Earphone

Abstract

The invention relates to the technical field of acoustics, in particular to an earphone, which comprises a sound production part comprising a transducer and a shell for accommodating the transducer, the ear hook comprises a first part and a second part, the first part is hung between the auricle and the head of the user, the second part is connected with the first part, extends towards the front outer side face of the auricle and is connected with the sound production part, the sound production part is fixed to the position near the ear canal but not blocking the ear canal opening, and the sound production part is connected with the sound production part within at least part of the frequency range. And under the condition that the input voltage of the transducer does not exceed 0.6 V, the maximum sound pressure provided by the sound production part to the ear canal is not less than 75dB.

Description

A headset

[0001] Cross-references

[0002] This application claims priority to Chinese application No. 202211336918.4 filed on October 28, 2022, application No. 202223239628.6 filed on December 1, 2022, and PCT application No. PCT / CN2022 / 144339 filed on December 30, 2022, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of acoustic technology, and in particular to a headset. Background Art

[0004] With the development of acoustic output technology, acoustic output devices (e.g., headphones) have been widely used in people's daily lives. They can be used in conjunction with electronic devices such as mobile phones and computers to provide users with an auditory feast. According to the way users wear them, acoustic devices can generally be divided into head-mounted, ear-hook, and in-ear types. The output performance of acoustic devices has a great impact on the user experience.

[0005] Therefore, it is necessary to provide an earphone to improve the output performance of the acoustic output device.

[0006] Summary of the Invention

[0007] One of the embodiments of the present specification provides an earphone, comprising: a sound-emitting part, including a transducer and a shell accommodating the transducer; an ear hook, the ear hook comprising a first part and a second part, the first part being hung between the user's auricle and head, the second part being connected to the first part and extending to the front and outer side of the auricle and connected to the sound-emitting part, so as to fix the sound-emitting part at a position near the ear canal but not blocking the ear canal opening, and within at least part of the frequency range, when the input voltage of the transducer does not exceed 0.6V, the maximum sound pressure that the sound-emitting part can provide into the ear canal is not less than 75dB.

[0008] One of the embodiments of the present specification provides an earphone, comprising: a sound-emitting portion, comprising a transducer and a shell accommodating the transducer; an ear hook, wherein the ear hook comprises a first part and a second part, wherein the first part is hung between the auricle and the head of the user, and the second part is connected to the first part and extends to the front and outer side of the auricle and is connected to the sound-emitting portion, so as to fix the sound-emitting portion at a position near the ear canal but not blocking the ear canal opening. Within at least part of the frequency range, when the input current of the transducer does not exceed 35.3 mA, the maximum sound pressure that the sound-emitting portion can provide into the ear canal is not less than 75 dB.

[0009] One of the embodiments of the present specification provides an earphone, comprising: a sound-emitting portion, comprising a transducer and a shell accommodating the transducer; an ear hook, wherein the ear hook comprises a first part and a second part, wherein the first part is hung between the auricle and the head of the user, and the second part is connected to the first part and extends to the front and outer side of the auricle and is connected to the sound-emitting portion, so as to fix the sound-emitting portion at a position near the ear canal but not blocking the ear canal opening. Within at least part of the frequency range, when the input power of the transducer does not exceed 21.1 mW, the maximum sound pressure that the sound-emitting portion can provide into the ear canal is not less than 75 dB.

[0010] One of the embodiments of the present specification provides an earphone, comprising: a sound-emitting part, including a transducer and a shell accommodating the transducer; an ear hook, the ear hook comprising a first part and a second part, the first part being hung between the user's auricle and head, the second part being connected to the first part and extending toward the front and outer side of the auricle and connected to the sound-emitting part, so as to fix the sound-emitting part at a position near the ear canal but not blocking the ear canal opening, and the sound-emitting efficiency of the sound-emitting part being not less than 100 dB / V within at least part of the frequency range, and the sound-emitting efficiency of the sound-emitting part being the ratio of the sound pressure provided by the sound-emitting part into the ear canal to the input voltage of the transducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present application will be further described in the form of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting, and in these embodiments, like numbers represent like structures, wherein:

[0012] FIG1 is a schematic diagram of an exemplary ear according to some embodiments of the present specification;

[0013] FIG2 is a schematic diagram of an exemplary wearing method of an earphone according to some embodiments of this specification;

[0014] FIG3A is a schematic diagram of an exemplary wearing method of an earphone according to some other embodiments of this specification;

[0015] FIG3B is a schematic diagram of the structure of an earphone in a non-wearing state according to some embodiments of this specification;

[0016] FIG4 is a schematic diagram of an exemplary wearing method of an earphone according to yet other embodiments of this specification;

[0017] FIG5A is a schematic diagram of an acoustic model formed by headphones according to some embodiments of this specification;

[0018] FIG5B is a schematic diagram of an acoustic model formed by headphones according to some other embodiments of this specification;

[0019] FIG6 is a sound pressure level curve in the ear canal when the ear is worn in a manner in which the sound-emitting portion at least partially extends into the concha cavity according to some embodiments of this specification;

[0020] FIG7 is an input voltage-frequency curve corresponding to FIG6;

[0021] FIG8 is an input power-frequency diagram corresponding to FIG6;

[0022] FIG9 is a graph showing the sound production efficiency versus frequency corresponding to FIG6 ;

[0023] FIG10 is a schematic structural diagram of an earphone in a non-wearing state according to yet another embodiment of the present specification;

[0024] FIG11 is a schematic diagram of exemplary wearing of headphones according to still other embodiments of this specification. DETAILED DESCRIPTION

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are merely examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structure or operation.

[0026] FIG1 is a schematic diagram of an exemplary ear according to some embodiments of this specification. Referring to FIG1 , the ear 100 may include an external auditory canal 101, a cavity concha 102, a cymba concha 103, a triangular fossa 104, an antihelix 105, a scaphoid 106, a helix 107, an earlobe 108, a crus helix 109, an outer contour 1013, and an inner contour 1014. It should be noted that, for ease of description, in the embodiments of this specification, the crus superior to the antihelix 1011, the crus inferior to the antihelix 1012, and the antihelix 105 are collectively referred to as the antihelix region. In some embodiments, one or more portions of the ear 100 can be used to support an acoustic device, thereby achieving stable wearing of the acoustic device. In some embodiments, portions such as the external auditory canal 101, the cavity concha 102, the cymba concha 103, and the triangular fossa 104 have a certain depth and volume in three-dimensional space, which can be used to meet the wearing requirements of the acoustic device. For example, an acoustic device (e.g., an in-ear headphone) can be worn in the external auditory canal 101. In some embodiments, the wearing of the acoustic device can be achieved with the help of other parts of the ear 100 other than the external auditory canal 101. For example, the wearing of the acoustic device can be achieved with the help of parts such as the cymba concha 103, the triangular fossa 104, the antihelix 105, the scaphoid 106, or the helix 107, or a combination thereof. In some embodiments, in order to improve the comfort and reliability of the acoustic device in wearing, parts such as the earlobe 108 of the user can also be further used. By using other parts of the ear 100 other than the external auditory canal 101 to achieve the wearing of the acoustic device and the transmission of sound, the external auditory canal 101 of the user can be "liberated". When the user wears the acoustic device (headphones), the acoustic device will not block the external auditory canal 101 of the user. The user can receive both the sound from the acoustic device and the sound from the environment (for example, horns, car bells, surrounding human voices, traffic control sounds, etc.), thereby reducing the probability of traffic accidents. In some embodiments, the acoustic device can be designed to be compatible with the ear 100 according to the structure of the ear 100, so that the sound-producing part of the acoustic device can be worn at different positions on the ear. For example, when the acoustic device is an earphone, the earphone can include a suspension structure (e.g., an ear hook) and a sound-producing part. The sound-producing part and the suspension structure are physically connected. The suspension structure can be compatible with the shape of the auricle to place the entire or partial structure of the ear sound-producing part in front of the crus helix 109 (e.g., area J surrounded by dotted lines in FIG1 ). For another example, when the user wears the earphone, the entire or partial structure of the sound-producing part can contact the upper part of the external auditory canal 101 (e.g., the location of one or more parts such as the crus helix 109, the cymba concha 103, the triangular fossa 104, the antihelix 105, the scaphoid 106, and the helix 107).For another example, when a user wears headphones, the entire or partial structure of the sound-producing part may be located in a cavity formed by one or more parts of the ear (for example, the cavum concha 102, the bacula concha 103, the fossa triangularis 104, etc.) (for example, the area M1 surrounded by dotted lines in Figure 1, which at least includes the bacula concha 103 and the fossa triangularis 104, and the area M2 which at least includes the cavum concha 102).

[0027] Different users may have individual differences, resulting in different shapes, sizes and other dimensional differences in the ears. For the sake of ease of description and understanding, unless otherwise specified, this manual will mainly use an ear model with a "standard" shape and size as a reference to further describe how the acoustic device in different embodiments is worn on the ear model. For example, a simulator containing a head and its (left and right) ears made based on ANSI: S3.36, S3.25 and IEC: 60318-7 standards, such as GRAS KEMAR, HEAD Acoustics, B&K 4128 series or B&K 5128 series, can be used as a reference for wearing an acoustic device, thereby presenting a scenario in which most users normally wear the acoustic device. Taking GRAS KEMAR as an example, the ear simulator can be any one of GRAS 45AC, GRAS 45BC, GRAS45CC or GRAS 43AG. Taking HEAD Acoustics as an example, the ear simulator can be any one of HMS II.3, HMS II.3LN or HMS II.3LN HEC. It should be noted that the data range measured in the embodiments of this specification is measured on the basis of GRAS 45BC KEMAR, but it should be understood that there may be differences between different head models and ear models, and when using other models, the relevant data range may fluctuate by ±10%. The projection of the auricle in the sagittal plane refers to the projection of the edge of the auricle in the sagittal plane. The edge of the auricle is composed of at least the outer contour of the helix, the earlobe contour, the tragus contour, the intertragus notch, the antitragus cusp, the annular tragus notch, etc. Therefore, in this application, descriptions such as "worn by the user", "in a wearing state" and "in a wearing state" may refer to the acoustic device described in this application being worn on the ear of the aforementioned simulator. Of course, taking into account the individual differences among different users, the structure, shape, size, thickness, etc. of one or more parts of the ear 100 can be differently designed according to ears of different shapes and sizes. These differentiated designs can be manifested as the characteristic parameters of one or more parts in the acoustic device (for example, the sound-emitting part, ear hook, etc. mentioned below) can have different ranges of values ​​to adapt to different ears.

[0028] It should be noted that in the fields of medicine and anatomy, three basic cross-sectional planes of the human body can be defined: the sagittal plane, the coronal plane, and the horizontal plane, as well as three basic axes: the sagittal axis, the coronal axis, and the vertical axis. The sagittal plane refers to a cross-sectional plane perpendicular to the ground along the front-to-back direction of the body, which divides the human body into left and right parts; the coronal plane refers to a cross-sectional plane perpendicular to the ground along the left-to-right direction of the body, which divides the human body into front and back parts; the horizontal plane refers to a cross-sectional plane parallel to the ground along the vertical direction of the body, which divides the human body into upper and lower parts. Accordingly, the sagittal axis refers to an axis along the front-to-back direction of the body and perpendicular to the coronal plane, the coronal axis refers to an axis along the left-to-right direction of the body and perpendicular to the sagittal plane, and the vertical axis refers to an axis along the vertical direction of the body and perpendicular to the horizontal plane. Furthermore, the anterior side of the ear described in this application refers to the side of the ear facing the human face along the sagittal axis. When the ear of the simulator is observed along the direction of the human coronal axis, a front profile diagram of the ear as shown in FIG1 can be obtained.

[0029] The description of the ear portion 100 is for illustrative purposes only and is not intended to limit the scope of this application. A person skilled in the art can make various changes and modifications based on the description of this application. For example, a portion of the structure of the acoustic device can shield part or all of the external auditory canal 101. Such changes and modifications are still within the scope of protection of this application.

[0030] Figure 2 is an exemplary wearing diagram of the earphones shown in some embodiments of this specification. As shown in Figure 2, the earphone 10 may include a sound-emitting portion 11 and a suspension structure 12. In some embodiments, the earphone 10 can wear the sound-emitting portion 11 on the user's body (for example, the head, neck or upper torso of the human body) through the suspension structure 12. In some embodiments, the suspension structure 12 can be an ear hook, and the sound-emitting portion 11 is connected to one end of the ear hook, and the ear hook can be set to a shape that matches the user's ear. For example, the ear hook can be an arc-shaped structure. In some embodiments, the suspension structure 12 can also be a clamping structure that matches the user's auricle so that the suspension structure 12 can be clamped at the user's auricle. In some embodiments, the suspension structure 12 can include but is not limited to ear hooks, elastic bands, etc., so that the earphone 10 can be better hung on the user to prevent the user from falling during use.

[0031] In some embodiments, the sound-emitting portion 11 can be worn on the user's body, and a transducer can be provided within the sound-emitting portion 11 to generate sound for input into the user's ear 100. In some embodiments, the earphones 10 can be combined with products such as glasses, headphones, head-mounted displays, and AR / VR helmets. In such cases, the sound-emitting portion 11 can be worn near the user's ear 100 by hanging or clamping. In some embodiments, the sound-emitting portion 11 can be annular, elliptical, polygonal (regular or irregular), U-shaped, V-shaped, or semicircular, so that the sound-emitting portion 11 can be directly attached to the user's ear 100.

[0032] In some embodiments, the sound-emitting portion 11 and the suspension structure 12 are detachable structures. The sound-emitting portion 11 and the suspension structure 12 can be connected by means of snap-fitting, welding, gluing, threading, or screws. Alternatively, the sound-emitting portion 11 and the suspension structure 12 can be connected via a connecting structure (such as an adapter housing). In this design, the sound-emitting portion 11 can be separated from the suspension structure 12 or the connecting structure, and the sound-emitting portion 11 can be measured to obtain data such as its size or volume.

[0033] In some embodiments, the shell of the sound-emitting portion 11 may be integrally formed with the suspension structure 12. Since the suspension structure 12 is used to allow the sound-emitting portion 11 to be worn by the user, the suspension structure 12 and the inner side of the shell of the sound-emitting portion 11 (such as the inner side IS in FIG3B ) are not in the same plane. Therefore, a plane where the inner side of the shell of the sound-emitting portion 11 (such as the inner side IS in FIG3B ) is located and cuts through the integrally formed structure can be used as one separation position between the sound-emitting portion 11 and the suspension structure 12, and a plane where the upper side surface of the shell of the sound-emitting portion 11 (such as the upper side surface US in FIG3B ) is located and cuts through the integrally formed structure can be used as another separation position between the sound-emitting portion 11 and the suspension structure 12. Based on the aforementioned two separation positions, the sound-emitting portion 11 and the suspension structure 12 can be distinguished for further measurement and other work.

[0034] 1 and 2 , in some embodiments, when the user wears the earphone 10, at least part of the sound-emitting portion 11 may be located in the area J in front of the tragus of the user's ear 100 shown in FIG1 or the anterior and lateral surface areas M1 and M2 of the auricle. The following will provide an exemplary description in combination with different wearing positions (11A, 11B, and 11C) of the sound-emitting portion 11. It should be noted that the anterior and lateral surface of the auricle mentioned in the embodiments of this specification refers to the side of the auricle away from the head along the coronal axis, and correspondingly, the posterior and medial surface of the auricle refers to the side of the auricle facing the human head along the coronal axis. In some embodiments, the sound-emitting portion 11A is located on the side of the user's ear 100 facing the human facial area along the sagittal axis, that is, the sound-emitting portion 11A is located in the human facial area J on the front side of the ear 100. Furthermore, a transducer is provided inside the shell of the sound-emitting portion 11A, and at least one sound outlet hole (not shown in FIG. 2 ) may be provided on the shell of the sound-emitting portion. The sound outlet hole may be located on the side wall of the shell of the sound-emitting portion facing or close to the user's external auditory canal 101, and the transducer may output sound to the user's external auditory canal 101 through the sound outlet hole. In some embodiments, the transducer may include a diaphragm, and the chamber inside the shell of the sound-emitting portion 11 is divided into at least a front cavity and a rear cavity by the diaphragm. The sound outlet hole is acoustically coupled with the front cavity, and the vibration of the diaphragm drives the air in the front cavity to vibrate to produce air-conducted sound, and the air-conducted sound produced in the front cavity is transmitted to the outside through the sound outlet hole. In some embodiments, the shell of the sound-emitting portion 11 may also include one or more pressure relief holes, and the pressure relief holes may be located on the side wall of the shell adjacent to or opposite to the side wall where the sound outlet hole is located. The pressure relief holes are acoustically coupled with the rear cavity, and the vibration of the diaphragm also drives the air in the rear cavity to vibrate to produce air-conducted sound, and the air-conducted sound produced in the rear cavity is transmitted to the outside through the pressure relief holes. For example, in some embodiments, the transducer in the sound-emitting portion 11A can output sounds with a phase difference (e.g., opposite phases) through the sound outlet and the pressure relief holes. The sound outlet can be located on the side wall of the housing of the sound-emitting portion 11A facing the user's external auditory canal 101, and the pressure relief hole can be located on the side of the housing of the sound-emitting portion 11 facing away from the user's external auditory canal 101. In this case, the housing can act as a baffle, increasing the sound path difference between the sound outlet and the pressure relief holes and the external auditory canal 101, thereby increasing the sound intensity at the external auditory canal 101 while reducing the volume of far-field sound leakage. In some embodiments, the sound-emitting portion 11 can have a long axis direction Y and a short axis direction Z that are perpendicular to the thickness direction X and orthogonal to each other. Among them, the major axis direction Y can be defined as the direction with the largest extension dimension in the shape of the two-dimensional projection surface of the sound-emitting part 11 (for example, the projection of the sound-emitting part 11 on the plane where its outer surface is located, or the projection on the sagittal plane) (for example, when the projection shape is a rectangle or an approximate rectangle, the major axis direction is the length direction of the rectangle or the approximate rectangle), and the minor axis direction Z can be defined as the direction perpendicular to the major axis direction Y in the shape of the projection of the sound-emitting part 11 on the sagittal plane (for example, when the projection shape is a rectangle or an approximate rectangle, the minor axis direction is the width direction of the rectangle or the approximate rectangle).The thickness direction X can be defined as a direction perpendicular to the two-dimensional projection plane, for example, consistent with the direction of the coronal axis, both pointing in the left and right directions of the body. In some embodiments, when the sound-emitting portion 11 is in a tilted state when worn, the major axis direction Y and the minor axis direction Z are still parallel or approximately parallel to the sagittal plane. The major axis direction Y can have a certain angle with the direction of the sagittal axis, that is, the major axis direction Y is also tilted accordingly, and the minor axis direction Z can have a certain angle with the direction of the vertical axis, that is, the minor axis direction Z is also tilted, as shown in the wearing condition of the sound-emitting portion 11B in Figure 2. In some embodiments, the entire or partial structure of the sound-emitting portion 11B can extend into the cavum concha, that is, the projection of the sound-emitting portion 11B on the sagittal plane overlaps with the projection of the cavum concha on the sagittal plane. For specific details about the sound-emitting portion 11B, please refer to the contents elsewhere in this specification, for example, Figure 3A and its corresponding specification contents. In some embodiments, the sound-emitting portion 11 may also be in a horizontal state or an approximately horizontal state when worn. As shown in the sound-emitting portion 11C of FIG2 , the long axis direction Y may be consistent or approximately consistent with the direction of the sagittal axis, both pointing to the front-to-back direction of the body, and the short axis direction Z may be consistent or approximately consistent with the direction of the vertical axis, both pointing to the up-down direction of the body. It should be noted that, when worn, the sound-emitting portion 11C being in an approximately horizontal state may mean that the angle between the long axis direction Y of the sound-emitting portion 11C shown in FIG2 and the sagittal axis is within a specific range (for example, not more than 20°). In addition, the wearing position of the sound-emitting portion 11 is not limited to the sound-emitting portion 11A, the sound-emitting portion 11B and the sound-emitting portion 11C shown in FIG2 , and it only needs to satisfy the area J, area M1 or area M2 shown in FIG1 . For example, the entire or partial structure of the sound-emitting portion 11 may be located in the area J surrounded by the dotted line in FIG1 . For another example, the entirety or a portion of the sound-producing part may contact one or more parts of the ear 100, such as the crus helix 109, the cymba concha 103, the triangular fossa 104, the antihelix 105, the scaphoid 106, and the helix 107. For another example, the entirety or a portion of the sound-producing part 11 may be located within a cavity formed by one or more parts of the ear 100 (e.g., the cavum concha 102, the cymba concha 103, the triangular fossa 104, etc.) (e.g., the region M1 enclosed by the dotted line in FIG. 1 , which includes at least the cymba concha 103 and the triangular fossa 104, and the region M2 which includes at least the cavum concha 102).

