DE60001209T2 - Kommunikation mit Tandem Sprachkodierung mit verbesserter Sprachqualität - Google Patents
Kommunikation mit Tandem Sprachkodierung mit verbesserter SprachqualitätInfo
- Publication number
- DE60001209T2 DE60001209T2 DE60001209T DE60001209T DE60001209T2 DE 60001209 T2 DE60001209 T2 DE 60001209T2 DE 60001209 T DE60001209 T DE 60001209T DE 60001209 T DE60001209 T DE 60001209T DE 60001209 T2 DE60001209 T2 DE 60001209T2
- Authority
- DE
- Germany
- Prior art keywords
- speech signal
- speech
- decoder
- adaptive filter
- modified
- 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 - Lifetime
Links
- 238000004891 communication Methods 0.000 title claims description 20
- 230000003044 adaptive effect Effects 0.000 claims description 36
- 238000001228 spectrum Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000003595 spectral effect Effects 0.000 claims 2
- 238000012545 processing Methods 0.000 description 29
- 230000008569 process Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000004044 response Effects 0.000 description 6
- 230000006872 improvement Effects 0.000 description 3
- 238000013178 mathematical model Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
-
- 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
- G10L19/26—Pre-filtering or post-filtering
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Computational Linguistics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Quality & Reliability (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephone Function (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/503,990 US7006787B1 (en) | 2000-02-14 | 2000-02-14 | Mobile to mobile digital wireless connection having enhanced voice quality |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE60001209D1 DE60001209D1 (de) | 2003-02-20 |
| DE60001209T2 true DE60001209T2 (de) | 2003-11-13 |
Family
ID=24004388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE60001209T Expired - Lifetime DE60001209T2 (de) | 2000-02-14 | 2000-08-29 | Kommunikation mit Tandem Sprachkodierung mit verbesserter Sprachqualität |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US7006787B1 (enExample) |
| EP (1) | EP1126439B1 (enExample) |
| JP (1) | JP2001272998A (enExample) |
| KR (1) | KR100444418B1 (enExample) |
| CN (1) | CN1309521A (enExample) |
| AU (1) | AU1839001A (enExample) |
| BR (1) | BR0100384A (enExample) |
| CA (1) | CA2330985A1 (enExample) |
| DE (1) | DE60001209T2 (enExample) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1504441A4 (en) * | 2002-05-13 | 2005-12-14 | Conexant Systems Inc | TRANSCODING THE VOICE IN A PACKET SWITCHED NETWORK ENVIRONMENT |
| FR2839836B1 (fr) * | 2002-05-16 | 2004-09-10 | Cit Alcatel | Terminal de telecommunication permettant de modifier la voix transmise lors d'une communication telephonique |
| DE602004014919D1 (de) | 2003-04-08 | 2008-08-21 | Nec Corp | Codeumsetzungsverfahren und einrichtung |
| KR20050044837A (ko) * | 2004-06-08 | 2005-05-13 | 삼성전자주식회사 | 디지털 방송 데이터 출력 중 통화기능을 처리하는이동통신단말기 및 그 방법 |
| KR100700595B1 (ko) | 2005-10-29 | 2007-03-28 | 엘지전자 주식회사 | 청각특성 변경을 지원하는 휴대단말기 및 그 방법 |
| ES2523456T3 (es) * | 2005-11-30 | 2014-11-26 | Telefonaktiebolaget L- M Ericsson (Publ) | Sistemas y métodos para transmisión de señales de funcionamiento sin tándem |
| US20070131653A1 (en) * | 2005-12-09 | 2007-06-14 | Ettinger Gary C | Methods and apparatus for processing a substrate |
