SE7714625L - Kopplingsanordning for att hindra aterkoppling - Google Patents

Kopplingsanordning for att hindra aterkoppling

Info

Publication number
SE7714625L
SE7714625L SE7714625A SE7714625A SE7714625L SE 7714625 L SE7714625 L SE 7714625L SE 7714625 A SE7714625 A SE 7714625A SE 7714625 A SE7714625 A SE 7714625A SE 7714625 L SE7714625 L SE 7714625L
Authority
SE
Sweden
Prior art keywords
counter
coupling
prevent
feedback
attenuating
Prior art date
Application number
SE7714625A
Other languages
Unknown language ( )
English (en)
Swedish (sv)
Inventor
J Brosow
Original Assignee
Dasy Int Sa
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 Dasy Int Sa filed Critical Dasy Int Sa
Publication of SE7714625L publication Critical patent/SE7714625L/

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

  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Amplifiers (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Telephone Function (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Mechanical Operated Clutches (AREA)
SE7714625A 1976-12-27 1977-12-22 Kopplingsanordning for att hindra aterkoppling SE7714625L (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2659028A DE2659028C3 (de) 1976-12-27 1976-12-27 Schaltungsanordnung zum Verhindern von Rückkopplungen

Publications (1)

Publication Number Publication Date
SE7714625L true SE7714625L (sv) 1978-06-28

Family

ID=5996757

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7714625A SE7714625L (sv) 1976-12-27 1977-12-22 Kopplingsanordning for att hindra aterkoppling

Country Status (20)

Country Link
US (1) US4165445A (fr)
JP (1) JPS5382202A (fr)
AT (1) AT352808B (fr)
BE (1) BE862083A (fr)
CA (1) CA1096523A (fr)
CH (1) CH627602A5 (fr)
DE (1) DE2659028C3 (fr)
DK (1) DK145030C (fr)
ES (1) ES466019A1 (fr)
FI (1) FI773579A7 (fr)
FR (1) FR2375786A1 (fr)
GB (1) GB1552089A (fr)
GR (1) GR66081B (fr)
IE (1) IE45954B1 (fr)
IT (1) IT1117011B (fr)
LU (1) LU78771A1 (fr)
NL (1) NL7713448A (fr)
NO (1) NO143777C (fr)
PT (1) PT67379B (fr)
SE (1) SE7714625L (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2952122A1 (de) * 1979-12-22 1981-06-25 Deutsche Itt Industries Gmbh, 7800 Freiburg Schaltungsanordnung fuer sprachgesteuerte freisprechgeraete
JPS5797262A (en) * 1980-12-09 1982-06-16 Nippon Telegr & Teleph Corp <Ntt> Loud speaker telephone set system
GB2137049B (en) * 1983-03-15 1986-05-14 Standard Telephones Cables Ltd Handsfree telephone
US4975963A (en) * 1983-08-01 1990-12-04 Zvie Liberman Muting circuit
GB2174578B (en) * 1985-05-04 1988-11-09 Stc Plc Loud speaking telephone
EP0486679B1 (fr) * 1990-06-13 1996-04-03 Sabine Musical Manufacturing Company, Inc. Procede et appareil de filtrage adaptatif de frequence de resonance audio
US5206913A (en) * 1991-02-15 1993-04-27 Lectrosonics, Inc. Method and apparatus for logic controlled microphone equalization
DE4130045A1 (de) * 1991-09-10 1993-03-18 Standard Elektrik Lorenz Ag Schaltungsanordnung zur dynamiksteuerung eines sprachendgeraetes
JP3235925B2 (ja) * 1993-11-19 2001-12-04 松下電器産業株式会社 ハウリング抑制装置
JP3454005B2 (ja) * 1996-04-03 2003-10-06 松下電器産業株式会社 スピーカ装置および音響再生装置
US6584204B1 (en) 1997-12-11 2003-06-24 The Regents Of The University Of California Loudspeaker system with feedback control for improved bandwidth and distortion reduction
US7613529B1 (en) * 2000-09-09 2009-11-03 Harman International Industries, Limited System for eliminating acoustic feedback
CN112840670B (zh) * 2018-09-07 2022-11-08 杜比实验室特许公司 媒体补偿直通装置中的动态环境叠加不稳定性检测及抑制

