EP0209894A3 - Verfahren zur Unterdrückung der Rückkopplung in elektroakustischen Anlagen sowie Vorrichtung zur Durchführung des Verfahrens - Google Patents

Verfahren zur Unterdrückung der Rückkopplung in elektroakustischen Anlagen sowie Vorrichtung zur Durchführung des Verfahrens Download PDF

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Publication number
EP0209894A3
EP0209894A3 EP86110117A EP86110117A EP0209894A3 EP 0209894 A3 EP0209894 A3 EP 0209894A3 EP 86110117 A EP86110117 A EP 86110117A EP 86110117 A EP86110117 A EP 86110117A EP 0209894 A3 EP0209894 A3 EP 0209894A3
Authority
EP
European Patent Office
Prior art keywords
feedback
electroacoustic
installations
arrangement
carrying
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Withdrawn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
EP86110117A
Other languages
English (en)
French (fr)
Other versions
EP0209894A2 (de
Inventor
Dirk Schmidt-Enzmann
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0209894A2 publication Critical patent/EP0209894A2/de
Publication of EP0209894A3 publication Critical patent/EP0209894A3/de
Withdrawn legal-status Critical Current

Links

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)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Abstract

Ein Verfahren und eine Vorrichtung zur Unterdrückung von Rückkopplungserscheinungen, die auftreten, wenn Mikrofone (1) in der Nähe von Lautsprechern (8) angeordnet sind. Die Rückkopplungserscheinungen werden dadurch unterdrückt, daß das Mikrofonausgangssignal in zwei Kanäle (3, 4) gegeben wird, die Signale gegeneinander um vorzu­ gsweise 180° versetzt und in unterschiedlicher Stärke wie vereinigt den Lautsprechern (8) zugeführt werden. Durch Regelung der Lautstärke des schwächeren Signals kann die Rückkopplungsneigung ohne Beeinträchtigung der Sprach- oder Musikübertragung vermindert werden.
EP86110117A 1985-07-25 1986-07-23 Verfahren zur Unterdrückung der Rückkopplung in elektroakustischen Anlagen sowie Vorrichtung zur Durchführung des Verfahrens Withdrawn EP0209894A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853526591 DE3526591A1 (de) 1985-07-25 1985-07-25 Verfahren zur unterdrueckung der rueckkopplung in elektroakustischen anlagen
DE3526591 1985-07-25

Publications (2)

Publication Number Publication Date
EP0209894A2 EP0209894A2 (de) 1987-01-28
EP0209894A3 true EP0209894A3 (de) 1988-01-13

Family

ID=6276718

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110117A Withdrawn EP0209894A3 (de) 1985-07-25 1986-07-23 Verfahren zur Unterdrückung der Rückkopplung in elektroakustischen Anlagen sowie Vorrichtung zur Durchführung des Verfahrens

Country Status (5)

Country Link
EP (1) EP0209894A3 (de)
JP (1) JPS6271396A (de)
DE (1) DE3526591A1 (de)
DK (1) DK352886A (de)
ES (1) ES2000559A6 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4879749A (en) * 1986-06-26 1989-11-07 Audimax, Inc. Host controller for programmable digital hearing aid system
DK159357C (da) * 1988-03-18 1991-03-04 Oticon As Hoereapparat, navnlig til anbringelse i oeret
FR2630611A1 (fr) * 1988-04-22 1989-10-27 Bistagne Isabelle Procedes et dispositifs pour eviter les sifflements dus a des oscillations entretenues dans une boucle electro-acoustique
US5091952A (en) * 1988-11-10 1992-02-25 Wisconsin Alumni Research Foundation Feedback suppression in digital signal processing hearing aids
JPH0761190B2 (ja) * 1990-01-16 1995-06-28 パイオニア株式会社 ハウリング防止機能を備えた音響装置
FR2702118B1 (fr) * 1993-02-23 1995-05-05 Gregoire Le Tourneur Dispositif multicapteurs de prise de son et de traitement du signal associé.
US7945057B2 (en) 2005-02-25 2011-05-17 Ferdos Innovations LLC Procedure and device for linearizing the characteristic curve of a vibration signal transducer such as a microphone
DE102010044917B4 (de) 2010-09-09 2015-01-08 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Verfahren zur Vermeidung akustischer Rückkopplungen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3105877A (en) * 1960-09-12 1963-10-01 Itt Circuit for canceling oscillating in public address systems
US4064462A (en) * 1976-12-29 1977-12-20 Dukane Corporation Acoustic feedback peak elimination unit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU169185B (de) * 1974-06-05 1976-10-28
HU172630B (hu) * 1976-09-14 1978-11-28 Elektroakusztikai Gyar Sistema ozvuchenija s malen'koj sklonnost'ju k vozbuzhdeniju
DE2738339A1 (de) * 1977-08-25 1979-03-01 Bosch Gmbh Robert Hoergeraeteverstaerker
DE2807452A1 (de) * 1978-02-22 1979-08-23 Uwe Zink Rueckkopplungsausschalter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3105877A (en) * 1960-09-12 1963-10-01 Itt Circuit for canceling oscillating in public address systems
US4064462A (en) * 1976-12-29 1977-12-20 Dukane Corporation Acoustic feedback peak elimination unit

Also Published As

Publication number Publication date
DK352886A (da) 1987-01-26
JPS6271396A (ja) 1987-04-02
DK352886D0 (da) 1986-07-24
EP0209894A2 (de) 1987-01-28
ES2000559A6 (es) 1988-03-01
DE3526591A1 (de) 1987-01-29

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