EP1238479A4 - Method and apparatus for suppressing acoustic background noise in a communication system - Google Patents

Method and apparatus for suppressing acoustic background noise in a communication system

Info

Publication number: EP1238479A4
Authority: EP; European Patent Office
Prior art keywords: communication system; background noise; acoustic background; suppressing acoustic; suppressing
Prior art date: 1999-12-03
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn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)

French (fr)

Other versions

EP1238479A1 (en

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.)

1999-12-03

Filing date

2000-11-30

Publication date

2005-07-27

2000-11-30 Application filed by Motorola Inc filed Critical Motorola Inc

2002-09-11 Publication of EP1238479A1 publication Critical patent/EP1238479A1/en

2005-07-27 Publication of EP1238479A4 publication Critical patent/EP1238479A4/en

Status Withdrawn legal-status Critical Current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1999-12-03 2000-11-30 Method and apparatus for suppressing acoustic background noise in a communication system Withdrawn EP1238479A4 (en)

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 (en)	1999-12-03	2000-11-30	Method and apparatus for suppressing acoustic background noise in a communication system

Publications (2)

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

Family

ID=26864619

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP00980890A Withdrawn EP1238479A4 (en)	1999-12-03	2000-11-30	Method and apparatus for suppressing acoustic background noise in a communication system

Country Status (5)

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

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
US4628529A (en) *	1985-07-01	1986-12-09	Motorola, Inc.	Noise suppression system
US4630305A (en) *	1985-07-01	1986-12-16	Motorola, Inc.	Automatic gain selector for a noise suppression system
FI92535C (en) *	1992-02-14	1994-11-25	Nokia Mobile Phones Ltd	Noise reduction system for speech signals
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

2000
- 2000-11-30 BR BR0016127-6A patent/BR0016127A/en not_active IP Right Cessation
- 2000-11-30 WO PCT/US2000/032610 patent/WO2001041334A1/en not_active Application Discontinuation
- 2000-11-30 JP JP2001542485A patent/JP2003517761A/en active Pending
- 2000-11-30 EP EP00980890A patent/EP1238479A4/en not_active Withdrawn
- 2000-11-30 KR KR1020027007102A patent/KR20020056957A/en not_active Application Discontinuation

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
EP1238479A1 (en)	2002-09-11
WO2001041334A1 (en)	2001-06-07
JP2003517761A (en)	2003-05-27
BR0016127A (en)	2002-08-06
KR20020056957A (en)	2002-07-10

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Legal Events

Date	Code	Title	Description
2002-07-26	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
2002-09-11	17P	Request for examination filed	Effective date: 20020703
2002-09-11	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
2005-06-10	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN
2005-07-27	18W	Application withdrawn	Effective date: 20050606
2005-07-27	A4	Supplementary search report drawn up and despatched	Effective date: 20050613
2005-07-27	RIC1	Information provided on ipc code assigned before grant	Ipc: 7G 10L 21/02 A Ipc: 7H 04B 15/00 B
2023-06-28	P01	Opt-out of the competence of the unified patent court (upc) registered	Effective date: 20230520