EP2396972B1 - Earpiece - Google Patents
Earpiece Download PDFInfo
- Publication number
- EP2396972B1 EP2396972B1 EP10703473.8A EP10703473A EP2396972B1 EP 2396972 B1 EP2396972 B1 EP 2396972B1 EP 10703473 A EP10703473 A EP 10703473A EP 2396972 B1 EP2396972 B1 EP 2396972B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ear canal
- volume
- opening
- ear
- earpiece
- 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.)
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Links
- 210000000613 ear canal Anatomy 0.000 claims description 177
- 238000013016 damping Methods 0.000 claims description 12
- 230000005236 sound signal Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 210000003454 tympanic membrane Anatomy 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Classifications
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1016—Earpieces of the intra-aural type
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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
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/025—In the ear hearing aids [ITE] hearing aids
Definitions
- the invention relates to a receiver and an ear cushion for an ear canal receiver.
- Ear canal earphones are also known as in-ear earphones.
- Such listeners generally have an acoustic sound transducer which is installed in a housing which is inserted intra-aurally, that is to say into the ear canal.
- An ear cushion is often arranged around the housing, so that wearing the ear canal earpiece in the ear is more comfortable for the user.
- the ear canal earphone closes the ear canal essentially airtight.
- the sound emitted by the sound transducer thus reaches the eardrum of the user from the ear canal earpiece via the ear canal.
- the frequency response of such an arrangement can be composed of the frequency response of the listener and the frequency response of the ear.
- the ear canal closed with the ear canal receiver has a resonance behavior when excited with a certain resonance frequency.
- the exact location of this resonance frequency depends on the geometry of the ear canal, on the position at which the ear canal listener is located in the ear canal, and also on the acoustic properties of the ear canal listener.
- the looked at Resonance frequency can be approximately 7.5 kHz, for example.
- the excessive sound level in the range of around 7.5 kHz caused by the resonance behavior can have a negative effect on the sound quality.
- DE 10 2006 042 209 B3 shows an earplug-like earphone with adjustable volume of a front chamber arranged between the speaker and the housing.
- US 2008/0095393 A1 shows an in-ear earphone.
- US 2001/0050997 A1 describes an in-ear earphone with a retaining ring.
- JP 08037697 A shows a hearing aid.
- the object of the present invention is therefore to improve the sound quality of a listener.
- influences of the ear canal on the sound quality are to be compensated.
- Another or alternative task is to reduce an ear canal resonance increase.
- an (ear canal) earphone with a first side (facing the ear), an acoustic transducer for emitting a sound signal and a sound guiding element with a first end and a second end are provided.
- the first end of the sound guide element faces the acoustic transducer and the second end faces the first side of the (ear canal) receiver.
- the sound guide element is used to guide the sound signal to an ear canal of a user.
- the sound guide element has a sound guide unit with a first opening at its second end.
- the (ear canal) earphone also has at least one volume element that delimits a volume and which has at least one second opening for connecting the volume to the first side of the (ear canal) receiver.
- the second opening of the volume element connects only the ear canal and the volume element. This also means that the second opening of the volume element does not directly connect the volume defined by the volume element and an inner region of the sound guide element.
- the first opening of the sound guide element and the second opening of the volume element are, for example, arranged separately from one another.
- the sound guide element guides the sound from the acoustic transducer to the boundary between the (ear canal) earpiece and the ear canal of a user.
- the sound guide element is designed, for example, as a tube that connects the acoustic transducer to the ear canal of a user.
- the volume element is realized, for example, by a housing in which, for example, a cavity is located.
- the second opening, which connects the volume to the ear canal of a user is realized, for example, through a hole or through a tube or pipe arrangement. The tube or tube element or the second opening opens into the ear canal of a user when the ear canal receiver is inserted into the ear canal of the user.
- the ear canal of a user when the (ear canal) earphone is inserted into the ear canal, is sealed airtight by the ear canal earphone.
- the volume of the ear canal is connected to the volume of the volume element via the second opening.
- a Helmholtz resonator is formed by the acoustic mass of the opening and the volume of the volume element.
- This Helmholtz resonator can be tuned in such a way that the excessive resonance caused by a resonant frequency of the ear canal is reduced. Frequencies in this area are virtually absorbed by the resonator arrangement, which is why the arrangement is also referred to as an acoustic suction circuit.
- the resonance increase which is approximately 7.5 kHz, for example, is reduced in this way.
- the geometric dimensions of the second opening or of the tube or of the tube element determine the acoustic properties, for example the Helmholtz resonance frequency of the acoustic suction circuit.
- the first opening of the sound guide element and the at least second opening of the volume element are arranged next to one another.
- the second opening is not in the first opening, and an impairment of the acoustic properties of the sound guide element is avoided.
- the volume element is arranged around the sound guide element.
- a space-saving arrangement of volume element and sound guiding element is thus achieved, which allows miniaturization of the (ear canal) earpiece.
- the volume of the volume element can be increased with only a small expansion of the dimensions of the (ear canal) receiver.
- the volume of the volume element is adjustable.
- acoustic properties for example the resonance frequency of the Helmholtz resonator and / or the quality of the resonance circuit, can be adjusted.
- the desired frequency also depends on the geometry of the user's ear canal. Since different users have different ear canal geometries, an effective adjustment of the suction frequency can be achieved by changing the volume.
- the volume can be achieved, for example, with a small slide that moves a wall within the volume element and thus changes the volume. Alternatively, the volume can be changed by deforming the volume element.
- a damping element is attached to the at least one second opening.
- an acoustic resistance of the second opening can be changed, and thus the acoustic properties of the resonance arrangement can be changed.
- a fabric can be used as a damping element.
- the (ear canal) receiver has a first housing part which forms the volume element and the sound guide element and which has a receiving unit for the acoustic transducer.
- the first opening of the sound guide element and the at least one second opening of the volume lie on one side of the first housing part facing the user's ear canal. In particular, this prevents the second opening from being closed, for example, by the ear canal wall.
- the (ear canal) receiver has a second housing part which has a connection device for the acoustic transducer, the first housing part being able to be plugged on and removed from the second housing part. This makes it easy to replace a possibly defective acoustic transducer. Likewise, various first housing parts can be plugged onto the second housing part.
- a first housing part can thus be adapted on the one hand by its size or geometrical dimensions to the special geometry of an ear canal of a user, and on the other hand by the formation of the volume and the second opening to a special ear canal resonance exaggeration of a particular user.
- the invention also relates to an ear cushion for an (ear canal) listener.
- the ear cushion has a first end for insertion into an ear canal of a user and a second end for fastening the ear cushion to a first end of an ear canal earphone.
- the ear cushion also has a sound guide unit with a first opening at the first end of the ear cushion for guiding a sound signal from an ear canal earpiece from a second end of the ear canal earpiece to the first end of the ear canal earpiece and at least one volume element which delimits a volume and which has at least one second opening at the first end of the ear canal earpiece for connecting the volume to the ear canal having.
- Such an ear cushion is suitable, in interaction with the ear canal and the ear canal earpiece, to form a resonance arrangement from an ear canal, the volume of the volume element and the second opening, the resonance arrangement being an intrinsic resonance elevation of the ear canal, which is, for example, 7.5 kHz, decreased.
- the volume of the volume element, the second opening and the ear canal act together like a Helmholtz resonator.
- the unwanted resonance properties of the ear canal can thus be adjusted by adjusting the volume or the second Opening can be changed.
- the volume and the second opening can be dimensioned in such a way that a resonance increase which is approximately 7.5 kHz is avoided.
- the features already disclosed for the ear canal earphone according to the invention can also be applied analogously to the ear cushion according to the invention.
- the fastening device is designed as a flange. If the ear cushion is made, for example, of a deformable material, for example rubber, the ear cushion can for example be plugged onto a groove-like structure of a housing of an ear canal earphone and removed again.
- the volume element of the ear cushion is configured in such a way that the volume of the volume element does not change when the ear canal earphone is inserted into a user's ear canal.
