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EP1238479A4 - Procede et appareil de suppression du bruit de fond acoustique dans un systeme de communications - Google Patents

Procede et appareil de suppression du bruit de fond acoustique dans un systeme de communications

Info

Publication number
EP1238479A4
EP1238479A4 EP00980890A EP00980890A EP1238479A4 EP 1238479 A4 EP1238479 A4 EP 1238479A4 EP 00980890 A EP00980890 A EP 00980890A EP 00980890 A EP00980890 A EP 00980890A EP 1238479 A4 EP1238479 A4 EP 1238479A4
Authority
EP
European Patent Office
Prior art keywords
communication system
background noise
acoustic background
suppressing acoustic
suppressing
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.)
Withdrawn
Application number
EP00980890A
Other languages
German (de)
English (en)
Other versions
EP1238479A1 (fr
Inventor
Tenkasi V Ramabadran
James P Ashley
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of EP1238479A1 publication Critical patent/EP1238479A1/fr
Publication of EP1238479A4 publication Critical patent/EP1238479A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/007—Two-channel systems in which the audio signals are in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Noise Elimination (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Transceivers (AREA)
EP00980890A 1999-12-03 2000-11-30 Procede et appareil de suppression du bruit de fond acoustique dans un systeme de communications Withdrawn EP1238479A4 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US16895599P 1999-12-03 1999-12-03
US168955P 1999-12-03
US72393900A 2000-11-28 2000-11-28
US723939 2000-11-28
PCT/US2000/032610 WO2001041334A1 (fr) 1999-12-03 2000-11-30 Procede et appareil de suppression du bruit de fond acoustique dans un systeme de communications

Publications (2)

Publication Number Publication Date
EP1238479A1 EP1238479A1 (fr) 2002-09-11
EP1238479A4 true EP1238479A4 (fr) 2005-07-27

Family

ID=26864619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00980890A Withdrawn EP1238479A4 (fr) 1999-12-03 2000-11-30 Procede et appareil de suppression du bruit de fond acoustique dans un systeme de communications

Country Status (5)

Country Link
EP (1) EP1238479A4 (fr)
JP (1) JP2003517761A (fr)
KR (1) KR20020056957A (fr)
BR (1) BR0016127A (fr)
WO (1) WO2001041334A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5706395A (en) * 1995-04-19 1998-01-06 Texas Instruments Incorporated Adaptive weiner filtering using a dynamic suppression factor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5744338A (en) * 1980-08-29 1982-03-12 Victor Co Of Japan Ltd Noise reduction device
US4630305A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic gain selector for a noise suppression system
US4628529A (en) * 1985-07-01 1986-12-09 Motorola, Inc. Noise suppression system
FI92535C (fi) * 1992-02-14 1994-11-25 Nokia Mobile Phones Ltd Kohinan vaimennusjärjestelmä puhesignaaleille
US5432859A (en) * 1993-02-23 1995-07-11 Novatel Communications Ltd. Noise-reduction system
US5544250A (en) * 1994-07-18 1996-08-06 Motorola Noise suppression system and method therefor
US5659622A (en) * 1995-11-13 1997-08-19 Motorola, Inc. Method and apparatus for suppressing noise in a communication system
US6104993A (en) * 1997-02-26 2000-08-15 Motorola, Inc. Apparatus and method for rate determination in a communication system
US6088668A (en) * 1998-06-22 2000-07-11 D.S.P.C. Technologies Ltd. Noise suppressor having weighted gain smoothing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5706395A (en) * 1995-04-19 1998-01-06 Texas Instruments Incorporated Adaptive weiner filtering using a dynamic suppression factor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO0141334A1 *

Also Published As

Publication number Publication date
JP2003517761A (ja) 2003-05-27
KR20020056957A (ko) 2002-07-10
WO2001041334A1 (fr) 2001-06-07
BR0016127A (pt) 2002-08-06
EP1238479A1 (fr) 2002-09-11

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Legal Events

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Effective date: 20050613

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Ipc: 7G 10L 21/02 A

Ipc: 7H 04B 15/00 B

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230520