EP1335630A2 - In the ear hearing aid or hearing aid with an otoplastic to be worn in the ear - Google Patents

In the ear hearing aid or hearing aid with an otoplastic to be worn in the ear Download PDF

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Publication number
EP1335630A2
EP1335630A2 EP03000816A EP03000816A EP1335630A2 EP 1335630 A2 EP1335630 A2 EP 1335630A2 EP 03000816 A EP03000816 A EP 03000816A EP 03000816 A EP03000816 A EP 03000816A EP 1335630 A2 EP1335630 A2 EP 1335630A2
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EP
European Patent Office
Prior art keywords
hearing aid
ear
worn
ventilation
ventilation duct
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Granted
Application number
EP03000816A
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German (de)
French (fr)
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EP1335630A3 (en
EP1335630B1 (en
Inventor
Torsten Dr. Niederdränk
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Sivantos GmbH
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Siemens Audioligische Technik GmbH
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Publication of EP1335630A2 publication Critical patent/EP1335630A2/en
Publication of EP1335630A3 publication Critical patent/EP1335630A3/en
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Publication of EP1335630B1 publication Critical patent/EP1335630B1/en
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    • 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
    • H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
    • H04R25/652—Ear tips; Ear moulds
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/11—Aspects relating to vents, e.g. shape, orientation, acoustic properties in ear tips of hearing devices to prevent occlusion

