DK169012B1 - Kredsløb til genkendelse af svingninger - Google Patents

Kredsløb til genkendelse af svingninger Download PDF

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Publication number
DK169012B1
DK169012B1 DK077988A DK77988A DK169012B1 DK 169012 B1 DK169012 B1 DK 169012B1 DK 077988 A DK077988 A DK 077988A DK 77988 A DK77988 A DK 77988A DK 169012 B1 DK169012 B1 DK 169012B1
Authority
DK
Denmark
Prior art keywords
comparator
signal
signals
threshold value
circuit
Prior art date
Application number
DK077988A
Other languages
Danish (da)
English (en)
Other versions
DK77988D0 (da
DK77988A (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
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of DK77988D0 publication Critical patent/DK77988D0/da
Publication of DK77988A publication Critical patent/DK77988A/da
Application granted granted Critical
Publication of DK169012B1 publication Critical patent/DK169012B1/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
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • 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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • 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

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Glass Compositions (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Amplifiers (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Filters And Equalizers (AREA)
  • Analogue/Digital Conversion (AREA)
DK077988A 1987-02-17 1988-02-16 Kredsløb til genkendelse af svingninger DK169012B1 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3704998 1987-02-17
DE3704998 1987-02-17

Publications (3)

Publication Number Publication Date
DK77988D0 DK77988D0 (da) 1988-02-16
DK77988A DK77988A (da) 1988-08-18
DK169012B1 true DK169012B1 (da) 1994-07-25

Family

ID=6321172

Family Applications (1)

Application Number Title Priority Date Filing Date
DK077988A DK169012B1 (da) 1987-02-17 1988-02-16 Kredsløb til genkendelse af svingninger

Country Status (5)

Country Link
US (1) US4845757A (de)
EP (1) EP0280909B1 (de)
AT (1) ATE69132T1 (de)
DE (1) DE3865859D1 (de)
DK (1) DK169012B1 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5225836A (en) * 1988-03-23 1993-07-06 Central Institute For The Deaf Electronic filters, repeated signal charge conversion apparatus, hearing aids and methods
US5091952A (en) * 1988-11-10 1992-02-25 Wisconsin Alumni Research Foundation Feedback suppression in digital signal processing hearing aids
US5259033A (en) * 1989-08-30 1993-11-02 Gn Danavox As Hearing aid having compensation for acoustic feedback
WO1992005538A1 (en) * 1990-09-14 1992-04-02 Chris Todter Noise cancelling systems
US5134658A (en) * 1990-09-27 1992-07-28 Advanced Micro Devices, Inc. Apparatus for discriminating information signals from noise signals in a communication signal
DK0567535T3 (da) * 1991-01-17 2003-12-08 Roger A Adelman Forbedret høreapparat
US5621802A (en) * 1993-04-27 1997-04-15 Regents Of The University Of Minnesota Apparatus for eliminating acoustic oscillation in a hearing aid by using phase equalization
US5412734A (en) * 1993-09-13 1995-05-02 Thomasson; Samuel L. Apparatus and method for reducing acoustic feedback
US5533120A (en) * 1994-02-01 1996-07-02 Tandy Corporation Acoustic feedback cancellation for equalized amplifying systems
JP2773678B2 (ja) * 1994-09-09 1998-07-09 ヤマハ株式会社 ハウリング防止装置
US5812679A (en) * 1994-11-30 1998-09-22 Killion; Mead Electronic damper circuit for a hearing aid and a method of using the same
US6466678B1 (en) 1994-11-30 2002-10-15 Etymotic Research, Inc. Hearing aid having digital damping
GB2311186A (en) * 1996-03-13 1997-09-17 Jan Albert Gadd Hearing aid feedback detecting and warning device
US6252967B1 (en) * 1999-01-21 2001-06-26 Acoustic Technologies, Inc. Reducing acoustic feedback with digital modulation
US6480610B1 (en) * 1999-09-21 2002-11-12 Sonic Innovations, Inc. Subband acoustic feedback cancellation in hearing aids
DE10244184B3 (de) * 2002-09-23 2004-04-15 Siemens Audiologische Technik Gmbh Feedbackkompensation für Hörgeräte mit Systemabstandsschätzung
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
AU2004201374B2 (en) * 2004-04-01 2010-12-23 Phonak Ag Audio amplification apparatus
US20070106530A1 (en) * 2004-05-26 2007-05-10 Blamey Peter J Oscillation suppression
DE102007007120A1 (de) 2007-02-13 2008-08-21 Siemens Audiologische Technik Gmbh Verfahren zum Erzeugen von akustischen Signalen eines Hörgeräts

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054462A (en) * 1976-03-01 1977-10-18 The Dow Chemical Company Method of cementing
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
ATE69132T1 (de) 1991-11-15
EP0280909A1 (de) 1988-09-07
EP0280909B1 (de) 1991-10-30
DE3865859D1 (de) 1991-12-05
US4845757A (en) 1989-07-04
DK77988D0 (da) 1988-02-16
DK77988A (da) 1988-08-18

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Legal Events

Date Code Title Description
B1 Patent granted (law 1993)
PSP Patent surrendered