Earphone

Abstract

The present application discloses an earphone. The earphone comprises a sound-producing unit, an abutting portion, and an ear hook. The ear hook has a symmetrical surface arranged in the length direction of the ear hook. The abutting portion comprises a first housing and a first microphone. The sound-producing portion comprises a second housing and a second microphone. The earphone further comprises a processing circuit for performing noise reduction on the basis of a first sound and a second sound. The earphone further has a first reference plane which, in a worn state, is located below the symmetrical surface and parallel to the symmetrical surface. The distance from the first reference plane to the symmetrical surface is less than or equal to 5 mm. A first sound inlet hole has a sound inlet end located on the outer wall surface of the first housing, and the sound inlet end is entirely located on the side of the first reference plane facing the symmetrical surface.

Description

A type of headphone [Technical Field]

[0001] This application relates to the technical field of electronic devices, specifically to a pair of headphones. [Background Technology]

[0002] Headphones are widely used in people's daily lives, and they can be used with electronic devices such as mobile phones and computers to provide users with sound playback functions. Among them, clip-on headphones are a new type of headphone. They are usually small in size and can be clipped onto the wearer's ear canal. Moreover, clip-on headphones do not block the ear canal, which not only ensures safety in outdoor scenarios, but also makes them more comfortable to wear than in-ear headphones.

[0003] However, the current ear-clip headphones cannot meet the requirements for sound pickup.

[0004] [Summary of the Invention]

[0005] This application provides an earphone, which includes a sound-emitting part, a contact part, and an ear hook. The ear hook connects the sound-emitting part and the contact part. In the wearing state, the sound-emitting part and the contact part are clamped on both sides of the auricle, and the sound-emitting part is located in the concha cavity. The ear hook has a symmetrical surface arranged along the length direction of the ear hook. The contact part includes a first shell and a first microphone disposed in the first shell. The first microphone collects a first sound through a first sound inlet hole on the first shell. The sound-emitting part includes a second shell and a second microphone disposed in the second shell. The second microphone collects a second sound through a second sound inlet hole on the second shell. The earphone also includes a processing circuit for noise reduction based on the first sound and the second sound. The earphone also has a first reference plane located below and parallel to the symmetrical surface in the wearing state. The distance from the first reference plane to the symmetrical surface is less than or equal to 5 mm. The first sound inlet hole has a sound inlet end located on the outer wall surface of the first shell. The entire sound inlet end is located on the side of the first reference plane facing the symmetrical surface.

[0006] In some embodiments, the sound inlet end of the first sound inlet is at least partially located on the side of the symmetry plane facing the first reference plane, and the maximum straight-line distance from the sound inlet end of the first sound inlet on the side of the symmetry plane facing the first reference plane to the symmetry plane is less than or equal to 4 mm.

[0007] In some implementations, the headphones are configured to support both left-ear and right-ear wearing states. There are two first reference planes symmetrically arranged on both sides of a symmetrical plane. One of the first reference planes is located below the symmetrical plane when the headphones are in the left-ear wearing state, and the other first reference plane is located below the symmetrical plane when the headphones are in the right-ear wearing state. The sound inlet of the first sound inlet hole is located entirely between the two first reference planes.

[0008] In some implementations, there are two first sound inlets, with the sound inlet ends of the two first sound inlets located on both sides of the plane of symmetry, and both located as a whole between the two first reference planes.

[0009] In some implementations, the entrance ends of the two first entrance holes are symmetrically arranged with respect to a symmetrical face.

[0010] In some implementations, there is one first microphone, which collects first sound through two first sound inlets, the sound inlets of the two first sound inlets are spaced apart from each other, and the two first sound inlets are connected to each other.

[0011] In some implementations, the sound inlet end of the first sound inlet is located entirely on the side of the plane of symmetry that is away from the first reference plane.

[0012] In some implementations, the minimum straight-line distance from the entrance end of the first entrance hole to the plane of symmetry is greater than or equal to 5 mm.

[0013] In some embodiments, the second sound inlet has a sound inlet end located on the outer wall surface of the second housing, and the minimum straight-line distance between the edge of the sound inlet end of the second sound inlet and the edge of the sound inlet end of the first sound inlet is greater than or equal to 15 mm.

[0014] In some embodiments, along the width direction of the ear hook, the sound inlet ends of the first and second sound inlets are respectively arranged to at least partially overlap with the ear hook.

[0015] In some embodiments, the first sound inlet has a first axial direction pointing to the outside of the first housing, and the second sound inlet has a second axial direction pointing to the outside of the second housing. The angle between the orthographic projection of the first axial direction on the plane of symmetry and the orthographic projection of the second axial direction on the plane of symmetry is greater than or equal to 115 degrees.

[0016] In some embodiments, the first housing includes a main body and a transition portion. The transition portion is disposed on the outer peripheral surface of the main body and is connected to the ear hook. The transition portion is tapered in the direction away from the main body so that the ear hook is smoothly connected to the outer surface of the main body. A first microphone is disposed in the transition portion and a first sound inlet is disposed on the transition portion.

[0017] In some implementations, the processing circuit is further configured to detect wind noise based on a first sound and / or a second sound, and when the detected wind noise is greater than or equal to a preset threshold, control the first microphone to be in a working state and control the second microphone to be in a non-working state.

[0018] The beneficial effects of this application are as follows: By setting the entire sound inlet end of the first sound inlet hole to be located on the side of the first reference plane facing the plane of symmetry, the position of the sound inlet end of the first sound inlet hole is restricted. On the one hand, when the headphones are worn, the sound inlet end of the first sound inlet hole can be largely blocked by the user's earlobe, while the second sound inlet hole located in the sound-emitting part is closer to the user's mouth and is not blocked. This increases the difference between the sound brought in by the first sound inlet hole and the second sound inlet hole, that is, increases the difference between the first sound collected by the first microphone and the second sound collected by the second microphone. On the other hand, it also makes the directionality of the connection between the first sound inlet hole and the second sound inlet hole better relative to the mouth, further increasing the sound pickup difference between the first microphone and the second microphone. This is beneficial to improving the noise reduction effect of the processing circuit using the first sound and the second sound for noise reduction processing, improving the sound pickup effect of the headphones, and enhancing the user experience. [Attached Image Description]

[0019] Figure 1 is a schematic diagram of the wearing state of the earphone embodiment of this application when worn on a human ear;

[0020] Figure 2 is a front view of the structure of the earphone shown in Figure 1;

[0021] Figure 3 is a three-dimensional structural diagram of the headphones shown in Figure 1;

[0022] Figure 4 is a top view of the structure of the earphone shown in Figure 1;

[0023] Figure 5 is a top view of another structure of the earphone shown in Figure 1;

[0024] Figure 6 is a schematic diagram of the cross-sectional structure of the earphone shown in Figure 5 along the cutting line VV;

[0025] Figure 7 is an enlarged schematic diagram of a local area Z of the earphone shown in Figure 4;

[0026] Figure 8 is a top view of another structure of the earphone shown in Figure 1;

[0027] Figure 9 is a schematic diagram of the profile of the section corresponding to the cutting line VV shown in Figure 6;

[0028] Figure 10 is a top view of another structure of the earphone shown in Figure 1;

[0029] Figure 11 is a top view of another structure of the earphone shown in Figure 1;

[0030] Figure 12 is another three-dimensional structural diagram of the earphone shown in Figure 1;

[0031] Figure 13 is a schematic block diagram of the circuit structure of the earphone embodiment shown in Figure 1;

[0032] Figure 14 is a front view schematic diagram of the structure of the sound-producing part shown in Figure 2;

[0033] Figure 15 is a schematic diagram of a cross-sectional structure of the sound-generating part shown in Figure 11 along the cutting line AA;

[0034] Figure 16 is a schematic diagram of another cross-sectional structure of the earphone shown in Figure 5 along the cutting line VV.

Detailed Implementation Methods

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0036] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0037] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0038] As shown in Figure 1, the user's ear EAR may include physiological parts such as the external auditory canal E11, the concha E12, the cymba concha E13, the triangular fossa E14, the antihelix E15, the scaphoid fossa E16, the helix E17, and the antitragus E18. While the external auditory canal E11 has a certain depth and extends to the tympanic membrane of the ear EAR, for ease of description and in conjunction with Figure 1, unless otherwise specified, the external auditory canal E11 specifically refers to its entrance (i.e., the ear canal) away from the tympanic membrane. Furthermore, the physiological parts such as the concha E12, cymba concha E13, and triangular fossa E14 have a certain volume and depth; and the concha E12 is directly connected to the external auditory canal E11, meaning the aforementioned ear canal can be simply considered as being located at the bottom of the concha E12.

[0039] Furthermore, the tragus E19 is located around the external auditory canal of the ear EAR. Compared to the concha E12, cymba conchae E13, and triangular fossa E14, it has a certain depth and volume in three-dimensional space. That is, these parts are concave towards the back of the ear EAR along the direction closer to the user's head, while the tragus E19 protrudes towards the front of the ear EAR along the direction away from the user's head. Here, "front of the ear EAR" is a concept relative to "back of the ear EAR". The former refers to the side of the ear EAR away from the head, such as in Figure 1, while the latter refers to the side of the ear EAR facing the head. Both refer to the user's ear EAR.

[0040] Furthermore, individual differences may exist among different users, leading to variations in the shape, size, and other dimensions of the ear EAR. To facilitate description and reduce (or even eliminate) these individual differences, a simulator containing a head and its (left and right) ear EARs can be manufactured based on ANSI:S3.36, S3.25 and IEC:603187 standards, such as the GRAS45BCKEMAR. Therefore, descriptions such as "user wearing headphones," "headphones in wearing state," and "in wearing state" can refer to the ear EAR of the headphones described in this application worn on the aforementioned simulator. Of course, due to individual differences among users, there may be some differences between the headphones worn by different users and the ear EAR worn on the aforementioned simulator, but such differences should be tolerable.

[0041] It should be noted that in medicine, anatomy, and other fields, the human body can be defined by three basic planes: the sagittal plane, the coronal plane, and the horizontal plane; and three basic axes: the sagittal axis, the coronal axis, and the vertical axis. The sagittal plane is a section perpendicular to the ground along the anteroposterior direction of the body, dividing the body into left and right parts. The coronal plane is a section perpendicular to the ground along the left-right direction of the body, dividing the body into anterior and posterior parts. The horizontal plane is a section parallel to the ground along the vertical direction of the body, dividing the body into superior and inferior parts. Correspondingly, the sagittal axis is the axis along the anteroposterior direction of the body and perpendicular to the coronal plane; the coronal axis is the axis along the left-right direction of the body and perpendicular to the sagittal plane; and the vertical axis is the axis along the vertical direction of the body and perpendicular to the horizontal plane. Furthermore, the "anterior side of the ear EAR" mentioned in this application is a concept relative to "posterior side of the ear EAR." The former refers to the side of the ear EAR away from the head, while the latter refers to the side of the ear EAR facing the head; both refer to the user's ear EAR. Specifically, observing the ear EAR of the simulator along the direction of the human coronal axis yields the anterior contour diagram of the ear EAR shown in Figure 1. Based on this, and referring to Figure 1, the X, Y, and Z directions can be simply considered as the human coronal axis, the human sagittal axis, and the human vertical axis, respectively; the XY, XZ, and YZ planes can be simply considered as the human horizontal plane, the human coronal plane, and the human sagittal plane, respectively.

[0042] This application describes at least one exemplary structure of the earphone 1. As shown in FIG1, FIG1 illustrates the state of the earphone 1 worn on a user's ear EAR. The earphone 1 can be an ear clip-on earphone. As shown in FIGS. 1 to 3, the earphone 1 includes a sound-emitting part 100 for insertion into the concha E12 of a user, an abutment part 300 for abutting against the back of the user's ear, and an ear hook 200 connecting the sound-emitting part 100 and the abutment part 300. In the wearing state, the ear hook 200 can bypass the user's auricle E17, the sound-emitting part 100 and the abutment part 300 form a clamping state on both sides of the user's auricle E17, and the sound-emitting part 100 is located within the concha E12. The sound-emitting part 100 is a sound playback device, which is used to convert electrical signals into sound signals and play them to the wearer. The abutment part 300 forms a clamping state with the sound-emitting part 100 so as to clamp the entire earphone 1 onto the user's ear EAR. In some embodiments, the abutment portion 300 may contain devices such as a battery or a circuit board. Of course, the abutment portion 300 may also be used without a battery, and the battery may be installed in the sound-generating portion 100.

[0043] In some embodiments, as shown in FIG4, the ear hook 200 has a symmetry plane A1 arranged along the length direction F1 of the ear hook 200. Specifically, the symmetry plane A1 of the ear hook 200 refers to the portion of the ear hook 200 arranged along the length direction F1 of the ear hook 200, where the difference between the portions of the ear hook 200 on both sides of the symmetry plane A1 is minimal or identical. That is, if the ear hook 200 is regularly symmetrical, then the portions of the ear hook 200 on both sides of the symmetry plane A1 are identical. If the ear hook 200 is not strictly symmetrical, then the difference between the portions of the ear hook 200 on both sides of the symmetry plane A1 should be minimal among various division methods. For example, the size of the difference can be distinguished by observing the projection of the ear hook 200 on a plane perpendicular to the symmetry plane A1.

[0044] Optionally, as shown in Figures 4, 5, and 6, the contact portion 300 includes a first housing 31 and a first microphone 32 disposed within the first housing 31. The first microphone 32 collects a first sound through a first sound inlet 3101 on the first housing 31. The sound-emitting portion 100 includes a second housing 11 and a second microphone 12 disposed within the second housing 11. The second microphone 12 collects a second sound through a second sound inlet 1101 on the second housing 11. The earphone 1 also includes a processing circuit 400 for noise reduction processing based on the first and second sounds. The earphone 1 further has a first reference plane A2 located below and parallel to the symmetry plane A1 in the wearing state. The distance from the first reference plane A2 to the symmetry plane A1 is less than or equal to 5 mm, for example, it can be 1 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, etc., or other values. The first sound inlet 3101 has a sound inlet end 301 located on the outer wall surface of the first housing 31. External sound is introduced into the first sound inlet 3101 from the sound inlet end 301 and transmitted to the first microphone 32 via the first sound inlet 3101. The entire sound inlet end 301 of the first sound inlet 3101 is located on the side of the first reference plane A2 facing the symmetry plane A1.

[0045] The processing circuit 400 can perform noise reduction processing based on the first sound and the second sound. For example, the first sound inlet 3101 and the second sound inlet 1101 can be set in different positions so that the sound they bring in has a certain difference. This makes the sound collected by the first microphone 32 and the second microphone 12 have different signal amplitudes in the main audio band. The main audio band can be, for example, the human voice audio band. Thus, the processing circuit 400 can use the first sound and the second sound to identify and eliminate noise.

[0046] By setting the sound inlet end 301 of the first sound inlet 3101 to be located on the side of the first reference plane A2 facing the symmetry plane A1, the position of the sound inlet end 301 of the first sound inlet 3101 is restricted. On the one hand, when the earphone 1 is worn, the sound inlet end 301 of the first sound inlet 3101 can be largely blocked by the user's earlobe E17, while the second sound inlet 1101 located in the sound-emitting part 100 is closer to the user's mouth and is not blocked. This increases the difference between the sound brought in by the first sound inlet 3101 and the second sound inlet 1101, that is, increases the difference between the first sound collected by the first microphone 32 and the second sound collected by the second microphone 12. This is beneficial to improving the noise reduction effect of the processing circuit 400 using the first and second sounds for noise reduction processing. On the other hand, it also makes the connection between the first sound inlet 3101 and the second sound inlet 1101 more directional to the mouth, which is beneficial to improving the sound reception effect of the earphone 1 and improving the user experience.

[0047] Optionally, as shown in Figure 4, the sound inlet end 301 of the first sound inlet hole 3101 is at least partially located on the side of the symmetry plane A1 facing the first reference plane A2. The maximum straight-line distance L1 from the sound inlet end 301 of the first sound inlet hole 3101 located on the side of the symmetry plane A1 facing the first reference plane A2 to the symmetry plane A1 is less than or equal to 4mm. For example, it can be 0.5mm, 1mm, 2mm, 2.5mm, 3mm, 3.5mm, etc., or other values.

[0048] Referring to Figure 1, since the user's ear helix E17 is generally convex and arc-shaped, and the upper part along the vertical axis of the human body is more convex than the lower part, when worn, the higher the sound inlet end 301 of the first sound inlet hole 3101 is, the greater the degree of obstruction of the first sound inlet hole 3101 by the user's convex ear helix E17, the greater the difference between the first sound collected by the first microphone 32 and the second sound collected by the second microphone 12, which is more conducive to improving the noise reduction effect.

[0049] By setting the maximum straight-line distance L1 from the sound inlet end 301 of the first sound inlet 3101, located on the side of the symmetry plane A1 facing the first reference plane A2, to the symmetry plane A1, to be less than or equal to 4mm, the user's protruding ear helix E17 can better block the first sound inlet 3101 when worn, and the line connecting the first sound inlet 3101 and the second sound inlet 1101 has better directionality to the mouth, thereby improving the difference between the first sound collected by the first microphone 32 and the second sound collected by the second microphone 12.

[0050] Optionally, as shown in Figure 7, the earphone 1 is configured to support both left-ear and right-ear wearing states, meaning the earphone 1 can be worn by the user's left ear or right ear. There are two first reference planes A2, symmetrically arranged on both sides of the symmetry plane A1. One first reference plane A2 is located below the symmetry plane A1 when the earphone 1 is in the left-ear wearing state, and the other first reference plane A2 is located below the symmetry plane A1 when the earphone 1 is in the right-ear wearing state. The sound inlet end 301 of the first sound inlet hole 3101 is entirely located between the two first reference planes A2.

[0051] The earphone 1 is configured not to be limited to being worn only in the left ear or only in the right ear, but to be worn in both ears. That is, when the user switches the earphone 1 from the left ear to the right ear, or from the right ear to the left ear, the state of the earphone 1 relative to the ear EAR remains unchanged. In other words, the position of the sound outlet 1102 and the pressure relief hole 1103 on the earphone 1 relative to the external auditory canal E11 remains unchanged, and there is no difference in appearance when worn in the left or right ear. Furthermore, the earphone 1 will automatically recognize the ear EAR being worn and use the matching control logic to change the function of the earphone 1 when worn in different ear EARs, such as the selection of the left or right ear channel, or the switching of touch function. By setting the sound inlet end 301 of the first sound inlet hole 3101 to be located between the two first reference planes A2, the sound inlet end 301 of the first sound inlet hole 3101 can be largely blocked by the user's ear helix E17, regardless of whether the earphone 1 is worn in the left or right ear. This ensures that the line connecting the first sound inlet hole 3101 and the second sound inlet hole 1101 has good directional accuracy to the mouth, so that the earphone 1 can achieve good noise reduction effect whether it is worn in the left or right ear. This is beneficial to improving the sound reception effect of the earphone 1 and improving the consistency of the earphone 1 when worn in the left and right ears, thus enhancing the user experience.

[0052] Optionally, as shown in Figure 7, there are two first sound inlets 3101. The sound inlet ends 301 of the two first sound inlets 3101 are located on both sides of the symmetrical plane A1, and both are located between the two first reference planes A2. When the earphone 1 is worn on the left or right ear, the relative positions of the first sound inlet 3101 and the ear EAR are close or even basically the same, so that when the left and right ears of the earphone 1 are interchanged, a relatively similar noise reduction effect can be achieved, which is beneficial to improving the sound reception effect of the earphone 1 and enhancing the user experience.

[0053] Optionally, as shown in Figure 7, the sound inlet ends 301 of the two first sound inlet holes 3101 are symmetrically arranged with respect to the symmetry plane A1 so that the earphone 1 can achieve the same noise reduction effect when the left and right ears are interchanged. In addition, the symmetrical arrangement also helps to improve the aesthetics of the appearance.

[0054] Optionally, as shown in Figure 3 or Figure 4, there is one first microphone 32. The first microphone 32 collects the first sound through two first sound inlets 3101. The sound inlets 301 of the two first sound inlets 3101 are spaced apart from each other, and the two first sound inlets 3101 are interconnected. The two interconnected first sound inlets 3101 help maintain air pressure balance. Specifically, airflow can flow in from one of the first sound inlets 3101 and flow out through the other first sound inlet 3101, thereby helping to reduce wind noise in the first sound collected by the first microphone 32. The structure is simple and can save installation space.

[0055] In some embodiments, the number of first inlet holes 3101 can also be one, and the symmetrical plane A1 passes through the first inlet hole 3101. In this way, the earphone 1 can achieve the same noise reduction effect whether it is worn in the left or right ear. In this case, whether it is worn in the left or right ear, the inlet end 301 of the first inlet hole 3101 can be largely blocked by the user's ear helix E17, and the line connecting the first inlet hole 3101 and the second inlet hole 1101 has good directionality to the mouth, which is beneficial to improving the noise reduction effect, improving the sound reception effect of the earphone 1, and improving the user experience.

[0056] In addition, in some embodiments, the number of first microphones 32 may also be two, with each first microphone 32 corresponding to a first sound inlet 3101. This application does not limit this, and those skilled in the art can choose according to actual needs.

[0057] Optionally, as shown in Figure 8, the earphone 1 can be configured to support only the left ear or only the right ear. The sound inlet end 301 of the first sound inlet hole 3101 is located on the side of the symmetry plane A1 away from the first reference plane A2. This improves the blocking effect of the user's ear helix E17 on the sound inlet end 301 of the first sound inlet hole 3101 when the earphone 1 is worn, and makes the line connecting the first sound inlet hole 3101 and the second sound inlet hole 1101 more pointed towards the mouth. This helps to improve the difference between the sound introduced by the first sound inlet hole 3101 and the second sound inlet hole 1101, thereby improving the noise reduction effect of the earphone 1.

[0058] Optionally, as shown in Figure 8, the minimum straight-line distance L2 from the edge of the sound inlet end 301 of the first sound inlet 3101 to the plane of symmetry A1 is greater than or equal to 5 mm, for example, it can be 5.5 mm, 6 mm, 6.5 mm, 7 mm, etc., and of course, it can be other values. When two interconnected first sound inlets 3101 are provided, the minimum straight-line distance L2 refers to the minimum straight-line distance from the edge of the first sound inlet 3101 closer to the plane of symmetry A1 to the plane of symmetry A1, or it is the smaller of the minimum straight-line distances from the edges of the two first sound inlets 3101 to the plane of symmetry A1.

[0059] By setting the minimum straight-line distance L2 from the sound inlet end 301 of the first sound inlet hole 3101 to the symmetry plane A1 to be greater than or equal to 5mm, the sound inlet end 301 of the first sound inlet hole 3101 is far away from the symmetry plane A1 to a large extent. This helps to improve the blocking effect of the ear helix E17 of the user on the sound inlet end 301 of the first sound inlet hole 3101 when the earphone 1 is worn. This makes the line connecting the first sound inlet hole 3101 and the second sound inlet hole 1101 point more towards the mouth, which helps to improve the noise reduction effect of the earphone 1.

[0060] Optionally, as shown in FIG8, the first housing 31 includes a main body 311, which includes a peripheral sidewall 3111 and two opposing end walls 3112. The peripheral sidewall 3111 is used to contact the back side of the helix E17. The first sound inlet 3101 can also be disposed on the peripheral sidewall 3111 and located on the side of the peripheral sidewall 3111 away from the sound-emitting part 100. In some embodiments, the first sound inlet 3101 can be disposed on the end wall 3112. This application does not limit this, and those skilled in the art can choose according to actual needs. Optionally, as shown in FIG6, the second sound inlet 1101 has a sound inlet end 101 located on the outer wall surface of the second housing 11. The minimum straight-line distance L3 between the edge of the sound inlet end 101 of the second sound inlet 1101 and the edge of the sound inlet end 301 of the first sound inlet 3101 is greater than or equal to 15mm, for example, it can be 15mm, 18mm, 20mm, 30mm, etc., and of course, it can also be other values.

[0061] By setting the minimum straight-line distance L3 between the edge of the sound inlet 101 of the second sound inlet 1101 and the edge of the sound inlet 301 of the first sound inlet 3101 to be greater than or equal to 15mm, the difference between the first sound collected by the first microphone 32 and the second sound collected by the second microphone 12 is improved. This is beneficial to improving the noise reduction effect of the processing circuit 400 using the first and second sounds for noise reduction processing, improving the sound reception effect of the headphones 1, and enhancing the user experience.

[0062] Optionally, as shown in Figures 4 and 5, along the width direction F2 of the ear hook 200, the sound inlet end 301 of the first sound inlet hole 3101 and the sound inlet end 101 of the second sound inlet hole 1101 are respectively arranged to overlap at least partially with the ear hook 200.

[0063] Specifically, the symmetry plane A1 is perpendicular to the width direction F2 of the ear hook 200. A straight line perpendicular to the symmetry plane A1 and parallel to the width direction F2 of the ear hook 200 is used as the reference line A3. When the ear hook 200 is projected onto the reference line A3 along the symmetry plane A1, it has a first projection width S1. When the sound inlet end 301 of the first sound inlet hole 3101 is projected onto the reference line A3 along the symmetry plane A1, it has a second projection width S2. When the sound inlet end 101 of the second sound inlet hole 1101 is projected onto the reference line A3 along the symmetry plane A1, it has a third projection width S3. The second projection width S2 and the third projection width S3 respectively overlap with the first projection width S1 at least partially, so that the ear hook 200 can form a barrier between the sound inlet end 301 of the first sound inlet hole 3101 and the sound inlet end 101 of the second sound inlet hole 1101, thereby improving the difference between the first sound collected by the first microphone 32 and the second sound collected by the second microphone 12, which is beneficial to improving the noise reduction effect of the headphone 1.

[0064] Optionally, as shown in Figure 9, the first sound inlet 3101 has a first axial direction F3 pointing to the outside of the first housing 31, and the second sound inlet 1101 has a second axial direction F4 pointing to the outside of the second housing 11. The angle J1 between the orthographic projection of the first axial direction F3 on the symmetry plane A1 and the orthographic projection of the second axial direction F4 on the symmetry plane A1 is greater than or equal to 115 degrees, for example, it can be 115 degrees, 120 degrees, 125 degrees, 130 degrees, etc., and of course, it can also be other values.

[0065] Specifically, the first axial direction F3 of the first sound inlet 3101 can be determined by the following method: when a reference cylinder matching the size of the first sound inlet 3101 is inserted into the first sound inlet 3101, the axial direction of the reference cylinder is the first axial direction F3 of the first sound inlet 3101. It should be noted that "matching the size" as described here means that the reference cylinder can be inserted into the first sound inlet 3101 precisely and is not easy to fall out of it.

[0066] The method for determining the second axial direction F4 of the second sound inlet 1101 can be referred to the method for determining the first axial direction F3 of the first sound inlet 3101, and will not be repeated here.

[0067] By setting the angle J1 between the orthographic projection of the first axial direction F3 on the symmetry plane A1 and the orthographic projection of the second axial direction F4 on the symmetry plane A1 to be greater than or equal to 115 degrees, the orientations of the first sound inlet 3101 and the second sound inlet 1101 are different, and thus the sound they bring in is also different. This further improves the difference between the first sound collected by the first microphone 32 and the second sound collected by the second microphone 12, which is beneficial to improving the noise reduction effect of the headphones 1.

[0068] Optionally, as shown in Figures 4 and 8, the first housing 31 includes a main body 311 and a transition portion 312. The transition portion 312 is disposed on the outer peripheral surface of the main body 311 and connects to the ear hook 200. The transition portion 312 is tapered in the direction away from the main body 311, so that the ear hook 200 is smoothly connected to the outer surface of the main body 311. The first microphone 32 is disposed within the transition portion 312, and the first sound inlet 3101 is disposed on the transition portion 312, so as to make full use of the space of the transition portion 312, which is beneficial to improving the space utilization of the earphone 1 and making the structure of the earphone 1 more compact.

[0069] Optionally, the processing circuit 400 is further configured to detect wind noise based on the first sound and / or the second sound, and when the detected wind noise is greater than or equal to a preset threshold, control the first microphone 32 to be in a working state and control the second microphone 12 to be in a non-working state. Here, "working state" means that the microphone is turned on and the sound it collects can be used by the processing circuit 400, while "non-working state" means that the microphone is turned off, or that although the microphone is turned on, the sound it collects is not used by the processing circuit 400.

[0070] The processing circuit 400 performs wind noise detection based on the first sound and / or the second sound, which means that the processing circuit 400 identifies the characteristics of the sound signals in the first sound and / or the second sound to determine whether there are wind noise signals, so as to detect whether there is wind noise and how strong the wind noise is.

[0071] Since the sound inlet 301 of the first sound inlet 3101 is largely blocked by the user's earlobe E17 when the ear is in use, while the sound inlet 101 of the second sound inlet 1101 is not blocked, the wind noise transmitted through the second sound inlet 1101 will be greater than the sound transmitted through the first sound inlet 3101. Therefore, when the processing circuit 400 detects that the wind noise is greater than or equal to a preset threshold, it controls the first microphone 32 to be in working state and controls the second microphone 12 to be in non-working state, thereby preventing the second microphone 12 from picking up excessive wind noise and affecting the sound reception effect of the headphones 1, which is beneficial to improving the user experience.

[0072] In some implementations, as shown in Figure 5, the contact part 300 includes two first microphones 32, which are used to collect a first sound respectively. The sound-emitting part 100 includes a second microphone 12, which is used to collect a second sound. The earphone 1 also includes a detection element 500 and a processing circuit 400. The detection element 500 is used to detect the relative positional relationship between the two first microphones 32 in the wearing state. This relative positional relationship can refer to the relative vertical relationship between the two first microphones 32 in the gravity direction F5 in the wearing state. The processing circuit 400 controls the one of the two first microphones 32 that is relatively higher in the gravity direction F5 to be in the working state, and controls the other one that is relatively lower in the gravity direction F5 to be in the non-working state, based on the detection result of the detection element 500. Furthermore, it performs noise reduction processing based on the first sound collected by the first microphone 32 in the working state and the second sound collected by the second microphone 12.

[0073] The term "working state" refers to the microphone being turned on and the sound it collects being usable by the processing circuit 400, while "non-working state" refers to the microphone being turned off, or the microphone being turned on but the sound it collects not being usable by the processing circuit 400.

[0074] On the one hand, when the earphone 1 is worn, the higher the position of the first microphone 32, the easier it is to be blocked by the ear helix E17, resulting in a greater difference in sound pickup between the first microphone 32 and the second microphone 12. On the other hand, when the earphone 1 is worn, the higher the position of the first microphone 32, the better the connection between the first microphone 32 and the second microphone 12 can point towards the mouth, which also makes the difference in sound pickup between the first microphone 32 and the second microphone 12 greater. Therefore, by setting two first microphones 32, regardless of whether the earphone 1 is worn in the left or right ear, the one of the two first microphones 32 that is relatively higher along the direction of gravity F5 is always in working condition. This helps to improve the difference between the first sound picked up by the first microphone 32 and the second sound picked up by the second microphone 12, which helps to improve the noise reduction effect of the earphone 1. While realizing the left and right ear interchangeability of the earphone 1, the sound pickup effect of the earphone 1 is ensured, which helps to improve the user experience.

[0075] Optionally, as shown in Figure 10, the ear hook 200 has a symmetrical surface A1 arranged along the length direction F1 of the ear hook 200, and the abutment part 300 further includes a first housing 31. The first housing 31 is provided with two first sound inlets 3101. Each first microphone 32 collects first sound through a corresponding first sound inlet 3101. The two first sound inlets 3101 each have a sound inlet end 301 located on the outer wall surface of the first housing 31. The sound inlet ends 301 of the two first sound inlets 3101 are arranged on both sides of the symmetrical surface A1.

[0076] By setting a corresponding first inlet hole 3101 for each of the two first microphones 32, and setting the inlet ends 301 of the two first inlet holes 3101 on both sides of the symmetry plane A1, when the first microphone 32 that is relatively higher along the direction of gravity F5, that is, the first microphone 32 located above the symmetry plane A1, is in working condition, the inlet ends 301 of its corresponding first inlet holes 3101 are also located on the symmetry plane A1. In this way, regardless of whether the earphone 1 is worn in the left or right ear, the user's ear helix E17 can block the first microphone 32 in working condition to a large extent, and make the connection between the first microphone 32 in working condition and the second microphone 12 more pointed towards the mouth, thereby improving the difference between the first sound collected by the first microphone 32 and the second sound collected by the second microphone 12, improving the noise reduction effect of the earphone 1, and ensuring the sound reception effect of the earphone 1 while realizing the left and right ear interchange function of the earphone 1, which is conducive to improving the user experience.

[0077] Optionally, as shown in Figure 10, the sound inlet ends 301 of the two first sound inlet holes 3101 are symmetrically arranged with respect to the symmetry plane A1, so that the two first sound inlet holes 3101 can achieve the same sound input effect when the left and right ears of the earphone 1 are interchanged. This allows the earphone 1 to achieve good noise reduction effect whether it is worn in the left or right ear, and also helps to improve the aesthetics of the earphone 1.

[0078] Optionally, as shown in FIG10, the first housing 31 includes a main body 311, the main body 311 including a peripheral sidewall 3111 and two oppositely arranged end walls 3112. The peripheral sidewall 3111 is used to contact the back side of the ear helix E17. The two first sound inlets 3101 are respectively disposed on the two end walls 3112 of the abutment portion 300, thereby further improving the blocking effect of the user's ear helix E17 on the first sound inlet 3101 corresponding to the first microphone 32 in the working state when wearing it, so that the connection between the first microphone 32 and the second microphone 12 in the working state can be better pointed to the mouth, thereby effectively improving the difference between the first sound and the second sound, which is conducive to the processing circuit 400 to achieve a good noise reduction effect.

[0079] Optionally, as shown in Figure 10, on the vertical direction F6 of the plane of symmetry A1, the shortest straight distance L4 between the sound inlet ends 301 of the two first sound inlet holes 3101 is greater than or equal to 10mm, for example, it can be 11mm, 12mm, 13mm, 15mm, 18mm, 20mm, etc., and of course, it can also be other values.

[0080] By setting the shortest straight-line distance L4 along the hole edge of the sound inlet end 301 of the two first sound inlet holes 3101 to be greater than or equal to 10mm, so that there is a certain distance between the two first sound inlet holes 3101, when the earphone 1 is worn, the first sound inlet hole 3101 corresponding to the first microphone 32 in the working state can be better blocked by the user's ear helix E17, and the connection between the first microphone 32 and the second microphone 12 in the working state can be better pointed to the mouth, thereby improving the difference between the sound collected by the first microphone 32 and the second microphone 12 and improving the noise reduction effect of the earphone 1.

[0081] Optionally, as shown in Figure 10, the shortest straight-line distance L5 from the sound inlet end 301 of the two first sound inlet holes 3101 to the plane of symmetry A1 is greater than or equal to 5mm, for example, it can be 5.5mm, 6mm, 8mm, 10mm, 15mm, etc., and of course, it can also be other values.

[0082] This arrangement ensures that the sound inlet end 301 of the two first sound inlet holes 3101 is at a certain distance from the symmetry plane A1. In this way, when the earphone 1 is worn, the first sound inlet hole 3101 corresponding to the first microphone 32 in the working state can be better blocked by the user's ear helix E17, which helps to improve the difference between the sound collected by the first microphone 32 and the second microphone 12. Furthermore, the connection between the first microphone 32 and the second microphone 12 in the working state can be better pointed towards the mouth, thus improving the noise reduction effect of the earphone 1.

[0083] Optionally, as shown in FIG11, both first sound inlets 3101 are disposed on the peripheral sidewall 3111 of the abutment portion 300, and are located on the side of the peripheral sidewall 3111 opposite to the sound-emitting portion 100.

[0084] Since at least one of the two end walls 3112 of the contact portion 300 is provided with an antenna for wireless radio frequency connection of the earphone 1 and / or a touch area for touch operation by the user, if the first sound inlet 3101 is provided on the end wall 3112, it may cause interference between the antenna and / or the touch area and the first sound inlet. Therefore, by providing the first sound inlet 3101 on the peripheral side wall 3111, the possibility of interference between the first sound inlet 3101 and the antenna and / or the touch area can be effectively reduced, which is beneficial to improving the stability and reliability of the earphone 1.

[0085] Optionally, the processing circuit 400 is configured to detect wind noise based on the first sound and / or the second sound. When the detected wind noise is greater than or equal to a preset threshold, the processing circuit 400 also controls the one of the two first microphones 32 with less wind noise to be in working state, and controls the other one of the two first microphones 32 to be in non-working state, so that the headphones 1 can obtain the first sound with relatively less wind noise, thereby helping to achieve good sound reception of the headphones 1 and improving the user experience.

[0086] Optionally, the processing circuit 400 is also configured to detect wind noise based on the first sound and / or the second sound, and when the detected wind noise is greater than or equal to a preset threshold, the processing circuit 400 also controls the other of the two first microphones 32 that is relatively lower along the direction of gravity F5 to be in working state, and controls the second microphone 12 to be in non-working state.

[0087] Since the sound inlet end 301 of the first sound inlet 3101 is largely blocked by the user's earlobe E17 when the ear is worn, while the sound-emitting part 100 is located in the concha E12 and is not blocked, the wind noise of the sound collected by the second microphone 12 will be greater than that of the sound collected by the first microphone 32. Therefore, when the wind noise is detected to be greater than or equal to a preset threshold, the processing circuit 400 can control the second microphone 12 to be in a non-working state while one of the two first microphones 32 is in a working state. Furthermore, since the sound inlet end 301 of the first sound inlet 3101 of the one of the two first microphones 32 that is relatively lower along the direction of gravity F5 is closer to the user's mouth, in some embodiments, only the relatively lower first microphone 32 is in a working state. The first sound collected by this first microphone 32 can collect the user's speech as clearly and completely as possible while taking into account low wind noise, which is conducive to achieving good sound reception of the earphone 1 and improving the user's experience.

[0088] Optionally, as shown in Figure 12, the sound-emitting part 100 includes a second housing 11, on which a second sound inlet 1101 is provided. The second microphone 12 collects a second sound through the second sound inlet 1101. The second sound inlet 1101 has a sound inlet end 101 located on the outer wall surface of the second housing 11. The minimum straight-line distance L3 between the edge of the sound inlet end 301 of the first sound inlet 3101 and the edge of the sound inlet end 101 of the second sound inlet 1101 is greater than or equal to 15mm, for example, it can be 15mm, 17mm, 20mm, 25mm, etc., and of course, it can also be other values.

[0089] By setting the minimum straight-line distance L3 between the edge of the sound inlet 301 of the first sound inlet 3101 and the edge of the sound inlet 101 of the second sound inlet 1101 to be greater than or equal to 15mm, it is ensured that there is a certain difference between the sound introduced by the first sound inlet 3101 and the second sound inlet 1101, which is beneficial for the processing circuit 400 to perform good noise reduction processing and improve the noise reduction effect of the headphone 1.

[0090] Optionally, as shown in Figure 12, the first sound inlet 3101 has a first axial direction F3 pointing to the outside of the first housing 31, and the second sound inlet 1101 has a second axial direction F4 pointing to the outside of the second housing 11. The angle between the orthographic projection of the first axial direction F3 on the symmetry plane A1 and the orthographic projection of the second axial direction F4 on the symmetry plane A1 is greater than or equal to 115 degrees, for example, it can be 115 degrees, 120 degrees, 125 degrees, 130 degrees, etc., and of course, it can also be other values.

[0091] In this embodiment, the method for determining the first axial direction F3 of the first sound inlet 3101 and the method for determining the second axial direction F4 of the second sound inlet 1101 can be the same as or similar to the aforementioned embodiments, and will not be repeated here.

[0092] By setting the angle between the orthographic projection of the first axial direction F3 on the symmetry plane A1 and the orthographic projection of the second axial direction F4 on the symmetry plane A1 to be greater than or equal to 115 degrees, the first sound inlet 3101 and the second sound inlet 1101 face different directions, thereby ensuring that there is a certain difference between the sound introduced by the first sound inlet 3101 and the second sound inlet 1101, effectively improving the difference between the first sound and the second sound, which is beneficial to improving the noise reduction effect of the headphone 1.

[0093] Optionally, as shown in Figures 5 and 13, the earphone 1 further includes a switching device 600. The two first microphones 32 are connected to the same audio port of the processing circuit 400 via the switching device 600. The processing circuit 400 controls the one of the two first microphones 32 that is relatively higher along the direction of gravity F5 to be connected to the processing circuit 400 so that it is in working state, and disconnects the other one that is relatively lower along the direction of gravity F5 from the processing circuit 400 so that it is in non-working state.

[0094] By setting the switching device 600, the processing circuit 400 can switch the two first microphones 32 according to the detection results of the detection element 500, which helps to improve the switching efficiency and reliability of the headset 1.

[0095] In some embodiments, the switching between the two first microphones 32 can also be achieved solely through software, which is within the understanding of those skilled in the art and will not be elaborated upon here.

[0096] In some embodiments, as shown in Figures 6 and 9, the sound-emitting part 100 includes a housing and a microphone and a sound-emitting component 13 disposed within the housing. The housing can be the aforementioned second housing 11, and the microphone can be the aforementioned second microphone 12. The second housing 11 is provided with an inlet hole and an outlet hole 1102. The inlet hole can be the aforementioned second inlet hole 1101. The second microphone 12 collects external sound through the second inlet hole 1101, and the sound emitted by the sound-emitting component 13 is transmitted outward through the outlet hole 1102. The second inlet hole 1101 can be used to introduce sound into the second microphone 12, and the second microphone 12 can be used to collect the introduced sound. The second sound inlet 1101 has a sound inlet end 101 located on the outer wall surface of the second housing 11, and the sound outlet 1102 has a first sound outlet end 102 located on the outer wall surface of the second housing 11, as shown in Figure 9. There is a first shortest straight line segment L6 between the edge of the sound inlet end 101 of the second sound inlet 1101 and the edge of the first sound outlet end 102. The length of the first shortest straight line segment L6 is greater than or equal to 9mm, for example, it can be 9mm, 10mm, 12mm, 15mm, etc., and of course, it can also be other values.

[0097] Since sound propagation follows the inverse square law, meaning that the intensity of sound is inversely proportional to the square of the distance from the sound source, the farther away from the sound source, the lower the sound intensity. By setting the length of the first shortest straight segment L6 to be greater than or equal to 9mm, the sound transmitted outward from the sound outlet 1102 is effectively prevented from being introduced into the second sound inlet 1101, thereby interfering with the sound collected by the second microphone 12. This effectively reduces the possibility of echo when the user makes a call using the headset 1, which is beneficial to improving the user's call experience.

[0098] Optionally, as shown in Figure 9, along the outer wall surface of the second housing 11, there is a shortest wall line connecting the edge of the sound inlet end 101 of the second sound inlet hole 1101 and the edge of the sound outlet end 102, which shares an endpoint with the first shortest straight line segment L6. This is referred to as the first shortest wall line L7. Specifically, the first shortest wall line L7 is the shortest arc segment formed by the contour line along the outer wall surface of the second housing 11 between the edge of the sound inlet end 101 of the second sound inlet hole 1101 and the edge of the sound outlet end 102. The first shortest wall line L7 is configured to protrude outwards from the second housing 11, and its length is greater than or equal to 13mm, for example, it can be 13mm, 15mm, 18mm, 20mm, etc., or other values.

[0099] By setting the length of the first shortest wall connection line L7 to be greater than or equal to 13mm, it is beneficial to improve the sound isolation effect of the second housing 11 between the second sound inlet 1101 and the sound outlet 1102, and further reduce the possibility of the sound transmitted outward from the sound outlet 1102 interfering with the sound collected by the second microphone 12.

[0100] Optionally, the ratio between the length of the first shortest wall line L7 and the length of the first shortest straight line segment L6 is between 0.5 and 0.75, for example, it can be 0.55, 0.65, 0.7, etc., and of course, it can be other values.

[0101] By setting the ratio between the length of the first shortest wall line L7 and the length of the first shortest straight line segment L6 to between 0.5 and 0.75, it is beneficial to further improve the sound isolation effect of the second housing 11 between the second inlet hole 1101 and the outlet hole 1102, and to improve the sound reception effect of the headphones 1.

[0102] Optionally, as shown in Figures 5 and 6, the ear hook 200 has a symmetrical surface A1 arranged along the length direction F1 of the ear hook 200. The symmetrical surface A1 passes through the sound inlet end 101 of the second sound inlet hole 1101 and the first sound outlet end 102, respectively. In the wearing state, the sound inlet end 101 of the second sound inlet hole 1101 is located on the side of the second housing 11 away from the helix E17, and is closer to the ear hook 200 than the first sound outlet end 102.

[0103] By setting the sound inlet 101 and the sound outlet 102 of the second sound inlet 1101 to intersect with the symmetry plane A1, the headphone 1 becomes more symmetrical in appearance and can be used in both the left and right ears at the same time, which is conducive to realizing the function of interchangeable left and right ears and effectively improving the adaptability of the headphone 1.

[0104] Furthermore, the sound inlet 101 of the second sound inlet 1101 is positioned on the side of the second housing 11 away from the earlobe E17 when worn, allowing the second sound inlet 1101 to better guide the user's speech, thereby effectively improving the usability of the earphone 1. When worn, the sound inlet 101 of the second sound inlet 1101 is closer to the ear hook 200 than the first sound outlet 102, avoiding the sound-generating component 13, allowing the sound-generating component 13 to occupy a relatively large space and improving the space utilization within the second housing 11. When worn, the first sound outlet 102 of the sound outlet 1102 can be closer to the ear canal than the sound inlet 101 of the second sound inlet 1101, making it easier for the sound transmitted outward by the sound-generating component 13 through the first sound outlet 102 to reach the user's ear canal.

[0105] Optionally, as shown in Figure 9, the second inlet 1101 has an axial direction pointing outward from the second housing 11, which is referred to as the second axial direction F4. The outlet 1102 has a second outlet 103 located on the inner wall of the second housing 11, that is, the sound emitted by the sound-generating component 13 is transmitted to the outside of the earphone 1 through the second outlet 103 and the first outlet 102 in sequence. The second sound inlet 1101 has a second shortest straight line segment L8 between the edge of the sound inlet 101 and the edge of the sound outlet 103. The endpoint of the first shortest straight line segment L6 on the edge of the sound outlet 102 is taken as the first reference point K1, and the endpoint of the second shortest straight line segment L8 on the edge of the sound outlet 103 is taken as the second reference point K2. The sound outlet 1102 has a reference direction F7 pointing from the second reference point K2 to the first reference point K1. The angle J2 between the orthographic projection of the second axial direction F4 on the symmetry plane A1 and the orthographic projection of the reference direction F7 on the symmetry plane A1 is greater than or equal to 70 degrees, for example, it can be 70 degrees, 75 degrees, 80 degrees, 90 degrees, etc., and of course, it can also be other values.

[0106] By setting the angle J2 between the orthographic projection of the second axial direction F4 onto the symmetry plane A1 and the orthographic projection of the reference direction F7 onto the symmetry plane A1 to be greater than or equal to 70 degrees, the second inlet hole 1101 and the outlet hole 1102 have different orientations. This effectively reduces the possibility that the sound transmitted from the outlet hole 1102 will be introduced into the second inlet hole 1101, effectively reduces the possibility that the sound emitted by the sound-generating component 13 will interfere with the sound collected by the second microphone 12, and effectively reduces the possibility that the user will experience an echo when making a call using the headset 1, which is beneficial to improving the user's call experience.

[0107] Optionally, as shown in FIG3, the first sound outlet 102 is arranged in a strip shape, and on the symmetry plane A1, the hole of the first sound outlet 102 has a first end point K6 and a second end point K7 spaced apart along the length direction of the first sound outlet 102. The first end point K6 is closer to the sound inlet 101 of the second sound inlet hole 1101 than the second end point K7.

[0108] By setting the first sound output end 102 in a strip shape, while ensuring the area of ​​the sound output hole 1102, when the earphone 1 is worn by the user, since the second shell 11 and the concha E12 of the user's ear EAR are not completely fitted, but there is a space that gradually increases from the contact area between the second shell 11 and the ear EAR towards the ear canal opening, forming a wedge-shaped space, thus forming a tube structure between the sound output hole 1102 and the concha E12. By using the concha E12 as a reflective wall, sound wave reflection enhancement can be formed. The sound output from the sound output hole 1102 will be enhanced by reflection within the concha E12, thereby increasing the sound pressure at the ear canal opening through the reflection effect, so that the user can hear a stronger sound and effectively improve the user experience.

[0109] Optionally, as shown in Figures 5 and 9, the first sound outlet 102 and the second sound inlet 1101 are symmetrically arranged with respect to the symmetry plane A1. The first shortest straight line segment L6 connects the first endpoint K6 and the point closest to the first endpoint K6 along the edge of the sound inlet 101 of the second sound inlet 1101. The earphone 1 also has a third shortest straight line segment L9 connecting the first endpoint K6 and the second endpoint K7. The included angle J3 between the first shortest straight line segment L6 and the third shortest straight line segment L9 is less than or equal to 75 degrees, for example, it can be 60 degrees, 65 degrees, 70 degrees, 75 degrees, etc., and of course, it can also be other values.

[0110] By limiting the orientation of the sound outlet 1102 relative to the second sound inlet 1101 to less than or equal to 75 degrees between the first shortest straight line segment L6 and the third shortest straight line segment L9, the possibility of sound transmitted from the sound outlet 1102 being introduced into the second sound inlet 1101 is effectively reduced, which is beneficial to improving the sound reception effect of the headphone 1.

[0111] Optionally, the length of the third shortest straight segment L9 is greater than or equal to 7mm, for example, it can be 7mm, 10mm, 13mm, 15mm, etc., and of course, it can be other values.

[0112] By setting the length of the third shortest straight segment L9 to be greater than or equal to 7mm, the size of the resulting sound hole 1102 is made to better match the size and shape of the concha E12 and the ear canal, making it easier to form a horn structure that enhances sound, effectively improving the sound output of the headphone 1, effectively increasing the sound pressure at the ear canal, and effectively increasing the listening volume.

[0113] Optionally, as shown in Figure 9, the second sound inlet 1101 has an axial direction pointing to the outside of the second housing 11. This axial direction is called the second axial direction F4. The angle J4 between the second axial direction F4 and the first shortest straight line segment L6 is greater than or equal to 40 degrees, for example, it can be 40 degrees, 45 degrees, 50 degrees, 55 degrees, etc., and of course, it can also be other values.

[0114] By setting the angle J4 between the second axial direction F4 and the first shortest straight segment L6 to be greater than or equal to 40 degrees, the orientation of the second inlet hole 1101 relative to the outlet hole 1102 is further restricted, thereby effectively reducing the possibility that the sound transmitted from the outlet hole 1102 is introduced into the second inlet hole 1101, which is beneficial to improving the sound reception effect of the headphone 1.

[0115] Optionally, as shown in Figure 9, on the plane of symmetry A1, the outer wall of the second housing 11 has a third reference point K3 that is closest to the abutment portion 300, and the inner contour of the ear hook 200 has a fourth reference point K4 that is furthest from the third reference point K3 in the area near the edge of the helix when worn. The outer wall of the second housing 11 further has a fifth reference point K5 that is furthest from the fourth reference point K4, and the first sound outlet 102 and the second sound inlet 1101 are located on both sides of the fifth reference point K5.

[0116] In its natural state, the outer wall surface of the sound-emitting part 100 and the outer wall surface of the abutting part 300 do not come into contact. The outer wall surface of the sound-emitting part 100 and the outer wall surface of the abutting part 300 have a point of minimum distance. The endpoint of the line connecting these two points on the outer wall surface of the second housing 11 is the third reference point K3. If, in its natural state, the outer wall surface of the sound-emitting part 100 and the outer wall surface of the abutting part 300 come into contact, the length of the shortest line connecting them is nearly zero. In this case, the third reference point K3 should be the midpoint of the arc formed by the contact area between the outer wall surfaces of the sound-emitting part 100 and the abutting part 300.

[0117] In the wearing state, the symmetry plane A1 is nearly parallel to the horizontal plane of the human body. Within the symmetry plane A1, the ear hook 200, the sound-emitting part 100, and the abutment part 300 have an inner contour, which includes at least a fourth reference point K4. The fourth reference point K4 is the reference point in the inner contour that is furthest from the third reference point K3. In the wearing state, the fourth reference point K4 is a reference point located on the inner contour of the ear hook 200 and corresponding to the edge of the helix E17 (e.g., the top / outermost edge of the helix E17). The fourth reference point K4 can be a turning point of the inner contour. For example, the inner contour is a contour line that protrudes away from the helix E17. The radius of curvature of the part of the inner contour located near the edge of the helix E17 gradually increases, then decreases, and then gradually increases again from the fourth reference point K4 towards the sound-emitting part 100 and the abutment part 300. The fifth reference point K5 is the position of the sound-emitting part 100 that is furthest from the fourth reference point K4.

[0118] By setting the first sound output end 102 and the sound input end 101 of the second sound input hole 1101 on both sides of the fifth reference point K5, the second shell 11 protruding outward between the first sound output end 102 and the sound input end 101 of the second sound input hole 1101 can isolate the sound transmitted from the first sound output end 102, effectively reducing the possibility that the sound transmitted from the first sound output end 102 will be introduced into the second sound input hole 1101, which is beneficial to improving the sound reception effect of the headphone 1.

[0119] Optionally, as shown in Figure 9, the edge of the sound inlet 101 of the second sound inlet 1101 has a fourth shortest straight line segment L10 between the edge of the sound inlet 101 and the fifth reference point K5. The ratio between the length of the fourth shortest straight line segment L10 and the length of the first shortest straight line segment L6 is between 0.71 and 0.96, for example, it can be 0.75, 0.80, 0.85, 0.90, 0.95, etc., and of course, it can also be other values.

[0120] By setting the ratio between the length of the fourth shortest straight segment L10 and the length of the first shortest straight segment L6 to between 0.71 and 0.96, the position of the sound inlet 101 of the second sound inlet 1101 relative to the fifth reference point K5 is reasonably set, reducing the possibility that the sound transmitted from the sound outlet 1102 is introduced into the second sound inlet 1101, which is beneficial to improving the sound reception effect of the headphone 1.

[0121] In some embodiments, as shown in Figures 14 and 15, the sound-generating part 100 includes a housing and a microphone and a sound-generating assembly 13 disposed within the housing. The housing may be the aforementioned second housing 11, and the microphone may be the aforementioned second microphone 12. The sound-generating assembly 13 has at least one diaphragm 131. The sound-generating assembly 13 cooperates with the second housing 11 to form a first acoustic cavity 1301 and a second acoustic cavity 1302 located on both sides of the diaphragm 131. The second housing 11 is provided with an inlet hole, an outlet hole 1102, and a pressure relief hole 1103. The inlet hole may be the aforementioned second inlet hole 1101. The second microphone 12 collects external sound through the second inlet hole 1101. Sound from the first acoustic cavity 1301 is transmitted to the user's ear canal through the outlet hole 1102, and sound from the second acoustic cavity 1302 is transmitted to the outside of the second housing 11 through the pressure relief hole 1103. Specifically, the first acoustic cavity 1301 is the place where the diaphragm 131 vibrates to push air to form sound waves for the user to listen to, and the second acoustic cavity 1302 is connected to the pressure relief hole 1103 and thus connected to the outside world, for balancing the air pressure inside the second housing 11. The second sound inlet 1101 and the pressure relief hole 1103 are respectively arranged adjacent to the ear hook 200. The sound outlet 1102 is arranged away from the ear hook 200 compared to the second sound inlet 1101 and the pressure relief hole 1103. The second sound inlet 1101 has a sound inlet end 101 located on the outer wall surface of the second housing 11. The pressure relief hole 1103 has a sound outlet end 104 located on the outer wall surface of the second housing 11. There is a shortest straight line segment between the edge of the sound inlet end 101 of the second sound inlet 1101 and the edge of the sound outlet end 104 of the pressure relief hole 1103, which is called the fifth shortest straight line segment L12. The length of the fifth shortest straight line segment L12 is less than or equal to 4mm, for example, it can be 1mm, 2mm, 3mm, 3.5mm, etc., and of course, it can also be other values. The ear hook 200 is further configured to block the sound from the pressure relief hole 1103 from being transmitted to the second sound inlet 1101.

[0122] By arranging the second sound inlet 1101 and the pressure relief hole 1103 adjacent to the ear hook 200, and setting the sound outlet 1102 relatively far away from the ear hook 200, and setting the length of the fifth shortest straight segment L12 to be less than or equal to 4mm, the sound outlet 1102 maintains a large distance from the second sound inlet 1101 and the pressure relief hole 1103, effectively reducing the possibility of interference caused by the sound transmitted outward from the sound outlet 1102 to the second sound inlet 1101 and the pressure relief hole 1103. Furthermore, the ear hook 200 can also provide a certain degree of isolation between the second sound inlet 1101 and the pressure relief hole 1103, thereby effectively reducing interference between the pressure relief hole 1103 and the second sound inlet 1101, effectively improving the reliability of the headphone 1's operation, and contributing to improved sound reception performance.

[0123] Optionally, as shown in FIG16, the ear hook 200 forms a connection area 201 on the second housing 11, and the sound inlet end 101 of the second sound inlet hole 1101 and the sound outlet end 104 of the pressure relief hole 1103 are disposed on opposite sides of the connection area 201. Alternatively, as shown in FIG6, the second housing 11 includes a body part 111 and a connecting part 112, the connecting part 112 connecting the body part 111 and the ear hook 200, and the sound inlet end 101 of the second sound inlet hole 1101 and the sound outlet end 104 of the pressure relief hole 1103 are disposed on opposite sides of the connecting part 112.

[0124] By placing the sound inlet end 101 of the second sound inlet hole 1101 and the sound outlet end 104 of the pressure relief hole 1103 on opposite sides of the connection area 201 or the connection part 112, the second sound inlet hole 1101 and the pressure relief hole 1103 are isolated by the connection area 201 or the connection part 112, which effectively reduces the possibility of mutual interference between the pressure relief hole 1103 and the second sound inlet hole 1101, effectively reduces the possibility of the sound transmitted by the pressure relief hole 1103 being introduced into the second sound inlet hole 1101, effectively reduces the possibility of sound leakage, echo and other phenomena, and helps to improve the sound reception effect of the headphone 1.

[0125] Optionally, as shown in Figure 6, in the wearing state, the second sound inlet 1101 is located on the side of the connection area 201 or the connection part 112 away from the helix, and the pressure relief hole 1103 is located on the other side of the connection position or the connection part 112 near the helix.

[0126] By placing the second sound inlet 1101 on the side of the connection area 201 or the connection part 112 away from the helix, the user's helix E17 is prevented from blocking the second sound inlet 1101 when the ear is in use, thereby affecting the sound input of the second sound inlet 1101 and improving the sound reception effect of the headphone 1.

[0127] Optionally, as shown in FIG6, the connecting portion 112 is tapered in the direction away from the main body 111, so that the ear hook 200 is smoothly connected to the outer surface of the main body 111, thereby improving the aesthetics of the earphone 1. The second microphone 12 is disposed in the connecting portion 112, and the second sound inlet 1101 is disposed on the connecting portion 112, so as to make full use of the space of the connecting portion 112, effectively improve the space utilization of the earphone 1, and make the structure of the earphone 1 more compact.

[0128] Optionally, as shown in Figure 5, along the width direction F2 of the ear hook 200, the sound inlet end 101 of the second sound inlet hole 1101 and the sound outlet end 104 of the pressure relief hole 1103 are respectively arranged to at least partially overlap with the ear hook 200.

[0129] Specifically, the symmetry plane A1 is perpendicular to the width direction F2 of the ear hook 200. A straight line perpendicular to the symmetry plane A1 and parallel to the width direction F2 of the ear hook 200 is used as the reference line A3. When the ear hook 200 is projected onto the reference line A3 along the symmetry plane A1, it has a first projection width S1. When the sound inlet end 101 of the second sound inlet hole 1101 is projected onto the reference line A3 along the symmetry plane A1, it has a third projection width S3. When the sound outlet end 104 of the pressure relief hole 1103 is projected onto the reference line A3 along the symmetry plane A1, it has a fourth projection width S4. The third projection width S3 and the fourth projection width S4 respectively overlap with the first projection width S1 at least partially, so that the ear hook 200 can form a barrier between the sound inlet end 101 of the second sound inlet hole 1101 and the sound outlet end 104 of the pressure relief hole 1103, thereby effectively reducing the possibility that the sound transmitted by the pressure relief hole 1103 is introduced into the second sound inlet hole 1101, which is beneficial to improving the sound reception effect of the headphone 1.

[0130] Optionally, the maximum dimension of the overlapping portion of the second sound inlet 101 and the ear hook 200 along the width direction F2 of the ear hook 200 is equal to the maximum dimension of the second sound inlet 101 along the width direction F2. As shown in Figure 5, the maximum dimension of the second sound inlet 101 along the width direction F2 is the dimension of the third projected width S3. The maximum dimension of the overlapping portion of the second sound inlet 101 and the ear hook 200 along the width direction F2 of the ear hook 200 is the dimension of the overlapping portion of the third projected width S3 and the first projected width S1. In other words, in the width direction F2 of the ear hook 200, the second sound inlet 101 and the ear hook 200 completely overlap, that is, the third projected width S3 is completely covered by the first projected width S1.

[0131] Optionally, the ratio of the maximum dimension of the overlapping portion of the sound outlet 104 of the pressure relief hole 1103 and the ear hook 200 along the width direction F2 to the maximum dimension of the sound outlet 104 of the pressure relief hole 1103 along the width direction F2 is greater than or equal to 90%. As shown in Figure 5, the maximum dimension of the sound outlet 104 of the pressure relief hole 1103 along the width direction F2 is the dimension of the fourth projected width S4. The maximum dimension of the overlapping portion of the sound outlet 104 of the pressure relief hole 1103 and the ear hook 200 along the width direction F2 is the dimension of the overlapping portion of the fourth projected width S4 and the first projected width S1. In other words, the ratio of the dimension of the overlapping portion of the fourth projected width S4 and the first projected width S1 to the dimension of the fourth projected width S4 is greater than or equal to 90%. For example, when the first projected width S1 is completely covered by the fourth projected width S4, the ratio between the first projected width S1 and the fourth projected width S4 is greater than or equal to 90%.

[0132] In this way, the ear hook 200 can better form a barrier between the sound inlet end 101 of the second sound inlet hole 1101 and the sound outlet end 104 of the pressure relief hole 1103, which is beneficial to improving the sound reception effect of the headphone 1.

[0133] Optionally, as shown in Figures 5 and 16, the ear hook 200 has a symmetrical plane A1 arranged along the length direction F1 of the ear hook 200. The ear hook 200 includes an elastic element 21 and an elastic covering 22 surrounding the elastic element 21. At one end of the elastic element 21 near the sound-emitting part 100, the ear hook 200 further has a reference plane tangentially arranged to the elastic element 21 and perpendicular to the symmetrical plane A1. This reference plane is referred to as the third reference plane A4. The sound inlet end 101 of the second sound inlet hole 1101 is located on one side of the third reference plane A4, and the sound outlet end 104 of the pressure relief hole 1103 is located on the other side of the third reference plane A4. The elastic element 21 can be, for example, a titanium sheet, and the material of the elastic covering 22 can be, for example, silicone, rubber, elastic resin, polyurethane, polydimethylsiloxane, PVC, TPE, etc., to improve wearing comfort.

[0134] By placing the sound inlet end 101 of the second sound inlet hole 1101 and the sound outlet end 104 of the pressure relief hole 1103 on both sides of the third reference plane A4, the rigid shells on both sides of the extended surface of the elastic member 21 further block the sound inlet end 101 of the second sound inlet hole 1101 and the sound outlet end 104 of the pressure relief hole 1103, thereby further improving the isolation effect between the sound inlet end 101 of the second sound inlet hole 1101 and the sound outlet end 104 of the pressure relief hole 1103, which is beneficial to improving the sound reception effect of the headphone 1.

[0135] Optionally, as shown in Figure 16, in the wearing state, the second sound inlet 1101 is located on the side of the third reference plane A4 away from the helix E17, and the pressure relief hole 1103 is located on the other side of the third reference plane A4 near the helix E17, so that the second sound inlet 1101 can introduce external sound, while the pressure relief hole 1103 has a different orientation from the second sound inlet 1101, and the two are isolated by the rigid shells on both sides of the extended surface of the elastic member 21, which effectively reduces the possibility of mutual interference between the second sound inlet 1101 and the pressure relief hole 1103, and is conducive to improving the sound reception effect of the earphone 1.

[0136] Optionally, as shown in Figure 9, on the outer wall surface of the second housing 11 and the ear hook 200, there is a shortest wall connection line between the edge of the sound inlet end 101 of the second sound inlet hole 1101 and the edge of the sound outlet end 104 of the pressure relief hole 1103. This shortest wall connection line is called the second shortest wall connection line L11. Specifically, the second shortest wall connection line L11 is the shortest arc segment formed by the edge of the sound inlet end 101 of the second sound inlet hole 1101 and the edge of the sound outlet end 104 of the pressure relief hole 1103 along the contour line of the outer wall surface of the second housing 11 and the ear hook 200.

[0137] The arc-chord ratio of the second shortest wall connection line L11 is set to be greater than or equal to 1.7, for example, it can be 1.7, 1.8, 1.9, 2.0, etc., and of course, it can be other values. By setting the arc-chord ratio of the second shortest wall connection line L11 to be greater than or equal to 1.7, the second housing 11 between the edge of the sound inlet 101 of the second sound inlet 1101 and the edge of the sound outlet 104 of the pressure relief hole 1103 is convex. The convex second housing 11 can further isolate the second sound inlet 1101 and the pressure relief hole 1103, so as to effectively reduce the possibility of mutual interference between the second sound inlet 1101 and the pressure relief hole 1103, which is beneficial to improving the sound reception effect of the headphone 1.

[0138] Optionally, as shown in Figure 16, a partition 14 is provided inside the sound-emitting part 100. The second microphone 12 is located on the side of the partition 14 closer to the ear hook 200, and the sound-emitting component 13 is located on the side of the partition 14 away from the ear hook 200. By setting the partition 14 to separate the second microphone 12 and the sound-emitting component 13, the interference caused by the sound-emitting component 13 to the second microphone 12 is effectively reduced, which is beneficial to improving the sound reception effect of the headphone 1.

[0139] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An earphone, characterized in that, The earphone includes a sound-emitting part, a contact part, and an ear hook. The ear hook connects the sound-emitting part and the contact part. In the wearing state, the sound-emitting part and the contact part are clamped on both sides of the auricle, and the sound-emitting part is located in the concha cavity. The ear hook has a symmetrical surface arranged along the length direction of the ear hook. The contact part includes a first housing and a first microphone disposed in the first housing. The first microphone collects a first sound through a first sound inlet on the first housing. The sound-emitting part includes a second housing and a second microphone disposed in the second housing. The second microphone collects a second sound through a second sound inlet on the second housing. The earphone also includes a processing circuit for noise reduction based on the first sound and the second sound. The earphone also has a first reference plane located below and parallel to the symmetrical surface in the wearing state. The distance from the first reference plane to the symmetrical surface is less than or equal to 5 mm. The first sound inlet has a sound inlet end located on the outer wall surface of the first housing. The entire sound inlet end is located on the side of the first reference plane facing the symmetrical surface.

2. The earphone according to claim 1, characterized in that, The sound inlet end of the first sound inlet is at least partially located on the side of the symmetry plane facing the first reference plane, and the maximum straight-line distance from the sound inlet end of the first sound inlet on the side of the symmetry plane facing the first reference plane to the symmetry plane is less than or equal to 4 mm.

3. The earphone according to claim 1, characterized in that, The earphone is configured to support both left-ear and right-ear wearing states. There are two first reference planes symmetrically arranged on both sides of the symmetrical plane. One of the first reference planes is located below the symmetrical plane when the earphone is in the left-ear wearing state, and the other first reference plane is located below the symmetrical plane when the earphone is in the right-ear wearing state. The sound inlet of the first sound hole is located entirely between the two first reference planes.

4. The earphone according to claim 3, characterized in that, There are two first sound inlets, and the sound inlets of the two first sound inlets are located on both sides of the symmetry plane, and both are located between the two first reference planes.

5. The earphone according to claim 4, characterized in that, The sound inlet ends of the two first sound inlets are symmetrically arranged with respect to the symmetrical face.

6. The earphone according to claim 4, characterized in that, The number of first microphones is one. The first microphone collects the first sound through two first sound inlets. The sound inlets of the two first sound inlets are spaced apart from each other and are connected to each other.

7. The earphone according to claim 1, characterized in that, The sound inlet end of the first sound inlet is located on the side of the symmetry plane that is away from the first reference plane.

8. The earphone according to claim 7, characterized in that, The minimum straight-line distance from the sound inlet end of the first sound inlet to the plane of symmetry is greater than or equal to 5 mm.

9. The earphone according to claim 1, characterized in that, The second sound inlet has a sound inlet end located on the outer wall surface of the second housing, and the minimum straight-line distance between the edge of the sound inlet end of the second sound inlet and the edge of the sound inlet end of the first sound inlet is greater than or equal to 15 mm.

10. The earphone according to claim 9, characterized in that, Along the width direction of the ear hook, the sound inlet ends of the first sound inlet hole and the sound inlet ends of the second sound inlet hole are respectively arranged to overlap the ear hook at least partially.

11. The earphone according to claim 10, characterized in that, The first sound inlet has a first axial direction pointing to the outside of the first housing, and the second sound inlet has a second axial direction pointing to the outside of the second housing. The angle between the orthographic projection of the first axial direction on the plane of symmetry and the orthographic projection of the second axial direction on the plane of symmetry is greater than or equal to 115 degrees.

12. The earphone according to claim 1, characterized in that, The first housing includes a main body and a transition portion. The transition portion is disposed on the outer peripheral surface of the main body and connected to the ear hook. The transition portion is tapered in the direction away from the main body so that the ear hook is smoothly connected to the outer surface of the main body. The first microphone is disposed in the transition portion, and the first sound inlet is disposed on the transition portion.

13. The earphone according to claim 1, characterized in that, The processing circuit is further configured to detect wind noise based on the first sound and / or the second sound, and when the detected wind noise is greater than or equal to a preset threshold, control the first microphone to be in working state and control the second microphone to be in non-working state.

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