Definitions

  • the invention relates to a hearing aid or wearable in the ear Hearing aid with earmold that can be worn in the ear with one Ventilation duct.
  • the ventilation duct also as a ventilation hole or short Vent means a hearing aid or portable hearing aid a hearing aid with earmold that can be worn in the ear ventilation of the ear canal, atmospheric pressure equalization or to reduce the occlusion effect.
  • the largest possible cross section of the Ventilation duct desirable.
  • he provides one acoustic bypass to the signal path via the input converter, the signal processing unit and the output converter of the Hearing aid is what, especially in a loud sound situation can cause functions of the hearing aid like a special directivity or noise reduction become ineffective.
  • US Pat. No. 6,339,648 B1 can be used in an ear canal Part known.
  • This part can be used as an earmold with a hearing aid that can be worn behind the ear as a hearing protection device or designed as a hearing aid that can be worn in the ear his.
  • the part can be filled through a first channel, so that the outer shape of the part is individual adapts the respective ear canal.
  • there is an acoustic channel present that is widened at one end and thereby when executing the part as a hearing protection device Plug and when executing the part as an otoplastic one Can accommodate sound tube.
  • the object of the present invention is the ventilation duct in the case of a hearing aid that can be worn in the ear or a hearing aid with earmold that can be worn in the ear that a good ventilation effect is achieved and at the same time the risk of feedback through the ventilation duct is minimized.
  • This task is for a hearing aid or portable hearing aid Hearing aid with earmold that can be worn in the ear with one Ventilation channel solved in that the ventilation channel in divided at least a first and a second partial area is, with the hearing aid worn or worn Otoplasty proximal first section a first cross-sectional area and has a first length and the distal second section a smaller length and a larger cross-sectional area compared to the first section.
  • the ventilation duct can first Approximation by a transmission of the sound pressure over a Mass are shown.
  • This mass distribution of the applied sound pressure is approximately independent of frequency and ensures a strong radiation from the ventilation opening.
  • a modified cross-section acts at the end of the Ventilation duct with otherwise unchanged ventilation duct a reduced radiation impedance.
  • the advantage over The conventional ventilation systems consist of reducing acoustic radiation in the room. This gives one significantly improved stability of the hearing aids in practice and also allows the use of a ventilation duct with compared to a conventional hearing aid or conventional earmold enlarged in all areas Cross-sectional area while maintaining the stability conditions.
  • the hearing aid is worn or worn Otoplasty proximal part of the ventilation channel according to the invention much longer than the distal portion with the enlarged cross-sectional area. So it is achieved that the flow resistance of the ventilation duct in the Remains essentially unchanged.
  • the length of the first section is at least that should be five times the length of the second section.
  • the cross sectional area of the second partial area advantageously at least three times Cross-sectional area of the first partial area, with what a significant reduction in radiation from the ventilation opening radiated sound components is reached.
  • An embodiment of the invention provides that in particular acoustic filter elements for longer ventilation ducts are arranged in a ventilation duct. Longer ventilation channels cause the occurrence of line resonances, where the acoustic conductivity of the ventilation duct is maximized.
  • the acoustic filter elements will Prevents resonance effects from occurring.
  • the filter elements can, for example, as cross-sectional jumps or as in the Ventilation channel inserted acoustic damping elements be trained.
  • FIG 1 is a schematic, highly simplified representation one arranged in the auditory canal 1 of a hearing device wearer Hearing aid 2 shown.
  • An acoustic signal will appear the ear of the hearing aid wearer on the one hand via a microphone 8, a signal processing unit (not shown) and one Handset 3 with assigned handset channel 4 and on the other hand the ventilation duct 5 supplied.
  • the ventilation duct 5 provides thus bypasses the electroacoustic signal path represents the hearing aid 2.
  • this is bypass dominating compared to the signal path through the hearing aid. This can lead to certain functions of the Hearing aids such as a desired directivity or noise reduction, only limited can be.
  • the ventilation duct 5 can pass through the ventilation duct 5 also to feedback between the receiver 3 and the Microphone 8 come.
  • the recorded by the microphone 8 and acoustic input signals converted into electrical signals are passed through the signal processing unit and then fed to a receiver 3.
  • This in turn shines 4 acoustic signals into the ear canal 1 via the ear canal from.
  • Via the proximal ventilation opening 7 and the ventilation channel 5 these acoustic signals arrive partially back into the outside space and reach after the radiation the microphone 8 from the distal ventilation opening 6
  • the feedback path is closed. Therefore, the ventilation duct 5 only a relatively small cross-sectional area exhibit. However, this worsens ventilation of the part closed by the hearing aid 2 of the ear canal 1.
  • FIG. 2 also shows a hearing aid 2 that can be worn in the ear, which is located in the ear canal 1 of a hearing aid wearer.
  • the ventilation duct according to the invention modified so that a second turned away from the head Subarea 5B of the ventilation duct compared to a first, the portion 5A facing the head is expanded, with what the second section 5B is one compared to the first section 5A has increased cross-sectional area.
  • the aspect ratios the subareas are preferably so dimensioned that the portion 5A much longer than that Subarea 5B is. This ensures that the flow resistance of the ventilation duct essentially that Flow resistance of section 5A corresponds.

Abstract

The hearing aid device (2) or ear fitting has a ventilation channel divided into at least first and second sub-regions (5A,5B), whereby the second sub-region, which is further away when the device is being worn, has a shorter length and larger cross-sectional area than the first or nearer sub-region.

Description

Die Erfindung betrifft ein im Ohr tragbares Hörhilfegerät oder Hörhilfegerät mit im Ohr tragbarer Otoplastik mit einem Belüftungskanal.The invention relates to a hearing aid or wearable in the ear Hearing aid with earmold that can be worn in the ear with one Ventilation duct.

