EP1748677A2 - Prothèse auditive et procédé pour l'ajustement d'une charactéristique d'un amplificateur - Google Patents

Prothèse auditive et procédé pour l'ajustement d'une charactéristique d'un amplificateur Download PDF

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Publication number
EP1748677A2
EP1748677A2 EP06116984A EP06116984A EP1748677A2 EP 1748677 A2 EP1748677 A2 EP 1748677A2 EP 06116984 A EP06116984 A EP 06116984A EP 06116984 A EP06116984 A EP 06116984A EP 1748677 A2 EP1748677 A2 EP 1748677A2
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EP
European Patent Office
Prior art keywords
knee point
signal level
level range
gain
substantially linear
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.)
Granted
Application number
EP06116984A
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German (de)
English (en)
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EP1748677B1 (fr
EP1748677A3 (fr
Inventor
Roland Barthel
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.)
Sivantos GmbH
Original Assignee
Siemens Audiologische Technik GmbH
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Publication date
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Application filed by Siemens Audiologische Technik GmbH filed Critical Siemens Audiologische Technik GmbH
Publication of EP1748677A2 publication Critical patent/EP1748677A2/fr
Publication of EP1748677A3 publication Critical patent/EP1748677A3/fr
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    • 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
    • H04R25/35—Electric hearing aids using translation techniques
    • H04R25/356—Amplitude, e.g. amplitude shift or compression
    • 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
    • H04R25/70—Adaptation of deaf aid to hearing loss, e.g. initial electronic fitting

Definitions

  • the present invention relates to a method for adjusting a gain characteristic of a hearing device, in particular a hearing aid, wherein the gain characteristic defining the gain between input and output signal levels has a first substantially linear characteristic region, a second substantially linear characteristic region and a knee point therebetween. Moreover, the present invention relates to a hearing device with a corresponding amplifying device.
  • FIG. 1 also shows a useful or input signal level range EB, in which most of the speech signals are typically located. In the example chosen, the input signal level range is from 50 dB to 80 dB.
  • the amplification of a hearing device is adjusted in terms of hardware or software such that the knee point K1 'of the amplification lies below the useful signal level range EB, as shown in FIG.
  • the gain of the signal is lower and the signal is compressed, this is more likely to be accepted by the hearing aid wearer than disturbing distortions.
  • the hearing aid thus behaves linearly and harmonics, which occur due to a non-linear characteristic with fluctuating useful signal level around the knee point, are no longer to be feared. This results in the useful signal "speech" or "music” a more natural hearing.
  • the knee point of the gain curve can also be above the useful signal level range EB. However, this is rather unfavorable, since then the required recruitment compensation is difficult to achieve.
  • the knee point adjustment is based on assumptions made during hearing instrument fitting. If the level range of the desired signal changes, the adaptation is no longer optimal. For example, if the adjustment was done for a quiet speaker, there are problems with it a later communication with a loud speaker, since the Nutzsignalpegel Kunststoff shifts up here. Also, problems with high dynamic music may occur because the level range is very wide there.
  • the object of the present invention is therefore to optimize the amplification of a hearing device to the extent that at different Nutzsignalpegel Schemeschenen fewer distortions by non-linearity of the gain characteristic occur.
  • this object is achieved by a method for adjusting a gain characteristic of a hearing device, in particular a hearing aid, wherein the gain characteristic defining the gain between input and output signal levels, a first substantially linear characteristic region, a second substantially linear characteristic region and an intermediate knee point by detecting an input signal level range and shifting the knee point depending on the input level range.
  • the invention provides a hearing device, in particular a hearing aid, having an amplifying device, the amplification characteristic of which defines the gain between input and output signal levels, a first substantially linear characteristic region, a second substantially linear characteristic region and an intermediate knee point, a detection device for detecting an input signal level range and an adaptation device for shifting the knee point of the amplification device as a function of the input input level range.
  • the knee point of the gain characteristic is shifted below the input signal level range.
  • optimal loudness and linear amplification can always be provided in the useful or input signal level range. Consequently, there are no distortions and pleasant sound in the area of interest.
  • the gain characteristic may further include a second knee point lying between the second substantially linear characteristic region and a third substantially linear characteristic region, the second knee point being above the input signal level region.
  • the level range of the useful signal is first determined for setting the gain characteristic.
  • a level estimator is provided for this purpose, for example. It determines the useful or input signal level range EB. In the example of FIG. 1, this range, as mentioned at the beginning, lies between 50 dB and 80 dB.
  • the gain characteristic has in the example chosen here the already described course with two linear sections L1 and L2 and an intermediate knee point K1.
  • the knee point is slowly adjusted adaptively to the lower end of the useful signal level range EB. Finally, a new knee point K1 'results at the location shown in FIG. It now separates the linear regions L1 'and L2'.
  • the tracking is carried out in the present example so that the slope of the gain characteristic is maintained in the linear region L1 to the Nutzsignalpegel Scheme Scheme EB.
  • the slope or compression of the original linear range L2 is approximately selected so that the new linear range L2 'results.
  • the tracking of the knee point could also take place in that the steepness of the linear ranges varied and end points of the linear ranges are specified.
  • the knee point could always be set to the output signal level 50 dB at the beginning of the useful signal level range EB.
  • the gain characteristic of the hearing device according to FIG. 3 has two knee points K2 and K3. These two knee points K2 and K3 separate the linear regions L3, L4 and L5 from each other.
  • the gain characteristic is automatically adapted to the useful or input signal level range EB.
  • the knee point K2 is automatically shifted below the useful signal range EB or at its lower edge and the second knee point K3 above the useful signal range EB or at its upper edge.
  • the entire output signal level range is then less in the example chosen than in the above examples with a knee point, but the overall gain can then be increased and thus the useful signal can be played louder.
  • the signals above the second knee point K3 are highly compressed, but are not of great importance because they are outside of the substantial input signal level range.
  • An advantage of this amplification variant is also that the output amplification range can be significantly reduced for the user without any qualitative losses.

