Title Reduction of microphone wind noise in headsets Field The present invention relates to a device for reducing microphone wind noise in a headset, to an assembly for reducing microphone wind noise in a headset, and to a method of assembling a kit of element for reducing microphone wind noise into an assembly. Background

Headsets for mobile phone are widely used. The mobile headset enables the user to communicate (or recording audio) while walking, running, or driving a vehicle such as a bike. Wind noise is however a common problem. If the user is riding a bicycle or driving another open vehicle, the wind noise may be significant even when the weather is calm. Normally problems with

microphone wind noise are solved by arranging a foam cover around the microphone. However, the design of most wired headsets makes it difficult to secure standard foam covers to the microphone.

US2010054516 discloses an apparatus for reducing background and wind noise to a microphone contained in a microphone casing comprises a clamshell enclosure. The clamshell enclosure has a top piece and a bottom piece held together by a hinge or a plastic membrane, wherein the clamshell enclosure is designed to encapsulate the microphone casing containing the microphone. The clamshell enclosure contains foam materials inside the clamshell enclosure, or the clamshell enclosure itself is made out of foam materials such as polyurethane, wherein the foam materials contribute to reduction of background and wind noises to the microphone. Consequently, by using a hinge design the apparatus may be secured to a microphone and reduce the amount of wind noise.

The apparatus may however be expensive / complex to manufacture and the mechanical components of the apparatus such as the hinge will be exposed to wear.

Thus, it remains a problem to provide a device for reducing wind noise that is simple to manufacture.

It further remains a problem to provide a device having fewer mechanical components.

Summary

According to a first aspect, the invention relates to a device for reducing microphone wind noise in a headset, the headset comprising a microphone, wherein the device comprises tubular outer element having a through hole having a first opening and a second opening opposite to the first opening wherein the tubular outer element is configured to allow passage of a headphone of the headset through the through hole, whereby the tubular outer element may be moved along an electrical cord connected to the headphone and wherein the device is configured to secure the tubular outer element to the microphone of the headset.

Consequently, a device for reducing microphone wind noise in a headset is provided where the individual elements are simple to manufacture.

The device does furthermore not rely on mechanical parts. In some embodiments, the device is a kit of elements wherein the kit in addition to the tubular outer element further comprises an inner element, the inner element having a longitudinal slot configured to receive the microphone whereby the inner element may be arranged at least partly around the microphone, and wherein the through hole of the tubular outer element is configured to receive at least a part of the inner element and secure the inner element to the microphone.

The kit of elements may be packed with the inner element and tubular outer element separate from each other, allowing the user to assemble the kit as explained in relation to Fig. 4a-d. Alternatively, the kit of element may be packed fully or partly assembled as an assembly.

The through hole of the tubular outer element may be configured to receive the entire inner element. The headset may be a headset for a mobile phone. The headset may be a stereo headset where the microphone is arranged above the bifurcation, i.e. on the electrical cord connecting the bifurcation with one of the two headphones. The headphones may be in-ear

headphones having a widest width above the widest width of the microphone. The microphone typically comprises an acoustic-to-electric transducer and a microphone casing.

In some embodiments, the tubular outer element is made of a foam material for reducing microphone wind noise. The foam material may be a soft open- cell polyester or polyurethane foam.

The inner element may also be made of a foam material or another type of material such as a rubber like material e.g. a silicone material.

In some embodiments, the inner element is made of foam material for reducing microphone wind noise. The foam material may be soft open-cell polyester or polyurethane foam.

By having a tubular outer element that is configured to allow passage of a headphone of the headset through the through hole

the kit may be used together with a stereo headset where the microphone is arranged above the bifurcation.

In some embodiments, the inner element has an elongated body.

In some embodiments, the tubular outer element has an elongated body.

In some embodiments, the elongated body of the inner element has a first end and a second end opposite to the first end, wherein the widest width of the first end is smaller than the widest width of the second end.

In some embodiments, the elongated body of the inner element has a tapering shape. Consequently, it becomes easier to assemble the kit by inserting the inner element into the through hole of the tubular outer element.

In some embodiments, the through hole of the tubular outer element has a tapering shape corresponding to the tapering shape of the elongated body of the inner element, whereby the elongated body of the inner element may be snugly fitted inside the through hole.

This allows the tubular outer element to efficiently be attached to the tubular outer element. In some embodiments, the first opening of the through hole of the tubular outer element has at least one flexible part for closing the first opening.

Consequently, dirt may be prevented from entering the first opening.

The first opening of the through hole of the tubular outer element may have a plurality of flexible parts for closing the first opening such as at least two, three or four flexible parts. In some embodiments, the tubular outer element is configured to deform from a rest shape into a second shape when the headphone of the headset is being passed through the through hole of the tubular outer element and back into the rest shape after the headphone has completely passed, and wherein at least a first part of the through hole of the tubular outer element, when the tubular outer element is in the rest shape, has a flattened shape configured to secure the tubular outer element to the microphone.

Consequently, by using a deformable tubular outer element that has a through hole with a flattened part, the tubular element may deform to allow passage of the headphone while still being capable of gripping the

microphone and secure the tubular outer element thereto.

In some embodiments, wherein the widest width of the first part of the through hole is at least 2 times larger than the height of the first part of the through hole.

The widest width is measure along a first axis being perpendicular to the central axis of the through hole of the tubular outer element. The height is measured along a second axis being perpendicular to both the central axis of the through hole of the tubular outer element and the first axis. In some embodiments, the widest width of the first part of the through hole is at least 3 times larger than the height of the first part of the through hole.

In some embodiments, the widest width of the first part of the through hole is at least 5 times larger than the height of the first part of the through hole.

In some embodiments, the through hole of the tubular outer element is at least partly lined with an adhesive configured to non-permanently adhere to the microphone.

According to a second aspect the invention relates to an assembly for reducing microphone wind noise in a headset, the head set comprising a microphone wherein the assembly comprises a tubular outer element and an inner element, the inner element having a longitudinal slot configured to receive the microphone whereby the inner element may be arrange at least partly around the microphone, the tubular outer element having a through hole having a first opening and a second opening opposite to the first opening, wherein the inner element is arranged inside the through hole of the outer element.

According to a third aspect the invention relates to a method of assembling a kit of elements for reducing microphone wind noise into an assembly and securing the assembly to a microphone of a headset, the kit of elements comprising an inner element having a longitudinal slot and a tubular outer element the tubular outer element having a through hole having a first opening and a second opening opposite to the first opening, the method comprising the steps of:

• inserting the microphone through the elongated slot of the inner

element;

· inserting a headphone of the headset into the second opening of the through hole of the tubular outer element; • moving the tubular outer element along an electrical cord connecting the headphone with the microphone; and

• assembling the assembly by inserting the inner element into the

through hole of the tubular outer element through the second opening of first opening, thereby attaching the inner element to the tubular outer element and securing the assembly to the microphone.

According to a fourth aspect the invention relates to a device for reducing microphone wind noise in a headset, the headset comprising a microphone, wherein the device comprises:

• a first elongated element extending along a central longitudinal axis, said first elongated element being made of a material for reducing microphone wind noise, said first elongated element having a longitudinal slot in the foam material configured to receive the microphone whereby the first elongated element may be arranged at least partly around the microphone

wherein the device is configured to secure the first elongated element to the microphone of the headset. Consequently, a device for reducing microphone wind noise in a headset is provided where the individual elements are simple to manufacture.

The material for reducing microphone wind noise may be a foam material for reducing microphone wind noise. The foam material may be a soft open-cell polyester or polyurethane foam.

In some embodiments, the elongated first element comprises a central cavity extending along the longitudinal axis for keeping the microphone of the headset, wherein the longitudinal slot forms an entrance to the central cavity. Consequently, the microphone may be stored in the elongated first element, without substantially deforming the elongated first element.

The central cavity may have a shape matching the shape of the microphone, thus, if the microphone is elongated the central cavity may be an elongated central cavity.

In some embodiments, the first elongated element is configured for closing the longitudinal slot whereby the first elongated element may be secured to the microphone of the headset.

Consequently, a device for reducing microphone wind noise in a headset is provided having fever components. In some embodiments, the first elongated element is configured for closing the longitudinal slot by having one or more gripping zones arranged on a first wall of the longitudinal slot, wherein the one or more gripping zones is / are configured to adhere to a second wall of the longitudinal slot. The one or more gripping zones may extend along the longitudinal axis.

In some embodiments, the one or more gripping zones is / are one or more adhesive zone fitted with an adhesive. The adhesive may be configured to permanently adhere and thereby permanently close the longitudinal slot. Alternatively, the adhesive may be configured to non-permanently adhere and thereby non-permanently close the longitudinal slot. In some embodiments, a protective strip is arranged on top of the one or more adhesive zones for preventing the one or more adhesive zones from adhering to the second wall of the longitudinal slot before needed. In some embodiments, the first wall and the second wall are non-planar walls; the one or more adhesive zones are arranged so that when the microphone of the headset is positioned in the centre of the first elongated element and the one or more adhesive zones are adhered to the second wall, the microphone is not capable of coming into contact with the one or more adhesive zones by a one-dimensional translation between the microphone and the first elongated element.

Consequently, a more durable device is provided as the microphone is prevented from removing the adhesive. This further prevents the microphone from being damaged and / or getting covered in dirt as a result of contact with the adhesive.

In some embodiments,

• the first wall has a concave portion extending along the central

longitudinal axis and the second wall has a convex portion extending along the central longitudinal axis; the convex portion and the concave portion have a matching shape, wherein the one or more adhesive zones is / are arrange at the bottom of the concave portion or radially outwards from the bottom of the concave portion; or

• the second wall has a concave portion extending along the central longitudinal axis and the first wall has a convex portion extending along the central longitudinal axis; the convex portion and the concave portion have a matching shape, wherein each of the one or more adhesive zones is / are arrange at the top of the convex portion or radially outwards from the top of the convex portion. Consequently, the concave / convex portions prevent the microphone from coming into contact with the adhesive. Thus, a simple and durable device for reducing microphone wind noise is provided that furthermore prevents the microphone from being damaged by the adhesive.

'Radial outward from the bottom / top of the concave / convex portion' means further away from the central longitudinal axis than the bottom / top of the concave / convex portion. The one or more adhesive zone(s) may extend along the central longitudinal axis along least 50%, 75%, or 90% of the length of the first elongated element.

In some embodiments, the concave portion and the convex portions are extending along the central longitudinal axis along at least 50%, 75%, or 90% of the length of the first elongated element.

In some embodiments, the concave portion and the convex portions are extending along the longitudinal axis along the entire length of the first elongated element. Consequently, the first elongated element becomes easier to manufacture as a single cutting device may be used to create the longitudinal slot, the convex portion and the concave portion.

In some embodiments, the convex portion is a protrusion protruding from a planar surface, and the concave portion is a groove formed in a planar surface.

In some embodiments, the groove and the protrusion have a tapering shape with the width of the bottom of the groove being large than the width of the top of the groove and the width of the top of the protrusion being larger than the width of the bottom of the protrusion, whereby the protrusion may mechanically grip the groove.

Consequently, the firs wall may more securely be attached to the second wall of the longitudinal slot.

In some embodiments, the one or more gripping zones comprises hooks and / or loops of a hook and loop fastener system. The use of a hook and loop fastener systems such as the Velcro ® system enables the longitudinal slot to be non-permanently closed.

In some embodiments, the first element is configured for closing the longitudinal slot by having a flexible closing member attached at an outer surface of the first element on a first side of the longitudinal slot wherein said flexible closing member is configured for gripping the outer surface of the first element at a second side of the longitudinal slot.

The flexible closing member may grip the outer surface of the first element on the second side of the longitudinal slot using an adhesive or a hook and loop fastener system. Alternatively, the flexible closing member may engage with an opening in the outer surface on the second side of the longitudinal slot.

In some embodiments, the device is a kit of elements and wherein the kit in addition to the first element comprises a second element, and wherein said second element is configured for surrounding said first element and keep the longitudinal slot closed whereby the first element may be secured to the microphone of the headset. In some embodiments, the second element is an elastic band configured for surrounding said first element and keep the longitudinal slot closed. In some embodiments, the first element is an inner element and the second element is a tubular outer element having a through hole having a first opening and a second opening opposite to the first opening, the tubular outer element is configured to allow passage of a headphone of the headset through the through hole, whereby the tubular outer element may be moved along an electrical cord connected to the headphone, and wherein the through hole of the outer element is configured to receive at least a part of the inner element and secure the inner element to the microphone.

The different aspects of the present invention can be implemented in different ways including as a device, a kit of elements, an assembly and a method of assembling a kit of elements described above and in the following, each yielding one or more of the benefits and advantages described in connection with at least one of the aspects described above, and each having one or more preferred embodiments corresponding to the preferred embodiments described in connection with at least one of the aspects described above and/or disclosed in the dependant claims. Furthermore, it will be appreciated that embodiments described in connection with one of the aspects described herein may equally be applied to the other aspects.

Brief description of the drawings

The above and/or additional objects, features and advantages of the present invention, will be further elucidated by the following illustrative and non- limiting detailed description of embodiments of the present invention, with reference to the appended drawings, wherein:

Fig. 1 shows a kit according to an embodiment of the invention.

Fig. 2 shows a headset. Fig. 3 shows tubular outer element of a kit according to an embodiment of the invention.

Fig. 4a-d show a method of assembling a kit of elements for reducing microphone wind noise into an assembly and securing the assembly to a microphone of a headset, according to an embodiment of the invention.

Fig. 5 shows a headset with an assembly attached according to an

embodiment of the invention.

Fig. 6a shows an inner element according to an embodiment of the invention. Fig. 6b shows an outer element according to an embodiment of the invention. Fig. 7 shows a device according to an embodiment of the invention.

Fig. 8a-d show a device according to an embodiment of the invention.

Fig. 9a-b show a first and a second side view of a device according to an embodiment of the invention.

Fig. 10a-c show a device according to an embodiments of the invention. Fig. 1 1 shows a cross-section of a device according to an embodiment of the invention.

Fig. 12 shows a cross-section of a device according to an embodiment of the invention.

Fig. 13 shows a cross-section of a device according to an embodiment of the invention.

Fig. 14 shows a device according to an embodiment of the invention

Fig. 15 shows a device according to an embodiment of the invention

Fig. 16 shows a device according to an embodiment of the invention

Fig. 17a-c show a device according to an embodiment of the invention Fig. 18a-e show a device according to an embodiment of the invention

Detailed description

In the following description, reference is made to the accompanying figures, which show by way of illustration how the invention may be practiced. Fig. 1 shows a kit 100 of elements 101 102 for reducing microphone wind noise in a headset according to an embodiment of the invention. The kit 100 comprises a tubular outer element 101 and an inner element 102, the inner element having a longitudinal slot 103 configured to receive a microphone of a headset, whereby the inner element 103 may be arrange at least partly around the microphone. The tubular outer element 101 has a through hole 104 having a first opening 105 and a second opening 106 opposite to the first opening 105, the through hole 104 being configured to receive at least a part of the inner element 102 and secure the inner element 102 to a microphone of a headset.

Fig. 2 shows a headset 210 for a mobile phone. The headset 210 is a stereo headset. The microphone 21 1 is arranged above the bifurcation 213, i.e. on the electrical cord 214 connecting the bifurcation 213 with one of the two headphones 212.

Fig. 3 shows a tubular outer element 301 of a kit according to an embodiment of the invention. The tubular outer element 301 has a through hole 304 having a first opening 305 and a second opening 306 opposite to the first opening 305. The first opening 305 have a four flexible parts 350 351 352 353 for closing the first opening 305.

Fig. 4a-d show a method of assembling a kit of elements 401 402 into an assembly 401 402 and securing the assembly 401 402 to a microphone 41 1 of a headset 410, according to an embodiment of the invention. The kit of elements 401 402 comprises a tubular outer element 401 and an inner element 402. The tubular outer element may be similar to any one of the tubular outer elements shown in Figs. 1 , 3 and 6a. Correspondingly, the inner element may be similar to any one of the inner elements shown in Figs. 1 and 6b. The inner element 402 comprises a longitudinal slot. The tubular outer element 401 has a through hole having a first opening and a second opening opposite to the first opening. Firstly, the microphone 41 1 is inserted through the elongated slot of the inner element 402 and the headphone 412 is inserted into the second opening of the through hole of the tubular outer element 401 , as shown in 4a. Next, the tubular outer element is moved along the electrical cord connecting the headphone 412 with the microphone 41 1 , as shown in Figs 4b-c. Finally, the assembly is assembled by inserting the inner element 402 into the through hole of the tubular outer element 401 through the second opening, thereby attaching the inner element 402 to the tubular outer element 401 and securing the assembly 401 402 to the microphone 41 1 .

The entire assembly 401 402 may further reversibly be moved away from the microphone 41 1 when it is not needed as shown in Fig. 5. Fig. 6a shows inner element 602 according to an embodiment of the invention. The inner element 602 has an elongated body. The elongated body has a first end and a second end opposite to the first end, the widest width of the first end being smaller than the widest width of the second end. The elongated body of the inner element 602 has a tapering shape.

Fig. 6b shows a tubular outer element 602 according to an embodiment of the invention. The through hole of the tubular outer element has a tapering shape corresponding to the tapering shape of the elongated body of the inner element 602 (shown in Fig. 6a) whereby the elongated body of the inner element may be snugly fitted inside the through hole.

Fig. 7 shows a device 700 for reducing microphone wind noise in a headset according to an embodiment of the invention. The device 700 comprises a tubular outer element 701 having a through hole 704 (only schematically shown) having a first opening 705 and a second opening 706 opposite to the first opening 705 wherein the tubular outer element 701 is configured to allow passage of a headphone of the headset through the through hole, whereby the tubular outer element 701 may be moved along an electrical cord connected to the headphone and wherein the device 700 is configured to secure the tubular outer element 701 to the microphone of the headset.

The device 700 may be configured to secure the tubular outer element 701 to the microphone of the headset by using an inner element as disclosed in relation to Figs. 1 -6 and / or by designing the through hole 704 of the tubular outer element 701 in a special manner as disclosed in relation to Figs 8-9.

Fig.8a-d show a device 800 for reducing microphone wind noise in a headset according to an embodiment of the invention. Fig. 8a shows a perspective view, Fig 8b shows a cross-section, Fig. 8c shows a side view (from the side illustrated by the arrow 821 in fig. 8b), and Fig. 8d shows a side view (from the side illustrated by the arrow 820 in fig. 8b). The device 800 comprises a tubular outer element 801 having a through hole 804 having a first opening 805 and a second opening 806 opposite to the first opening 805 wherein the tubular outer element 801 is configured to allow passage of a headphone of the headset through the through hole 804, whereby the tubular outer element 801 may be moved along an electrical cord connected to the headphone. The width of the through hole is indicated by dotted lines in Fig. 8c-d. The tubular outer element 801 is configured to deform from a rest shape (shown in Figs. 8a-d) into a second shape (not shown) when the headphone of the headset is being passed through the through hole of the tubular outer element 804 and back into the rest shape after the headphone has

completely passed, i.e. the tubular outer element may be made of an acoustic foam allowing the tubular outer element to deform and allow passage of headphone. A part of the through hole of the tubular outer element, when the tubular outer element 801 is in the rest shape, has a flattened shape configured to secure the tubular outer element to the microphone. In this embodiment the first part of the through hole is the entire through hole.

In this embodiment the widest width 830 of the through hole 804 is more than 2 times larger than the height of the through hole 831 . The widest width is measured along a first axis being perpendicular to the central axis 832 of the through hole of the tubular outer element. The height is measured along a second axis being perpendicular to both the central axis of the through hole of the tubular outer element and the first axis.

In this embodiment, the widest width 830 of the through hole 804 is approximately 10 times larger than the height of the through hole 831 .

However, in other embodiment the widest width 830 of the through hole may be approximately 2, 3, or 5 times larger than the height of the through hole 831 .

Fig.9a-b show a device 900 for reducing microphone wind noise in a headset according to an embodiment of the invention. Fig. 9a shows a side view corresponding to Fig. 8c and Fig. 9b shows a side view corresponding to Fig. 8d. The device 900 is similar to the device 800 shown in Figs. 8a-d with the difference that the first part 904b of the through hole only constitutes the central part of the through hole i.e. the through hole further comprises a non flattened second part 904a. Fig. 10a-c show a device 1000 for reducing microphone wind noise in a headset, according to an embodiment of the invention. Fig. 10a shows a perspective view, Fig. 10b shows a top view and Fig. 10c shows a front view. The device 1000 comprises a first elongated element 1002 extending along a central longitudinal axis 1032. The first elongated element 1002 is made of a material for reducing microphone wind noise, such as foam material for reducing microphone wind noise, e.g. be a soft open-cell polyester or polyurethane foam. The first elongated element 1002 has a longitudinal slot 1003 in the foam material configured to receive a microphone of the headset whereby the first elongated element 1002 may be arranged at least partly around the microphone, preferably the first elongated element 1002 is arranged completely around the microphone. The device 1000 is configured to secure the first elongated element 1002 to the microphone of the headset.

Fig. 1 1 shows a cross-section of a device 1 100 according to an embodiment of the invention. The device is similar to the device shown in Fig. 10, and the cross-section is taken in the direction A along the line 1050 shown in Fig. 10b, i.e. in a plane being parallel with the central longitudinal axis 1032. In this embodiment, the first elongated element 1 102 is configured for closing the longitudinal slot 1 103 by having a gripping zone 1 107 arranged on a first wall 1 109 of the longitudinal slot, wherein the gripping zone 1 107 is configured to adhere to a second wall of the longitudinal slot. The gripping zone 1 107 extends along the longitudinal central axis 1 132 along the entire length of the first elongated element 1 102.

The gripping zone 1 107 may be an adhesive zone fitted with an adhesive. This allows the second wall 1313 to be formed without any gripping zones, as shown in Fig. 13. Alternatively, the gripping zone may comprise hooks and / or loops of a hook and loop fastener system, wherein the second wall 1313 preferably also comprises hooks and / or loops. Fig. 12 shows an

embodiment where the first wall 1209 comprises three gripping zones 1207a-c.

Fig. 14 shows a front view of a device 1400 for reducing microphone wind noise in a headset, according to an embodiment of the invention. The device 1400 comprises a first elongated element 1402 made of a foam material for reducing microphone wind noise, the first elongated element 1402 has a longitudinal slot 1403 in the foam material. The longitudinal slot 1403 is configured to receive the microphone, whereby the first elongated element 1402 may be arranged at least partly around the microphone. In this embodiment the first elongated element 1402 is configured for closing the longitudinal slot 1403 by having a flexible closing member 1414 attached at an outer surface of the first elongated element 1402 on a first side of the longitudinal slot 1408a wherein said flexible closing member 1414 is configured for gripping the outer surface of the first elongated element at a second side of the longitudinal slot 1408b. In this embodiment, the flexible closing member grips the outer surface of the first elongated element 1402 on the second side of the longitudinal slot 1408b using an adhesive or a hook and loop fastener system. Fig. 15 shows an alternative, where the flexible closing member 1514 engages with an opening 1515 in the outer surface of the first elongated element on the second side of the longitudinal slot 1508b. Fig. 16 shows a front view of a kit of elements 1600 for reducing microphone wind noise in a headset. The kit comprises a first elongated element 1602 and a second element 1616. The first elongated element 1602 is made of a foam material for reducing microphone wind noise. The first elongated element has a longitudinal slot 1603 in the foam material configured to receive the microphone whereby the first elongated element 1602 may be arranged at least partly around the microphone. The second element 1616 is configured for surrounding the first elongated element 1602 and keep the longitudinal slot 1603 closed whereby the first elongated element 1602 may be secured to the microphone of the headset. In this embodiment, the second element is an elastic band 1616.

Fig. 17a-c show a device for reducing microphone wind noise in a headset according to an embodiment of the invention. Fig. 17a shows a perspective view, Fig. 17b shows a top view, and Fig. 17c shows a central cross-section of the device in a plane being perpendicular to the central longitudinal axis 1732. The device comprises a first elongated element 1702 extending along a central longitudinal axis 1732. The first elongated element 1702 is made of a material for reducing microphone wind noise. The first elongated element 1702 has a longitudinal slot 1703 in the foam material configured to receive the microphone whereby the first elongated element 1702 may be arranged fully around the microphone. The elongated first element 1702 comprises a central cavity 1719 extending along the central longitudinal axis 1732 for keeping the microphone of the headset, wherein the longitudinal slot 1703 forms an entrance to the central cavity 1719. In this embodiment, the central cavity 1719 is a through hole in the first element 1702. The first elongated element 1702 is configured for closing the longitudinal slot 1703 by having an adhesive zone 1720 (shown schematically in Fig. 17b) arranged on a first wall 1713 of the longitudinal slot 1703, wherein the adhesive zone is configured to adhere to a second wall 1909 of the longitudinal slot 1720. In this embodiment, the first wall has a concave portion 1717 extending along the central longitudinal axis 1732 and the second wall has a convex portion 1718 extending along the central longitudinal axis 1732; the convex portion 1717 and the concave portion 1718 having a matching shape. In this embodiment, the adhesive zone 1720 is arranged at the bottom of the concave portion 1720, however in other embodiments, the adhesive zone 1720 may be arranged radially outwards from the bottom of the concave portion, i.e. anywhere along the portion of the first wall 1713 marked by the dotted line 1721 in Fig. 17c. Consequently, the concave / convex portions 1717 1718 prevent the microphone from coming into contact with the adhesive. Thus, a simple and durable device for reducing microphone wind noise is provided that furthermore prevents the microphone from being damaged by the adhesive. In this embodiment, the concave portion and the convex portion 1717 1718 are extending along the longitudinal axis 1732 along the entire length of the first elongated element 1702. Consequently, the first elongated element 1702 becomes easier to manufacture as a single cutting device may be used to create the longitudinal slot 1703, the convex portion 1718 and the concave portion 1717. In this embodiment, the convex portion 1718 is a protrusion protruding from a planar surface of the second wall 1709 and the concave portion 1717 is groove formed in a planar surface of the first wall 1713.

Fig. 18a-e show cross-sections of different devices for reducing microphone wind noise in a headset, according to embodiments of the invention. The cross-sections illustrate different types of concave / convex portions. The arrows 1833 illustrates the bottom / top of the concave / convex portions. The concave portions in Fig. 18a and 18c are protrusions protruding from a planar surface of a wall of the first elongated slit 1803, and the concave portion is a groove formed in a planar surface of the other wall of the elongated slit 1803. The groove and the protrusions have a tapering shape with the width of the bottom of the groove being large than the width of the top of the groove and the width of the top of the protruding portion being larger than the width of the bottom of the protruding portion, whereby the protrusion may mechanically grip the groove.

For all the devices shown in Fig. 17a-b and 18a-e the first wall and the second wall are non-planar walls; the one or more adhesive zones are arranged so that when the microphone of the headset is positioned in the centre of the first elongated element and the one or more adhesive zones are adhered to the second wall, the microphone is not capable of coming into contact with the one or more adhesive zones by a one-dimensional translation between the microphone and the first elongated element.

Although some embodiments have been described and shown in detail, the invention is not restricted to them, but may also be embodied in other ways within the scope of the subject matter defined in the following claims. In particular, it is to be understood that other embodiments may be utilised and structural and functional modifications may be made without departing from the scope of the present invention.

In device claims enumerating several means, several of these means can be embodied by one and the same item of hardware. The mere fact that certain measures are recited in mutually different dependent claims or described in different embodiments does not indicate that a combination of these measures cannot be used to advantage. It should be emphasized that the term "comprises/comprising" when used in this specification is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.