EP1793645A3 - Akustische Rückkopplungsunterdrückung für Audioamplifikationssysteme - Google Patents

Akustische Rückkopplungsunterdrückung für Audioamplifikationssysteme Download PDF

Info

Publication number: EP1793645A3
Authority: EP; European Patent Office
Prior art keywords: frequency; feedback suppression; audio amplification; amplification systems; howling
Prior art date: 2005-11-09
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn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

EP06251486A

Other languages

English (en)

French (fr)

Other versions

EP1793645A2 (de

Inventor

Yong c/o Room 203 14th Bld. Shi

Jing c/o Room 27N Biluo Xuan Sun

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.)

GPE International Ltd

Original Assignee

GPE International Ltd

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.)

2005-11-09

Filing date

2006-03-21

Publication date

2008-08-06

2006-03-21 Application filed by GPE International Ltd filed Critical GPE International Ltd

2007-06-06 Publication of EP1793645A2 publication Critical patent/EP1793645A2/de

2008-08-06 Publication of EP1793645A3 publication Critical patent/EP1793645A3/de

Status Withdrawn legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers
- H04R3/02—Circuits for transducers for preventing acoustic reaction, i.e. acoustic oscillatory feedback

Landscapes

Health & Medical Sciences (AREA)
General Health & Medical Sciences (AREA)
Otolaryngology (AREA)
Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Circuit For Audible Band Transducer (AREA)

EP06251486A 2005-11-09 2006-03-21 Akustische Rückkopplungsunterdrückung für Audioamplifikationssysteme Withdrawn EP1793645A3 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
HK05109977		2005-11-09

Publications (2)

Publication Number	Publication Date
EP1793645A2 EP1793645A2 (de)	2007-06-06
EP1793645A3 true EP1793645A3 (de)	2008-08-06

Family

ID=37836754

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP06251486A Withdrawn EP1793645A3 (de)	2005-11-09	2006-03-21	Akustische Rückkopplungsunterdrückung für Audioamplifikationssysteme

Country Status (1)

Country	Link
EP (1)	EP1793645A3 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2148526B1 (de)	2008-07-24	2020-08-19	Oticon A/S	Modifizierung von spektralem Inhalt zur robusten Rückkopplungskanalschätzung
WO2010088722A1 (en) *	2009-02-03	2010-08-12	Hearworks Pty Limited	Enhianced envelope encoded tone, sound procrssor and system
CN108293164B (zh) *	2015-12-02	2020-08-11	株式会社索思未来	信号处理装置以及信号处理方法
CN106653038A (zh) *	2016-09-09	2017-05-10	深圳来邦科技有限公司	扩声系统
CN109671445A (zh) *	2018-12-28	2019-04-23	广东美电贝尔科技集团股份有限公司	一种音频系统声音啸叫的抑制方法
CN110186546B (zh) *	2019-05-08	2020-04-14	浙江大学	基于粉红噪声的水听器灵敏度自由场宽带校准方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1998005135A1 (en) *	1996-07-26	1998-02-05	Shure Brothers Incorporated	Acoustic feedback elimination using adaptive notch filter algorithm
US6125187A (en) *	1997-10-20	2000-09-26	Sony Corporation	Howling eliminating apparatus
US20030210797A1 (en) *	2002-03-13	2003-11-13	Kreifeldt Richard A.	Audio feedback processing system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0486679B1 (de)	1990-06-13	1996-04-03	Sabine Musical Manufacturing Company, Inc.	Verfahren und einrichtung zur adaptiven filterung einer audioresonanzfrequenz
DE59814316D1 (de)	1998-01-14	2008-12-18	Bernafon Ag	Schaltung und Verfahren zur adaptiven Unterdrückung einer akustischen Rückkopplung
FI20012313A7 (fi) *	2001-11-26	2003-05-27	Genelec Oy	Menetelmä matalataajuista ääntä muokkaavan modaalisen ekvalisaattorin suunnittelemiseksi

2006
- 2006-03-21 EP EP06251486A patent/EP1793645A3/de not_active Withdrawn

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1998005135A1 (en) *	1996-07-26	1998-02-05	Shure Brothers Incorporated	Acoustic feedback elimination using adaptive notch filter algorithm
US6125187A (en) *	1997-10-20	2000-09-26	Sony Corporation	Howling eliminating apparatus
US20030210797A1 (en) *	2002-03-13	2003-11-13	Kreifeldt Richard A.	Audio feedback processing system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DOUGLAS F. ELLIOTT: "Handbook of Digital Signal Processing Engineering Applications", 1987, ACADEMIC PRESS INC, SAN DIEGO, ISBN: 0-12-237075-9, XP002485878, 1 *

Also Published As

Publication number	Publication date
EP1793645A2 (de)	2007-06-06

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Legal Events

Date	Code	Title	Description
2007-05-04	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
2007-06-06	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
2007-06-06	AX	Request for extension of the european patent	Extension state: AL BA HR MK YU
2008-07-04	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
2008-08-06	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
2008-08-06	AX	Request for extension of the european patent	Extension state: AL BA HR MK YU
2009-03-04	17P	Request for examination filed	Effective date: 20090112
2009-03-25	17Q	First examination report despatched	Effective date: 20090223
2009-04-15	AKX	Designation fees paid	Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
2011-11-18	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN
2011-12-21	18D	Application deemed to be withdrawn	Effective date: 20110629