[0035] To improve the stability of the earphone 10 when worn, the earphone 10 may employ any one or a combination of the following approaches. First, at least a portion of the suspension structure 12 may be configured as a contoured structure that conforms to at least one of the posterior medial surface of the auricle or the head, thereby increasing the contact area between the suspension structure 12 and the ear and / or head, thereby increasing the resistance to the acoustic device falling off the ear. Second, at least a portion of the suspension structure 12 may be configured as an elastic structure, allowing it to deform a certain amount when worn, thereby increasing the positive pressure exerted by the suspension structure 12 on the ear and / or head, thereby increasing the resistance to the earphone 10 falling off the ear. Third, at least a portion of the suspension structure 12 may be configured to abut against the ear and / or head when worn, generating a reaction force that presses against the ear, causing the sound-producing portion 11 to press against the anterior lateral surface of the auricle (e.g., regions M1 and M2 shown in FIG. 1 ), thereby increasing the resistance to the earphone 10 falling off the ear. Fourth, the sound-producing portion 11 and the suspension structure 12 are configured to clamp the antihelix and the cavum concha from both the anterior and posterior medial sides of the auricle when worn, thereby increasing resistance to the earphone 10 falling off the ear. Fifth, the sound-producing portion 11 or the structure connected thereto is configured to at least partially extend into cavities such as the cavum concha 102, the cymba concha 103, the triangular fossa 104, and the scaphoid 106, thereby increasing resistance to the earphone 10 falling off the ear.

[0036] For example, referring to FIG3A , when worn, the end FE (also referred to as the free end) of the sound-emitting portion 11 can extend into the cavum concha. Optionally, the sound-emitting portion 11 and the suspension structure 12 can be configured to jointly clamp the ear region corresponding to the cavum concha from both the front and rear sides of the ear region, thereby increasing resistance to the earphone 10 falling off the ear and thereby improving the stability of the earphone 10 when worn. For example, the end FE of the sound-emitting portion is pressed against the cavum concha in the thickness direction X. For another example, the end FE abuts the cavum concha in the major axis direction Y and / or the minor axis direction Z (e.g., abuts against the inner wall of the cavum concha opposite the end FE). It should be noted that the end FE of the sound-emitting portion 11 refers to the end portion of the sound-emitting portion 11 located opposite the fixed end connected to the suspension structure 12, also referred to as the free end. The sound-emitting portion 11 can have a regular or irregular structure. An exemplary illustration is provided here to further illustrate the end FE of the sound-emitting portion 11. For example, when the sound-emitting portion 11 is a rectangular parallelepiped structure, the end wall surface of the sound-emitting portion 11 is a plane. In this case, the end FE of the sound-emitting portion 11 is the end side wall of the sound-emitting portion 11 opposite the fixed end connected to the suspension structure 12. For another example, when the sound-emitting portion 11 is a sphere, an ellipsoid, or an irregular structure, the end FE of the sound-emitting portion 11 may refer to a specific region away from the fixed end obtained by cutting the sound-emitting portion 11 along the YZ plane (the plane formed by the minor axis direction Z and the thickness direction X). The ratio of the dimension of the specific region along the major axis direction Y to the dimension of the sound-emitting portion along the major axis direction Y may be 0.05 to 0.2.

[0037] By extending the sound-emitting portion 11 at least partially into the concha cavity, the listening volume at the listening position (e.g., at the opening of the ear canal), especially the listening volume of mid- and low-frequency sounds, can be increased, while still maintaining a good far-field sound leakage cancellation effect. For illustrative purposes only, when the entire or partial structure of the sound-emitting portion 11 extends into the concha cavity 102, the sound-emitting portion 11 and the concha cavity 102 form a cavity-like structure (hereinafter referred to as a quasi-cavity). In the embodiments of the specification, the quasi-cavity structure can be understood as a semi-enclosed structure surrounded by the side walls of the sound-emitting portion 11 and the concha cavity 102 structure. This semi-enclosed structure makes the listening position (e.g., at the opening of the ear canal) not completely sealed and isolated from the external environment, but has a leakage structure (e.g., an opening, a gap, a pipe, etc.) that is acoustically connected to the external environment. When the user wears the earphone 10, one or more sound outlet holes may be provided on the side of the shell of the sound-emitting part 11 close to or facing the user's ear canal, and one or more pressure relief holes may be provided on the other side walls of the shell of the sound-emitting part 11 (for example, the side walls away from or facing away from the user's ear canal). The sound outlet holes are acoustically coupled with the front cavity of the earphone 10, and the pressure relief holes are acoustically coupled with the back cavity of the earphone 10. Taking the sound-emitting part 11 including a sound outlet hole and a pressure relief hole as an example, the sound output by the sound outlet hole and the sound output by the pressure relief hole can be approximately regarded as two sound sources, and the sound phases of the two sound sources are opposite. The inner walls corresponding to the sound-emitting part 11 and the cavum concha 102 form a cavity-like structure, wherein the sound source corresponding to the sound outlet hole is located inside the cavity-like structure, and the sound source corresponding to the pressure relief hole is located outside the cavity-like structure, forming the acoustic model shown in Figure 5A.

[0038] 3A and 3B , an ear hook is used as an example of the suspension structure 12 for illustration. In some embodiments, the ear hook may include a first portion 121 and a second portion 122 connected in sequence, wherein the first portion 121 may be hung between the posterior medial side of the user's auricle and the head, and the second portion 122 may extend toward the anterior lateral side of the ear (the side of the ear facing away from the human head along the coronal axis) and connect to the sound-emitting portion, thereby fixing the sound-emitting portion near the user's ear canal but not blocking the ear canal opening. In some embodiments, a sound outlet may be provided on the side wall of the housing facing the auricle, thereby directing the sound generated by the transducer out of the housing and then toward the user's ear canal opening.

[0039] In some embodiments, the sound-emitting portion 11 may include a transducer and a shell 111 for accommodating the transducer. The shell 111 may be connected to an ear hook. The transducer is used to convert electrical signals into corresponding mechanical vibrations to generate sound. In some embodiments, a sound outlet 112 is provided on the side of the shell facing the auricle, and the sound outlet 112 is used to guide the sound generated by the transducer out of the shell 111 and then transmit it to the ear canal, so that the user can hear the sound. In some embodiments, the transducer (for example, a diaphragm) can separate the shell 111 into a front cavity and a rear cavity of the earphone, and the sound outlet 112 can be connected to the front cavity, and guide the sound generated by the front cavity out of the shell 111 and then transmit it to the ear canal. In some embodiments, a portion of the sound guided out through the sound outlet 112 can be transmitted to the ear canal so that the user can hear the sound, and another portion of the sound can be transmitted together with the sound reflected from the ear canal through the gap between the sound-emitting portion 11 and the ear (for example, the portion of the concha cavity not covered by the sound-emitting portion 11) to the outside of the earphone 10 and the ear, thereby forming a first sound leakage in the far field; at the same time, one or more pressure relief holes are generally provided on other sides of the shell 111 (for example, the side away from or facing away from the user's ear canal). The pressure relief hole is farther away from the ear canal than the sound outlet 112, and the sound transmitted from the pressure relief hole generally forms a second sound leakage in the far field. The intensity of the aforementioned first sound leakage is comparable to that of the aforementioned second sound leakage, and the phase of the aforementioned first sound leakage and the phase of the aforementioned second sound leakage are (close to) opposite to each other, so that the two can cancel each other out of phase in the far field, which is beneficial to reducing the sound leakage of the earphone 10 in the far field.

[0040] As shown in Figure 3B, in some embodiments, a sound outlet 112 connected to the front cavity is provided on the inner side IS of the shell 111 to guide the sound generated in the front cavity out of the shell 111 and then transmit it to the ear canal so that the user can hear the sound. One or more pressure relief holes connected to the rear cavity may be provided on other sides of the shell 111 (for example, the upper side US or the lower side LS, etc.) to guide the sound generated in the rear cavity out of the shell 111 and then interfere with the sound output from the sound outlet 112 in the far field. In some embodiments, the pressure relief hole is farther away from the ear canal than the sound outlet 112 to reduce the anti-phase cancellation between the sound output through the pressure relief hole and the sound output through the sound outlet 112 at the listening position.

[0041] By extending the sound-emitting portion 11 at least partially into the concha cavity, the listening volume at the listening position (e.g., at the opening of the ear canal), especially the listening volume of mid- and low-frequency sounds, can be increased, while still maintaining a good far-field sound leakage cancellation effect. For illustrative purposes only, when the entire or partial structure of the sound-emitting portion 11 extends into the concha cavity 102, the sound-emitting portion 11 and the concha cavity 102 form a cavity-like structure (hereinafter referred to as a quasi-cavity). In the embodiments of the specification, the quasi-cavity structure can be understood as a semi-enclosed structure surrounded by the side walls of the sound-emitting portion 11 and the concha cavity 102 structure. This semi-enclosed structure makes the listening position (e.g., at the opening of the ear canal) not completely sealed and isolated from the external environment, but has a leakage structure (e.g., an opening, a gap, a pipe, etc.) that is acoustically connected to the external environment. When the user wears the earphone 10, one or more sound outlet holes may be provided on the side of the housing of the sound-emitting portion 11 close to or facing the user's ear canal, and one or more pressure relief holes may be provided on the other sidewalls of the housing of the sound-emitting portion 11 (for example, the sidewall away from or facing away from the user's ear canal). The sound outlet holes are acoustically coupled to the front cavity of the earphone 10, and the pressure relief holes are acoustically coupled to the back cavity of the earphone 10. Taking the example of the sound-emitting portion 11 including a sound outlet hole and a pressure relief hole, the sound output by the sound outlet hole and the sound output by the pressure relief hole can be approximately regarded as two sound sources, the sound phases of the two sound sources being opposite, and the inner walls corresponding to the sound-emitting portion 11 and the cavum conchae 102 forming a cavity-like structure, wherein the sound source corresponding to the sound outlet hole is located within the cavity-like structure, and the sound source corresponding to the pressure relief hole is located outside the cavity-like structure, forming the acoustic model shown in FIG5A. As shown in FIG5A, the cavity-like structure 402 may include a listening position and at least one sound source 401A. Here, "include" can mean that at least one of the listening position and the sound source 401A is inside the cavity-like structure 402, or it can mean that at least one of the listening position and the sound source 401A is at the inner edge of the cavity-like structure 402. The listening position can be equivalent to the entrance of the ear canal or inside the ear canal, or it can be an acoustic reference point of the ear, such as the ear reference point (ERP), the ear-drum reference point (DRP), etc., or it can be an entrance structure leading to the listener, etc. The sound source 401B is located outside the cavity-like structure 402, and the sound sources 401A and 401B with opposite phases radiate sound to the surrounding space respectively and cause interference and destructive sound waves to achieve a sound leakage cancellation effect. Specifically, since the sound source 401A is wrapped by the cavity-like structure 402, most of the sound radiated by it will reach the listening position by direct radiation or reflection. In contrast, in the absence of the cavity-like structure 402, most of the sound radiated by the sound source 401A will not reach the listening position. Therefore, the arrangement of the cavity structure significantly increases the volume of the sound reaching the listening position.At the same time, only a small portion of the anti-phase sound radiated by anti-phase sound source 401B outside cavity-like structure 402 enters cavity-like structure 402 through leakage structure 403 of cavity-like structure 402. This is equivalent to generating a secondary sound source 401B' at leakage structure 403, whose intensity is significantly lower than that of sound source 401B and also significantly lower than that of sound source 401A. The sound generated by secondary sound source 401B' has a weak anti-phase cancellation effect on sound source 401A within the cavity, significantly increasing the listening volume at the listening position. As for sound leakage, the sound source 401A radiating sound to the outside through the leakage structure 403 of the cavity is equivalent to generating a secondary sound source 401A' at the leakage structure 403. Since almost all the sound radiated by the sound source 401A is output from the leakage structure 403, and the scale of the cavity-like structure 402 is much smaller than the spatial scale of the evaluated sound leakage (at least one order of magnitude different), it can be considered that the intensity of the secondary sound source 401A' is equivalent to that of the sound source 401A, and still maintains a considerable sound leakage reduction effect.

[0042] In a specific application scenario, by extending part or all of the sound-emitting part 11 into the concha cavity, a cavity-like structure that is connected to the outside world is formed between the sound-emitting part 11 and the outline of the concha cavity. Furthermore, by arranging the sound outlet 112 in the shell of the sound-emitting part facing the user's ear canal opening and close to the edge of the concha cavity, the acoustic model shown in Figure 5A can be constructed, so that the user can hear a louder listening volume when wearing headphones. In other words, by specially designing the structure of the sound-emitting part and the wearing method, the sound-emitting part 11 can have a better sound output efficiency. The better sound output efficiency mentioned here can be understood as that even if a smaller input signal is provided to the sound-emitting part 11 (for example, a smaller input voltage or input power is provided to the transducer of the sound-emitting part 11), the sound-emitting part can still provide a sufficiently loud volume to the user, that is, a sound pressure exceeding a specific threshold can be generated in the user's ear canal. For more description of sound output efficiency, please see below.

[0043] In some embodiments, the sound-emitting portion can be worn in a different manner than the one shown in FIG3A, which is inserted into the concha cavity, and can also achieve better sound output efficiency.

[0044] In some embodiments, when the earphones are worn, at least a portion of the sound-emitting portion 11 can cover the user's anti-helix area. In this case, the sound-emitting portion 11 is located above the cavum conchae 102 and the opening of the ear canal, and the opening of the ear canal is open. In some embodiments, the housing of the sound-emitting portion 11 can include at least one sound-emitting hole and a pressure relief hole. The sound-emitting hole is acoustically coupled to the front cavity of the earphone 10, and the pressure relief hole is acoustically coupled to the rear cavity of the earphone 10. The sound output from the sound-emitting hole and the sound output from the pressure relief hole can be approximately considered two sound sources, with the sounds from these two sound sources having opposite phases. When the user wears the earphones, the sound-emitting hole is located on the side wall of the sound-emitting portion 11 facing or near the opening of the ear canal, and the pressure relief hole is located on the side wall of the sound-emitting portion 11 facing away from or away from the opening of the ear canal. In this case, the sound-emitting portion 11 and the user's auricle can form a structure similar to a baffle, wherein the sound source corresponding to the sound-emitting hole is located on one side of the baffle, and the sound source corresponding to the pressure relief hole bypasses the sound-emitting portion 11 and the user's auricle and is located on the other side of the baffle, forming the acoustic model shown in Figure 5B. As shown in Figure 5B, when a baffle is placed between sound sources A1 and A2, in the near field, the sound field of sound source A2 needs to bypass the baffle to interfere with the sound waves of sound source A1 at the listening position, which is equivalent to increasing the sound path from sound source A2 to the listening position. Therefore, assuming that sound sources A1 and A2 have the same amplitude, the amplitude difference between the sound waves of sound sources A1 and A2 at the listening position increases compared to the case where no baffle is placed, thereby reducing the degree of cancellation of the two sounds at the listening position, resulting in an increase in the volume at the listening position. In the far field, since the sound waves generated by sound sources A1 and A2 do not need to bypass the baffle to interfere in a larger spatial range (similar to the case without a baffle), the far-field sound leakage will not be significantly increased compared to the case without a baffle. Therefore, placing a baffle structure around one of the sound sources A1 and A2 can significantly increase the volume at the near-field listening position without significantly increasing the far-field sound leakage volume.

[0045] In a specific application scenario, by at least partially covering the anti-helix area of ​​the user with the sound-emitting portion 11, the user can hear a louder listening volume when wearing the earphones. This approach can also make the sound-emitting portion 11 have better sound output efficiency.

[0046] As mentioned above, the sound waves generated by the transducer propagate through the sound outlet to be transmitted into the external auditory canal. A transducer is a component that can receive electrical signals and convert them into sound signals for output. In some embodiments, the transducer may include a diaphragm, a voice coil, and a magnetic circuit assembly. One end of the voice coil is fixedly connected to the diaphragm, and the other end extends into the magnetic gap formed by the magnetic circuit assembly. By supplying current to the voice coil, the voice coil can be vibrated in the magnetic gap, thereby driving the diaphragm to vibrate and generate sound waves.

[0047] Compared to other headphones (such as in-ear headphones, over-ear headphones, etc.), ambient sound is more likely to enter the user's ear canal, thereby affecting the listening experience of the headphones 10. In this case, the headphones 10 may need to provide a higher volume to ensure a better listening experience. By specially designing the structure and wearing method of the sound-emitting part 11 as described elsewhere in this specification (for example, forming an acoustic model as shown in Figures 5A or 5B), it is possible to ensure sufficient sound pressure in the ear canal even when the input power (or input voltage) of the transducer is low.

[0048] For ease of description, the following description uses the listening position within the ear canal as an example. It should be noted that in other embodiments, the aforementioned ear acoustic reference points, such as the Ear Reference Point (ERP) and Tympanic Drum Reference Point (DRP), or the entrance structure leading to the listener, can also be used. The sound pressure at these locations should also increase or decrease accordingly.

[0049] In some embodiments, the sound pressure in the ear canal described in this specification can be measured in the following manner: using the simulator containing the head and its ears described above as a reference for wearing an acoustic device, a test is performed to obtain the sound pressure provided by the sound-generating part 11 to the ear canal. For example, a device with a playback function (such as a mobile phone, DAP, etc.) can be connected to the earphone 10 and control the earphone 10 to play a sweep frequency signal (such as a sweep frequency signal with a frequency range of 20Hz to 20000Hz). The playback device can generate output signals corresponding to different volume levels. For example, the signal output by the playback device may include multiple volume levels, each volume level corresponding to a different input voltage or input current of the transducer input signal. The output signal of each volume level is used to control the earphone 10 to play the sweep frequency signal, and the sound pressure generated and transmitted to the ear canal by the transducer under different input signal input voltages or input currents is recorded respectively. For example, the volume of the playback device can be divided into 8 volume levels, and the volume levels corresponding to the maximum volume to the minimum volume can be the maximum volume, minus one grid, minus two grids, minus three grids, ..., minus seven grids. It should be noted that, in some other embodiments, the maximum volume and the minimum volume of the playback device may be divided into other number of volume levels, such as 3, 5, 20, etc. In some embodiments, the output signal of the playback device may be a sinusoidal signal.

[0050] The simulator, which includes a head and ear, has a microphone installed in the ear canal. This microphone can be connected to a sound input device (such as a computer sound card or analog-to-digital converter (ADC)). A processing device (such as a computer) further receives the converted level signal from the microphone and records or processes it.

[0051] In some embodiments, the sound pressure in the ear canal can also be measured by obtaining a simulated head model or ear model not specifically designed for acoustic measurement, sealing the end of the model's ear canal to resemble a human ear. An acoustic test microphone is placed in the model's ear canal to collect the converted level signal, replacing the aforementioned head and ear simulator to measure the sound pressure in the ear canal.

[0052] The human ear's auditory frequency range is roughly between 20Hz and 20,000Hz, but the human ear's hearing is not sensitive to some frequency bands, such as low frequencies (such as below 300Hz) or high frequencies (such as above 5,000Hz). In some embodiments, by specially designing the structure and wearing method of the sound-emitting part 11, the sound-emitting part 11 can have better sound output efficiency within a specific frequency range, that is, when the input voltage or input power of the input signal of the transducer is constant, the sound-emitting part 11 can provide a sufficiently large volume to the user within a specific frequency range, so that a sound pressure exceeding a specific threshold can be generated in the user's ear canal. For example, under the condition that the transducer input voltage is constant, increasing the sound pressure provided by the sound-emitting part 11 to the ear canal within the range of 300Hz to 5,000Hz can make the earphone 10 have a better listening effect. In some embodiments, in order to prioritize the listening effect within the more sensitive range of human hearing, under the condition of a certain transducer input voltage, the sound pressure provided by the sound-emitting part 11 to the ear canal can be increased in the range of 600Hz to 2000Hz, so that the earphone 10 can have a better listening effect.

[0053] FIG6 shows a sound pressure level (SPL) curve in the ear canal when the earphone 10 is worn with the sound-emitting portion 11 at least partially extending into the concha cavity. The horizontal axis represents frequency in Hertz (Hz), and the vertical axis represents sound pressure in decibels (dB). The solid line 610 in FIG6 represents the SPL curve in the ear canal when the playback device is outputting an output signal at the maximum volume level. The other line segments represent the SPL curves in the ear canal when the playback device is operating at lower volume levels (negative one to negative seven scales).

[0054] Figure 7 is a graph of input voltage versus frequency corresponding to Figure 6 , where the horizontal axis represents frequency in Hertz (Hz) and the vertical axis represents the input voltage of the transducer input signal in volts (V). It should be noted that since the transducer input signal is a sinusoidal signal, the input voltage of the input signal can also be understood as the effective voltage value (Vrms) corresponding to the sinusoidal signal. In Figure 7 , solid line 710 represents the input voltage of the headphone 10 transducer at different frequencies when the playback device outputs an output signal at maximum volume level. The other solid lines represent the input voltage of the transducer when playing signals of different frequencies at lower volume levels (negative one to negative seven). For ease of understanding, the input voltage of the transducer can be obtained by measuring the voltage at the transducer terminals (e.g., the connection between the voice coil and the external wire) when the transducer plays a swept frequency signal using a tester. For example, a wire can be extended from the solder joint of the transducer terminal, connected to a filter, and then connected to a tester. The voltage data from the tester can be obtained using a processing device (e.g., a computer).

[0055] In some embodiments, the wires between the transducer and the battery or drive circuit can be cut and extended out of the housing of the sound-generating unit 11. The extended wires can then be connected to the output of an acoustic test instrument. During testing, the input voltage of the input signal can be determined by setting the input signal of the acoustic test instrument. Different input voltages can be set according to actual testing requirements. In some embodiments, the acoustic test instrument can selectively output a sine wave corresponding to a specific voltage or current.

[0056] By adopting a design in which the sound-emitting portion 11 partially extends into the concha cavity, forming a cavity-like structure as shown in FIG5A , the sound generated by the sound outlet hole 112 in the cavity-like body (i.e., the sound source 401A in FIG5A ) can be directed more toward the ear canal, while the sound generated by the pressure relief hole outside the cavity-like body (i.e., the sound source 401B in 5A ) is less able to enter the cavity-like body for cancellation, thereby enabling the sound-emitting portion 11 to provide a greater sound pressure into the ear canal. In some embodiments, as can be seen from FIG6 and FIG7 , within at least a portion of the frequency range, when the input voltage of the transducer does not exceed 0.6V, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is not less than 75dB.

[0057] For example, taking a frequency of 1000 Hz as an example, as can be seen from the solid line 610 in FIG. 6 , at a frequency of 1000 Hz, the maximum sound pressure provided by the sound-emitting portion 11 into the ear canal is 79 dB. In conjunction with FIG. 7 , the transducer input voltage at a frequency of 1000 Hz is 0.6 V. In other words, at a frequency of 1000 Hz, using a design in which the sound-emitting portion 11 partially extends into the concha cavity, and provided the transducer input voltage does not exceed 0.6 V, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is no less than 75 dB.

[0058] Furthermore, combining Figures 6 and 7 shows that at a frequency of 500 Hz, the maximum sound pressure provided by the sound-emitting portion 11 into the ear canal is 80 dB, and the transducer input voltage is 0.58 V. In other words, at a frequency of 500 Hz, using a design in which the sound-emitting portion 11 partially extends into the cavum concha, and the transducer input voltage does not exceed 0.59 V, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is no less than 80 dB. Similarly, based on Figures 6 and 7, it can also be determined that at a frequency of 800 Hz, using a design in which the sound-emitting portion 11 partially extends into the cavum concha, and the transducer input voltage does not exceed 0.58 V, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is no less than 79 dB. At a frequency of 2000 Hz, using a design in which the sound-emitting portion 11 partially extends into the cavum concha, and the transducer input voltage does not exceed 0.55 V, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is no less than 83 dB.

[0059] Continuing to refer to Figures 6 and 7, it can be seen from the figures that in the frequency range of 300Hz to 4000Hz, when the design of partially extending the sound-emitting part 11 into the concha cavity is adopted, and the transducer input voltage does not exceed 0.6V, the maximum sound pressure that the sound-emitting part 11 can provide to the ear canal is not less than 79dB; in the frequency range of 700Hz to 1500Hz, when the design of partially extending the sound-emitting part 11 into the concha cavity is adopted, and the transducer input voltage does not exceed 0.6V, the maximum sound pressure that the sound-emitting part 11 can provide to the ear canal is not less than 75dB; in the frequency range of 2500Hz to 4000Hz, when the design of partially extending the sound-emitting part 11 into the concha cavity is adopted, and the transducer input voltage does not exceed 0.55V, the maximum sound pressure that the sound-emitting part 11 can provide to the ear canal is not less than 75dB.

[0060] It can be seen that when the sound-emitting portion 11 is worn in a manner in which at least part of it extends into the concha cavity, within at least part of the frequency range (e.g., 300 Hz to 4000 Hz), when the input voltage of the transducer does not exceed 0.6 V, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is not less than 75 dB. In some embodiments, by optimizing the volume, mass, and dimensions of the sound-emitting portion 11 and the battery compartment 13, the sound output efficiency of the sound-emitting portion 11 can be further improved, so that when the input voltage of the transducer does not exceed 0.6 V, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is not less than 78 dB. For a description of the volume, mass, and dimensions of the sound-emitting portion 11 and the battery compartment 13, please refer to the relevant descriptions of Figures 10 and 11 below.

[0061] In some embodiments, depending on different power supply conditions (such as different volume levels of the playback device, different models of headphones 10, different battery specifications, etc.), the input voltage of the transducer does not exceed 0.4V, and in at least part of the frequency range (such as 100Hz to 3000Hz), the design of partially extending the sound-emitting part 11 into the concha cavity is adopted, and the maximum sound pressure that the sound-emitting part 11 can provide into the ear canal is not less than 72dB.

[0062] Referring again to Figures 6 and 7, when the frequency is 400Hz, when the volume level of the playback device is minus one grid, the transducer input voltage is 0.39V, and the maximum sound pressure provided by the sound-emitting part 11 to the ear canal is 76dB. When the frequency is 1500Hz, when the volume level of the playback device is minus two grids, the transducer input voltage is 0.3V, and the maximum sound pressure provided by the sound-emitting part 11 to the ear canal is 78dB. When the frequency is in the range of 200Hz to 3000Hz, the maximum transducer input voltage does not exceed 0.3V, and the sound pressure provided by the sound-emitting part 11 to the ear canal is not less than 74dB. It can be seen that when the transducer input voltage is reduced, the sound-emitting part 11 can still provide a large sound pressure to the ear canal, ensuring a good listening effect of the earphone 10.

[0063] In some embodiments, for the wearing arrangement shown in FIG4 , in which the sound-emitting portion 11 is at least partially located at the antihelix, the design in which the sound-emitting portion 11 is at least partially located at the antihelix can make the antihelix and the shell of the sound-emitting portion 11 form a baffle equivalent to that shown in FIG5B , thereby reducing the sound transmitted from the pressure relief hole to the ear canal (such as sound source A2 in FIG5B ). As a result, the degree of sound cancellation in the ear canal is reduced, and the sound heard by the user (such as sound source A1 in FIG5B ) is louder, that is, the sound-emitting portion 11 can provide a greater sound pressure into the ear canal. In some embodiments, within at least a portion of the frequency range, when the input voltage of the transducer does not exceed 0.6V, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is not less than 70dB.

[0064] For example, at a frequency of 1000 Hz, the design in which the sound-emitting portion 11 is at least partially located at the anti-helix is ​​adopted. When the sound-emitting portion 11 is worn at the anti-helix, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is no less than 72 dB, and the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is no less than 70 dB, when the input voltage of the transducer does not exceed 0.6 V. In the frequency range of 300 Hz to 4000 Hz, the design in which the sound-emitting portion 11 is at least partially located at the anti-helix is ​​adopted. When the input voltage of the transducer does not exceed 0.6 V, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is no less than 73 dB. In the frequency range of 700 Hz to 1500 Hz, the design in which the sound-emitting portion 11 is at least partially located at the anti-helix is ​​adopted. When the input voltage of the transducer does not exceed 0.6 V, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is no less than 71 dB.

[0065] When the input voltage of the transducer decreases, the sound pressure that the sound-emitting portion 11 can provide to the ear canal also decreases. By optimizing the volume, mass, and dimensions of the sound-emitting portion 11 and the battery compartment 13, it is possible to produce an appropriate sound pressure in the ear canal even when the input voltage of the transducer is reduced.

[0066] In some embodiments, the relationship between the input power of the transducer and the sound pressure in the ear canal can also reflect the sound output efficiency of the sound-emitting portion 11. For example, better sound output efficiency can be understood as that even if a smaller input power is provided to the transducer, the sound-emitting portion 11 can still provide a sufficiently large volume to the user, that is, a sound pressure exceeding a specific threshold can be generated in the user's ear canal. Figure 8 is an input power-frequency graph corresponding to Figure 6. The solid line 810 in Figure 8 represents the sound pressure level curve of the earphone 10 when the playback device outputs an output signal at the maximum volume level, and the other solid lines represent the sound pressure level curves of the earphone 10 when the playback device outputs a smaller volume level (negative one grid to negative seven grids). In some embodiments, the input power can be determined based on the input voltage and / or input current at the transducer terminal.

[0067] 6 and 8 , it can be seen that, within at least part of the frequency range, when the input power of the transducer does not exceed 21.1 mW, the design of partially extending the sound-emitting part 11 into the concha cavity can enable the sound-emitting part 11 to provide a maximum sound pressure into the ear canal of not less than 75 dB.

[0068] For example, taking a frequency of 1000 Hz as an example, FIG6 shows that at a frequency of 1000 Hz, the maximum sound pressure provided by the sound-emitting portion 11 into the ear canal is 79 dB. Combined with FIG8 , the input power of the transducer at a frequency of 1000 Hz is 21.1 mW. In other words, at a frequency of 1000 Hz, using a design in which the sound-emitting portion 11 partially extends into the concha cavity, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is no less than 75 dB, provided the input power of the transducer does not exceed 21.1 mW.

[0069] Furthermore, combining Figures 6 and 8 shows that at a frequency of 500 Hz, the maximum sound pressure provided by the sound-emitting portion 11 into the ear canal is 80 dB, and the transducer input power is 19.8 mW. In other words, at a frequency of 500 Hz, and with a transducer input power not exceeding 19.8 mW, using a design in which the sound-emitting portion 11 partially extends into the cavum concha, the maximum sound pressure provided by the sound-emitting portion 11 into the ear canal is no less than 80 dB. Based on Figures 6 and 8 , it can also be determined that at a frequency of 800 Hz, and with a transducer input power not exceeding 19.8 mW, using a design in which the sound-emitting portion 11 partially extends into the cavum concha, the maximum sound pressure provided by the sound-emitting portion 11 into the ear canal is no less than 79 dB; and at a frequency of 2000 Hz, and with a transducer input power not exceeding 17.8 mW, the maximum sound pressure provided by the sound-emitting portion 11 into the ear canal is no less than 83 dB.

[0070] Continuing to refer to Figures 6 and 8, it can be seen that in the frequency range of 300Hz to 4000Hz, when the design of partially extending the sound-emitting part 11 into the concha cavity is adopted, the maximum sound pressure that the sound-emitting part 11 can provide to the ear canal is not less than 79dB when the transducer input voltage does not exceed 21.1mW; in the frequency range of 700Hz to 1500Hz, when the design of partially extending the sound-emitting part 11 into the concha cavity is adopted, the maximum sound pressure that the sound-emitting part 11 can provide to the ear canal is not less than 75dB when the transducer input voltage does not exceed 21.1mW; in the frequency range of 2500Hz to 4000Hz, when the design of partially extending the sound-emitting part 11 into the concha cavity is adopted, the maximum sound pressure that the sound-emitting part 11 can provide to the ear canal is not less than 75dB when the transducer input voltage does not exceed 17.8mW.

[0071] It can be seen that when the sound-emitting portion 11 is worn with at least a portion of its portion extending into the concha cavity, within at least a portion of the frequency range (e.g., 300 Hz to 4000 Hz), and when the transducer input power does not exceed 21.1 mW, the sound-emitting portion 11 can provide a maximum sound pressure of no less than 75 dB into the ear canal. In some embodiments, by optimizing the volume, mass, and dimensions of the sound-emitting portion 11 and the battery compartment 13, the sound output efficiency of the sound-emitting portion 11 can be further improved, such that when the transducer input power does not exceed 21.1 mW, the sound-emitting portion 11 can provide a maximum sound pressure of no less than 78 dB into the ear canal.

[0072] In some embodiments, an input current-frequency graph (not shown) reflecting the relationship between the transducer's input current and frequency can also be determined based on a method similar to the voltage and input power in Figures 7 and 8. In some embodiments, a design in which the sound-emitting portion 11 partially extends into the concha cavity allows the sound-emitting portion 11 to provide a maximum sound pressure of no less than 75 dB into the ear canal within at least a portion of the frequency range, provided the transducer's input current does not exceed 35.3 mA.

[0073] For example, taking a frequency of 1000 Hz as an example, FIG6 shows that at a frequency of 1000 Hz, the maximum sound pressure provided by the sound-emitting portion 11 into the ear canal is 79 dB, and the transducer input current at 1000 Hz is 35.3 mA. In other words, at a frequency of 1000 Hz, using a design in which the sound-emitting portion 11 partially extends into the concha cavity, and provided the transducer input current does not exceed 35.3 mA, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is no less than 75 dB.

[0074] Furthermore, at a frequency of 500 Hz, the maximum sound pressure provided by the sound-emitting portion 11 into the ear canal is 80 dB, and the transducer input current is 34.1 mA. That is, at a frequency of 500 Hz, with the sound-emitting portion 11 partially extending into the cavum concha, and the transducer input current not exceeding 34.1 mA, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is no less than 80 dB. At a frequency of 800 Hz, with the sound-emitting portion 11 partially extending into the cavum concha, and the transducer input current not exceeding 34.1 mA, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is no less than 79 dB. At a frequency of 2000 Hz, with the sound-emitting portion 11 partially extending into the cavum concha, and the transducer input current not exceeding 17.8 mW, the maximum sound pressure that the sound-emitting portion 11 can provide into the ear canal is no less than 83 dB. In addition, in the frequency range of 300Hz to 4000Hz, the design of partially extending the sound-emitting part 11 into the concha cavity is adopted. When the input current of the transducer does not exceed 35.3mA, the maximum sound pressure that the sound-emitting part 11 can provide to the ear canal is not less than 79dB; in the frequency range of 700Hz to 1500Hz, the design of partially extending the sound-emitting part 11 into the concha cavity is adopted. When the input voltage of the transducer does not exceed 35.3mA, the maximum sound pressure that the sound-emitting part 11 can provide to the ear canal is not less than 75dB; in the frequency range of 2500Hz to 4000Hz, the design of partially extending the sound-emitting part 11 into the concha cavity is adopted. When the input voltage of the transducer does not exceed 32.4mA, the maximum sound pressure that the sound-emitting part 11 can provide to the ear canal is not less than 75dB.

[0075] In some embodiments, the ratio of the sound pressure provided by the sound-emitting part 11 into the ear canal to the input voltage of the transducer (also referred to as the sound efficiency of the sound-emitting part 11) can also reflect the sound output efficiency of the sound-emitting part 11. Figure 9 is a sound efficiency-frequency curve corresponding to Figure 6, wherein the horizontal axis represents frequency in Hertz (Hz); the vertical axis represents the sound efficiency of the sound-emitting part 11 in decibel volts (dB / V). The solid line 910 in Figure 9 represents the sound efficiency of the sound-emitting part 11 of the earphone 10 when the playback device outputs an output signal at the maximum volume level, and the other solid lines represent the sound efficiency of the sound-emitting part 11 when the transducer plays signals of different frequencies when the playback device is at a lower volume level (negative one grid to negative seven grids).

[0076] As can be seen from FIG9 , within at least part of the frequency range, by adopting a design in which the sound-emitting portion 11 partially extends into the concha cavity, the sound-emitting efficiency of the sound-emitting portion 11 is not less than 100 dB / V.

[0077] For example, taking a frequency of 1000 Hz as an example, as can be seen from the solid line 910 in FIG. 9 , using a design in which the sound-producing portion 11 partially extends into the cavum concha, the sound production efficiency of the sound-producing portion 11 at a frequency of 1000 Hz is 128 dB / V. Furthermore, at a frequency of 500 Hz, the sound production efficiency of the sound-producing portion 11 is 140 dB / V. At a frequency of 800 Hz, using a design in which the sound-producing portion 11 partially extends into the cavum concha, the sound production efficiency of the sound-producing portion 11 is 130 dB / V; and at a frequency of 2000 Hz, using a design in which the sound-producing portion 11 partially extends into the cavum concha, the sound production efficiency of the sound-producing portion 11 is 141 dB / V.

[0078] Continuing with Figures 6 and 7 , it can be seen that within the frequency range of 500Hz to 2000Hz, the design in which the sound-emitting portion 11 partially extends into the cavum conchae achieves a sound production efficiency of no less than 120dB / V. Referring to the solid lines corresponding to other volume levels, it can be seen that within the frequency range of 500Hz to 2000Hz, the design in which the sound-emitting portion 11 partially extends into the cavum conchae achieves a sound production efficiency between 100dB / V and 250dB / V. At a frequency of 10000Hz, the design in which the sound-emitting portion 11 partially extends into the cavum conchae achieves a sound production efficiency of no less than 100dB / V. Figures 6 and 7 also show that, even with a design in which the sound-emitting portion 11 partially extends into the cavum conchae, the sound-emitting portion 11 can generate high sound pressure in the ear canal at frequencies between 3000Hz and 5000Hz, even at relatively low input voltages.

[0079] It can be seen that when the sound-emitting portion 11 is worn in a manner where at least part of it extends into the concha cavity, the sound-emitting portion 11 can achieve higher sound-emitting efficiency within at least part of the frequency range (such as 500 Hz to 4000 Hz).

[0080] In some embodiments, higher sound efficiency helps to reduce the volume and mass of the optimized sound-emitting portion 11 and the battery compartment 13, thereby providing the user with a more comfortable wearing experience while ensuring the listening effect.

[0081] Specifically, if the sound pressure provided by the sound-emitting portion 11 into the ear canal is too low, the listening experience will be reduced, resulting in the user experiencing lower volume and greater susceptibility to ambient sound. To achieve higher sound pressure, it is often necessary to increase the size of the transducer or increase the input voltage. Increasing the size of the transducer can make the sound-emitting portion 11 bulkier, while increasing the input voltage can shorten the battery life of the earphone 10 without increasing the battery size. Increasing the battery size to ensure battery life will further increase the volume and mass of the battery compartment 13, as well as the volume and mass of the earphone 10, impacting the fit. In some embodiments, a design in which the sound-emitting portion 11 partially extends into the cavum concha or at least partially resides at the antihelix can improve the sound output efficiency of the sound-emitting portion 11. Based on this, the volume, mass, and other related parameters of the sound-emitting portion 11 and battery compartment 13 can be optimized (for example, by reducing the battery mass and / or the mass of the sound-emitting portion 11), ensuring a more comfortable fit while maintaining the listening experience.

[0082] In conjunction with Figures 3A and 10 , when the earphone 10 is worn, the battery compartment 13 and the sound-emitting portion 11 form a "lever"-like structure with a certain location on the earhook serving as a fulcrum. Excessive or insufficient mass in the sound-emitting portion 11 will result in an unstable lever-like structure, making the earphone 10 unstable when worn. Excessive mass in the sound-emitting portion 11 can affect the fit of the battery compartment 13 against the auricle, affecting the cavity-like structure formed between the sound-emitting portion 11 and the cavum concha, thereby reducing the volume of sound within the ear canal. To improve the sound output efficiency of the sound-emitting portion 11, the mass of the transducer can be reduced, thereby reducing the mass of the sound-emitting portion 11. While reducing the mass of the transducer will reduce the mass of the magnetic circuit assembly and thus the sound pressure output by the transducer, wearing the earphone with the sound-emitting portion 11 partially extended into the cavum concha or at least partially located at the antihelix can increase the sound pressure within the ear canal, thereby compensating for the effect of reduced transducer mass on sound pressure. Of course, an excessively small mass in the sound-emitting portion 11 will result in the transducer being unable to output sufficient sound pressure. Therefore, in order to take into account both the wearing stability and the listening effect of the earphone 10, in some embodiments, the mass of the sound-emitting part 11 may be between 3g and 6g.

[0083] If the dimensions of the sound-emitting portion 11 in the short-axis direction Z and the dimensions of the sound-emitting portion 11 in the long-axis direction Y are too large, the ear canal opening will be blocked to a certain extent, making it impossible to connect the ear canal opening to the external environment, thus defeating the original design purpose of the earphone 10. On the basis of improving the sound output efficiency of the sound-emitting portion 11, the volume of the transducer can be reduced, thereby reducing the size of the sound-emitting portion 11. It is understandable that although reducing the size of the transducer will reduce the sound pressure output by the transducer, wearing the earphone in such a way that the sound-emitting portion 11 is partially extended into the cavum concha or at least partially located at the antihelix can increase the sound pressure in the ear canal, thereby compensating for the effect of reducing the transducer volume on the sound pressure. Of course, an excessively small volume of the sound-emitting portion 11 will result in the transducer being unable to output sufficient sound pressure, especially the transducer being unable to push air to generate sufficient sound pressure in the mid- and low-frequency range. In some embodiments, to balance connectivity between the ear canal opening and the external environment and listening quality, when the sound-emitting portion 11 is partially extended into the cavum conchae, the size of the sound-emitting portion 11 in the short-axis direction Z is between 9 mm and 18 mm, and the size of the sound-emitting portion 11 in the long-axis direction Y is between 15 mm and 35 mm. In some embodiments, the size of the sound-emitting portion 11 in the short-axis direction Z is between 11 mm and 16 mm, and the size of the sound-emitting portion 11 in the long-axis direction Y is between 20 mm and 31 mm. When the sound-emitting portion 11 is at least partially located in the antihelix, the size of the sound-emitting portion 11 in the short-axis direction Z is between 9 mm and 18 mm, and the size of the sound-emitting portion 11 in the long-axis direction Y is between 16 mm and 34 mm. In some embodiments, the size of the sound-emitting portion 11 in the short-axis direction Z is between 12 mm and 17 mm, and the size of the sound-emitting portion 11 in the long-axis direction Y is between 17 mm and 30 mm.

[0084] In some embodiments, the size of the sound-emitting portion 11 along the long axis Y can be determined by: obtaining the short axis center plane of the magnetic circuit assembly, where the short axis center plane can be a plane passing through the central axis of the magnetic circuit assembly and perpendicular to the long axis Y of the sound-emitting portion 11; determining a section tangent to the end FE of the sound-emitting portion and parallel to the short axis center plane; and considering the distance from the short axis center plane to the section plane as half the size of the sound-emitting portion 11 along the long axis Y. It should be noted that the size of the sound-emitting portion 11 along the short axis Z can be determined using a similar method.

[0085] In some embodiments, the thickness of the sound-emitting portion 11 can affect the position of its center of mass, which in turn can affect the wearing stability of the earphone 10. For example, if the sound-emitting portion 11 is too thick, its center of mass will shift away from the ear, thereby affecting the fit of the sound-emitting portion 11 with the cavum concha. While improving the sound output efficiency of the sound-emitting portion 11, the thickness of the transducer can be reduced, thereby reducing the thickness of the sound-emitting portion 11. It is understood that while reducing the transducer's thickness will reduce the magnetic field strength provided by the magnetic circuit assembly, thereby affecting the sound pressure output by the transducer, wearing the earphone with the sound-emitting portion 11 partially extended into the cavum concha or at least partially located at the antihelix can increase the sound pressure in the ear canal, thereby compensating for the effect of reducing the transducer's thickness on sound pressure. Of course, if the sound-emitting portion 11 is too thin, the magnetic circuit assembly in the transducer will also be too thin, failing to provide sufficient magnetic field strength. Furthermore, while maintaining the same volume, increasing the thickness of the sound-emitting portion 11 will reduce its dimensions along the major axis Y and / or minor axis Z. This, in turn, reduces the size of the transducer diaphragm or voice coil, further impacting the transducer's output sound pressure. In some embodiments, to balance wearing stability and listening quality for the earphone 10, the thickness of the sound-emitting portion 11 is between 8 mm and 17 mm.

[0086] In some embodiments, the thickness dimension of the sound-emitting portion 11 also affects the thickness dimension of the interior of the sound-emitting portion 11, such as the front and rear cavities. For example, increasing the thickness dimension of the front cavity can increase the resonant frequency of the front cavity. To ensure that the resonance peak of the sound provided by the sound-emitting portion 11 to the ear canal is located at a position where the transducer has a higher sound emission efficiency (e.g., above 1000 Hz) for better listening experience, in some embodiments, the thickness dimension of the sound-emitting portion 11 is between 9 mm and 14 mm.

[0087] In some embodiments, the volume of the sound-emitting part 11 is closely related to the volume of the transducer. If the volume of the sound-emitting part 11 is relatively small, the volume of the transducer installed inside it is also relatively small, resulting in low efficiency of the transducer's diaphragm in pushing the air inside the shell of the sound-emitting part 11 to generate sound, affecting the acoustic output effect of the earphone 10, and further resulting in a decrease in the sound pressure provided by the sound-emitting part 11 to the ear canal. When the volume of the sound-emitting part 11 is too large, the sound-emitting part 11 exceeds the range of the cavum concha and cannot extend into the cavum concha, and cannot form a cavity-like structure, or the total size of the gap formed between the sound-emitting part 11 and the cavum concha is very large, affecting the listening volume of the user wearing the earphone 10 at the ear canal opening and the sound leakage effect in the far field. In some embodiments, the volume of the sound-emitting part 11 is 3500mm 2 ~5200mm 2 between.

[0088] In some embodiments, the volume of the sound-emitting part 11 can be determined by multiplying its projection on a reference plane (such as the sagittal plane of the human body) by the maximum dimension of the sound-emitting part 11 in the thickness direction. Alternatively, considering that the sound-emitting part 11 may have an irregular outer contour, the maximum dimensions of the sound-emitting part 11 in the major axis direction Y, the minor axis direction X and the thickness direction Z can be obtained respectively, and a first rectangular parallelepiped can be constructed based on the dimensions. In addition, the minimum dimensions of the sound-emitting part 11 in the major axis direction Y, the minor axis direction X and the thickness direction Z can be obtained respectively, and a second rectangular parallelepiped can be constructed based on the dimensions. It can be understood that the actual volume of the sound-emitting part is smaller than the volume of the first rectangular parallelepiped, but larger than the volume of the second rectangular parallelepiped. The range of the actual volume of the sound-emitting part 11 can be determined by calculating the volume of the first rectangular parallelepiped and the volume of the second rectangular parallelepiped. For example, in some embodiments, the volume of the first rectangular parallelepiped is 5500mm 2 , the volume of the second cuboid is 2800mm 2 , we can know that the volume of the sound-producing part 11 is 2800mm 2 ~5500mm 2 between.

[0089] In some embodiments, a more accurate volume of the sound-emitting portion 11 can be obtained using the water displacement method. Specifically, the openings of the sound-emitting portion 11 (for example, the opening where the sound-emitting portion 11 connects to the ear hook) can be sealed with a sealing material to form a sealed space inside. The sound-emitting portion 11 can then be placed in water, and the volume of the sound-emitting portion 11 can be determined based on the volume of the water (or an approximate method) that is discharged. It should be noted that, given that the sealing material may have a certain volume, when obtaining the volume of the sound-emitting portion 11 using the water displacement method, the actual volume measurement value can be slightly reduced based on experience to eliminate interference with the volume data caused by the sealing material.

[0090] In some embodiments, the volume of the sound-emitting part 11 can be reduced on the basis of improving the sound output efficiency of the sound-emitting part 11. It can be understood that although reducing the volume of the sound-emitting part 11 will reduce the sound pressure output by the transducer, the wearing method of partially extending the sound-emitting part 11 into the concha cavity or at least partially locating the sound-emitting part 11 at the antihelix can increase the sound pressure in the ear canal, thereby compensating for the effect of reducing the volume of the sound-emitting part 11 on the sound pressure. In order to enable the transducer to provide a maximum sound pressure of not less than 75dB in the ear canal at least within a part of the frequency range at a lower voltage (such as not more than 0.6V), in some embodiments, the volume of the sound-emitting part 11 can be 3300mm 2 ~4800mm 2 between.

[0091] A battery electrically connected to the sound-emitting portion 11 is disposed in the battery compartment 13. In some embodiments, the battery compartment 13 is located on the end of the first portion 121 away from the sound-emitting portion 11. It should be noted that the mass of the battery compartment 13 mainly comes from the mass of the battery. In the specification, "the mass of the battery compartment" refers to the sum of the mass of the battery compartment body and the mass of the battery. As mentioned above, when the earphone 10 is worn, the battery compartment 13 and the sound-emitting portion 11 will form a "lever"-like structure with a certain position on the ear hook as a fulcrum. Therefore, if the mass of the battery compartment 13 is too large or too small, the lever structure formed will be unstable, which will in turn cause the earphone 10 to be unstable when worn. Specifically, if the mass of the battery compartment 13 is too large, the earphone 10 will tilt toward the back of the auricle when worn, which will affect the fit between the sound-emitting portion 11 and the cavum concha. On the basis of improving the sound output efficiency of the sound-emitting portion 11, the output power of the battery can be reduced to reduce the mass of the battery. It is understandable that although reducing the mass of the battery will reduce the output power of the battery, the wearing method of partially extending the sound-emitting part 11 into the concha cavity can increase the sound pressure in the ear canal, thereby compensating for the effect of reducing the mass of the battery on the sound pressure. Of course, if the mass of the battery compartment 13 is too small, it will cause the earphone 10 to tilt toward the front of the auricle when worn, and it will also cause the battery to be insufficient to drive the transducer. In some embodiments, in order to take into account the wearing stability and listening effect of the earphone 10, the mass of the battery compartment 13 is between 1.2g and 3.1g.

[0092] In some embodiments, the mass of the battery is proportional to the battery charge. In some embodiments, a battery compartment 13 that is too small will affect the battery life of the earphone 10. Because the transducer can provide a maximum sound pressure of not less than 75dB into the ear canal at least within a part of the frequency range at a lower input voltage or input power, that is, under the premise of unchanged battery life, the transducer's demand for battery power is reduced. Therefore, in some embodiments, the mass of the battery can be reduced so that the mass of the battery compartment 13 is between 1.1g and 2.3g.

[0093] Positioning the sound-emitting portion 11 at least partially in the antihelix can also increase the sound pressure in the ear canal, thereby compensating for the effect of the battery mass on the sound pressure. In some embodiments, when the sound-emitting portion 11 is at least partially positioned in the antihelix, the mass of the battery compartment 13 is between 1.1g and 3.0g.

[0094] Based on the above description of the mass of the sound-emitting portion 11 and the battery compartment 13, when the mass of the sound-emitting portion 11 and the battery compartment 13 is maintained within a certain ratio range, the earphone 10 can have a good wearing feel and listening effect. In some embodiments, when the sound-emitting portion 11 is partially extended into the cavum concha, the ratio of the mass of the battery compartment 13 to the mass of the sound-emitting portion 11 is between 0.16 and 0.7. In some embodiments, the stable wearing of the earphone 10 can prevent the relative position of the sound outlet 112 and the user's ear canal from shifting, so that the sound-emitting portion 11 provides a higher sound pressure to the user's ear canal. Therefore, in some embodiments, to further improve the wearing stability, when the sound-emitting portion 11 is partially extended into the cavum concha, the ratio of the mass of the battery compartment 13 to the mass of the sound-emitting portion 11 is between 0.2 and 0.6.

[0095] Referring to Figure 11, in order to ensure that the sound-emitting part 11 of the earphone 10 is at least partially located at the antihelix when worn, so as to provide a good wearing feel and listening effect, in some embodiments, the ratio of the mass of the battery compartment 13 to the mass of the sound-emitting part 11 is between 0.15 and 0.66. In some embodiments, the stable wearing of the earphone 10 can prevent the relative position of the sound outlet and the user's ear canal from shifting, so that the sound-emitting part 11 and the auricle form a baffle structure as shown in Figure 5B, so that the sound-emitting part 11 provides a higher sound pressure to the user's ear canal. In some embodiments, in order to further improve the wearing stability, when the sound-emitting part 11 is at least partially located at the antihelix when worn, the ratio of the mass of the battery compartment 13 to the mass of the sound-emitting part 11 is between 0.2 and 0.52.

[0096] The volume of the battery compartment 13 is positively correlated with the volume of the battery. In some embodiments, in order to ensure the endurance of the earphone 10, when the sound-emitting portion 11 is partially inserted into the concha cavity, the volume of the battery compartment 13 is 850mm 2 ~1900mm 2 In some embodiments, on the basis of improving the sound output efficiency of the sound-emitting portion 11, the transducer reduces the demand for battery power. Therefore, when the sound-emitting portion 11 is partially extended into the concha cavity, the volume of the battery compartment 13 can be made smaller. The volume of the battery compartment 13 can be 750mm 2 ~1600mm 2 between.

[0097] In some embodiments, in order to ensure the battery life of the earphone 10, when the sound-emitting portion 11 is at least partially located at the antihelix, the volume of the battery compartment 13 is 600mm. 2 ~2200mm 2Since the sound-emitting portion 11 is at least partially located at the antihelix, the sound pressure in the ear canal can be increased, thereby compensating for the effect of the battery mass on the sound pressure. Therefore, in some embodiments, when the sound-emitting portion 11 is partially extended into the concha cavity, the volume of the battery compartment 13 can be 750mm 2 ~2000mm 2 between.

[0098] The basic concepts have been described above. It will be apparent to those skilled in the art that the detailed disclosure above is merely illustrative and does not limit the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to the present application. Such modifications, improvements, and amendments are suggested in the present application and remain within the spirit and scope of the exemplary embodiments of the present application.

[0099] The specific embodiments described in this application are merely exemplary, and one or more technical features in the specific embodiments are optional or additional and do not constitute essential technical features of the inventive concept of this application. In other words, the scope of protection of this application encompasses and is far broader than the specific embodiments.

[0100] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0101] Similarly, it should be noted that, in order to simplify the presentation of this application and thus facilitate understanding of one or more embodiments of the invention, the foregoing descriptions of the embodiments of this application sometimes combine multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, an embodiment may have fewer features than all of the features of a single embodiment disclosed above.

[0102] Finally, it should be understood that the embodiments in this application are intended only to illustrate the principles of the embodiments of this application. Other variations may also fall within the scope of this application. Therefore, as examples and not limitations, alternative configurations of the embodiments of this application may be considered consistent with the teachings of this application. Accordingly, the embodiments of this application are not limited to the embodiments explicitly introduced and described in this application.

Claims

1. A headset, characterized in that: include: a sound-emitting portion, comprising a transducer and a housing for accommodating the transducer; The ear hook includes a first part and a second part, the first part is hung between the user's auricle and head, the second part is connected to the first part and extends toward the front and outer side of the auricle and is connected to the sound-emitting part, so as to fix the sound-emitting part in a position near the ear canal but not blocking the ear canal opening. Within at least part of the frequency range, when the input voltage of the transducer does not exceed 0.6V, the maximum sound pressure that the sound-emitting part can provide into the ear canal is not less than 75dB.

2. The earphone according to claim 1, wherein: The at least partial frequency range includes 1000 Hz.

3. The earphone according to claim 2, wherein: At least a portion of the shell is inserted into the concha cavity, and a sound outlet is provided on the inner side of the shell facing the auricle.

4. The earphone according to claim 3, wherein: In at least part of the frequency range, when the input voltage of the transducer does not exceed 0.4 V, the maximum sound pressure that the sound-emitting part can provide into the ear canal is not less than 72 dB.

5. The earphone according to claim 3, wherein: In at least part of the frequency range, when the input current of the transducer does not exceed 35.3 mA, the maximum sound pressure that the sound-emitting part can provide into the ear canal is not less than 75 dB.

6. The earphone according to claim 3, wherein: In at least part of the frequency range, when the input power of the transducer does not exceed 21.1 mW, the maximum sound pressure that the sound-emitting part can provide into the ear canal is not less than 75 dB.

7. The earphone according to claim 3, wherein: In at least part of the frequency range, the sound efficiency of the sound emitting part is not less than 100 dB / V, and the sound efficiency of the sound emitting part is the ratio of the sound pressure provided by the sound emitting part into the ear canal to the input voltage of the transducer.

8. The earphone according to claim 7, wherein: In at least part of the frequency range, the sound emission efficiency of the sound emission part is between 100 and 250 dB / V.

9. The earphone according to claim 3, wherein: The mass of the sound-producing part is between 3g and 6g.

10. The earphone according to claim 9, wherein: The size of the sound-emitting part in the short-axis direction is between 11 mm and 16 mm.

11. The earphone according to claim 9, wherein: The size of the sound-emitting part in the long axis direction is between 20 mm and 31 mm.

12. The earphone according to claim 9, wherein: The dimension of the sound-generating portion in the thickness direction is between 9 mm and 14 mm.

13. The earphone according to claim 9, wherein: The volume of the sound-producing part is 3300mm 2 ~4800mm 2 between.

14. The earphone according to claim 3, wherein: An end of the first part of the ear hook away from the second part includes a battery compartment; the mass of the battery compartment is between 1.1g and 2.3g.

15. The earphone according to claim 14, wherein: The ratio of the mass of the battery compartment to the mass of the sound-emitting part is between 0.25 and 0.

54.

16. The earphone according to claim 14, wherein: The volume of the battery compartment is 750mm 2 ~1600mm 2 between.

17. The earphone according to claim 14, wherein: The radial dimension of the cross section of the battery compartment ranges from 8 mm to 12 mm.

18. The earphone according to claim 14, wherein: The axial length of the battery compartment is between 12 mm and 20 mm.

19. The earphone according to claim 2, wherein: At least a portion of the shell is located at the antihelix, and a sound outlet is provided on the inner side of the shell facing the auricle.

20. The earphone according to claim 19, wherein: In at least part of the frequency range, when the input voltage of the transducer does not exceed 0.6 V, the maximum sound pressure that the sound-emitting part can provide into the ear canal is not less than 70 dB.

21. The earphone according to claim 19, wherein: The mass of the sound-producing part is between 3g and 6g.

22. The earphone according to claim 21, wherein: The size of the sound-emitting part in the long axis direction is between 16 and 34 mm.

23. The earphone according to claim 21, wherein: The size of the sound-emitting part in the short-axis direction is between 7 mm and 14 mm.

24. The earphone according to claim 19, wherein: An end of the first part of the ear hook away from the second part includes a battery compartment; the mass of the battery compartment is between 1.1g and 3.0g.

25. The earphone according to claim 24, wherein: The ratio of the mass of the battery compartment to the mass of the sound-emitting part is between 0.2 and 0.

52.

26. The earphone according to claim 24, wherein: The battery compartment volume is 750mm 2 ~2000mm 2 between.

27. A headset, characterized in that: include: a sound-emitting portion, comprising a transducer and a housing for accommodating the transducer; The ear hook includes a first part and a second part, the first part is hung between the user's auricle and head, the second part is connected to the first part and extends toward the front and outer side of the auricle and connected to the sound-emitting part, so as to fix the sound-emitting part in a position near the ear canal but not blocking the ear canal opening. Within at least part of the frequency range, when the input current of the transducer does not exceed 35.3mA, the maximum sound pressure that the sound-emitting part can provide into the ear canal is not less than 75dB.

28. The earphone according to claim 27, wherein: In at least part of the frequency range, when the input current of the transducer does not exceed 23.5 mA, the maximum sound pressure that the sound-emitting part can provide into the ear canal is not less than 72 dB.

29. A headset, characterized in that: include: a sound-emitting portion, comprising a transducer and a housing for accommodating the transducer; The ear hook includes a first part and a second part, the first part is hung between the user's auricle and the head, the second part is connected to the first part and extends toward the front and outer side of the auricle and is connected to the sound-emitting part, so as to fix the sound-emitting part in a position near the ear canal but not blocking the ear canal opening. Within at least part of the frequency range, when the input power of the transducer does not exceed 21.1mW, the maximum sound pressure that the sound-emitting part can provide into the ear canal is not less than 75dB.

30. The earphone according to claim 29, wherein: In at least part of the frequency range, when the input power of the transducer does not exceed 9.41 mW, the maximum sound pressure that the sound-emitting part can provide into the ear canal is not less than 72 dB.

31. A headset, characterized in that: include: a sound-emitting portion, comprising a transducer and a housing for accommodating the transducer; An ear hook comprises a first part and a second part, wherein the first part is hung between the user's auricle and the head, and the second part is connected to the first part and extends toward the front and outer side of the auricle and is connected to the sound-emitting part, so as to fix the sound-emitting part in a position near the ear canal but not blocking the ear canal opening. In at least part of the frequency range, the sound-emitting efficiency of the sound-emitting part is not less than 100dB / V, and the sound-emitting efficiency of the sound-emitting part is the ratio of the sound pressure provided by the sound-emitting part into the ear canal to the input voltage of the transducer.

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