CA2378012A1 - Controle d'echo dans un domaine code - Google Patents
Controle d'echo dans un domaine code Download PDFInfo
- Publication number
- CA2378012A1 CA2378012A1 CA002378012A CA2378012A CA2378012A1 CA 2378012 A1 CA2378012 A1 CA 2378012A1 CA 002378012 A CA002378012 A CA 002378012A CA 2378012 A CA2378012 A CA 2378012A CA 2378012 A1 CA2378012 A1 CA 2378012A1
- Authority
- CA
- Canada
- Prior art keywords
- parameter
- code
- near end
- digital signal
- echo
- 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.)
- Abandoned
Links
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- 238000007906 compression Methods 0.000 claims abstract description 60
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- 238000004891 communication Methods 0.000 claims abstract description 13
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- 238000001914 filtration Methods 0.000 claims description 5
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- 230000001629 suppression Effects 0.000 description 1
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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 TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Computer Networks & Wireless Communication (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Health & Medical Sciences (AREA)
- Computational Linguistics (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Abstract
Un système de communication (10) transmet un signal numérique d'extrémité proche au moyen d'un code de compression composé d'une pluralité de paramètres, y compris un premier paramètre. Ces paramètres représentent un signal sonore comprenant une pluralité de caractéristiques sonores. Ce code de compression est décodable par une pluralité d'étapes de décodage. Ce système transmet également un signal numérique d'extrémité lointaine au moyen d'un code de compression. Un terminal (20) reçoit le signal numérique d'extrémité proche et un terminal (36) reçoit le signal numérique d'extrémité lointaine. Un processeur (40) réagit au signal numérique d'extrémité proche afin de lire au moins le premier paramètre. Ce processeur génère des signaux d'extrémité proche au moins partiellement décodés et des signaux d'extrémité lointaine au moins partiellement décodés. Le processeur règle le premier paramètre en fonction de ces signaux et entre le premier paramètre réglé dans le signal numérique d'extrémité proche. Un autre terminal (22) transmet le signal numérique d'extrémité proche réglé. Ceci permet de limiter l'écho du signal numérique d'extrémité proche.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14213699P | 1999-07-02 | 1999-07-02 | |
US60/142,136 | 1999-07-02 | ||
PCT/US2000/018104 WO2001003316A1 (fr) | 1999-07-02 | 2000-06-30 | Controle d'echo dans un domaine code |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2378012A1 true CA2378012A1 (fr) | 2001-01-11 |
Family
ID=22498680
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002378035A Abandoned CA2378035A1 (fr) | 1999-07-02 | 2000-06-30 | Gestion du bruit du domaine code |
CA002378062A Abandoned CA2378062A1 (fr) | 1999-07-02 | 2000-06-30 | Commande de parole comprimee adaptative de niveau a domaine code |
CA002378012A Abandoned CA2378012A1 (fr) | 1999-07-02 | 2000-06-30 | Controle d'echo dans un domaine code |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002378035A Abandoned CA2378035A1 (fr) | 1999-07-02 | 2000-06-30 | Gestion du bruit du domaine code |
CA002378062A Abandoned CA2378062A1 (fr) | 1999-07-02 | 2000-06-30 | Commande de parole comprimee adaptative de niveau a domaine code |
Country Status (5)
Country | Link |
---|---|
EP (3) | EP1208413A2 (fr) |
JP (3) | JP2003503760A (fr) |
AU (3) | AU6203300A (fr) |
CA (3) | CA2378035A1 (fr) |
WO (3) | WO2001002929A2 (fr) |
Families Citing this family (16)
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 |
US8078659B2 (en) * | 2005-10-31 | 2011-12-13 | Telefonaktiebolaget L M Ericsson (Publ) | Reduction of digital filter delay |
US7852792B2 (en) * | 2006-09-19 | 2010-12-14 | Alcatel-Lucent Usa Inc. | Packet based echo cancellation and suppression |
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 |
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 |
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 |
WO2009029076A1 (fr) * | 2007-08-31 | 2009-03-05 | Tellabs Operations, Inc. | Contrôle d'écho dans un domaine codé |
CN102726034B (zh) | 2011-07-25 | 2014-01-08 | 华为技术有限公司 | 一种参数域回声控制装置和方法 |
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 |
JP6816277B2 (ja) * | 2017-07-03 | 2021-01-20 | パイオニア株式会社 | 信号処理装置、制御方法、プログラム及び記憶媒体 |
Family Cites Families (16)
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 |
US5943645A (en) * | 1996-12-19 | 1999-08-24 | Northern Telecom Limited | Method and apparatus for computing measures of echo |
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 |
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 |
EP1052620B1 (fr) * | 1997-12-24 | 2004-07-21 | Mitsubishi Denki Kabushiki Kaisha | Procede de codage et de decodage sonore et dispositif de codage et de decodage correspondant |
-
2000
- 2000-06-30 WO PCT/US2000/018165 patent/WO2001002929A2/fr not_active Application Discontinuation
- 2000-06-30 EP EP00946954A patent/EP1208413A2/fr active Pending
- 2000-06-30 JP JP2001508064A patent/JP2003503760A/ja active Pending
- 2000-06-30 CA CA002378035A patent/CA2378035A1/fr not_active Abandoned
- 2000-06-30 CA CA002378062A patent/CA2378062A1/fr not_active Abandoned
- 2000-06-30 EP EP00946994A patent/EP1190494A1/fr not_active Withdrawn
- 2000-06-30 JP JP2001508667A patent/JP2003504669A/ja active Pending
- 2000-06-30 CA CA002378012A patent/CA2378012A1/fr not_active Abandoned
- 2000-06-30 AU AU62033/00A patent/AU6203300A/en not_active Abandoned
- 2000-06-30 AU AU60636/00A patent/AU6063600A/en not_active Abandoned
- 2000-06-30 WO PCT/US2000/018293 patent/WO2001003317A1/fr not_active Application Discontinuation
- 2000-06-30 AU AU60671/00A patent/AU6067100A/en not_active Abandoned
- 2000-06-30 EP EP00948555A patent/EP1190495A1/fr not_active Withdrawn
- 2000-06-30 WO PCT/US2000/018104 patent/WO2001003316A1/fr not_active Application Discontinuation
- 2000-06-30 JP JP2001508063A patent/JP2003533902A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP1208413A2 (fr) | 2002-05-29 |
CA2378035A1 (fr) | 2001-01-11 |
AU6063600A (en) | 2001-01-22 |
CA2378062A1 (fr) | 2001-01-11 |
JP2003533902A (ja) | 2003-11-11 |
JP2003503760A (ja) | 2003-01-28 |
JP2003504669A (ja) | 2003-02-04 |
WO2001002929A2 (fr) | 2001-01-11 |
WO2001003316A1 (fr) | 2001-01-11 |
EP1190495A1 (fr) | 2002-03-27 |
WO2001003317A1 (fr) | 2001-01-11 |
AU6067100A (en) | 2001-01-22 |
EP1190494A1 (fr) | 2002-03-27 |
WO2001002929A3 (fr) | 2001-07-19 |
AU6203300A (en) | 2001-01-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FZDE | Discontinued |