SE9803698L - Metoder och anordningar i ett telekommunikationssystem - Google Patents
Metoder och anordningar i ett telekommunikationssystemInfo
- Publication number
- SE9803698L SE9803698L SE9803698A SE9803698A SE9803698L SE 9803698 L SE9803698 L SE 9803698L SE 9803698 A SE9803698 A SE 9803698A SE 9803698 A SE9803698 A SE 9803698A SE 9803698 L SE9803698 L SE 9803698L
- Authority
- SE
- Sweden
- Prior art keywords
- incoming signal
- low frequency
- background noise
- noise
- encoding
- Prior art date
Links
- 230000007774 longterm Effects 0.000 abstract 1
Classifications
-
- 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
- G10L19/012—Comfort noise or silence coding
Landscapes
- Engineering & Computer Science (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Mobile Radio Communication Systems (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9803698A SE9803698L (sv) | 1998-10-26 | 1998-10-26 | Metoder och anordningar i ett telekommunikationssystem |
AU14226/00A AU1422600A (en) | 1998-10-26 | 1999-10-08 | Method and arrangement for providing comfort noise in communications systems |
PCT/SE1999/001808 WO2000025301A1 (en) | 1998-10-26 | 1999-10-08 | Method and arrangement for providing comfort noise in communications systems |
US09/425,799 US6424942B1 (en) | 1998-10-26 | 1999-10-25 | Methods and arrangements in a telecommunications system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9803698A SE9803698L (sv) | 1998-10-26 | 1998-10-26 | Metoder och anordningar i ett telekommunikationssystem |
Publications (2)
Publication Number | Publication Date |
---|---|
SE9803698D0 SE9803698D0 (en) | 1998-10-26 |
SE9803698L true SE9803698L (sv) | 2000-04-27 |
Family
ID=20413118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9803698A SE9803698L (sv) | 1998-10-26 | 1998-10-26 | Metoder och anordningar i ett telekommunikationssystem |
Country Status (4)
Country | Link |
---|---|
US (1) | US6424942B1 (sv) |
AU (1) | AU1422600A (sv) |
SE (1) | SE9803698L (sv) |
WO (1) | WO2000025301A1 (sv) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070110042A1 (en) * | 1999-12-09 | 2007-05-17 | Henry Li | Voice and data exchange over a packet based network |
EP1186100A2 (en) * | 2000-01-07 | 2002-03-13 | Koninklijke Philips Electronics N.V. | Generating coefficients for a prediction filter in an encoder |
US7181027B1 (en) * | 2000-05-17 | 2007-02-20 | Cisco Technology, Inc. | Noise suppression in communications systems |
US7031916B2 (en) * | 2001-06-01 | 2006-04-18 | Texas Instruments Incorporated | Method for converging a G.729 Annex B compliant voice activity detection circuit |
GB2380644A (en) * | 2001-06-07 | 2003-04-09 | Canon Kk | Speech detection |
US6832195B2 (en) * | 2002-07-03 | 2004-12-14 | Sony Ericsson Mobile Communications Ab | System and method for robustly detecting voice and DTX modes |
EP1414024A1 (en) * | 2002-10-21 | 2004-04-28 | Alcatel | Realistic comfort noise for voice calls over packet networks |
US7243065B2 (en) * | 2003-04-08 | 2007-07-10 | Freescale Semiconductor, Inc | Low-complexity comfort noise generator |
JP4318119B2 (ja) * | 2004-06-18 | 2009-08-19 | 国立大学法人京都大学 | 音響信号処理方法、音響信号処理装置、音響信号処理システム及びコンピュータプログラム |
US7742914B2 (en) * | 2005-03-07 | 2010-06-22 | Daniel A. Kosek | Audio spectral noise reduction method and apparatus |
US20080120098A1 (en) * | 2006-11-21 | 2008-05-22 | Nokia Corporation | Complexity Adjustment for a Signal Encoder |