Der Belüftungskanal, auch als Ventilationsbohrung oder kurz Vent bezeichnet, eines im Ohr tragbaren Hörhilfegeräts oder eines Hörhilfegeräts mit im Ohr tragbarer Otoplastik dient der Belüftung des Ohrkanals, dem atmosphärischen Druckausgleich oder zur Verringerung des Verschlusseffekts (Okklusionseffekt). Dafür ist ein möglichst großer Querschnitt des Belüftungskanals wünschenswert. Andererseits stellt er einen akustischen Bypass zum Signalpfad über den Eingangswandler, die Signalverarbeitungseinheit und den Ausgangswandler des Hörhilfegeräts dar, was insbesondere in einer lauten Schallsituation dazu führen kann, dass Funktionen des Hörhilfegeräts wie eine besondere Richtwirkung oder eine Störgeräuschminderung unwirksam werden. Darüber hinaus kommt es vor allem in Schallsituationen mit einem niedrigen Pegel des Eingangssignals und einer durch die Dynamikkompression bedingten hohen Verstärkung des Hörhilfegeräts über den Belüftungskanal zu Rückkopplungen zwischen dem Ausgangswandler und dem Eingangswandler. Auch dieser Effekt ist abhängig vom Querschnitt des Belüftungskanals. Aus den genannten Gründen resultiert die Forderung nach einem möglichst kleinen Querschnitt des Belüftungskanals. Die Weite des Belüftungskanals stellt somit einen Kompromiss zwischen Tragekomfort und Leistungsmerkmalen des Hörhilfegeräts dar. Sie wird in der Regel bei der Anpassung des Hörhilfegeräts durch Einsetzen von Hülsen mit unterschiedlichen Bohrungen zur Verengung des Belüftungskanals eingestellt. The ventilation duct, also as a ventilation hole or short Vent means a hearing aid or portable hearing aid a hearing aid with earmold that can be worn in the ear ventilation of the ear canal, atmospheric pressure equalization or to reduce the occlusion effect. For this, the largest possible cross section of the Ventilation duct desirable. On the other hand, he provides one acoustic bypass to the signal path via the input converter, the signal processing unit and the output converter of the Hearing aid is what, especially in a loud sound situation can cause functions of the hearing aid like a special directivity or noise reduction become ineffective. In addition, it happens above all in sound situations with a low level of the input signal and a high one due to dynamic compression Reinforcement of the hearing aid via the ventilation channel feedback between the output converter and the input converter. This effect also depends on the cross section of the ventilation duct. Resulting from the reasons mentioned the demand for the smallest possible cross section of the Ventilation duct. The width of the ventilation duct thus represents a compromise between comfort and performance of the hearing aid. It is usually used during the adjustment of the hearing aid by inserting sleeves with different Holes to narrow the ventilation duct set.

Aus der US 6,339,648 B1 ist ein in einen Gehörgang einsetzbares Teil bekannt. Dieses Teil kann als Otoplastik in Verbindung mit einem hinter dem Ohr tragbaren Hörgerät, als Gehörschutzgerät oder als in dem Ohr tragbares Hörgerät ausgebildet sein. Durch einen ersten Kanal kann das Teil befüllt werden, so dass sich die äußere Form des Teils individuell an den jeweiligen Gehörgang anpasst. Weiterhin ist ein Belüftungskanal mit über seinen gesamten Verlauf gleichbleibender Querschnittsfläche vorhanden. Darüber hinaus ist ein Akustik-Kanal vorhanden, der an einem Ende aufgeweitet ist und dadurch bei der Ausführung des Teils als Gehörschutzgerät einen Stöpsel und bei der Ausführung des Teils als Otoplastik einen Schallschlauch aufnehmen kann.US Pat. No. 6,339,648 B1 can be used in an ear canal Part known. This part can be used as an earmold with a hearing aid that can be worn behind the ear as a hearing protection device or designed as a hearing aid that can be worn in the ear his. The part can be filled through a first channel, so that the outer shape of the part is individual adapts the respective ear canal. There is also a ventilation duct with more consistent over its entire course Cross-sectional area available. In addition, there is an acoustic channel present that is widened at one end and thereby when executing the part as a hearing protection device Plug and when executing the part as an otoplastic one Can accommodate sound tube.

Aufgabe der vorliegenden Erfindung ist es, den Belüftungskanal bei einem im Ohr tragbaren Hörhilfegerät oder einem Hörhilfegerät mit im Ohr tragbarer Otoplastik so weiterzubilden, dass eine gute Ventilationswirkung erreicht wird und gleichzeitig die Gefahr von Rückkopplungen durch den Belüftungskanal minimiert wird.The object of the present invention is the ventilation duct in the case of a hearing aid that can be worn in the ear or a hearing aid with earmold that can be worn in the ear that a good ventilation effect is achieved and at the same time the risk of feedback through the ventilation duct is minimized.

Diese Aufgabe wird für ein im Ohr tragbares Hörhilfegerät oder Hörhilfegerät mit im Ohr tragbarer Otoplastik mit einem Belüftungskanal dadurch gelöst, dass der Belüftungskanal in wenigstens einen ersten und einen zweiten Teilbereich unterteilt ist, wobei der bei getragenem Hörhilfegerät oder getragener Otoplastik proximale erste Teilbereich eine erste Querschnittsfläche und eine erste Länge aufweist und der distale zweite Teilbereich eine kleinere Länge und eine größere Querschnittsfläche im Vergleich zu dem ersten Teilbereich aufweist.This task is for a hearing aid or portable hearing aid Hearing aid with earmold that can be worn in the ear with one Ventilation channel solved in that the ventilation channel in divided at least a first and a second partial area is, with the hearing aid worn or worn Otoplasty proximal first section a first cross-sectional area and has a first length and the distal second section a smaller length and a larger cross-sectional area compared to the first section.

In einer Modellvorstellung kann der Belüftungskanal in erster Näherung durch eine Übertragung des Schalldrucks über eine Masse dargestellt werden. Der Ausgang des Belüftungskanals, die sog. Ventilationsöffnung, strahlt ein Schallsignal in den freien Raum ab, was wiederum über eine bewegte Mediumsmasse beschrieben werden kann. Diese massenbehaftete Aufteilung des anliegenden Schalldrucks ist näherungsweise frequenzunabhängig und sorgt für eine starke Abstrahlung aus der Ventilationsöffnung.In a model presentation, the ventilation duct can first Approximation by a transmission of the sound pressure over a Mass are shown. The exit of the ventilation duct, the so-called ventilation opening, emits a sound signal in the free space, which in turn means a moving medium mass can be described. This mass distribution of the applied sound pressure is approximately independent of frequency and ensures a strong radiation from the ventilation opening.

Ausgehend von dieser Modellvorstellung kann über eine gezielte Veränderung des Ventilationskanals die entscheidende bewegte Mediumsmasse der Ventilationsöffnung reduziert werden. Dabei wirkt durch einen veränderten Querschnitt am Ende des Belüftungskanals bei ansonsten unverändertem Belüftungskanal eine verringerte Strahlungsimpedanz. Der Vorteil gegenüber den herkömmlichen Ventilationssystemen besteht in der vermindernden akustischen Abstrahlung in den Raum. Dies ergibt eine deutlich verbesserte Stabilität der Hörgeräte in der Praxis und erlaubt zum anderen die Verwendung eines Belüftungskanals mit gegenüber einem herkömmlichen Hörhilfegerät bzw. einer herkömmlichen Otoplastik in allen Teilbereichen vergrößerten Querschnittsfläche unter Beibehaltung der Stabilitätsbedingungen.Based on this model, you can use a targeted Changing the ventilation duct is the crucial moving Medium mass of the ventilation opening can be reduced. A modified cross-section acts at the end of the Ventilation duct with otherwise unchanged ventilation duct a reduced radiation impedance. The advantage over The conventional ventilation systems consist of reducing acoustic radiation in the room. This gives one significantly improved stability of the hearing aids in practice and also allows the use of a ventilation duct with compared to a conventional hearing aid or conventional earmold enlarged in all areas Cross-sectional area while maintaining the stability conditions.

Vorteilhaft ist der bei getragenem Hörhilfegerät oder getragener Otoplastik proximale Teilbereich des Belüftungskanals gemäß der Erfindung wesentlich länger als der distale Teilbereich mit der vergrößerten Querschnittsfläche. So wird erreicht, dass der Strömungswiderstand des Belüftungskanals im Wesentlichen unverändert bleibt. In der Praxis hat sich gezeigt, dass die Länge des ersten Teilbereiches wenigstens die fünffache Länge des zweiten Teilbereiches aufweisen sollte.It is advantageous if the hearing aid is worn or worn Otoplasty proximal part of the ventilation channel according to the invention much longer than the distal portion with the enlarged cross-sectional area. So it is achieved that the flow resistance of the ventilation duct in the Remains essentially unchanged. Practice has shown that the length of the first section is at least that should be five times the length of the second section.

Bezüglich der Größenverhältnisse der Querschnittsflächen konnte festgestellt werden, dass die Querschnittsfläche des zweiten Teilbereiches vorteilhaft wenigstens die dreifache Querschnittsfläche des ersten Teilbereiches aufweist, womit eine wesentliche Reduzierung der Abstrahlung der von der Ventilationsöffnung abgestrahlten Schallanteile erreicht wird. Regarding the size relationships of the cross-sectional areas it was found that the cross sectional area of the second partial area advantageously at least three times Cross-sectional area of the first partial area, with what a significant reduction in radiation from the ventilation opening radiated sound components is reached.

Eine Ausführungsform der Erfindung sieht vor, dass insbesondere bei längeren Belüftungskanälen akustische Filterelemente in einem Belüftungskanal angeordnet sind. Längere Belüftungskanäle bewirken nämlich das Auftreten von Leitungsresonanzen, an denen die akustische Leitfähigkeit des Belüftungskanals maximiert wird. Durch die akustischen Filterelemente wird das Auftreten von Resonanzeffekten verhindert. Die Filterelemente können beispielsweise als Querschnittssprünge oder als in den Belüftungskanal eingebrachte akustische Dämpfungselemente ausgebildet sein.An embodiment of the invention provides that in particular acoustic filter elements for longer ventilation ducts are arranged in a ventilation duct. Longer ventilation channels cause the occurrence of line resonances, where the acoustic conductivity of the ventilation duct is maximized. The acoustic filter elements will Prevents resonance effects from occurring. The filter elements can, for example, as cross-sectional jumps or as in the Ventilation channel inserted acoustic damping elements be trained.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels näher beschrieben. Dabei zeigen:

  • Figur 1 ein in dem Ohr tragbares Hörhilfegerät mit einem Belüftungskanal nach dem Stand der Technik und
  • Figur 2 ein in dem Ohr tragbares Hörhilfegerät mit einem Belüftungskanal gemäß der Erfindung.
    • The invention is described in more detail below using an exemplary embodiment. Show:
  • Figure 1 is a hearing aid portable in the ear with a ventilation channel according to the prior art and
  • Figure 2 shows a hearing aid portable in the ear with a ventilation channel according to the invention.

    • In Figur 1 ist in schematischer, stark vereinfachter Darstellung ein in dem Gehörgang 1 eines Hörgeräteträgers angeordnetes Hörhilfegerät 2 dargestellt. Ein akustisches Signal wird dem Ohr des Hörgeräteträgers einerseits über ein Mikrofon 8, eine Signalverarbeitungseinheit (nicht dargestellt) und einen Hörer 3 mit zugeordnetem Hörerkanal 4 und andererseits über den Belüftungskanal 5 zugeführt. Der Belüftungskanal 5 stellt somit einen Bypass zum elektroakustischen Signalpfad durch das Hörhilfegerät 2 dar. In bestimmten akustischen Situationen, z.B. bei geringer akustischer Verstärkung des Hörhilfegeräts aufgrund einer lauten Schallumgebung, ist dieser Bypass gegenüber dem Signalpfad durch das Hörhilfegerät dominierend. Dies kann dazu führen, dass bestimmte Funktionen des Hörhilfegeräts, wie z.B. eine gewünschte Richtwirkung oder eine Störgeräuschminderung, nurmehr eingeschränkt ausgeführt werden können. Darüber hinaus kann es durch den Belüftungskanal 5 auch zu Rückkopplungen zwischen dem Hörer 3 und dem Mikrofon 8 kommen. Die von dem Mikrofon 8 aufgenommenen und in elektrische Signale umgewandelten akustischen Eingangssignale werden durch die Signalverarbeitungseinheit geleitet und anschließend einem Hörer 3 zugeführt. Dieser strahlt wiederum über den Hörerkanal 4 akustische Signale in den Ohrkanal 1 ab. Über die proximale Ventilationsöffnung 7 und den Belüftungskanal 5 gelangen diese akustischen Signale teilweise wieder in den Außenraum und erreichen nach der Abstrahlung von der distalen Ventilationsöffnung 6 das Mikrofon 8. Der Rückkopplungspfad ist so geschlossen. Daher sollte der Belüftungskanal 5 lediglich eine verhältnismäßig kleine Querschnittsfläche aufweisen. Dies verschlechtert jedoch die Belüftung des durch das Hörhilfegerät 2 abgeschlossenen Teils des Ohrkanals 1.In Figure 1 is a schematic, highly simplified representation one arranged in the auditory canal 1 of a hearing device wearer Hearing aid 2 shown. An acoustic signal will appear the ear of the hearing aid wearer on the one hand via a microphone 8, a signal processing unit (not shown) and one Handset 3 with assigned handset channel 4 and on the other hand the ventilation duct 5 supplied. The ventilation duct 5 provides thus bypasses the electroacoustic signal path represents the hearing aid 2. In certain acoustic situations, e.g. with low acoustic amplification of the hearing aid due to a loud sound environment, this is bypass dominating compared to the signal path through the hearing aid. This can lead to certain functions of the Hearing aids such as a desired directivity or noise reduction, only limited can be. In addition, it can pass through the ventilation duct 5 also to feedback between the receiver 3 and the Microphone 8 come. The recorded by the microphone 8 and acoustic input signals converted into electrical signals are passed through the signal processing unit and then fed to a receiver 3. This in turn shines 4 acoustic signals into the ear canal 1 via the ear canal from. Via the proximal ventilation opening 7 and the ventilation channel 5 these acoustic signals arrive partially back into the outside space and reach after the radiation the microphone 8 from the distal ventilation opening 6 The feedback path is closed. Therefore, the ventilation duct 5 only a relatively small cross-sectional area exhibit. However, this worsens ventilation of the part closed by the hearing aid 2 of the ear canal 1.

    Figur 2 zeigt ebenfalls ein im Ohr tragbares Hörhilfegerät 2, das sich in dem Ohrkanal 1 eines Hörgeräteträgers befindet. Hierbei ist jedoch der Belüftungskanal gemäß der Erfindung dahingehend abgewandelt, dass ein dem Kopf abgewandter zweiter Teilbereich 5B des Belüftungskanals gegenüber einem ersten, dem Kopf zugewandten Teilbereich 5A aufgeweitet ist, womit der zweite Teilbereich 5B eine gegenüber dem ersten Teilbereich 5A vergrößerte Querschnittsfläche aufweist. Die Längenverhältnisse der Teilbereiche sind dabei vorzugsweise so bemessen, dass der Teilbereich 5A wesentlich länger als der Teilbereich 5B ist. Dadurch ist gewährleistet, dass der Strömungswiderstand des Belüftungskanals im Wesentlichen dem Strömungswiderstand des Teilbereiches 5A entspricht. Durch die Veränderung des Belüftungskanals im Bereich der distalen Ventilationsöffnung 6 wird erreicht, dass die entscheidende bewegte Mediumsmasse dieser Ventilationsöffnung 6 reduziert ist. Durch den veränderten Querschnitt an dem dem Kopf abgewandten Ende des Belüftungskanals wird bei ansonsten unverändertem Kanal eine verringerte Strahlungsimpedanz erreicht. Dies bewirkt, dass der Schalldruck des über den Hörer 3 abgegebenen und über den Hörerkanal 4 und den Belüftungskanal 5A, 5B wieder zum Mikrofon 8 gelangenden Signals gegenüber dem Schalldruck eines vergleichbaren Signals bei einem Hörhilfegerät mit einem herkömmlichen Belüftungskanal reduziert ist. Die Rückkopplungsneigung des Hörhilfegeräts ist dadurch vermindert. Insgesamt kann dadurch die Bandbreite der durch das Hörhilfegerät 2 gemäß der Erfindung übertragbaren akustischen Signale in Richtung höherer Frequenzen erweitert werden. Weiterhin kann der gesamte Querschnitt des Belüftungskanals gegenüber dem Querschnitt eines Belüftungskanals bei einem herkömmlichen Hörhilfegerät erweitert werden, ohne dass hierbei die Rückkopplungsneigung des Hörhilfegerätes zunimmt.FIG. 2 also shows a hearing aid 2 that can be worn in the ear, which is located in the ear canal 1 of a hearing aid wearer. Here, however, is the ventilation duct according to the invention modified so that a second turned away from the head Subarea 5B of the ventilation duct compared to a first, the portion 5A facing the head is expanded, with what the second section 5B is one compared to the first section 5A has increased cross-sectional area. The aspect ratios the subareas are preferably so dimensioned that the portion 5A much longer than that Subarea 5B is. This ensures that the flow resistance of the ventilation duct essentially that Flow resistance of section 5A corresponds. By the change in the ventilation duct in the area of the distal Ventilation opening 6 is achieved that the decisive one moving medium mass of this ventilation opening 6 is reduced is. Due to the changed cross-section on the side facing away from the head The end of the ventilation duct is otherwise unchanged Channel reached a reduced radiation impedance. This has the effect that the sound pressure emitted by the receiver 3 and via the receiver channel 4 and the ventilation channel 5A, 5B signal coming back to the microphone 8 compared to the Sound pressure of a comparable signal in a hearing aid is reduced with a conventional ventilation duct. The tendency of the hearing aid to feedback is reduced as a result. Overall, the range of the Hearing aid 2 acoustic according to the invention Signals are extended towards higher frequencies. Farther can face the entire cross section of the ventilation duct the cross section of a ventilation duct in a conventional Hearing aid can be expanded without this the feedback tendency of the hearing aid increases.

    Als weitere Möglichkeit zur Verringerung des Anteils der akustischen Energie, die über den Belüftungskanal in die freie Umgebung abgestrahlt und von dem Mikrofon erneut aufgenommen werden kann, ist bei dem Hörhilfegerät 2 gemäß Figur 2 ein akustischer Dämpfer in dem Belüftungskanal vorhanden. Dadurch wird das Auftreten von Resonanzeffekten in dem Belüftungskanal verhindert.As another way to reduce the amount of acoustic Energy released into the free via the ventilation duct Radiated environment and recorded again by the microphone in the hearing aid 2 according to FIG acoustic damper present in the ventilation duct. Thereby the occurrence of resonance effects in the ventilation duct prevented.

    Claims (5)