| US20070171816A1 (en) * | 2006-01-20 | 2007-07-26 | Lucent Technologies Inc. | Method and apparatus for call reroute based upon QoS |
| US20070291648A1 (en) * | 2006-06-15 | 2007-12-20 | Lucent Technologies Inc. | VoIP voice quality remote for switch-to-switch connections |
| US9426569B2 (en) * | 2013-06-13 | 2016-08-23 | Blackberry Limited | Audio signal bandwidth to codec bandwidth analysis and response |
| EP3277016B1 (en) * | 2016-07-29 | 2019-09-11 | Rohde & Schwarz GmbH & Co. KG | Measurement system and a method |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2569322B1 (fr) * | 1984-08-17 | 1986-12-05 | Trt Telecom Radio Electr | Annuleur d'echo utilisant la modulation delta |
| US5233660A (en) * | 1991-09-10 | 1993-08-03 | At&T Bell Laboratories | Method and apparatus for low-delay celp speech coding and decoding |
| US5694519A (en) | 1992-02-18 | 1997-12-02 | Lucent Technologies, Inc. | Tunable post-filter for tandem coders |
| US5790632A (en) * | 1994-09-30 | 1998-08-04 | Qualcom Incorporated | Method and apparatus for echo canceling accounting for companding induced quantization error |
| US5903862A (en) * | 1995-01-25 | 1999-05-11 | Weaver, Jr.; Lindsay A. | Method and apparatus for detection of tandem vocoding to modify vocoder filtering |
| JPH08202399A (ja) * | 1995-01-27 | 1996-08-09 | Kyocera Corp | 復号音声の後処理方法 |
| JP3426871B2 (ja) * | 1995-09-18 | 2003-07-14 | 株式会社東芝 | 音声信号のスペクトル形状調整方法および装置 |
| JP3157116B2 (ja) * | 1996-03-29 | 2001-04-16 | 三菱電機株式会社 | 音声符号化伝送システム |
| KR100233463B1 (ko) * | 1997-03-07 | 1999-12-01 | 윤종용 | 반향제거장치 및 방법 |
| GB9706174D0 (en) * | 1997-03-25 | 1997-11-19 | Secr Defence | Recognition system |
| US5995923A (en) * | 1997-06-26 | 1999-11-30 | Nortel Networks Corporation | Method and apparatus for improving the voice quality of tandemed vocoders |
| WO1999013608A2 (en) * | 1997-09-10 | 1999-03-18 | Koninklijke Philips Electronics N.V. | A communication system and a terminal having speech encoding and decoding means |
| US6347141B1 (en) * | 1998-08-03 | 2002-02-12 | Conexant Systems, Inc. | Method of and apparatus for adaptation of an echo canceller in a system with multitasking |
| US6434235B1 (en) * | 2000-08-01 | 2002-08-13 | Lucent Technologies Inc. | Acoustic echo canceler |
-
2000
- 2000-02-14 US US09/503,990 patent/US7006787B1/en not_active Expired - Lifetime
- 2000-08-29 DE DE60001209T patent/DE60001209T2/de not_active Expired - Lifetime
- 2000-08-29 EP EP00307402A patent/EP1126439B1/en not_active Expired - Lifetime
-
2001
- 2001-01-15 CA CA002330985A patent/CA2330985A1/en not_active Abandoned
- 2001-02-07 BR BR0100384-4A patent/BR0100384A/pt not_active Application Discontinuation
- 2001-02-09 AU AU18390/01A patent/AU1839001A/en not_active Abandoned
- 2001-02-13 CN CN01102995A patent/CN1309521A/zh active Pending
- 2001-02-14 JP JP2001036934A patent/JP2001272998A/ja active Pending
- 2001-02-14 KR KR10-2001-0007241A patent/KR100444418B1/ko not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010082625A (ko) | 2001-08-30 |
| CN1309521A (zh) | 2001-08-22 |
| US7006787B1 (en) | 2006-02-28 |
| EP1126439A3 (en) | 2001-08-29 |
| JP2001272998A (ja) | 2001-10-05 |
| BR0100384A (pt) | 2001-10-30 |
| EP1126439B1 (en) | 2003-01-15 |
| KR100444418B1 (ko) | 2004-08-16 |
| AU1839001A (en) | 2001-08-16 |
| EP1126439A2 (en) | 2001-08-22 |
| CA2330985A1 (en) | 2001-08-14 |
| DE60001209D1 (de) | 2003-02-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition |