Open audio device

Abstract

An open audio device has a body with an inner surface configured to be positioned behind an outer ear of a user and to contact at least one of the outer ear and a head at multiple locations along a length of the body proximate an intersection of the head and the outer ear. The inner surface of the body generally follows a decay spiral. An acoustic module is carried by the body and configured to be positioned against the outer ear over an ear canal opening.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to provisional patent application 62 / 952,873, filed on December 23, 2019, the entire disclosure of which is incorporated herein by reference for all purposes. Background Technology

[0003] This disclosure relates to an audio device configured for wearing on the ear.

[0004] Wireless headphones transmit sound to the ears. Most wireless headphones include earbuds that fit into the ear canal. These earbuds can suppress or block the user from hearing speech and ambient sounds. Additionally, the earbuds emit social cues that the user cannot use to interact with others. Summary of the Invention

[0005] All examples and features mentioned below can be combined in any technically possible way.

[0006] In one aspect, an open-back audio device includes a body having an inner surface configured to be located behind a user's outer ear and to contact at multiple locations along the length of the body near the junction of the outer ear and at least one of the head, wherein the inner surface of the body is substantially along a decay spiral. An acoustic module is carried by the body and configured to be positioned against the outer ear above the ear canal opening.

[0007] Some examples may include one or any combination of the features described above and / or below. In some examples, the body is configured to contact at least one of the outer ear and the head along a large portion of its length near the junction of the head and the outer ear. In one example, the body has a free distal end configured to be positioned near the lower end of the helix of the ear, and the body is configured to contact at least one of the outer ear and the head near the junction of the head and the outer ear—both near the upper end of the helix and near the free distal end of the body. In one example, the open-back audio device is configured to contact the ear and the head at contact locations including the acoustic module contacting the ear above the ear canal, and the body contacting at least one of the outer ear and the head near the junction of the head and the outer ear (both near the upper end of the helix and near the free distal end of the body). In one example, these contact locations generally define the vertices of a triangle such that the contact helps stabilize the open-back audio device on the ear and the head. In some examples, the acoustic module includes an inner surface configured to contact the outer ear above the ear canal opening and a portion of the head just in front of it.

[0008] Some examples may include one or any combination of the features described above and / or below. In some examples, the body hangs from the acoustic module and includes a bridging member connected to the acoustic module and a housing further away from the acoustic module than the bridging member. In one example, the acoustic module includes an inner surface configured to contact the outer ear above the ear canal opening. A first plane may be defined, which is at least partially coplanar with the inner surface of the acoustic module. A second plane may be defined, which bisects the bridging member. In one example, the two planes intersect at an acute angle. In one example, the acute angle is approximately 30 degrees. In one example, the line representing the contact rotation axis of the bridging member is angled at an obtuse angle to the first plane relative to the normal vector of the first plane in two of the three axes. In one example, these obtuse angles are approximately 165 and 115 degrees, with tolerances of approximately +10 and -0 degrees.

[0009] Some examples may include one or any combination of the features described above and / or below. In one example, the bridging member is thinner than the housing. In some examples, the housing has an inner curved surface and an outer curved surface. In one example, the inner curved surface and the outer curved surface of the housing have approximately the same radius of curvature. In one example, the inner surface of the bridging member has a smaller radius of curvature than the inner surface of the housing. In one example, the housing has a generally teardrop-shaped cross-section. In one example, the thickness of the housing is from about 6 mm to about 12 mm.

[0010] Some examples may include one or any combination of the features described above and / or below. In some examples, the acoustic module includes an audio driver that emits sound from both the front and rear sides, and the acoustic module has an acoustic emission nozzle for emitting front-side sound and a low-frequency dipole opening for emitting rear-side sound. In one example, the nozzle is configured to be closer to the ear canal opening than the low-frequency dipole opening. In one example, the acoustic module further includes a first microphone opening and a second microphone opening, the first microphone opening and the second microphone opening being configured to conduct sound pressure to the first microphone and the second microphone opening, and the microphone opening being located generally within approximately + / - 30 degrees relative to an axis intersecting the intended position of the user's mouth. In one example, the body is a one-piece molded plastic component. In one example, the acoustic module is configured to rest against the outer ear canal and a portion of the head adjacent to and in front of the ear canal. Attached Figure Description

[0011] The following discussion of at least one example, with reference to the accompanying drawings, is not intended to be drawn to scale. The drawings are included to provide illustration and further understanding of the various aspects and examples, and are incorporated in and form part of this specification, but are not intended to be a definition of limitation of the invention. In the drawings, the same or nearly identical parts shown in the various figures may be represented by similar reference numerals or numbers. For clarity, not every part is labeled in every figure. In the drawings:

[0012] Figures 1A to 1G These are perspective views, front views, rear views, left views, right views, top views, and bottom views of an open-back audio device designed for the right ear.

[0013] Figure 2A This is a magnified side view of a representative right ear. Figure 2B yes Figure 2A A rear perspective view of the ear, and Figure 2C yes Figure 2A and Figure 2B Rear view of the ears and adjacent areas of the head.

[0014] Figure 3A It's worn on the right ear. Figures 1A to 1G A side view of an open-back audio device.

[0015] Figure 3B yes Figures 1A to 1G A mirrored rear view of an open-back audio device configured to be worn on the left ear.

[0016] Figure 4A and Figure 4B Two angles are shown between different parts of an open-back audio device.

[0017] Figure 4C The curvature radius of the bridging components and housing of the open-back audio device is shown.

[0018] Figure 4D It is a graph of the radius of curvature (in mm) along the length of the body of the open-back audio device. Detailed Implementation

[0019] This document discloses an open-back audio device, such as wireless headphones, that delivers sound close to the ear canal opening without obstructing or blocking the ear canal. The open-back audio device is mounted on the ear and the portion of the head adjacent to the ear. The open-back audio device is configured to be positioned so that it fits gently and comfortably on the upper ear and the acoustic module is positioned above the ear canal against the ear, keeping the ear canal open to receive speech and ambient sounds. The open-back audio device intersects with the ear so that it remains in place even if the user moves their head.

[0020] Figures 1A to 1G An exemplary open-back audio device 10 is depicted. The open-back audio device 10 is specifically designed to be mounted on the right ear. An open-back audio device for the left ear is a mirror image; see, for example, [link to image]. Figure 3B The right ear and adjacent head area are in Figures 2A to 2C The diagram shows that they help to understand how open-back audio devices interact with the ears and head.

[0021] The open-back audio device 10 is carried by the outer ear 82 and portions 112 and 114 of the head 110, respectively located behind and just in front of the ear (i.e., adjacent to the ear), as further described elsewhere herein. The open-back audio device 10 includes an acoustic module 20 that contains an electroacoustic transducer or audio driver (not shown). The acoustic module 20 is configured to position an acoustic emission opening 22 above an ear canal opening 86, which is behind (i.e., generally below) the tragus 84. The acoustic module 20 has an inner surface 26 and an opposing outer surface 28. In some examples, the inner surfaces 26 and / or 28 are generally flat, such as... Figures 1A to 1G As shown. Advantageously, positioning the acoustic module 20 above the ear canal opening 86 leaves the ear canal opening unobstructed, which visually indicates to others around the user, when viewed from both the side and the front, that the user is open and able to interact with their environment. In one example, the exemplary acoustic module 20 has a second acoustic emission opening 24 that is further away from the ear canal than the opening 22. Openings 22 and 24 can emit sound from opposite sides of the audio driver (e.g., front and back), thus the sound is out of phase. Out-of-phase sounds will tend to cancel each other out in the far field, so the openings operate like low-frequency dipoles. However, opening 22 is close enough to the ear canal that much of its sound is not canceled out before reaching the ear. In one example, the acoustic module 20 carries at least two microphones. Figure 1A Openings 33 and 34 leading to microphones (not shown, located within acoustic module 20) are shown. In one example, the axes of the two microphone openings will be within approximately + / - 30 degrees of the intended location of the user's mouth, allowing the microphones to be arrayed / beamformed, as is known in the art.

[0022] The audio device 10 also includes a body 40 configured to be worn on or adjacent to the outer ear 82, such that the body 40 contacts the outer ear and / or the portion of the head just behind and adjacent to the outer ear at two or more separate, spaced-apart contact locations. The audio device 10 is configured to gently hold the outer ear, the portion of the head just in front of the ear, and the portion of the head just behind the outer ear 82, as explained in more detail below.

[0023] Figures 2A to 2C The diagram illustrates aspects of the ear 80 (particularly the outer ear 82 (sometimes referred to as the auricle)) and adjacent portions of the head that are useful in understanding the open-back audio device of this disclosure and its interaction with the ear and head. The outer ear 82 includes a helix 88 (having its upper end 89, where it intersects the head), an antihelix 90, a concha 92, a concha 94, a crus of the helix 95, a tragus 84, an opening of the ear canal 86, and an earlobe 85. Line 102 indicates the junction of the outer ear 82 and the head 110. The junction 102 has an upper end referred to as the supraauricular attachment point 96 and a lower end referred to as the subauricular attachment point 100, while the rearmost portion of the junction 102 is referred to as the postauricular attachment point 98. The junction 102 generally exhibits an arch 106 between a region 107 near the supraauricular attachment point 96 and a region 108 where the junction begins its descent toward the postauricular attachment point 98. The outer ear includes a rear portion 82b adjacent to the junction 102. The head 110 includes a portion 112 that is located just behind the ear and adjacent to the posterior portion 82b of the ear. The head also includes a portion 114 that is located just in front of the upper portion 104 of the lateral portion 82a of the outer ear 82. Additionally, the head typically includes a depression or recess 116 adjacent to the subauricular attachment point and the earlobe. Figure 2CThe pit 116 is usually, but not necessarily, located very close to or adjacent to the subauricular attachment point 100 or just behind it in most heads, such as... Figure 2C As shown.

[0024] Back Figures 1A to 1G The open-back audio device body 40 includes a curved bridging element 46 and a housing 48 having a free distal end 50. The bridging element 46 is smoothly integrated into the acoustic module 20, for example, as... Figure 1B As shown, the outer surface 44 of the bridging member 46 is tangent to the front curved portion 21 of the acoustic module 20. The bridging member 46 is thinner than the housing 48. One reason for this is to allow space for eyeglass temples to remain seated on the ear when the user is wearing an open-back audio device. Figure 3B As shown. In one example, the body 40 is a one-piece molded plastic component. In another example, the body 40 is made of a non-plastic rigid material, such as metal. The body 40 is relatively rigid in one example, but may have some compliance in the bridging member 46, as described below.

[0025] The main body 40 is typically configured to be positioned behind the outer ear, such as Figure 3A and Figure 3B As shown. The size and shape of the gap 52 between the main body 40 and the acoustic module 20 are generally set to allow the upper portion 104 of the outer ear 82 to be disposed through the opening, wherein the upper end or closed end 53 of the gap 52 is positioned such that the upper end of the helix 88 is disposed within the portion of the gap 52. Thus, the upper end of the helix 88 becomes the point at which the open-back audio device 10 can pivot or rotate.

[0026] The entire body of the 40 is positioned behind the ears, along the back of the ears where it meets the head. See also Figure 3B It shows the main body 40 behind the left ear. Note that... Figure 3B The open-back audio device shown is designed for the left ear 81, therefore it is Figures 1A to 1GThe image shows a mirror image of the open-back audio device 10. The body 40 is sized, shaped, and contoured and angled relative to the acoustic module 20 such that the body 40 generally follows the shape and contour of the ear-head junction and contacts the ear and / or head along most of its length, along most of its path to the free distal end 50, or almost to the free distal end 50. Simultaneously, for most ears, the body 40 is thick enough to slightly push the posterior portion 82b of the outer ear out or away from the head. This curvature of the ear results in a slight force on the body 40, tending to push it against the head. In one example, the acoustic module 20 has an inner surface 26 configured to rest against the front portion 82a of the outer ear 82 (e.g., against one or more of the concha 92, antihelix 90, helix feet 95, and helix 88) and the portion 114 of the head immediately in front of the upper portion 104. The portion of the acoustic module 20 near the highest point 49 of the inner curved surface 42 of the body 40 can be positioned under the helix 88.

[0027] The upper portion 104 of the head and ears, located at or very close to the head, is harder than the rear portion 82b of the outer ear. Since the acoustic module 20 rests at least partially against a hard surface (the portion of the head and ears that rests against or is very close to the head), it cannot move further away from the head. This forces the body 40 out into the outer ear 82, generating a counterforce that tends to rotate the open-back audio device 10 about its highest point 49. This results in three restraint device anchoring positions: the device contacting the helix around the highest point 49, the acoustic module 20 resting against the ear and head, and the body 40 being pushed towards the head due to the slightly curved, soft portion of the ear. The flexibility of the outer ear loads / preloads these three points to ensure they are always subjected to normal forces. Therefore, the flexibility of the outer ear contributes to a stable and comfortable placement of the open-back audio device 10. Furthermore, since these three anchoring positions are not straight, they generally define the vertices of a triangle, resulting in greater stability compared to a case where the anchoring positions are aligned. The open-back audio device 10 is thus held gently but firmly on the head, even when the head moves.

[0028] Figure 4A A spatial relationship between the bridge 46 of the open audio device 10 and the acoustic module 20 is shown. (See diagram) Figure 4AViewed from above, the first generally vertical plane appears as line "A". This plane is partially or entirely coplanar with the flat or substantially flat inner surface 26 of the acoustic module 20. With this first plane bisecting the width of the bridging member 46, a second generally vertical plane, bisecting the bridging member along its longitudinal length across its width, is placed and appears as line "B" from above. The planes represented by lines A and B intersect at an acute angle, approximately 30 degrees in one example. Angles the bridging member 46 at approximately 30 degrees (possibly within + / - 10 degrees of 30 degrees) to help it follow the upper portion of the ear / head junction while ensuring that the inner surface 26 of the acoustic module rests against the ear and head. It also positions the housing 48 behind the ear or very close to the ear / head junction along most of the length of the housing. Thus, the open-back audio device 10 is held to the ear and head in multiple spaced-apart locations. Furthermore, in some examples, the thickness of the shell 48 (which can range from approximately 6 mm to approximately 12 mm) is sufficient to push the outer ear slightly away from the head, as described above. In one example, the shell has a generally teardrop-shaped cross-section that gradually widens as it moves from the top of the shell toward the free distal end 50 to the bottom of the shell. The teardrop shape has a wide end and a narrow end. In one example, the shell is configured such that the wide end of its teardrop-shaped cross-section is positioned against the ear, causing the ear to bend slightly outward, while the narrow end does not contact the head or ear to improve comfort.

[0029] Figure 4B Another spatial relationship between bridging element 46 and acoustic module 20 is shown. Plane A is Figure 4A The same plane A is shown. Line C represents the contact rotation axis of the bridging element 46. In one example, line C is angled relative to the normal vector of plane A at (165, 0, 115) degrees (with a tolerance of approximately +10, -0 degrees). This angle allows the acoustic module 20 to closely match the orientation of the ear canal in this region without pinching or squeezing the canal.

[0030] Figure 4C and Figure 4DThe radius of curvature of an exemplary body 40 is illustrated and described. The inner curved surface 42 of the body 40 generally follows a decaying spiral. A spiral is a smooth curve in three-dimensional space. The inner curved surface 42 is not strictly spiral, but it does curve in three-dimensional space because the free distal end 50 (which is at the distal end of the housing 48) deviates from the highest point 49 of the inner curved surface 42, making the free distal end 50 closer to the median sagittal plane compared to the highest point 49. The curve decays because its radius of curvature increases as it moves from the beginning of the curve at the highest point 49 to its end near the free distal end 50 (correspondingly, its curvature is greatest at the beginning of the curve at the highest point 49 and decreases as the body is moved downward toward its free distal end 50). In one example, the approximate dimensions of the radius of curvature at several points along the inner curved surface 42 are as follows: highest point 49, 3.5 mm; point 42a, 5 mm; point 42b, 7 mm; point 42c, 9 mm.

[0031] Figure 4D This is a graph of the radius of curvature along the length of the inner curved surface 42 (which is approximately 70 mm in one non-limiting example). The abrupt jump and drop, starting between 80-90% of the length and ending at 100%, is due to the rounded free distal end 50. The inner curved surface 42 is configured to generally follow the ear-head junction behind a “normal” human ear, and the length of the shell ensures that in almost every ear anatomy, the body will be located on or near this junction, reaching at least downwards to the point of attachment behind the ear, and in many cases below it, near the lower end of the helix. The thickness of the shell 48 is designed to push the outer ear slightly away from the head, at least in most anatomy, as described above. In one example, the shell has a generally uniform width. Therefore, the inner curved surface 42 and the outer curved surface 44 of the shell will have approximately the same radius of curvature. The size and shape of the shell are set to accommodate conventional cylindrical rechargeable batteries, although other battery shapes can be accommodated.

[0032] The body 40 may be generally shaped to follow the junction of the outer ear and the head. Contact along this junction and / or between the head and / or ear will occur at multiple spaced-apart locations along the ear and adjacent head regions. However, due to the many shapes and sizes of the human head, the body 40 may not necessarily contact the junction of the head and ear. Instead, it may be designed to have a shape that allows it to contact, at least on most of the head, the back of the outer ear and / or the portion of the head adjacent to the back of the outer ear, and the front portion of the ear above the ear canal opening. These contacts occur at multiple spaced-apart locations. These locations may include at least positions substantially or generally diametrically opposed.

[0033] In one example, the bridging element may be constructed to have a degree of bending compliance (e.g., by manufacturing the bridging element as a flexible material, or by overmolding a flexible material, such as an elastomer, in a portion designed to bend). The bending compliance may be about its longitudinal axis. The bridging element may be configured such that it bends slightly when pushed down over the top of the ear. This compliance can generate a gentle force pushing the acoustic module and housing against the head to better hold the open-back audio device in place. The compliance can also induce a slight compressive force at the relative position of the open-back audio device, and thus result in a clamping action on the ear and head sufficient to help hold the open-back audio device in place as the head moves.

[0034] Furthermore, because at least two of the contact points between an open-back audio device and the ear / head are near the upper portion of the ear (due to the acoustic module and bridging) and decrease downwards on the back of the ear / head (typically at or below the postauricular attachment point 98 due to the shape and curvature of the housing), there are generally diameter-opposite contact points. This generally diameter-opposite positioning generates a resultant force on the open-back audio device along a line roughly between the opposing contact areas. In this way, the open-back audio device can be considered stable on the ear. This contrasts with the case where the lower contact area is substantially further upwards on the back of the ear, resulting in a resultant force on the open-back audio device that tends to push it upwards and rotate it forward, upwards, and away from the ear. By arranging the contact forces generally diameter-opposite on the ear, the open-back audio device can accommodate a wider range of orientation and inertial conditions, where forces can be balanced, and the open-back audio device can thus be held on the ear.

[0035] The open-back audio device 10 can be a primarily one-piece molded plastic component. The plastic material may possess a degree of flexibility, making the open-back audio device less likely to break when it is seated, etc. The material can be nylon or cellulose acetate (similar to the material used in some eyeglass frames that can bend to a certain degree without breaking and then return to their original shape after bending). Since the acoustic module 20 houses the audio driver and the electronics used to receive, process, and supply audio signals to the driver, the design must consider the need to position the components within the acoustic module 20. Furthermore, a rechargeable battery is typically contained within the housing 48, and wiring needs to travel from the battery to the acoustic module.

[0036] Having described several aspects of at least one example above, it should be understood that various changes, modifications, and improvements will readily occur to those skilled in the art. Such changes, modifications, and improvements are intended to be part of this disclosure and are intended to fall within the scope of this invention. Therefore, the foregoing description and drawings are merely exemplary, and the scope of the invention should be determined by the proper construction of the appended claims and their equivalents.

Claims

1. An open-source audio device, the open-source audio device comprising: A body having an inner surface configured to be located behind a user’s outer ear and to contact at multiple locations along the length of the body near the junction of the outer ear and the head, wherein the inner surface of the body is along a decay spiral. and An acoustic module containing an electroacoustic transducer, the acoustic module being carried by the body and having an inner surface configured to be positioned above the ear canal opening against the front portion of the outer ear so that the ear canal opening is unobstructed when viewed from both the side and the front. The acoustic module is configured to position a first acoustic emission opening above the ear canal opening and also has a second acoustic emission opening further away from the ear canal than the first acoustic emission opening. The first and second acoustic emission openings are arranged to emit sound from opposite sides of the electroacoustic transducer, such that the emitted sounds are out of phase so as to cancel each other out in the far field.

2. The open-back audio device of claim 1, wherein the body is configured to contact at least one of the outer ear and the head near the junction of the head and the outer ear along a large portion of the length of the body.

3. The open-back audio device of claim 1, wherein the body has a free distal end configured to be positioned near the lower end of the helix of the ear, wherein the body is configured to contact at least one of the outer ear and the head near the junction of the head and the outer ear, near the upper end of the helix, and near the free distal end of the body.

4. The open-back audio device of claim 3, wherein the open-back audio device is configured to contact the ear and the head at contact locations defined by the following conditions: the acoustic module contacts the ear above the ear canal; and the body contacts at least one of the outer ear and the head at both the junction near the head and the outer ear, near the upper end near the helix, and near the free distal end near the body. These contact points define the vertices of the triangle, such that the contact helps stabilize the open-back audio device on the ear and the head.

5. The open-back audio device of claim 1, wherein the inner surface is configured to contact both the outer ear above the ear canal opening and a portion of the head just in front of it.

6. The open-back audio device of claim 1, wherein the body hangs from the acoustic module and includes a bridging element connected to the acoustic module and a housing further away from the acoustic module than the bridging element.

7. The open-back audio device of claim 6, wherein the inner surface is configured to contact the outer ear above the ear canal opening, and wherein a first plane that is at least partially coplanar with the inner surface of the acoustic module and a second plane that bisects the bridging member intersect at an acute angle.

8. The open-back audio device of claim 7, wherein the acute angle is 30 degrees.

9. The open-back audio device of claim 6, wherein the inner surface is configured to contact the outer ear above the ear canal opening, and wherein the normal vector of the line representing the contact rotation axis of the bridging member relative to the first plane is at an obtuse angle to the first plane in two of the three axes, the first plane being at least partially coplanar with the inner surface of the acoustic module.

10. The open-back audio device of claim 9, wherein the obtuse angles are 165 and 115 degrees, with a tolerance of +10 to -0 degrees.

11. The open-back audio device of claim 6, wherein the bridging element is thinner than the housing.

12. The open-back audio device of claim 6, wherein the housing has an inner curved surface and an outer curved surface.

13. The open-back audio device of claim 12, wherein the inner curved surface and the outer curved surface of the housing have the same radius of curvature.

14. The open-back audio device of claim 6, wherein the inner surface of the bridge has a smaller radius of curvature than the inner surface of the housing.

15. The open-back audio device of claim 6, wherein the housing has a teardrop-shaped cross-sectional shape.

16. The open-back audio device of claim 6, wherein the thickness of the housing is from 6 mm to 12 mm.

17. The open-back audio device of claim 1, wherein the acoustic module includes an audio driver that emits sound from both a front side and a rear side, and wherein the acoustic module has an acoustic emission nozzle for emitting front-side sound and a low-frequency dipole opening for emitting rear-side sound.

18. The open-back audio device of claim 17, wherein the nozzle is configured to be closer to the ear canal opening than the low-frequency dipole opening.

19. The open-back audio device of claim 17, wherein the acoustic module further comprises a first microphone opening and a second microphone opening, the first microphone opening and the second microphone opening being configured to conduct sound pressure to the first microphone and the second microphone, and wherein the microphone opening is located within -30 degrees to 30 degrees relative to an axis intersecting with the intended position of the user's mouth.

20. The open-back audio device of claim 1, wherein the body is a one-piece molded plastic component.

21. The open-back audio device of claim 1, wherein the acoustic module is configured to rest against the outer ear canal and a portion of the head adjacent to and in front of the ear canal.

22. An open-source audio device, the open-source audio device comprising: A body having an inner surface configured to contact at multiple locations along the length of the body behind a user's outer ear and near the junction of the head and the outer ear, at least one of the outer ear and the head, wherein the inner surface of the body is along a decay spiral, wherein the body is configured to contact at least one of the outer ear and the head near both an upper end near the helix and a free distal end near the junction of the head and the outer ear, and wherein the body has a free distal end configured to be positioned near the lower end of the helix of the ear; and An acoustic module containing an electroacoustic transducer, the acoustic module being carried by the body and having an inner surface configured to position against the front portion of the outer ear above the ear canal opening so that the ear canal opening is unobstructed when viewed from both the side and the front, wherein the inner surface is configured to contact both the outer ear above the ear canal opening and a portion of the head just in front of it. The open-back audio device is configured to contact the ear and the head at contact locations defined by the following conditions: the acoustic module contacts the ear above the ear canal, and the body contacts at least one of the outer ear and the head near the junction of the head and the outer ear, near the upper end of the helix, and near the free distal end of the body, and wherein these contact locations define the vertices of a triangle such that the contact helps to stabilize the open-back audio device on the ear and the head; The body is suspended from the acoustic module and includes a bridging member connected to the acoustic module and a housing further away from the acoustic module than the bridging member, wherein a first plane at least partially coplanar with the inner surface of the acoustic module and a second plane bisecting the bridging member intersect at an acute angle, wherein the bridging member is thinner than the housing, and wherein the inner surface of the bridging member has a smaller radius of curvature than the inner surface of the housing; The acoustic module is configured to position a first acoustic emission opening above the ear canal opening and also has a second acoustic emission opening further away from the ear canal than the first acoustic emission opening. The first and second acoustic emission openings are arranged to emit sound from opposite sides of the electroacoustic transducer, such that the emitted sounds are out of phase so as to cancel each other out in the far field.

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