- This can be achieved, for example, by using stabilizing ribs or by using a plastic housing that surrounds the volume. In this way, for example, it is avoided that the acoustic properties change due to an unwanted change in the volume.
- an ear canal earphone has an ear cushion according to the invention, the ear cushion being insertable onto the ear canal earphone and being removable from the ear canal earphone.
- an ear canal earphone can be equipped with a corresponding ear cushion, which on the one hand adapts to the geometric dimensions of the ear canal of the respective user and, on the other hand, its volume and second opening is set so that a resonance increase caused in the ear canal is well avoided.
- Fig. 1 shows a typical frequency response of an arrangement with an ear canal and an ear canal earphone according to the prior art.
- the frequency from 20 Hz to 20 kHz is shown logarithmically on the X axis.
- the Y-axis represents the amplitude of the frequency response from 80 to 130 dBV.
- a user's ear canal is closed by the ear canal earpiece and this arrangement has a resonance frequency. This means that certain tones, that is to say sound of certain frequencies, which the listener emits are in the resonance range of the arrangement and can therefore be perceived more intensely by a user. This resonance is a property of the ear canal listener closed ear canal.
- the exact position of the resonance frequency depends on the geometry of the ear canal, on the position at which the ear canal listener is located in the ear canal, and on the acoustic properties of the ear canal listener. This resonance is often around 7.5 kHz.
- Fig. 2 shows a schematic diagram of an ear canal earphone 51 according to a first embodiment.
- An ear canal 50 is sealed airtight with an ear canal earpiece 51.
- the ear canal earphone 51 has a volume element 55, a tube 56, a sound transducer 52 and a sound guide element 53.
- the volume element 55 delimits a volume 65.
- the volume 65 is connected to a second volume 67 of the ear canal 50 via the tube 56 by an airtight seal 66 of the ear canal 50.
- the ear canal 50 is closed off on the side opposite the termination 66 with an eardrum 68.
- the acoustic sound transducer 52 is connected to the second volume 67 of the ear canal 50 via the sound guide element 53 through the airtight seal 66.
- the ear canal earpiece 51 also has an electrical connection 62, via which an electrical signal is fed to the acoustic sound transducer 52, which converts the acoustic sound transducer 52 into a corresponding sound.
- Sound waves pass from the acoustic transducer 52 via the sound guide element 53, which is formed, for example, by a tube, into the second volume 67 of the ear canal 50.
- the tube 56 which connects the second volume 67 to the volume 65, is finally closed 66 of the ear canal is closed, the arrangement consisting of the sound guide element 53 and the ear canal 50 shows a certain resonance behavior.
- the user can perceive sound waves in the resonance frequency range more than sound waves in other frequency ranges.
- the range of the resonance increase caused by the resonance is, for example, between 6 and 9 kHz (cf. Fig. 1 ). However, the exact range depends in particular on the geometric dimensions of the ear canal and the sound guide element 53, which are individually different.
- the volume 65 together with the tube 56 acts as an acoustic suction circuit that sucks off certain frequencies and thus increases the resonance of the arrangement consisting of sound guide element 53 and second volume 67 at least decreased.
- the air mass which is located within the tube 56, swings against the elasticity of the air mass, which is located in the volume 65.
- the volume element 55 and the tube 56 together form a resonator, which is also called a Helmholtz resonator.
- the desired parameters of the resonator can be set by the special design of the volume element, which defines the volume size, for example, and the special design of the tube 56, for example by length, cross section, and inserted damping material.
- a parameter is, for example, the frequency that the resonator is to extract from the arrangement consisting of the sound guide element and the second volume 67.
- the resonator is thus tuned in such a way that its resonance corresponds to the disturbing resonance, which is in the range from approximately 6 to 9 kHz.
- the resonator thus acts as an acoustic suction circuit, which reduces the sound pressure in the ear canal in the area of the disturbing resonance frequency.
- Fig. 3 shows a sectional view of an ear canal earphone 1 according to a second embodiment.
- the ear canal earphone 1 has a first side 13 (facing the ear) which is used for insertion into an ear canal of a user.
- the ear canal earphone 1 further comprises a first housing part 8, which has a volume element 5 and a sound guide element 3.
- the sound guide element 3 has a first end 14, a second end 15 and a through opening 4.
- the through opening can be designed as a sound guide unit or a sound guide channel.
- the first end 14 points to an acoustic transducer 2 and the second end 15 to the first side 13 of the ear canal earphone 1.
- the sound guiding element 3 with the sound guiding unit which merges into the opening 4 serves to guide a sound signal to an ear canal of a user.
- the first housing part 8 also has a receiving unit 9 for the acoustic transducer 2, a second opening 6 of the volume element 5 and the first opening 4 of the sound guide element 3.
- a damping element 7, which is formed from a fabric, can be provided in the second opening 6.
- the resonance frequency of the resonator which consists of the second opening 6 and the volume element 5, is determined by the choice of the damping element and the dimensions of the second opening.
- the size of a volume 65 of the volume element 5 also serves to set parameters of the resonator. Such a parameter is, for example, the quality of the resonator.
- the volume element 5 can be arranged in a ring around the sound guide element 3. A space-saving arrangement of sound guide element 3 and volume element 5 is thus achieved.
- the first opening 4 of the sound guide unit or channel lies on one side 10 of the first housing part.
- the second opening 6 of the volume element 5 is also on the side 10.
- the first opening 4 and the second opening 6 are arranged side by side on the side 10 of the first housing part. In this way, an airtight seal of the ear canal, a connection of the first opening to the ear canal and a second opening separate from the first opening and connected to the ear canal are realized.
- the second opening 6 can open into the ear canal, but it should not open into the sound guide element 3. If the second opening 6 opened into the sound guide element 3, the sound guide would lose its effect and the acoustic suction circuit would adversely affect the frequency response of the listener.
- the first housing part 8 can be plugged onto a second housing part 11.
- An electrical signal is supplied to a connection device 12 via the second housing part 11.
- This electrical signal is converted by the acoustic transducer 2 into a sound signal that propagates along the sound guide.
- the volume 65 of the volume element 5 can be made adjustable. For example, a slider is arranged in the volume element 5, which can change the size of the volume 65.
- the acoustic properties of the resonator, which consists of the volume element 5 and the second opening 6, can thus be adjusted.
- the first housing part 8 is removable from the second housing part 11 and can be plugged onto the second housing part 11. In this way, for example, the acoustic transducer 2 can be replaced in the event of a defect.
- first housing parts can likewise be plugged onto the second housing part 11.
- the different housing parts differ, for. B. in the outer dimension, which is to adapt to a particular ear canal, and in the dimensions of the volume 65 and the opening 6, which are to be adapted to a user-specific ear canal resonance.
- a first housing part can thus be selected or adapted with regard to a special user or his special ear canal.
- Fig. 4 shows a first typical frequency response 71 of an arrangement with an ear canal earphone according to the invention compared to a second typical frequency response 70 of an arrangement with an ear canal earpiece according to the prior art.
- a frequency of 20 Hz to 20 kHz is shown logarithmically on the X axis, and an amplitude of 90 to 140 dB is shown on the Y axis.
- Fig. 5 shows a sectional view of an ear cushion 100 and an ear canal earphone 101 according to a third embodiment.
- the ear cushion 100 has a first end 113 for insertion into an ear canal of a user and a second end 114.
- the ear canal earphone 101 has a first end 115 and a second end 116.
- the second end 114 serves to fasten the ear cushion 100 to the first end 115 of the ear canal earphone 101.
- a volume element 105 and a second opening 106 of the volume element 105 are integrated into the ear cushion 100.
- the second opening 106 is located at the first end 115 of the ear canal earphone 101.
- the ear cushion also has a first opening 104 through which the sound can reach an ear canal through a sound guiding unit 103.
- the first opening 104 is located at the first end 113 of the ear cushion 100.
- the sound guide unit 103 serves to guide a sound signal from an ear canal earphone from the second end 116 of the ear canal earphone 101 to the first end 115 of the ear canal earphone 101.
- the volume of the volume element 105 should not change when the ear canal earphone 101 is inserted into an ear canal. B. by introducing ribs or by a plastic cover that surrounds or forms the volume.
- the ear cushion 100 has a fastening device which is designed, for example, as a first flange 120. With the first flange 120, the ear cushion can be attached to a first housing part 108 of the ear canal earphone 101.
- the first housing part 108 forms the sound guide unit 103 and has a second flange 121, which is used to hold the first flange 120 of the ear cushion 100.
- the ear cushion 100 is made of a rubber-like material, so that the ear cushion can be put over the first housing part 108 and the rubber-like flange 120 bears against the second flange 121. In this way, plugging and unplugging the ear cushion from the first housing part 108 is made possible.
- the first opening 104 of the sound guiding unit 103 and the second opening 106 of the volume unit 105 of the ear cushion 100 lie on a side 110 of the ear canal earphone which points in the direction of a user's ear canal.
- the first opening 104 and the second opening 106 are arranged separately from one another, so that the effect of the resonator, which consists of the volume element 105 and the second opening 106, is developed can.
- the volume of the volume unit 105 can be made adjustable. Different ear cushions can differ in their external dimensions, their second opening and their volume unit. The ear cushion can thus adapt to the dimensions of an individual ear canal of a user and at the same time a desired resonance effect, which is adapted to the geometry of the individual ear canal, can be realized by a suitable choice of the volume and the second opening 106.
- the first housing part 108 has a receiving unit 109 for an acoustic transducer 102.
- the first housing part 108 can be connected to a second housing part 111 so that it can be plugged on and pulled off. In this way, the acoustic transducer 102 can be easily replaced, for example in the event of a defect.
- an electrical signal is fed to the acoustic transducer 102 via a connection device 112, which converts the acoustic transducer 102 into a sound signal, which can reach an ear canal along the sound guide unit 103 through the first opening 104.
- a resonance increase in particular in the range between 6 and 9 kHz, which is also caused by the individual ear canal, is realized by the resonance unit located in the ear cushion 100, which consists of the volume element 105 and the second opening 106.
- a damping element can also be introduced into the second opening 106 in order to change the acoustic properties of the resonator, for example its quality or its resonance frequency.
- contamination of the second opening 106 or the volume element 105 can be achieved with such a damping material.
- the volume of the ear pad 100 can also be made adjustable.
- Fig. 6 shows a schematic representation of a receiver according to a fourth embodiment. While the exemplary embodiments 1 to 3 relate to ear canal earphones, the fourth exemplary embodiment relates to an ear-enclosing earpiece.
- the surrounding listener has an ear cushion 210, a baffle 220, a volume 230 enclosed by the ear cushions 210, the baffle 220 and the head 300 or ear 310 of the listener, which is connected to a further volume 250 via a pipe 240.
- the tube 240 acts as an acoustic mass.
- Fig. 7 shows a schematic plan view of a receiver according to a fourth embodiment.
- the receiver according to the fourth embodiment is essentially based on the listeners according to the first to third embodiments.
- a solid 400 arranged in a ring is shown. This solid has a first volume 410 and a second volume 420, which are divided into two independent volumes by a first and second partition wall 430, 440.
- the first and second volumes together with the openings leading to them, have an independent Helmholtz resonator.
- These two resonators can be tuned independently of one another. This is advantageous because two frequencies can be reduced.
- the size of the first and second volumes and the number and size of the openings connected to them can be selected independently of one another.
- more than two volumes can be provided.
- the annularly arranged solid according to the fourth exemplary embodiment can be used in an ear canal earpiece according to the first, second or third exemplary embodiment.
- Fig. 8 shows a sectional view of an ear canal earphone according to a fifth embodiment.
- the ear canal earphone according to the fifth embodiment essentially corresponds to the ear canal earphone according to the second embodiment of FIG Fig. 3 .
- the volume 5 or the volume unit 5 is configured in a ring shape
- the volume element 5 in accordance with the fifth exemplary embodiment can be designed in the form of a circular segment.
- the volume element 5 according to the fifth exemplary embodiment can have a rectangular or circular cross section.
- the volume element 5 according to the fifth exemplary embodiment is provided, for example, only on one side or as a section.
- a damping element can optionally be provided at the opening of the volume element 5.
- the opening of the volume element 5 is provided at the end of the ear cushion or earpiece facing the ear.
- Fig. 9 shows a sectional view of an earphone according to a sixth embodiment.
- the earphone or ear canal earphone according to the sixth embodiment can be on the ear canal earphone according to the second embodiment of Fig. 3 based.
- the ear canal earphone according to the sixth exemplary embodiment has no damping element at the opening of the volume element.
- the volume element 5 can be configured as in the second embodiment. In other words, the volume element can be configured in a ring shape or at least partially in a ring shape.
- Fig. 10 shows a plan view of a receiver according to the seventh embodiment.
- the receiver according to the seventh exemplary embodiment can be based on a receiver according to one of the exemplary embodiments 1 to 6.
- the second end 15 of the sound guide element and the first housing part 8 are shown.
- the volume element 5 is optionally shown with a damping element. It can be seen here that the volume element 5 is only provided on one side of the receiver and has an at least partially circular cross section.
- the opening of the volume element 5 is provided next to the opening 15 of the sound guide element (on the side facing the ear).
- Fig. 11 shows a sectional view of an ear canal earphone according to an eighth embodiment.
- the ear canal earphone according to the eighth exemplary embodiment can be based on an ear canal earphone according to one of the exemplary embodiments 1 to 7.
- the volume unit 5 with its opening is not provided outside the sound guide unit (as in exemplary embodiments 1 to 7), but inside the sound guide unit.
- the volume unit 5 has a single opening which faces the first side of the receiver 13.
- the ear canal earphone according to the eighth exemplary embodiment is advantageous because a compact and small sound guide element can thus be provided, since the volume element is located within the sound guide unit.
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Headphones And Earphones (AREA)
- Telephone Set Structure (AREA)
Description
Die Erfindung betrifft einen Hörer sowie ein Ohrpolster für einen Ohrkanal-Hörer.The invention relates to a receiver and an ear cushion for an ear canal receiver.
Ohrkanal-Hörer sind auch als In-Ear-Hörer bekannt. Derartige Hörer weisen im Allgemeinen einen akustischen Schallwandler auf, der in ein Gehäuse eingebaut ist, das intra-aural, also in den Ohrkanal, eingesetzt wird. Um das Gehäuse wird häufig ein Ohrpolster angeordnet, so dass das Tragen des Ohrkanal-Hörers im Ohr für den Anwender angenehmer wird. An dem Gehäuse befindet sich ein elektrischer Anschluss für ein Kabel, das ein elektrisches Signal zu dem Schallwandler führt.Ear canal earphones are also known as in-ear earphones. Such listeners generally have an acoustic sound transducer which is installed in a housing which is inserted intra-aurally, that is to say into the ear canal. An ear cushion is often arranged around the housing, so that wearing the ear canal earpiece in the ear is more comfortable for the user. There is an electrical connection for a cable on the housing, which leads an electrical signal to the sound transducer.
Wenn ein derartiger Ohrkanal-Hörer in den Ohrkanal eines Anwenders eingesetzt ist, so verschließt der Ohrkanal-Hörer den Ohrkanal im Wesentlichen luftdicht. Der von dem Schallwandler abgestrahlte Schall gelangt so von dem Ohrkanal-Hörer über den Ohrkanal zu dem Trommelfell des Anwenders.If such an ear canal earphone is inserted into the ear canal of a user, the ear canal earphone closes the ear canal essentially airtight. The sound emitted by the sound transducer thus reaches the eardrum of the user from the ear canal earpiece via the ear canal.
Der Frequenzgang einer solchen Anordnung lässt sich aus dem Frequenzgang des Hörers und dem Frequenzgang des Ohres zusammensetzen. Der mit dem Ohrkanal-Hörer verschlossene Ohrkanal weist ein Resonanzverhalten bei einer Anregung mit einer bestimmten Resonanzfrequenz auf. Die genaue Lage dieser Resonanzfrequenz ist abhängig von der Geometrie des Ohrkanals, von der Position, an der sich der Ohrkanal-Hörer im Ohrkanal befindet, und auch von akustischen Eigenschaften des Ohrkanal-Hörers. Die betrachtete Resonanzfrequenz kann beispielsweise in etwa bei 7,5 kHz liegen. Die durch das Resonanzverhalten hervorgerufene Überhöhung des Schallpegels im Bereich von etwa 7,5 kHz kann sich nachteilig auf die Klangqualität auswirken.The frequency response of such an arrangement can be composed of the frequency response of the listener and the frequency response of the ear. The ear canal closed with the ear canal receiver has a resonance behavior when excited with a certain resonance frequency. The exact location of this resonance frequency depends on the geometry of the ear canal, on the position at which the ear canal listener is located in the ear canal, and also on the acoustic properties of the ear canal listener. The looked at Resonance frequency can be approximately 7.5 kHz, for example. The excessive sound level in the range of around 7.5 kHz caused by the resonance behavior can have a negative effect on the sound quality.
Aufgabe der vorliegenden Erfindung ist es somit, die Klangqualität eines Hörers zu verbessern. Insbesondere sollen Einflüsse des Ohrkanals auf die Klangqualität kompensiert werden. Eine weitere oder alternative Aufgabe besteht darin, eine Ohrkanal-Resonanzüberhöhung zu vermindern.The object of the present invention is therefore to improve the sound quality of a listener. In particular, influences of the ear canal on the sound quality are to be compensated. Another or alternative task is to reduce an ear canal resonance increase.
Diese Aufgabe wird durch einen Hörer gemäß Anspruch gelöst. Ausführungsbeispiele, die sich nur auf den Ohrpolster beziehen, sind nicht Teil der Erfindung.This task is solved by a handset according to claim. Embodiments that relate only to the ear pads are not part of the invention.
Somit wird ein (Ohrkanal-)Hörer mit einer ersten (dem Ohr zugewandten) Seite, einem akustischen Wandler zur Abgabe eines Schallsignals und einem Schallführungselement mit einem ersten Ende und einem zweiten Ende vorgesehen. Dabei weist das erste Ende des Schallführungselements zum akustischen Wandler und das zweite Ende zur ersten Seite des (Ohrkanal-)Hörers. Das Schallführungselement dient zur Führung des Schallsignals zu einem Ohrkanal eines Anwenders. Dabei weist das Schallführungselement eine Schallführungseinheit mit einer ersten Öffnung an seinem zweiten Ende auf. Der (Ohrkanal-)Hörer weist auch wenigstens ein Volumenelement auf, das ein Volumen begrenzt und das wenigstens eine zweite Öffnung zum Verbinden des Volumens mit der ersten Seite des (Ohrkanal-)Hörers aufweist.Thus, an (ear canal) earphone with a first side (facing the ear), an acoustic transducer for emitting a sound signal and a sound guiding element with a first end and a second end are provided. The first end of the sound guide element faces the acoustic transducer and the second end faces the first side of the (ear canal) receiver. The sound guide element is used to guide the sound signal to an ear canal of a user. The sound guide element has a sound guide unit with a first opening at its second end. The (ear canal) earphone also has at least one volume element that delimits a volume and which has at least one second opening for connecting the volume to the first side of the (ear canal) receiver.
Wird ein derartiger Hörer wie z. B. ein Ohrkanal-Hörer durch einen Anwender verwendet, so verbindet die zweite Öffnung des Volumenelementes ausschließlich den Ohrkanal und das Volumenelement. Dies bedeutet auch, dass die zweite Öffnung des Volumenelements nicht das durch das Volumenelement definierte Volumen und einen Innenbereich des Schallführungselements direkt verbindet. Die erste Öffnung des Schallführungselements und die zweite Öffnung des Volumenelements sind beispielsweise getrennt voneinander angeordnet.Is such a handset such. B. an ear canal earpiece used by a user, the second opening of the volume element connects only the ear canal and the volume element. This also means that the second opening of the volume element does not directly connect the volume defined by the volume element and an inner region of the sound guide element. The first opening of the sound guide element and the second opening of the volume element are, for example, arranged separately from one another.
Das Schallführungselement führt den Schall von dem akustischen Wandler zu der Grenze zwischen (Ohrkanal-)Hörer und Ohrkanal eines Anwenders. Das Schallführungselement ist beispielsweise als Röhre ausgeführt, die den akustischen Wandler mit dem Ohrkanal eines Anwenders verbindet. Das Volumenelement ist beispielsweise durch ein Gehäuse, in dem sich beispielsweise ein Hohlraum befindet, realisiert. Die zweite Öffnung, die das Volumen mit dem Ohrkanal eines Anwenders verbindet, ist beispielsweise durch ein Loch oder auch durch eine Röhre oder Rohranordnung realisiert. Das Rohr bzw. Rohrelement bzw. die zweite Öffnung mündet in den Ohrkanal eines Anwenders, wenn der Ohrkanal-Hörer in den Ohrkanal des Anwenders eingesetzt ist.The sound guide element guides the sound from the acoustic transducer to the boundary between the (ear canal) earpiece and the ear canal of a user. The sound guide element is designed, for example, as a tube that connects the acoustic transducer to the ear canal of a user. The volume element is realized, for example, by a housing in which, for example, a cavity is located. The second opening, which connects the volume to the ear canal of a user, is realized, for example, through a hole or through a tube or pipe arrangement. The tube or tube element or the second opening opens into the ear canal of a user when the ear canal receiver is inserted into the ear canal of the user.
Mit dem erfindungsgemäßen (Ohrkanal-)Hörer wird erreicht, dass der Ohrkanal eines Anwenders, wenn der (Ohrkanal-)Hörer in den Ohrkanal eingesetzt ist, durch den Ohrkanal-Hörer luftdicht verschlossen ist. Über die zweite Öffnung wird das Volumen des Ohrkanals mit dem Volumen des Volumenelements verbunden. Ein Helmholtz-Resonator wird gebildet durch die akustische Masse der Öffnung und das Volumen des Volumenelementes.With the (ear canal) earphone according to the invention it is achieved that the ear canal of a user, when the (ear canal) earphone is inserted into the ear canal, is sealed airtight by the ear canal earphone. The volume of the ear canal is connected to the volume of the volume element via the second opening. A Helmholtz resonator is formed by the acoustic mass of the opening and the volume of the volume element.
Dieser Helmholtz-Resonator kann so abgestimmt werden, dass die Resonanzüberhöhung, die durch eine Resonanzfrequenz des Ohrkanals verursacht wird, verringert wird. Frequenzen in diesem Bereich werden von der Resonatoranordnung quasi aufgesogen, weshalb die Anordnung auch als akustischer Saugkreis bezeichnet wird. Die Resonanzüberhöhung, die beispielsweise bei etwa 7,5 kHz liegt, wird auf diese Weise vermindert.This Helmholtz resonator can be tuned in such a way that the excessive resonance caused by a resonant frequency of the ear canal is reduced. Frequencies in this area are virtually absorbed by the resonator arrangement, which is why the arrangement is also referred to as an acoustic suction circuit. The resonance increase, which is approximately 7.5 kHz, for example, is reduced in this way.
Die geometrischen Abmessungen der zweiten Öffnung bzw. des Rohres bzw. des Rohrelements bestimmen die akustischen Eigenschaften, beispielsweise die Helmholtz-Resonanzfrequenz des akustischen Saugkreises.The geometric dimensions of the second opening or of the tube or of the tube element determine the acoustic properties, for example the Helmholtz resonance frequency of the acoustic suction circuit.
Gemäß einem Aspekt der vorliegenden Erfindung sind die erste Öffnung des Schallführungselements und die wenigstens zweite Öffnung des Volumenelements nebeneinander angeordnet. Somit liegt die zweite Öffnung nicht in der ersten Öffnung, und eine Beeinträchtigung der akustischen Eigenschaften des Schallführungselementes wird so vermieden.According to one aspect of the present invention, the first opening of the sound guide element and the at least second opening of the volume element are arranged next to one another. Thus, the second opening is not in the first opening, and an impairment of the acoustic properties of the sound guide element is avoided.
Gemäß einem Aspekt der vorliegenden Erfindung ist das Volumenelement um das Schallführungselement herum angeordnet. Somit wird eine platzsparende Anordnung von Volumenelement und Schallführungselement erreicht, was eine Miniaturisierung des (Ohrkanal-)Hörers erlaubt. Zudem kann das Volumen des Volumenelements bei nur geringer Ausdehnung der Abmessungen des (Ohrkanal-)Hörers vergrößert werden.According to one aspect of the present invention, the volume element is arranged around the sound guide element. A space-saving arrangement of volume element and sound guiding element is thus achieved, which allows miniaturization of the (ear canal) earpiece. In addition, the volume of the volume element can be increased with only a small expansion of the dimensions of the (ear canal) receiver.
Gemäß einem Aspekt der vorliegenden Erfindung ist das Volumen des Volumenelementes einstellbar. Durch die Einstellung des Volumens bzw. der Volumengröße können akustische Eigenschaften, beispielsweise die Resonanzfrequenz des Helmholtz-Resonators und/oder die Güte des Resonanzkreises, eingestellt werden. Die gewünschte Frequenz hängt auch von der Geometrie des jeweiligen Ohrkanals des Anwenders ab. Da verschiedene Anwender verschiedene Geometrien des Ohrkanals aufweisen, kann somit eine wirksame Anpassung der Saugfrequenz durch eine Veränderung des Volumens erreicht werden. Das Volumen kann beispielsweise mit einem kleinen Schieber, der eine Wand innerhalb des Volumenelementes bewegt und somit das Volumen verändert, erreicht werden. Alternativ kann eine Veränderung des Volumens durch ein Verformen des Volumenelementes erreicht werden.According to one aspect of the present invention, the volume of the volume element is adjustable. By adjusting the volume or the volume size, acoustic properties, for example the resonance frequency of the Helmholtz resonator and / or the quality of the resonance circuit, can be adjusted. The desired frequency also depends on the geometry of the user's ear canal. Since different users have different ear canal geometries, an effective adjustment of the suction frequency can be achieved by changing the volume. The volume can be achieved, for example, with a small slide that moves a wall within the volume element and thus changes the volume. Alternatively, the volume can be changed by deforming the volume element.
Gemäß einem Aspekt der vorliegenden Erfindung ist ein Dämpfungselement an der wenigstens einen zweiten Öffnung angebracht. Auf diese Weise kann ein akustischer Widerstand der zweiten Öffnung verändert werden, und somit können die akustischen Eigenschaften der Resonanzanordnung verändert werden. Als Dämpfungselement kann beispielsweise ein Gewebe verwendet werden.According to one aspect of the present invention, a damping element is attached to the at least one second opening. In this way, an acoustic resistance of the second opening can be changed, and thus the acoustic properties of the resonance arrangement can be changed. For example, a fabric can be used as a damping element.
Gemäß einem weiteren Aspekt der vorliegenden Erfindung weist der (Ohrkanal-)Hörer ein erstes Gehäuseteil auf, das das Volumenelement und das Schallführungselement bildet und das eine Aufnahmeeinheit für den akustischen Wandler aufweist.According to a further aspect of the present invention, the (ear canal) receiver has a first housing part which forms the volume element and the sound guide element and which has a receiving unit for the acoustic transducer.
Gemäß einem Aspekt der vorliegenden Erfindung liegen die erste Öffnung des Schallführungselements und die wenigstens eine zweite Öffnung des Volumens auf einer Seite des ersten Gehäuseteils, die dem Ohrkanal des Anwenders zugewandt ist. Somit wird insbesondere vermieden, dass die zweite Öffnung beispielsweise von der Ohrkanalwand verschlossen wird.According to one aspect of the present invention, the first opening of the sound guide element and the at least one second opening of the volume lie on one side of the first housing part facing the user's ear canal. In particular, this prevents the second opening from being closed, for example, by the ear canal wall.
Gemäß einem Aspekt der vorliegenden Erfindung weist der (Ohrkanal-)Hörer ein zweites Gehäuseteil auf, das eine Anschlusseinrichtung für den akustischen Wandler aufweist, wobei das erste Gehäuseteil auf das zweite Gehäuseteil aufsteckbar und abziehbar ist. Somit wird eine leichte Auswechselbarkeit eines möglicherweise defekten akustischen Wandlers erreicht. Ebenso können verschiedene erste Gehäuseteile auf das zweite Gehäuseteil gesteckt werden. Diese unterscheiden sich beispielsweise durch ihre äußeren Abmessungen, die entsprechend der Geometrie des Ohrkanals des jeweiligen Anwenders gewählt werden oder durch die Geometrie der zweiten Öffnung und/oder des Volumens, wodurch die akustischen Eigenschaften, beispielsweise die Resonanzfrequenz der gesamten akustischen Anordnung oder die Güte der Anordnung, bestehend aus (Ohrkanal-)Hörer und Ohrkanal, veränderbar sind. Ein erster Gehäuseteil kann somit einerseits durch seine Größe bzw. geometrischen Abmessungen an die spezielle Geometrie eines Ohrkanals eines Anwenders als auch durch die Ausbildung des Volumens und der zweiten Öffnung an eine spezielle Ohrkanal-Resonanzüberhöhung eines bestimmten Anwenders angepasst werden.According to one aspect of the present invention, the (ear canal) receiver has a second housing part which has a connection device for the acoustic transducer, the first housing part being able to be plugged on and removed from the second housing part. This makes it easy to replace a possibly defective acoustic transducer. Likewise, various first housing parts can be plugged onto the second housing part. These differ, for example, by their external dimensions, which are selected in accordance with the geometry of the ear canal of the respective user, or by the geometry of the second opening and / or the volume, as a result of which the acoustic properties, for example the resonance frequency of the overall acoustic arrangement or the quality of the arrangement , consisting of (ear canal) earpiece and ear canal, can be changed. A first housing part can thus be adapted on the one hand by its size or geometrical dimensions to the special geometry of an ear canal of a user, and on the other hand by the formation of the volume and the second opening to a special ear canal resonance exaggeration of a particular user.
Die Erfindung betrifft ebenfalls ein Ohrpolster für einen (Ohrkanal-)Hörer. Das Ohrpolster weist ein erstes Ende zum Einführen in einen Ohrkanal eines Anwenders und ein zweites Ende zur Befestigung des Ohrpolsters an einem ersten Ende eines Ohrkanal-Hörers auf, Das Ohrpolster weist ebenfalls eine Schallführungseinheit mit einer ersten Öffnung am ersten Ende des Ohrpolster zur Führung eines Schallsignals von einem Ohrkanal-Hörer von einem zweiten Ende des Ohrkanal-Hörers zum ersten Ende des Ohrkanal-Hörers und wenigstens ein Volumenelement auf, das ein Volumen begrenzt und das wenigstens eine zweite Öffnung am ersten Ende des Ohrkanal-Hörers zum Verbinden des Volumens mit dem Ohrkanal aufweist.The invention also relates to an ear cushion for an (ear canal) listener. The ear cushion has a first end for insertion into an ear canal of a user and a second end for fastening the ear cushion to a first end of an ear canal earphone. The ear cushion also has a sound guide unit with a first opening at the first end of the ear cushion for guiding a sound signal from an ear canal earpiece from a second end of the ear canal earpiece to the first end of the ear canal earpiece and at least one volume element which delimits a volume and which has at least one second opening at the first end of the ear canal earpiece for connecting the volume to the ear canal having.
Ein derartiges Ohrpolster ist geeignet, im Zusammenspiel mit dem Ohrkanal und dem Ohrkanal-Hörer eine Resonanzanordnung aus einem Ohrkanal, dem Volumen des Volumenelements und der zweiten Öffnung zu bilden, wobei die Resonanzanordnung eine Eigenresonanzüberhöhung des Ohrkanals, die beispielsweise bei 7,5 kHz liegt, verringert. Ist ein derartiges Ohrpolster zusammen mit einem Ohrkanal-Hörer in den Ohrkanal eines Anwenders eingesetzt, wirken das Volumen des Volumenelementes, die zweite Öffnung sowie der Ohrkanal zusammen wie ein Helmholtz-Resonator. Die ungewollten Resonanzeigenschaften des Ohrkanals können somit durch Anpassung des Volumens bzw. der zweiten Öffnung verändert werden. Insbesondere können das Volumen und die zweite Öffnung so dimensioniert werden, dass eine Resonanzüberhöhung, die bei etwa 7,5 kHz liegt, vermieden wird.Such an ear cushion is suitable, in interaction with the ear canal and the ear canal earpiece, to form a resonance arrangement from an ear canal, the volume of the volume element and the second opening, the resonance arrangement being an intrinsic resonance elevation of the ear canal, which is, for example, 7.5 kHz, decreased. If such an ear cushion is inserted into the ear canal of a user together with an ear canal earpiece, the volume of the volume element, the second opening and the ear canal act together like a Helmholtz resonator. The unwanted resonance properties of the ear canal can thus be adjusted by adjusting the volume or the second Opening can be changed. In particular, the volume and the second opening can be dimensioned in such a way that a resonance increase which is approximately 7.5 kHz is avoided.
Die für den erfindungsgemäßen Ohrkanal-Hörer bereits offenbarten Merkmale können sinngemäß auch auf das erfindungsgemäße Ohrpolster übertragen werden. Dabei ist insbesondere das nebeneinander Anordnen der ersten Öffnung und der zweiten Öffnung, das Anordnen des Volumenelementes um das Schallführungselement herum, die Einstellbarkeit des Volumens des Volumenelementes sowie die Verwendung eines Dämpfungselementes gemeint.The features already disclosed for the ear canal earphone according to the invention can also be applied analogously to the ear cushion according to the invention. This means in particular the side by side arrangement of the first opening and the second opening, the arrangement of the volume element around the sound guide element, the adjustability of the volume of the volume element and the use of a damping element.
Gemäß einem Aspekt der vorliegenden Erfindung ist die Befestigungseinrichtung als ein Flansch ausgebildet. Ist das Ohrpolster beispielsweise aus einem verformbaren Material, beispielsweise Gummi, ausgebildet, so kann das Ohrpolster beispielsweise auf eine nutartige Struktur eines Gehäuses eines Ohrkanal-Hörers gesteckt und wieder abgezogen werden.According to one aspect of the present invention, the fastening device is designed as a flange. If the ear cushion is made, for example, of a deformable material, for example rubber, the ear cushion can for example be plugged onto a groove-like structure of a housing of an ear canal earphone and removed again.
Gemäß einem weiteren Aspekt ist das Volumenelement des Ohrpolsters derart ausgestaltet, dass sich das Volumen des Volumenelements beim Einsetzen des Ohrkanal-Hörers in den Ohrkanal eines Anwenders nicht verändert. Dies kann beispielsweise durch die Verwendung von Stabilisierungsrippen oder durch die Verwendung eines Kunststoffgehäuses, das das Volumen ummantelt, erreicht werden, Auf diese Art wird beispielsweise vermieden, dass sich die akustischen Eigenschaften durch eine ungewollte Änderung des Volumens verändern.According to a further aspect, the volume element of the ear cushion is configured in such a way that the volume of the volume element does not change when the ear canal earphone is inserted into a user's ear canal. This can be achieved, for example, by using stabilizing ribs or by using a plastic housing that surrounds the volume. In this way, for example, it is avoided that the acoustic properties change due to an unwanted change in the volume.
Gemäß einem weiteren Aspekt der Erfindung weist ein Ohrkanal-Hörer ein erfindungsgemäßes Ohrpolster auf, wobei das Ohrpolster auf den Ohrkanal-Hörer steckbar und vom Ohrkanal-Hörer abziehbar ist. Auf diese Weise kann ein beschädigtes Ohrpolster leicht ausgewechselt werden und ein Ohrkanal-Hörer kann abhängig von dem jeweiligen Anwender mit einem entsprechenden Ohrpolster ausgestattet werden, das sich einerseits an die geometrischen Abmessungen des Ohrkanals des jeweiligen Anwenders anpasst und zum anderen dessen Volumen und zweite Öffnung derart eingestellt ist, dass eine im Ohrkanal verursachte Resonanzüberhöhung gut vermieden wird.According to a further aspect of the invention, an ear canal earphone has an ear cushion according to the invention, the ear cushion being insertable onto the ear canal earphone and being removable from the ear canal earphone. In this way, a damaged ear cushion can be easily replaced and, depending on the user, an ear canal earphone can be equipped with a corresponding ear cushion, which on the one hand adapts to the geometric dimensions of the ear canal of the respective user and, on the other hand, its volume and second opening is set so that a resonance increase caused in the ear canal is well avoided.
Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.Developments of the invention are specified in the subclaims.
Die Ausführungsbeispiele und Vorteile der vorliegenden Erfindung werden nachstehend unter Bezugnahme auf die beigefügten Zeichnungen näher erläutert.
- Fig. 1
- zeigt einen typischen Frequenzgang einer Anordnung mit einem Ohrkanal-Hörer und einem Ohrkanal gemäß dem Stand der Technik,
- Fig. 2
- zeigt eine Prinzipdarstellung eines Ohrkanal-Hörers gemäß einem ersten Ausführungsbeispiel,
- Fig. 3
- zeigt eine Schnittansicht eines Ohrkanal-Hörers gemäß einem zweiten Ausführungsbeispiel,
- Fig. 4
- zeigt einen typischen Frequenzgang einer Anordnung mit Ohrkanal und einem erfindungsgemäßen Ohrkanal-Hörer,
- Fig. 5
- zeigt eine Schnittansicht eines Ohrpolsters und eines Ohrkanal-Hörers gemäß einem dritten Ausführungsbeispiel.
- Fig. 6
- zeigt eine schematische Ansicht eines Hörers gemäß einem vierten Ausführungsbeispiel,
- Fig. 7
- zeigt eine Draufsicht auf einen Hörer gemäß einem vierten Ausführungsbeispiel,
- Fig. 8
- zeigt eine Schnittansicht eines Ohrkanalhörers gemäß einem fünften Ausführungsbeispiel,
- Fig. 9
- zeigt eine Schnittansicht eines Ohrkanalhörers gemäß einem sechsten Ausführungsbeispiel,
- Fig. 10
- zeigt eine Draufsicht auf einen Hörer gemäß einem siebten Ausführungsbeispiel, und
- Fig. 11
- zeigt eine Schnittansicht eines Ohrhörers gemäß einem achten Ausführungsbeispiel.
- Fig. 1
- shows a typical frequency response of an arrangement with an ear canal earphone and an ear canal according to the prior art,
- Fig. 2
- 1 shows a basic illustration of an ear canal earphone according to a first exemplary embodiment,
- Fig. 3
- 1 shows a sectional view of an ear canal earphone according to a second exemplary embodiment,
- Fig. 4
- shows a typical frequency response of an arrangement with an ear canal and an ear canal earphone according to the invention,
- Fig. 5
- shows a sectional view of an ear cushion and an ear canal earphone according to a third embodiment.
- Fig. 6
- shows a schematic view of a receiver according to a fourth embodiment,
- Fig. 7
- shows a top view of a receiver according to a fourth embodiment,
- Fig. 8
- 1 shows a sectional view of an ear canal earphone according to a fifth exemplary embodiment,
- Fig. 9
- 1 shows a sectional view of an ear canal earphone according to a sixth exemplary embodiment,
- Fig. 10
- shows a plan view of a receiver according to a seventh embodiment, and
- Fig. 11
- shows a sectional view of an earphone according to an eighth embodiment.
Schallwellen gelangen vom akustischen Wandler 52 über das Schallführungselement 53, das beispielsweise durch ein Röhrchen ausgebildet ist, in das zweite Volumen 67 des Ohrkanals 50. Unter der Annahme, dass das Röhrchen 56, das das zweite Volumen 67 mit dem Volumen 65 verbindet, im Abschluss 66 des Ohrkanals verschlossen ist, zeigt die Anordnung, die aus dem Schallführungselement 53 und dem Ohrkanal 50 besteht, ein bestimmtes Resonanzverhalten. Das heißt, akustische Wellen einer bestimmten Frequenz bzw. eines bestimmten Frequenzbereiches erfahren in der Anordnung eine Resonanz. Der Anwender kann Schallwellen in dem Resonanzfrequenzbereich stärker wahrnehmen als Schallwellen in anderen Frequenzbereichen. Der Bereich der durch die Resonanz verursachten Resonanzüberhöhung liegt beispielsweise zwischen 6 und 9 kHz (vgl.
Ist nun das Röhrchen 56, das das zweite Volumen 67 mit dem Volumen 65 verbindet, nicht verschlossen, so wirkt das Volumen 65 zusammen mit dem Röhrchen 56 wie ein akustischer Saugkreis, der bestimmte Frequenzen absaugt und so die Resonanzüberhöhung der Anordnung bestehend aus Schallführungselement 53 und zweitem Volumen 67 zumindest verringert. Dabei schwingt die Luftmasse, die sich innerhalb des Röhrchens 56 befindet, gegen die Elastizität der Luftmasse, die sich in dem Volumen 65 befindet. Das Volumenelement 55 und das Röhrchen 56 bilden zusammen einen Resonator, der auch Helmholtz-Resonator genannt wird.If the
Durch die spezielle Ausbildung des Volumenelementes, das beispielsweise die Volumengröße festlegt, und die spezielle Ausführung des Röhrchens 56, beispielsweise durch Länge, Querschnitt, eingefügtes Dämpfungsmaterial, sind die gewünschten Parameter des Resonators einstellbar. Ein solcher Parameter ist beispielsweise die Frequenz, die der Resonator aus der Anordnung bestehend aus dem Schallführungselement und dem zweiten Volumen 67 absaugen soll. Der Resonator wird also so abgestimmt, dass seine Resonanz der störenden Resonanz, die im Bereich von etwa 6 bis 9 kHz liegt, entspricht. Somit wirkt der Resonator als akustischer Saugkreis, der den Schalldruck im Ohrkanal im Bereich der störenden Resonanzfrequenz reduziert.The desired parameters of the resonator can be set by the special design of the volume element, which defines the volume size, for example, and the special design of the
Das Volumenelement 5 kann ringförmig um das Schallführungselement 3 angeordnet sein. Somit wird eine platzsparende Anordnung von Schallführungselement 3 und Volumenelement 5 erreicht. Die erste Öffnung 4 der Schallführungseinheit bzw. -kanal liegt auf einer Seite 10 des ersten Gehäuseteils. Auf der Seite 10 liegt ebenfalls die zweite Öffnung 6 des Volumenelements 5. Die erste Öffnung 4 und die zweite Öffnung 6 sind auf der Seite 10 des ersten Gehäuseteils nebeneinander angeordnet. Auf diese Weise wird ein luftdichter Abschluss des Ohrkanals, eine Verbindung der ersten Öffnung mit dem Ohrkanal und eine von der ersten Öffnung getrennte zweite Öffnung, die mit dem Ohrkanal verbunden ist, realisiert. Die zweite Öffnung 6 kann in den Ohrkanal münden, sie sollte jedoch nicht in das Schallführungselement 3 münden. Würde die zweite Öffnung 6 in das Schallführungselement 3 münden, so würde die Schallführung ihre Wirkung verlieren und der akustische Saugkreis würde den Frequenzgang des Hörers nachteilig beeinflussen.The
Das erste Gehäuseteil 8 ist auf ein zweites Gehäuseteil 11 aufsteckbar. Über das zweite Gehäuseteil 11 wird einer Anschlussvorrichtung 12 ein elektrisches Signal zugeführt. Dieses elektrische Signal wird von dem akustischen Wandler 2 in ein Schallsignal gewandelt, das sich entlang der Schallführung ausbreitet. Das Volumen 65 des Volumenelementes 5 kann einstellbar ausgebildet sein. Beispielsweise ist in dem Volumenelement 5 ein Schieber angeordnet, der die Größe des Volumens 65 verändern kann. Somit sind die akustischen Eigenschaften des Resonators, der aus dem Volumenelement 5 und der zweiten Öffnung 6 besteht, einstellbar. Das erste Gehäuseteil 8 ist von dem zweiten Gehäuseteil 11 abziehbar und auf das zweite Gehäuseteil 11 aufsteckbar. Auf diese Art ist beispielsweise der akustische Wandler 2 bei einem Defekt austauschbar. Ebenso können verschiedene erste Gehäuseteile auf das zweite Gehäuseteil 11 gesteckt werden. Die verschiedenen Gehäuseteile unterscheiden sich z. B. in der äußeren Abmessung, die sich einem bestimmten Ohrkanal anpassen soll, sowie in den Dimensionen des Volumens 65 und der Öffnung 6, die sich einer anwenderspezifischen Ohrkanalresonanz anpassen sollen. Somit ist ein erstes Gehäuseteil im Hinblick auf einen speziellen Anwender bzw. dessen speziellen Ohrkanal auswählbar bzw. anpassbar.The
Das Volumen des Volumenelements 105 soll sich beim Einsetzen des Ohrkanal-Hörers 101 in einen Ohrkanal nicht verändern, Dies kann z. B. durch Einbringen von Rippen erfolgen oder durch eine Kunststoffhülle, die das Volumen umgibt bzw. bildet.The volume of the
Das Ohrpolster 100 weist eine Befestigungseinrichtung auf, die beispielsweise als ein erster Flansch 120 ausgebildet ist. Mit dem ersten Flansch 120 kann das Ohrpolster an einem ersten Gehäuseteil 108 des Ohrkanal-Hörers 101 befestigt werden. Das erste Gehäuseteil 108 bildet die Schallführungseinheit 103 und weist einen zweiten Flansch 121 auf, der zum Halten des ersten Flansches 120 des Ohrpolsters 100 dient. Beispielsweise ist das Ohrpolster 100 aus einem gummiartigen Material hergestellt, so dass das Ohrpolster über das erste Gehäuseteil 108 gestülpt werden kann und sich der gummiartige Flansch 120 an den zweiten Flansch 121 anlegt. Auf diese Art wird ein Aufstecken und ein Abziehen des Ohrpolsters von dem ersten Gehäuseteil 108 ermöglicht.The
Die erste Öffnung 104 der Schallführungseinheit 103 und die zweite Öffnung 106 der Volumeneinheit 105 des Ohrpolsters 100 liegen auf einer Seite 110 des Ohrkanal-Hörers, die in Richtung des Ohrkanals eines Anwenders weist. Die erste Öffnung 104 und die zweite Öffnung 106 sind getrennt voneinander angeordnet, so dass die Wirkung des Resonators, der aus dem Volumenelement 105 und der zweiten Öffnung 106 besteht, entfaltet werden kann. Das Volumen der Volumeneinheit 105 kann einstellbar ausgebildet sein. Verschiedene Ohrpolster können sich durch ihre Außenabmessungen, ihre zweite Öffnung und ihre Volumeneinheit unterscheiden. Somit kann sich das Ohrpolster den Abmessungen eines individuellen Ohrkanals eines Anwenders anpassen und gleichzeitig kann durch eine geeignete Wahl des Volumens und der zweiten Öffnung 106 ein gewünschter Resonanzeffekt, der an die Geometrie des individuellen Ohrkanals angepasst ist, realisiert werden.The
Das erste Gehäuseteil 108 weist eine Aufnahmeeinheit 109 für einen akustischen Wandler 102 auf. Das erste Gehäuseteil 108 kann aufsteckbar und abziehbar mit einem zweiten Gehäuseteil 111 verbunden sein. Auf diese Art kann der akustische Wandler 102 beispielsweise im Falle eines Defekts leicht ausgewechselt werden. Über das zweite Gehäuseteil 111 wird dem akustischen Wandler 102 über eine Anschlusseinrichtung 112 ein elektrisches Signal zugeführt, dass der akustische Wandler 102 in ein Schallsignal wandelt, das entlang der Schallführungseinheit 103 durch die erste Öffnung 104 zu einem Ohrkanal gelangen kann. Mit der dargestellten Anordnung des Ohrkanal-Hörers 101 bzw. mit dem Ohrpolster 100 kann der in
Somit weist das erste und zweite Volumen zusammen mit den zu ihnen führenden Öffnungen einen eigenständigen Helmholtz-Resonator auf. Hierbei können diese beiden Resonatoren unabhängig voneinander abgestimmt werden. Dies ist vorteilhaft, da eine Absenkung von zwei Frequenzen realisierbar ist. Die Größe des ersten und zweiten Volumens sowie die Anzahl und Größe der damit verbundenen Öffnungen können unabhängig voneinander gewählt werden.Thus, the first and second volumes, together with the openings leading to them, have an independent Helmholtz resonator. These two resonators can be tuned independently of one another. This is advantageous because two frequencies can be reduced. The size of the first and second volumes and the number and size of the openings connected to them can be selected independently of one another.
Alternativ dazu können auch mehr als zwei Volumen vorgesehen werden.Alternatively, more than two volumes can be provided.
Der ringförmig angeordnete Volumenkörper gemäß dem vierten Ausführungsbeispiel kann bei einem Ohrkanal-Hörer gemäß dem ersten, zweiten oder dritten Ausführungsbeispiel verwendet werden.The annularly arranged solid according to the fourth exemplary embodiment can be used in an ear canal earpiece according to the first, second or third exemplary embodiment.
An der Öffnung des Volumenelementes 5 kann optional ein Dämpfungselement vorgesehen werden. Wie auch in dem zweiten Ausführungsbeispiel ist die Öffnung des Volumenelementes 5 an dem dem Ohr zugewandten Ende des Ohrpolsters bzw. des Hörers vorgesehen.A damping element can optionally be provided at the opening of the
Claims (8)
- An ear canal earpiece (1) having
a first side (13) towards an ear,
an acoustic transducer (2, 52) for outputting a sound signal,
a sound guide element (3, 53) having a first end (14) facing the acoustic transducer (3, 53) and a second end (15) facing the first side (13) of the ear canal earpiece (1),
wherein the sound guide element (3) comprises a first opening (4) at its second end (15) for guiding the sound signal from an electroacoustic transducer (2, 52) to an ear canal of a user, and
at least one volume element (5, 55) which delimits a volume (65) and which has at least one second opening (6, 56) as only opening, wherein the second opening (6, 56) connects the volume (65) with the first end (13) of the earpiece when the ear canal earpiece is placed in the ear canal of a user,
wherein the second opening (6, 56) is arranged at the first side (13) of the earpiece,
wherein the volume (65) of the volume element (5, 55) together with the opening (6, 56) of the volume element (5, 55) forms a resonator when the ear canal earpiece is placed into the ear canal of the user,
wherein the first opening (4) and the second opening (6) are arranged next to each other at the first side (13). - Ear canal earpiece (1) according to claim 1, wherein
the second opening (6, 56) of the volume element (5, 55) is embodied as a tube portion (56). - Ear canal earpiece (1) according to claim 1, wherein
the volume element (65) together with the second opening (6, 56) of the volume element (5, 55) form a Helmholtz resonator when the ear canal earpiece is placed into the ear canal of a user. - Ear canal earpiece (1) as set forth in one of the preceding claims, wherein
the volume element (5, 55) is arranged at least partially around or in the sound guide element (3, 53). - Ear canal earpiece (1) as set forth in one of the preceding claims, wherein
the volume (65) of the volume element (5, 55) is adjustable. - Ear canal earpiece (1) as set forth in one of the preceding claims, wherein
a damping element (7) is mounted at the opening (6, 56) of the at least one volume element (5, 55). - Ear canal earpiece (1) as set forth in one of the preceding claims, comprising
a first housing portion (8) which constitutes the volume element (5) and the sound guide element (3) and which has a receiving unit (9) for the acoustic transducer (2). - Ear canal earpiece (1) according to claim 7, comprising
a second housing portion (11) which has a connecting device (12) for the acoustic transducer (2), wherein the first housing portion (8) can be fitted on to and be removed from the second housing portion (11).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102009008376A DE102009008376A1 (en) | 2009-02-11 | 2009-02-11 | receiver |
PCT/EP2010/051726 WO2010092118A1 (en) | 2009-02-11 | 2010-02-11 | Earpiece |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2396972A1 EP2396972A1 (en) | 2011-12-21 |
EP2396972B1 true EP2396972B1 (en) | 2020-03-25 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP10703473.8A Active EP2396972B1 (en) | 2009-02-11 | 2010-02-11 | Earpiece |
Country Status (5)
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US (1) | US8971545B2 (en) |
EP (1) | EP2396972B1 (en) |
CN (1) | CN102318368B (en) |
DE (1) | DE102009008376A1 (en) |
WO (1) | WO2010092118A1 (en) |
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US9571921B2 (en) * | 2011-08-22 | 2017-02-14 | Knowles Electronics, Llc | Receiver acoustic low pass filter |
CN103905943A (en) * | 2012-12-26 | 2014-07-02 | 鸿富锦精密工业(深圳)有限公司 | Earphone |
DE102013205846A1 (en) | 2013-04-03 | 2014-10-09 | Sennheiser Electronic Gmbh & Co. Kg | Ear canal earpiece and earpiece unit for a listener |
US9615158B2 (en) * | 2015-03-08 | 2017-04-04 | Bose Corporation | Earpiece |
DE102017207528A1 (en) * | 2017-05-04 | 2018-11-08 | Sivantos Pte. Ltd. | Module for installation in a hearing aid |
KR102167420B1 (en) * | 2017-06-01 | 2020-10-20 | 주식회사 이엠텍 | Dynamic receiver with resonance protector for ear phone |
US10986432B2 (en) * | 2017-06-30 | 2021-04-20 | Bose Corporation | Customized ear tips |
JP6400157B1 (en) * | 2017-07-25 | 2018-10-03 | Ttr株式会社 | Sealed earphone |
CN108989933A (en) * | 2018-07-16 | 2018-12-11 | 广州艺腾电子产品有限公司 | Headphone structure |
CN111163396B (en) * | 2020-03-12 | 2021-07-30 | 环鸿电子(昆山)有限公司 | Loudspeaker and electronic device thereof |
TWI766331B (en) * | 2020-08-03 | 2022-06-01 | 華龍國際科技股份有限公司 | Earplug with pressure regulating chamber and molding method of the same |
EP4142304A1 (en) * | 2021-08-31 | 2023-03-01 | GN Audio A/S | In-ear audio device with resonator |
WO2024024412A1 (en) * | 2022-07-26 | 2024-02-01 | ソニーグループ株式会社 | Audio processing device, information processing method, and earpiece |
US11943583B1 (en) * | 2023-06-18 | 2024-03-26 | xMEMS Labs, Inc. | Speaker system, spreading structure and headphone |
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2009
- 2009-02-11 DE DE102009008376A patent/DE102009008376A1/en not_active Ceased
-
2010
- 2010-02-11 US US13/148,770 patent/US8971545B2/en active Active
- 2010-02-11 CN CN201080007217.5A patent/CN102318368B/en active Active
- 2010-02-11 EP EP10703473.8A patent/EP2396972B1/en active Active
- 2010-02-11 WO PCT/EP2010/051726 patent/WO2010092118A1/en active Application Filing
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WO2008099137A1 (en) * | 2007-02-16 | 2008-08-21 | Wolfson Microelectronics Plc | Ear- worn speaker-carrying devices |
Also Published As
Publication number | Publication date |
---|---|
WO2010092118A1 (en) | 2010-08-19 |
CN102318368A (en) | 2012-01-11 |
CN102318368B (en) | 2015-02-18 |
US8971545B2 (en) | 2015-03-03 |
EP2396972A1 (en) | 2011-12-21 |
DE102009008376A1 (en) | 2010-08-12 |
US20110311070A1 (en) | 2011-12-22 |
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