CN101246688B (zh) * | 2007-02-14 | 2011-01-12 | 华为技术有限公司 | 一种对背景噪声信号进行编解码的方法、系统和装置 |
CN101335000B (zh) * | 2008-03-26 | 2010-04-21 | 华为技术有限公司 | 编码的方法及装置 |
KR101239318B1 (ko) * | 2008-12-22 | 2013-03-05 | 한국전자통신연구원 | 음질 향상 장치와 음성 인식 시스템 및 방법 |
CN105336339B (zh) | 2014-06-03 | 2019-05-03 | 华为技术有限公司 | 一种语音频信号的处理方法和装置 |
EP2980790A1 (en) * | 2014-07-28 | 2016-02-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for comfort noise generation mode selection |
US11120821B2 (en) * | 2016-08-08 | 2021-09-14 | Plantronics, Inc. | Vowel sensing voice activity detector |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3989897A (en) * | 1974-10-25 | 1976-11-02 | Carver R W | Method and apparatus for reducing noise content in audio signals |
SU1351560A1 (ru) | 1984-02-29 | 1987-11-15 | Всесоюзный Научно-Исследовательский Институт Молочной Промышленности | Кисло-молочный продукт "бифилин |
US5235669A (en) | 1990-06-29 | 1993-08-10 | At&T Laboratories | Low-delay code-excited linear-predictive coding of wideband speech at 32 kbits/sec |
US5630016A (en) | 1992-05-28 | 1997-05-13 | Hughes Electronics | Comfort noise generation for digital communication systems |
DE4330143A1 (de) | 1993-09-07 | 1995-03-16 | Philips Patentverwaltung | Anordnung zur Siganlverarbeitung akustischer Eingangssignale |
US5487087A (en) | 1994-05-17 | 1996-01-23 | Texas Instruments Incorporated | Signal quantizer with reduced output fluctuation |
US5794199A (en) * | 1996-01-29 | 1998-08-11 | Texas Instruments Incorporated | Method and system for improved discontinuous speech transmission |
US5903819A (en) * | 1996-03-13 | 1999-05-11 | Ericsson Inc. | Noise suppressor circuit and associated method for suppressing periodic interference component portions of a communication signal |
US5960389A (en) | 1996-11-15 | 1999-09-28 | Nokia Mobile Phones Limited | Methods for generating comfort noise during discontinuous transmission |
US6163608A (en) * | 1998-01-09 | 2000-12-19 | Ericsson Inc. | Methods and apparatus for providing comfort noise in communications systems |
US6173257B1 (en) * | 1998-08-24 | 2001-01-09 | Conexant Systems, Inc | Completed fixed codebook for speech encoder |
US6188980B1 (en) * | 1998-08-24 | 2001-02-13 | Conexant Systems, Inc. | Synchronized encoder-decoder frame concealment using speech coding parameters including line spectral frequencies and filter coefficients |
US6330533B2 (en) * | 1998-08-24 | 2001-12-11 | Conexant Systems, Inc. | Speech encoder adaptively applying pitch preprocessing with warping of target signal |
US6260010B1 (en) * | 1998-08-24 | 2001-07-10 | Conexant Systems, Inc. | Speech encoder using gain normalization that combines open and closed loop gains |
US6104992A (en) * | 1998-08-24 | 2000-08-15 | Conexant Systems, Inc. | Adaptive gain reduction to produce fixed codebook target signal |
-
1998
- 1998-10-26 SE SE9803698A patent/SE9803698L/sv not_active Application Discontinuation
-
1999
- 1999-10-08 AU AU14226/00A patent/AU1422600A/en not_active Abandoned
- 1999-10-08 WO PCT/SE1999/001808 patent/WO2000025301A1/en active Application Filing
- 1999-10-25 US US09/425,799 patent/US6424942B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
SE9803698D0 (en) | 1998-10-26 |
WO2000025301A1 (en) | 2000-05-04 |
US6424942B1 (en) | 2002-07-23 |
AU1422600A (en) | 2000-05-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |