EP1793645A3 - Akustische Rückkopplungsunterdrückung für Audioamplifikationssysteme - Google Patents

Akustische Rückkopplungsunterdrückung für Audioamplifikationssysteme Download PDF

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Publication number
EP1793645A3
EP1793645A3 EP06251486A EP06251486A EP1793645A3 EP 1793645 A3 EP1793645 A3 EP 1793645A3 EP 06251486 A EP06251486 A EP 06251486A EP 06251486 A EP06251486 A EP 06251486A EP 1793645 A3 EP1793645 A3 EP 1793645A3
Authority
EP
European Patent Office
Prior art keywords
frequency
feedback suppression
audio amplification
amplification systems
howling
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Withdrawn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
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.)
Filing date
Publication date
Application filed by GPE International Ltd filed Critical GPE International Ltd
Publication of EP1793645A2 publication Critical patent/EP1793645A2/de
Publication of EP1793645A3 publication Critical patent/EP1793645A3/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/02—Circuits for transducers, loudspeakers or microphones 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
EP3975587A1 (de) * 2009-02-03 2022-03-30 Cochlear Limited Tonprozessor und system mit verbessertem hüllkurvencodiertem ton
JP6669176B2 (ja) * 2015-12-02 2020-03-18 株式会社ソシオネクスト 信号処理装置および信号処理方法
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
WO1991020134A1 (en) 1990-06-13 1991-12-26 Sabine Musical Manufacturing Company, Inc. Method and apparatus for adaptive audio resonant frequency filtering
DK0930801T3 (da) 1998-01-14 2009-02-23 Bernafon Ag Kredslöb og fremgangsmåde til adaptiv undertrykkelse af akustisk tilbagekobling
FI20012313A (fi) * 2001-11-26 2003-05-27 Genelec Oy Menetelmä matalataajuista ääntä muokkaavan modaalisen ekvalisaattorin suunnittelemiseksi

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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