DK77888A - Kredsloeb til undertrykkelse af svingninger - Google Patents

Kredsloeb til undertrykkelse af svingninger

Info

Publication number
DK77888A
DK77888A DK077888A DK77888A DK77888A DK 77888 A DK77888 A DK 77888A DK 077888 A DK077888 A DK 077888A DK 77888 A DK77888 A DK 77888A DK 77888 A DK77888 A DK 77888A
Authority
DK
Denmark
Prior art keywords
circuit
oscillation
oscillations
frequency
search
Prior art date
Application number
DK077888A
Other languages
Danish (da)
English (en)
Other versions
DK77888D0 (da
Inventor
Juergen Wagner
Original Assignee
Siemens Ag
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6321173&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK77888(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of DK77888D0 publication Critical patent/DK77888D0/da
Publication of DK77888A publication Critical patent/DK77888A/da

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
    • H04R25/00—Electric hearing aids
    • H04R25/45—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
    • H04R25/453—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback electronically
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Electric hearing aids
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing

Landscapes

  • Acoustics & Sound (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Coating With Molten Metal (AREA)
  • Gyroscopes (AREA)
  • Amplifiers (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
DK077888A 1987-02-17 1988-02-16 Kredsloeb til undertrykkelse af svingninger DK77888A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3704999 1987-02-17

Publications (2)

Publication Number Publication Date
DK77888D0 DK77888D0 (da) 1988-02-16
DK77888A true DK77888A (da) 1988-08-18

Family

ID=6321173

Family Applications (1)

Application Number Title Priority Date Filing Date
DK077888A DK77888A (da) 1987-02-17 1988-02-16 Kredsloeb til undertrykkelse af svingninger

Country Status (5)

Country Link
US (1) US4815140A (de)
EP (1) EP0280907B1 (de)
AT (1) ATE68310T1 (de)
DE (1) DE3865319D1 (de)
DK (1) DK77888A (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4985925A (en) * 1988-06-24 1991-01-15 Sensor Electronics, Inc. Active noise reduction system
US5091952A (en) * 1988-11-10 1992-02-25 Wisconsin Alumni Research Foundation Feedback suppression in digital signal processing hearing aids
US6563931B1 (en) 1992-07-29 2003-05-13 K/S Himpp Auditory prosthesis for adaptively filtering selected auditory component by user activation and method for doing same
DE4229912A1 (de) * 1992-09-08 1994-03-10 Sel Alcatel Ag Verfahren zum Verbessern der Übertragungseigenschaften einer elektroakustischen Anlage
US5412734A (en) * 1993-09-13 1995-05-02 Thomasson; Samuel L. Apparatus and method for reducing acoustic feedback
US6137888A (en) * 1997-06-02 2000-10-24 Nortel Networks Corporation EM interference canceller in an audio amplifier
AU2004201374B2 (en) * 2004-04-01 2010-12-23 Phonak Ag Audio amplification apparatus
AU2003236382B2 (en) * 2003-08-20 2011-02-24 Phonak Ag Feedback suppression in sound signal processing using frequency transposition
US7756276B2 (en) * 2003-08-20 2010-07-13 Phonak Ag Audio amplification apparatus
EP2053876B1 (de) * 2007-10-18 2010-05-26 Siemens Medical Instruments Pte. Ltd. Hörvorrichtung mit gemeinsamem Anschluss für Schirmung und Identifikation eines Hörers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091236A (en) * 1976-09-07 1978-05-23 The University Of Akron Automatically tunable notch filter and method for suppression of acoustical feedback
NL7612358A (nl) * 1976-11-08 1978-05-10 Philips Nv Versterkerinrichting voor akoestische signalen voorzien van middelen voor het onderdrukken van ongewenste stoorsignalen.
US4079199A (en) * 1977-05-25 1978-03-14 Patronis Jr Eugene T Acoustic feedback detector and automatic gain control
US4232192A (en) * 1978-05-01 1980-11-04 Starkey Labs, Inc. Moving-average notch filter

Also Published As

Publication number Publication date
EP0280907B1 (de) 1991-10-09
US4815140A (en) 1989-03-21
EP0280907A1 (de) 1988-09-07
DE3865319D1 (de) 1991-11-14
DK77888D0 (da) 1988-02-16
ATE68310T1 (de) 1991-10-15

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Legal Events

Date Code Title Description
AHB Application shelved due to non-payment