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  • 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)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Amplifiers (AREA)
EP06116984A 2005-07-25 2006-07-11 Prothèse auditive et procédé pour l'ajustement d'une charactéristique d'un amplificateur Revoked EP1748677B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005034647A DE102005034647B3 (de) 2005-07-25 2005-07-25 Hörvorrichtung und Verfahren zur Einstellung einer Verstärkungskennlinie

Publications (3)

Publication Number Publication Date
EP1748677A2 true EP1748677A2 (fr) 2007-01-31
EP1748677A3 EP1748677A3 (fr) 2009-10-21
EP1748677B1 EP1748677B1 (fr) 2011-11-23

Family

ID=37311896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06116984A Revoked EP1748677B1 (fr) 2005-07-25 2006-07-11 Prothèse auditive et procédé pour l'ajustement d'une charactéristique d'un amplificateur

Country Status (4)

Country Link
US (1) US20070019833A1 (fr)
EP (1) EP1748677B1 (fr)
DE (1) DE102005034647B3 (fr)
DK (1) DK1748677T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2617127B1 (fr) 2010-09-15 2017-01-11 Sonova AG Procédé et système pour fournir à un utilisateur une aide auditive
EP3852392B1 (fr) * 2020-01-17 2025-06-04 Sonova AG Compensation de pertes auditives cachées par atténuation de niveaux élevés de pression sonore

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8913768B2 (en) 2012-04-25 2014-12-16 Gn Resound A/S Hearing aid with improved compression
US9314624B2 (en) 2013-01-17 2016-04-19 Cochlear Limited Systems and methods for altering the input dynamic range of an auditory device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5027410A (en) 1988-11-10 1991-06-25 Wisconsin Alumni Research Foundation Adaptive, programmable signal processing and filtering for hearing aids
WO1999051059A1 (fr) 1998-04-01 1999-10-07 Audiologic Hearing Systems Lp Appareil et procedes permettant de combiner la compression audio et la suppression de l'effet larsen dans une prothese auditive

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5402496A (en) * 1992-07-13 1995-03-28 Minnesota Mining And Manufacturing Company Auditory prosthesis, noise suppression apparatus and feedback suppression apparatus having focused adaptive filtering
DE4340817A1 (de) * 1993-12-01 1995-06-08 Toepholm & Westermann Schaltungsanordnung für die automatische Regelung von Hörhilfsgeräten
DK0824845T3 (da) * 1995-05-02 1999-06-21 Toepholm & Westermann Fremgangsmåde til styring af et programmerbart eller programstyret høreapparat til dettes in situ tilpasningsjustering
JP3908833B2 (ja) * 1997-08-22 2007-04-25 ソニー株式会社 音声処理装置
ATE218028T1 (de) * 1997-12-23 2002-06-15 Widex As Dynamische automatische verstärkungssteuerung in einem hörhilfegerät
US6868163B1 (en) * 1998-09-22 2005-03-15 Becs Technology, Inc. Hearing aids based on models of cochlear compression
WO2002085063A2 (fr) * 2001-04-13 2002-10-24 Widex A/S Procede d'adaptation et appareil de correction auditive permettant de supprimer une occlusion percue
US7031484B2 (en) * 2001-04-13 2006-04-18 Widex A/S Suppression of perceived occlusion
US20030007657A1 (en) * 2001-07-09 2003-01-09 Topholm & Westermann Aps Hearing aid with sudden sound alert
DE10159928A1 (de) * 2001-12-06 2003-05-08 Siemens Audiologische Technik Verfahren zum Vermeiden rückkopplungsbedingter Oszillationen in einem Hörgerät sowie Hörgerät
DE10332119B3 (de) * 2003-07-16 2004-12-09 Siemens Audiologische Technik Gmbh Aktive Störgeräuschunterdrückung bei einem im Ohr tragbaren Hörhilfegerät oder einem Hörhilfegerät mit im Ohr tragbarer Otoplastik

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5027410A (en) 1988-11-10 1991-06-25 Wisconsin Alumni Research Foundation Adaptive, programmable signal processing and filtering for hearing aids
WO1999051059A1 (fr) 1998-04-01 1999-10-07 Audiologic Hearing Systems Lp Appareil et procedes permettant de combiner la compression audio et la suppression de l'effet larsen dans une prothese auditive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2617127B1 (fr) 2010-09-15 2017-01-11 Sonova AG Procédé et système pour fournir à un utilisateur une aide auditive
EP3852392B1 (fr) * 2020-01-17 2025-06-04 Sonova AG Compensation de pertes auditives cachées par atténuation de niveaux élevés de pression sonore

Also Published As

Publication number Publication date
US20070019833A1 (en) 2007-01-25
DK1748677T3 (da) 2012-03-05
DE102005034647B3 (de) 2007-02-22
EP1748677B1 (fr) 2011-11-23
EP1748677A3 (fr) 2009-10-21

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