DK485986A - Adaptiv stoejundertrykker - Google Patents

Adaptiv stoejundertrykker Download PDF

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Publication number
DK485986A
DK485986A DK485986A DK485986A DK485986A DK 485986 A DK485986 A DK 485986A DK 485986 A DK485986 A DK 485986A DK 485986 A DK485986 A DK 485986A DK 485986 A DK485986 A DK 485986A
Authority
DK
Denmark
Prior art keywords
adaptive noise
noise pressure
pressure
adaptive
noise
Prior art date
Application number
DK485986A
Other languages
Danish (da)
English (en)
Other versions
DK485986D0 (da
Inventor
Douglas M Chabries
Richard W Christiansen
Douglas Lynn
Gary Kenworthy
Original Assignee
Antin Mark
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 Antin Mark filed Critical Antin Mark
Publication of DK485986D0 publication Critical patent/DK485986D0/da
Publication of DK485986A publication Critical patent/DK485986A/da

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H03H21/0025—Particular filtering methods
    • H03H21/0027—Particular filtering methods filtering in the frequency domain
    • 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
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/43—Signal processing in hearing aids to enhance the speech intelligibility
    • 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

  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Human Computer Interaction (AREA)
  • Quality & Reliability (AREA)
  • Computational Linguistics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Noise Elimination (AREA)
  • Inorganic Insulating Materials (AREA)
  • Filters That Use Time-Delay Elements (AREA)
DK485986A 1985-10-10 1986-10-10 Adaptiv stoejundertrykker DK485986A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/785,999 US4658426A (en) 1985-10-10 1985-10-10 Adaptive noise suppressor

Publications (2)

Publication Number Publication Date
DK485986D0 DK485986D0 (da) 1986-10-10
DK485986A true DK485986A (da) 1987-04-11

Family

ID=25137296

Family Applications (1)

Application Number Title Priority Date Filing Date
DK485986A DK485986A (da) 1985-10-10 1986-10-10 Adaptiv stoejundertrykker

Country Status (7)

Country Link
US (1) US4658426A (de)
EP (1) EP0220563B1 (de)
JP (1) JPS62155606A (de)
AU (1) AU582018B2 (de)
CA (1) CA1250348A (de)
DE (1) DE3685474D1 (de)
DK (1) DK485986A (de)

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Also Published As

Publication number Publication date
EP0220563A1 (de) 1987-05-06
EP0220563B1 (de) 1992-05-27
JPS62155606A (ja) 1987-07-10
CA1250348A (en) 1989-02-21
AU6365386A (en) 1987-04-16
US4658426A (en) 1987-04-14
AU582018B2 (en) 1989-03-09
DE3685474D1 (de) 1992-07-02
DK485986D0 (da) 1986-10-10

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