31 2007-05-10 Telefonaktiebolaget Lm Ericsson (Publ) Reduction de retard de filtre numerique
US7852792B2 (en) * 2006-09-19 2010-12-14 Alcatel-Lucent Usa Inc. Packet based echo cancellation and suppression
JP4915575B2 (ja) * 2007-05-28 2012-04-11 パナソニック株式会社 音声伝送システム
JP4915576B2 (ja) * 2007-05-28 2012-04-11 パナソニック株式会社 音声伝送システム
JP4915577B2 (ja) * 2007-05-28 2012-04-11 パナソニック株式会社 音声伝送システム
WO2009029076A1 (fr) * 2007-08-31 2009-03-05 Tellabs Operations, Inc. Contrôle d'écho dans un domaine codé
WO2012106926A1 (fr) 2011-07-25 2012-08-16 华为技术有限公司 Dispositif et procédé pour le traitement d'écho dans un domaine paramétrique
TWI469135B (zh) * 2011-12-22 2015-01-11 Univ Kun Shan 調適性差分脈衝碼調變編碼解碼的方法
JP6011188B2 (ja) * 2012-09-18 2016-10-19 沖電気工業株式会社 エコー経路遅延測定装置、方法及びプログラム
EP3651365A4 (fr) * 2017-07-03 2021-03-31 Pioneer Corporation Dispositif de traitement de signaux, procédé de commande, programme, et support d'informations

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0683114B2 (ja) * 1985-03-08 1994-10-19 松下電器産業株式会社 エコ−キヤンセラ
US4969192A (en) * 1987-04-06 1990-11-06 Voicecraft, Inc. Vector adaptive predictive coder for speech and audio
US5140543A (en) * 1989-04-18 1992-08-18 Victor Company Of Japan, Ltd. Apparatus for digitally processing audio signal
US5097507A (en) * 1989-12-22 1992-03-17 General Electric Company Fading bit error protection for digital cellular multi-pulse speech coder
US5680508A (en) * 1991-05-03 1997-10-21 Itt Corporation Enhancement of speech coding in background noise for low-rate speech coder
JP3353257B2 (ja) * 1993-08-30 2002-12-03 日本電信電話株式会社 音声符号化復号化併用型エコーキャンセラー
US5828995A (en) * 1995-02-28 1998-10-27 Motorola, Inc. Method and apparatus for intelligible fast forward and reverse playback of time-scale compressed voice messages
JPH0954600A (ja) * 1995-08-14 1997-02-25 Toshiba Corp 音声符号化通信装置
JPH0993132A (ja) * 1995-09-27 1997-04-04 Toshiba Corp 符号化・復号化装置及び方法
JPH10143197A (ja) * 1996-11-06 1998-05-29 Matsushita Electric Ind Co Ltd 再生装置
JP3283200B2 (ja) * 1996-12-19 2002-05-20 ケイディーディーアイ株式会社 符号化音声データの符号化レート変換方法および装置
US5943645A (en) * 1996-12-19 1999-08-24 Northern Telecom Limited Method and apparatus for computing measures of echo
US6064693A (en) * 1997-02-28 2000-05-16 Data Race, Inc. System and method for handling underrun of compressed speech frames due to unsynchronized receive and transmit clock rates
JP3317181B2 (ja) * 1997-03-25 2002-08-26 ヤマハ株式会社 カラオケ装置
US6112177A (en) * 1997-11-07 2000-08-29 At&T Corp. Coarticulation method for audio-visual text-to-speech synthesis
CA2636552C (fr) * 1997-12-24 2011-03-01 Mitsubishi Denki Kabushiki Kaisha Methode de codage et le decodage de la parole et appareils connexes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0102929A3 *

Also Published As

Publication number Publication date
AU6203300A (en) 2001-01-22
CA2378012A1 (fr) 2001-01-11
WO2001002929A3 (fr) 2001-07-19
CA2378035A1 (fr) 2001-01-11
AU6063600A (en) 2001-01-22
JP2003504669A (ja) 2003-02-04
EP1190495A1 (fr) 2002-03-27
WO2001002929A2 (fr) 2001-01-11
EP1190494A1 (fr) 2002-03-27
JP2003533902A (ja) 2003-11-11
JP2003503760A (ja) 2003-01-28
CA2378062A1 (fr) 2001-01-11
WO2001003316A1 (fr) 2001-01-11
AU6067100A (en) 2001-01-22
WO2001003317A1 (fr) 2001-01-11

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