CA2378012A1 - Coded domain echo control - Google Patents
Coded domain echo control 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
- 238000000034 method Methods 0.000 claims description 62
- 230000015572 biosynthetic process Effects 0.000 claims description 44
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- 230000004044 response Effects 0.000 claims description 31
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- 238000012545 processing Methods 0.000 claims description 13
- 230000007774 longterm Effects 0.000 claims description 10
- 230000005284 excitation Effects 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 5
- 238000010295 mobile communication Methods 0.000 claims description 3
- 238000013459 approach Methods 0.000 description 17
- 230000005540 biological transmission Effects 0.000 description 13
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- 238000012546 transfer Methods 0.000 description 4
- 230000001934 delay Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000005311 autocorrelation function Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
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- 208000018583 New-onset refractory status epilepticus Diseases 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 238000009499 grossing Methods 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (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)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
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 (en) | 1999-07-02 | 2000-06-30 | Coded domain echo control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2378012A1 true CA2378012A1 (en) | 2001-01-11 |
Family
ID=22498680
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002378012A Abandoned CA2378012A1 (en) | 1999-07-02 | 2000-06-30 | Coded domain echo control |
| CA002378035A Abandoned CA2378035A1 (en) | 1999-07-02 | 2000-06-30 | Coded domain noise control |
| CA002378062A Abandoned CA2378062A1 (en) | 1999-07-02 | 2000-06-30 | Coded domain adaptive level control of compressed speech |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002378035A Abandoned CA2378035A1 (en) | 1999-07-02 | 2000-06-30 | Coded domain noise control |
| CA002378062A Abandoned CA2378062A1 (en) | 1999-07-02 | 2000-06-30 | Coded domain adaptive level control of compressed speech |
Country Status (5)
| Country | Link |
|---|---|
| EP (3) | EP1190495A1 (ja) |
| JP (3) | JP2003504669A (ja) |
| AU (3) | AU6063600A (ja) |
| CA (3) | CA2378012A1 (ja) |
| WO (3) | WO2001003317A1 (ja) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1301018A1 (en) * | 2001-10-02 | 2003-04-09 | Alcatel | Apparatus and method for modifying a digital signal in the coded domain |
| 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 (en) * | 2003-10-01 | 2005-04-06 | Siemens Aktiengesellschaft | Speech coding method applying noise reduction by modifying the codebook gain |
| 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 |
| CA2624629A1 (en) * | 2005-10-31 | 2007-05-10 | 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 |
| 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 |
| WO2009029076A1 (en) * | 2007-08-31 | 2009-03-05 | Tellabs Operations, Inc. | Controlling echo in the coded domain |
| WO2012106926A1 (zh) | 2011-07-25 | 2012-08-16 | 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 |
| US11031023B2 (en) | 2017-07-03 | 2021-06-08 | Pioneer Corporation | Signal processing device, control method, program and storage medium |
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 |
| 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 |
| EP1426925B1 (en) * | 1997-12-24 | 2006-08-02 | Mitsubishi Denki Kabushiki Kaisha | Method and apparatus for speech decoding |
-
2000
- 2000-06-30 CA CA002378012A patent/CA2378012A1/en not_active Abandoned
- 2000-06-30 AU AU60636/00A patent/AU6063600A/en not_active Abandoned
- 2000-06-30 JP JP2001508667A patent/JP2003504669A/ja active Pending
- 2000-06-30 AU AU62033/00A patent/AU6203300A/en not_active Abandoned
- 2000-06-30 CA CA002378035A patent/CA2378035A1/en not_active Abandoned
- 2000-06-30 EP EP00948555A patent/EP1190495A1/en not_active Withdrawn
- 2000-06-30 JP JP2001508064A patent/JP2003503760A/ja active Pending
- 2000-06-30 JP JP2001508063A patent/JP2003533902A/ja active Pending
- 2000-06-30 WO PCT/US2000/018293 patent/WO2001003317A1/en not_active Application Discontinuation
- 2000-06-30 EP EP00946954A patent/EP1208413A2/en active Pending
- 2000-06-30 CA CA002378062A patent/CA2378062A1/en not_active Abandoned
- 2000-06-30 AU AU60671/00A patent/AU6067100A/en not_active Abandoned
- 2000-06-30 EP EP00946994A patent/EP1190494A1/en not_active Withdrawn
- 2000-06-30 WO PCT/US2000/018165 patent/WO2001002929A2/en not_active Application Discontinuation
- 2000-06-30 WO PCT/US2000/018104 patent/WO2001003316A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| EP1208413A2 (en) | 2002-05-29 |
| CA2378062A1 (en) | 2001-01-11 |
| CA2378035A1 (en) | 2001-01-11 |
| WO2001002929A3 (en) | 2001-07-19 |
| AU6203300A (en) | 2001-01-22 |
| AU6063600A (en) | 2001-01-22 |
| WO2001003317A1 (en) | 2001-01-11 |
| WO2001003316A1 (en) | 2001-01-11 |
| EP1190494A1 (en) | 2002-03-27 |
| EP1190495A1 (en) | 2002-03-27 |
| WO2001002929A2 (en) | 2001-01-11 |
| JP2003533902A (ja) | 2003-11-11 |
| JP2003504669A (ja) | 2003-02-04 |
| AU6067100A (en) | 2001-01-22 |
| JP2003503760A (ja) | 2003-01-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |