EP1067821A3 - Hörhilfe - Google Patents

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Publication number
EP1067821A3
EP1067821A3 EP00810584A EP00810584A EP1067821A3 EP 1067821 A3 EP1067821 A3 EP 1067821A3 EP 00810584 A EP00810584 A EP 00810584A EP 00810584 A EP00810584 A EP 00810584A EP 1067821 A3 EP1067821 A3 EP 1067821A3
Authority
EP
European Patent Office
Prior art keywords
signal
noise
frequency bands
path
suppression
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP00810584A
Other languages
English (en)
French (fr)
Other versions
EP1067821A2 (de
Inventor
Arthur Schaub
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bernafon AG
Original Assignee
Bernafon 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 Bernafon AG filed Critical Bernafon AG
Publication of EP1067821A2 publication Critical patent/EP1067821A2/de
Publication of EP1067821A3 publication Critical patent/EP1067821A3/de
Ceased legal-status Critical Current

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
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/502—Customised settings for obtaining desired overall acoustical characteristics using analog signal processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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

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)
  • Filters That Use Time-Delay Elements (AREA)
  • Noise Elimination (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

Die Unterdrückung von Störlärm in einem Eingangssignal (7) erfolgt in einem Hauptsignalpfad (5), der weder eine Transformation in den Frequenzbereich noch eine Aufteilung in Teilbandsignale, sondern lediglich ein Unterdrückungsfilter (4) aufweist. Die Übertragungsfunktion des Unterdrückungsfilters (4) wird periodisch neu bestimmt wird aufgrund von Abschwächungsfaktoren, die in einem parallel zum Hauptsignalpfad (5) liegenden Signalanalysepfad (6) ermittelt werden. Die Abschwächungsfaktoren werden zur Abschwächung von Signalkomponenten in Frequenzbändern mit erheblichem Anteil an Störlärm verwendet. Das Unterdrückungsfilter (4) ist als Transversalfilter realisiert, dessen Impulsantwort periodisch als gewichtete Summe der Impulsantworten von transversalen Bandpassfiltern neu berechnet wird. Der Signalanalysepfad (6) umfasst in einer Baumstruktur angeordnete transversale Halbbandfilter (1a-1g) mit sukzessiv reduzierter Verarbeitungsrate, die eine Aufteilung in Teilsignale in acht oder mehr Frequenzbänder mit hoher Trennschärfe ermöglichen. Auf diese Weise wird eine Verarbeitung mit geringer Signalverzögerung und einer Untersuchung des Anteils an Störlärm in genügend vielen Frequenzbändern mit genügend hoher Trennschärfe überhaupt erst möglich.
EP00810584A 1999-07-08 2000-07-05 Hörhilfe Ceased EP1067821A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH125699 1999-07-08
CH125699 1999-07-08

Publications (2)

Publication Number Publication Date
EP1067821A2 EP1067821A2 (de) 2001-01-10
EP1067821A3 true EP1067821A3 (de) 2008-04-30

Family

ID=4206139

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00810584A Ceased EP1067821A3 (de) 1999-07-08 2000-07-05 Hörhilfe

Country Status (3)

Country Link
US (1) US6580798B1 (de)
EP (1) EP1067821A3 (de)
AU (1) AU771005B2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1453355B1 (de) * 2003-02-26 2012-10-24 Bernafon AG Signalverarbeitung in einem Hörgerät
CN100565672C (zh) * 2005-12-30 2009-12-02 财团法人工业技术研究院 去除语音信号中背景噪声的方法
DK2567552T3 (en) * 2010-05-06 2018-09-24 Sonova Ag METHOD OF OPERATING A HEARING AND HEARING
EP2978242B1 (de) * 2014-07-25 2018-12-26 2236008 Ontario Inc. System und verfahren zur minderung von audiofeedback
DE102015204253B4 (de) * 2015-03-10 2016-11-10 Sivantos Pte. Ltd. Verfahren zur frequenzabhängigen Rauschunterdrückung eines Eingangssignals sowie Hörgerät

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630304A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic background noise estimator for a noise suppression system
WO1990005437A1 (en) * 1988-11-10 1990-05-17 Nicolet Instrument Corporation Adaptive, programmable signal processing and filtering for hearing aids
US5029217A (en) * 1986-01-21 1991-07-02 Harold Antin Digital hearing enhancement apparatus
US5892836A (en) * 1995-10-26 1999-04-06 Nec Corporation Digital hearing aid

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630304A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic background noise estimator for a noise suppression system
US5029217A (en) * 1986-01-21 1991-07-02 Harold Antin Digital hearing enhancement apparatus
WO1990005437A1 (en) * 1988-11-10 1990-05-17 Nicolet Instrument Corporation Adaptive, programmable signal processing and filtering for hearing aids
US5892836A (en) * 1995-10-26 1999-04-06 Nec Corporation Digital hearing aid

Also Published As

Publication number Publication date
AU771005B2 (en) 2004-03-11
AU4508300A (en) 2001-01-11
US6580798B1 (en) 2003-06-17
EP1067821A2 (de) 2001-01-10

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