    Im Ohr tragbares Hörhilfegerät (2) oder Hörhilfegerät mit im Ohr tragbarer Otoplastik mit einem Belüftungskanal (5),
    dadurch gekennzeichnet, dass der Belüftungskanal (5) in wenigstens einen ersten und einen zweiten Teilbereich unterteilt ist, wobei der bei getragenem Hörhilfegerät oder getragener Otoplastik proximale erste Teilbereich (5A) eine erste Querschnittsfläche und eine erste Länge aufweist und der distale zweite Teilbereich (5B) eine kleinere Länge und eine größere Querschnittsfläche im Vergleich zu dem ersten Teilbereich (5A) aufweist.    Hearing aid portable in the ear (2) or hearing aid with earmold portable in the ear with a ventilation channel (5),
    characterized in that the ventilation channel (5) is subdivided into at least a first and a second partial area, the first partial area (5A) proximal when the hearing aid device or otoplastic is worn, has a first cross-sectional area and a first length, and the distal second partial area (5B) has a smaller length and a larger cross-sectional area in comparison to the first partial region (5A).         Im Ohr tragbares Hörhilfegerät (2) oder Hörhilfegerät mit im Ohr tragbarer Otoplastik nach Anspruch 1,
    dadurch gekennzeichnet, dass der erste Teilbereich (5A) wenigstens die fünffache Länge des zweiten Teilbereiches (5B) aufweist.    Hearing aid (2) that can be worn in the ear or hearing aid with earmold that can be worn in the ear according to claim 1,
    characterized in that the first section (5A) has at least five times the length of the second section (5B).         Im Ohr tragbares Hörhilfegerät (2) oder Hörhilfegerät mit im Ohr tragbarer Otoplastik nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass der zweite Teilbereich (5B) wenigstens die dreifache Querschnittsfläche des ersten Teilbereiches (5A) aufweist.    Hearing aid (2) that can be worn in the ear or hearing aid with earmold that can be worn in the ear according to claim 1 or 2,
    characterized in that the second section (5B) has at least three times the cross-sectional area of the first section (5A).         Im Ohr tragbares Hörhilfegerät (2) oder Hörhilfegerät mit im Ohr tragbarer Otoplastik nach einem der Ansprüche 1 bis 3,
    dadurch gekennzeichnet, dass der erste Teilbereich (5A) in die proximale Ventilationsöffnung (7) und der zweite Teilbereich (5B) in die distale Ventilationsöffnung (6) des Belüftungskanals (5A, 5B) mündet.    Hearing aid (2) that can be worn in the ear or hearing aid with earmold that can be worn in the ear according to one of Claims 1 to 3,
    characterized in that the first partial area (5A) opens into the proximal ventilation opening (7) and the second partial area (5B) opens into the distal ventilation opening (6) of the ventilation channel (5A, 5B).         Im Ohr tragbares Hörhilfegerät (2) oder Hörhilfegerät mit im Ohr tragbarer Otoplastik nach einem der Ansprüche 1 bis 4,
    dadurch gekennzeichnet, dass in dem Belüftungskanal (5A, 5B) ein akustisches Filterelement (9) angeordnet ist.    Hearing aid (2) that can be worn in the ear or hearing aid with earmold that can be worn in the ear according to one of Claims 1 to 4,
    characterized in that an acoustic filter element (9) is arranged in the ventilation duct (5A, 5B).
    EP03000816A 2002-02-06 2003-01-14 In the ear hearing aid or hearing aid with an otoplastic to be worn in the ear Expired - Lifetime EP1335630B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10204894 2002-02-06
    DE10204894A DE10204894A1 (en) 2002-02-06 2002-02-06 Hearing aid portable in the ear or hearing aid with earmold portable in the ear

    Publications (3)

    Publication Number Publication Date
    EP1335630A2 true EP1335630A2 (en) 2003-08-13
    EP1335630A3 EP1335630A3 (en) 2003-12-03
    EP1335630B1 EP1335630B1 (en) 2005-07-06

    Family

    ID=27588434

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP03000816A Expired - Lifetime EP1335630B1 (en) 2002-02-06 2003-01-14 In the ear hearing aid or hearing aid with an otoplastic to be worn in the ear

    Country Status (6)

    Country Link
    US (1) US7079662B2 (en)
    EP (1) EP1335630B1 (en)
    AT (1) ATE299335T1 (en)
    DE (2) DE10204894A1 (en)
    DK (1) DK1335630T3 (en)
    ES (1) ES2243806T3 (en)

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    Also Published As

    Publication number Publication date
    US20030174846A1 (en) 2003-09-18
    ATE299335T1 (en) 2005-07-15
    ES2243806T3 (en) 2005-12-01
    DE10204894A1 (en) 2003-08-21
    EP1335630A3 (en) 2003-12-03
    US7079662B2 (en) 2006-07-18
    DE50300713D1 (en) 2005-08-11
    DK1335630T3 (en) 2005-10-31
    EP1335630B1 (en) 2005-07-06

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