DK145030C - Kredsloeb til forhindring af tilbagekoblinger - Google Patents

Kredsloeb til forhindring af tilbagekoblinger

Info

Publication number
DK145030C
DK145030C DK579677A DK579677A DK145030C DK 145030 C DK145030 C DK 145030C DK 579677 A DK579677 A DK 579677A DK 579677 A DK579677 A DK 579677A DK 145030 C DK145030 C DK 145030C
Authority
DK
Denmark
Prior art keywords
circuit
prevent background
prevent
background
Prior art date
Application number
DK579677A
Other languages
English (en)
Other versions
DK579677A (da
DK145030B (da
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 DK579677A publication Critical patent/DK579677A/da
Publication of DK145030B publication Critical patent/DK145030B/da
Application granted granted Critical
Publication of DK145030C publication Critical patent/DK145030C/da

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

  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • General Health & Medical Sciences (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Amplifiers (AREA)
  • Mechanical Operated Clutches (AREA)
  • Telephone Function (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
DK579677A 1976-12-27 1977-12-23 Kredsloeb til forhindring af tilbagekoblinger DK145030C (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2659028 1976-12-27
DE2659028A DE2659028C3 (de) 1976-12-27 1976-12-27 Schaltungsanordnung zum Verhindern von Rückkopplungen

Publications (3)

Publication Number Publication Date
DK579677A DK579677A (da) 1978-06-28
DK145030B DK145030B (da) 1982-08-02
DK145030C true DK145030C (da) 1983-01-03

Family

ID=5996757

Family Applications (1)

Application Number Title Priority Date Filing Date
DK579677A DK145030C (da) 1976-12-27 1977-12-23 Kredsloeb til forhindring af tilbagekoblinger

Country Status (20)

Country Link
US (1) US4165445A (da)
JP (1) JPS5382202A (da)
AT (1) AT352808B (da)
BE (1) BE862083A (da)
CA (1) CA1096523A (da)
CH (1) CH627602A5 (da)
DE (1) DE2659028C3 (da)
DK (1) DK145030C (da)
ES (1) ES466019A1 (da)
FI (1) FI773579A (da)
FR (1) FR2375786A1 (da)
GB (1) GB1552089A (da)
GR (1) GR66081B (da)
IE (1) IE45954B1 (da)
IT (1) IT1117011B (da)
LU (1) LU78771A1 (da)
NL (1) NL7713448A (da)
NO (1) NO143777C (da)
PT (1) PT67379B (da)
SE (1) SE7714625L (da)

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
CA2066624C (en) * 1990-06-13 1999-02-16 Doran M. Oster Method and apparatus for adaptive audio resonant frequency filtering
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
US11509987B2 (en) * 2018-09-07 2022-11-22 Dolby Laboratories Licensing Corporation Dynamic environmental overlay instability detection and suppression in media-compensated pass-through devices

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 (da) * 1973-12-21 1976-07-23 Ibm France
HU169185B (da) * 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
GB1552089A (en) 1979-09-05
IE45954L (en) 1978-06-27
FR2375786A1 (fr) 1978-07-21
US4165445A (en) 1979-08-21
JPS5382202A (en) 1978-07-20
PT67379A (de) 1978-01-01
DE2659028B2 (de) 1978-10-05
GR66081B (da) 1981-01-15
CA1096523A (en) 1981-02-24
AT352808B (de) 1979-10-10
DE2659028C3 (de) 1979-05-31
IT1117011B (it) 1986-02-10
DK579677A (da) 1978-06-28
SE7714625L (sv) 1978-06-28
NO774413L (no) 1978-06-28
IE45954B1 (en) 1983-01-12
CH627602A5 (de) 1982-01-15
DE2659028A1 (de) 1978-06-29
BE862083A (fr) 1978-04-14
DK145030B (da) 1982-08-02
ATA883177A (de) 1979-03-15
LU78771A1 (da) 1978-04-17
NO143777B (no) 1980-12-29
FI773579A (fi) 1978-06-28
ES466019A1 (es) 1978-10-01
NL7713448A (nl) 1978-06-29
PT67379B (de) 1979-05-18
NO143777C (no) 1981-04-08

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