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296373A (en) * 1962-04-30 1967-01-03 Tdk Electronics Co Ltd Automatic sound volume controller
US3934085A (en) * 1973-03-28 1976-01-20 Television Research Limited Audio amplifier systems
FR2255762B1 (fr) * 1973-12-21 1976-07-23 Ibm France
HU169185B (fr) * 1974-06-05 1976-10-28
CA996692A (en) * 1974-12-12 1976-09-07 Russell W. Brown Digital control of a loudspeaking telephone system

Also Published As

Publication number Publication date
NL7713448A (nl) 1978-06-29
IT1117011B (it) 1986-02-10
FR2375786A1 (fr) 1978-07-21
FI773579A7 (fi) 1978-06-28
BE862083A (fr) 1978-04-14
DK145030B (da) 1982-08-02
AT352808B (de) 1979-10-10
DK579677A (da) 1978-06-28
GB1552089A (en) 1979-09-05
PT67379B (de) 1979-05-18
ATA883177A (de) 1979-03-15
LU78771A1 (fr) 1978-04-17
IE45954B1 (en) 1983-01-12
GR66081B (fr) 1981-01-15
NO143777B (no) 1980-12-29
CA1096523A (fr) 1981-02-24
JPS5382202A (en) 1978-07-20
NO143777C (no) 1981-04-08
DE2659028B2 (de) 1978-10-05
US4165445A (en) 1979-08-21
ES466019A1 (es) 1978-10-01
DK145030C (da) 1983-01-03
DE2659028C3 (de) 1979-05-31
CH627602A5 (de) 1982-01-15
IE45954L (en) 1978-06-27
NO774413L (no) 1978-06-28
PT67379A (de) 1978-01-01
DE2659028A1 (de) 1978-06-29

Similar Documents

Publication Publication Date Title
SE7714625L (sv) Kopplingsanordning for att hindra aterkoppling
ATE151553T1 (de) Aktives akustisches dämpfungssystem mit gesamtmodellierung
NL7608417A (nl) Geluiddempingsinrichting.
FR2455839A1 (fr) Procede et dispositif de protection d&#39;un transducteur electromecanique
JPS6028310A (ja) 電子ボリユ−ム
FR1373805A (fr) Dispositif de transmission élastique anti-vibratoire
CA2110763A1 (fr) Procedes servant a proteger contre les bruits exterieurs un volume donne, de preference dispose a l&#39;interieur d&#39;une piece, et dispositifs connexes
FR2435762A1 (fr) Dispositif sonore d&#39;alarme a detection acoustique
IT1272056B (it) Circuito per conversazione telefonica a mani libere
DK84373C (da) Apparat til beskyttelse af telefonabonnentanlæg mod overspændingsbølger.
ATE275809T1 (de) Zweiwegkommunikationsgerät
KR900005734A (ko) 다이얼링 확인음 출력장치 및 이의 제어방법
NL7803946A (nl) Inrichting voor geluiddemping bij gebouwen.
ES457318A1 (es) Dispositivo de medicion acustica.
JPS561649A (en) Conference telephone equipment
SE0701101L (sv) Förfarande och anordning för dämpning av en ljudsignal
SU1564737A2 (ru) Устройство дл контрол пол рности электроакустических преобразователей
JPS5421324A (en) Electrostatic type electro-acoustic transducer
GR20580B (el) Ενισχυτης βαρυκοιας και οργανον αναμεταδοσεως ηχων τηλεφωνικης συσκευης.
CA607763A (en) Device for the transmission of sound from rooms having a high noise level
JPS51128584A (en) Supersonic detector
JPS57113647A (en) Signal concealing device
SUTHERLAND Ear protection provided by several standard Air Force devices(Tests to determine sound attenuation achieved by several Air Force ear protector devices)[Final Report, Nov. 1970- Feb. 1971]
DE2704184A1 (de) Bewegungsgesteuerter ir-annaeherungsschalter
FR1215129A (fr) Enceinte munie d&#39;un dispositif d&#39;amortissement acoustique et d&#39;une ouverture de décompression pour transducteur électro-acoustique

Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 7714625-6

Format of ref document f/p: F