RU2800544C1 - Sound device - Google Patents

Abstract

FIELD: acoustics.

SUBSTANCE: earpiece contains a diaphragm and a housing. The body is made with two holes. The diaphragm is located in the body, the holes are located on both sides of the diaphragm. When the user wears the sound reproducing device, the distance between the first sound opening and the ear canal opening is smaller than the distance between the diaphragm and the ear canal opening, the range of included angle values between the connecting line between the first sound opening and the second sound opening and the connecting line between the center of mass of the diaphragm and the opening ear canal less than 45°, and the distance between the second sound opening and the opening of the ear canal is greater than the distance between the diaphragm and the opening of the ear canal.

EFFECT: improved sound quality, reduced sound leakage.

10 cl, 17 dwg

Description

The technical field to which the invention belongs

The present disclosure relates generally to the technical field of audio devices and, in particular, to audio devices.

State of the art

Compared with traditional in-ear headphones, the open audio device has the advantages of non-blocking, safety and comfort. By combining an open audio device with a wearable device (eg, glasses, virtual reality (VR) device), on the one hand, the wearable device (eg, eyeglass earpieces) can be used to support the audio device; on the other hand, the audio device can reduce the wearing fatigue of conventional wearable devices. For example, the audio device can be combined with a wearable device used in special sports scenarios (eg, special glasses for cycling, special glasses for running, etc.), which can greatly enhance the enjoyment of sports. Meanwhile, the open design of the audio device can also ensure safety during sports. When an audio device is combined with a wearable device, the weight of the wearable device may increase, and interference (eg, blockage of the ear canal) between the audio device and the ear may also affect the user's wearing experience.

Based on the above problems, the present disclosure provides a sound reproducing device with a relatively good wearing feeling, a relatively good listening effect, and a relatively good sound leakage reduction effect.

Disclosure of the essence of the invention

Embodiments of the present disclosure provide a sound reproducing device. The sound reproducing device may include a diaphragm and a housing. The housing may include a first sound guide hole and a second sound guide hole. The diaphragm may be disposed in the housing, and the first sound guide hole and the second sound guide hole may be respectively located on both sides of the diaphragm. When the user wears the sound reproducing device, the distance between the first sound opening and the user's ear canal opening may be less than the distance between the diaphragm and the user's ear canal opening, the included angle between the connecting line between the first sound opening and the second sound opening, and the connecting line between the center of mass of the diaphragm and the user's ear canal opening may be less than 45°, and the distance between the second sound passage and the user's ear canal can be greater than the distance between the diaphragm and the user's ear canal.

In some embodiments, the distance between the first sound passage and the opening of the ear canal of the user may be 0.5-2.5 cm.

In some embodiments, the distance between the second sound passage and the opening of the user's ear canal may be 1.5 cm-5 cm.

In some embodiments, the distance between the diaphragm and the opening of the ear canal of the user may be 1.5-3 cm.

In some embodiments, the ratio of the distance between the diaphragm and the user's ear canal to the distance between the first sound hole and the user's ear canal can be 1.4-3.

In some embodiments, the ratio of the distance between the second sound port and the user's ear canal to the distance between the first sound port and the user's ear canal may be 1.4-5.

In some embodiments, the housing and the diaphragm may form a first acoustic resonator for emitting sound, the first acoustic resonator and the first sound guide may be acoustically coupled, and the first sound guide may be located on different side walls of the housing corresponding to the first acoustic resonator.

In some embodiments, the first sound guide hole may include a first hole part and a second hole part, the first hole part and the second hole part can be connected, and the first hole part and the second hole part can be located on different side walls of the housing corresponding to the first acoustic resonator.

In some embodiments, the length of the side wall on which the first portion of the opening is located may be greater than the length of the side wall on which the second portion of the opening is located.

In some embodiments, the ratio of the length of the second portion of the opening to the length of the side wall on which the second portion of the opening is located may be 1/6-2/3.

In some embodiments, the length of the second portion of the opening may be greater than or equal to 1/6 the length of the side wall on which the second portion of the opening is located.

In some embodiments, the sound reproducing device may further include a magnetic core structure. The design of the magnetic core can be connected to the housing. The diaphragm may be connected to the structure of the magnetic circuit through the voice coil. The housing and the structure of the magnetic core can form a second acoustic resonator for sound emission. The second acoustic resonator and the second sound guide hole may be acoustically coupled. The second sound guide hole may be located on the side wall corresponding to the second acoustic resonator.

In some embodiments, the sound reproducing device magnetic circuit design may include a magnetically conductive cover. The magnetically conductive cover may be facing away from the diaphragm. The area of the magnetically conductive cover can be used as a side wall of the housing. The second sound guide hole may be located on the magnetically conductive cover.

In some embodiments, the ratio of the difference between the effective area of the second sound guide hole and the effective area of the first sound guide hole to the effective area of the first sound guide hole or the effective area of the second sound guide hole may be less than or equal to 40%.

In some embodiments, the audio device may include a wearable component. The wearable component may include a connecting segment and a concave segment connected to the connecting segment. The concave segment may create a downward camber at the top edge of the wearable component will have a downward camber. The housing may be connected to the concave segment.

In some embodiments, the implementation of the concave segment can be made so that the concave segment is located near the ear of the user when the user is wearing a wearable component. The concave segment allows the first sound guide hole to be positioned adjacent to the user's ear.

In some embodiments, the implementation of the concave segment may include a mounting part and a transition part connected at an angle. The housing can be located on the mounting part or on the transition part. The transition part and the mounting part can be bent and connected by a connecting segment and can extend downward.

In some embodiments, the implementation of the angle may be 15°-150°.

In some embodiments, the connection segment may include a first connection segment. The transition part can be connected between the mounting part and the first connecting segment, and the transition part can be bent and connected to the first connecting segment and extend downward.

In some embodiments, the connection segment may further include a second connection segment. The second connecting segment can be connected to one end of the mounting part.

In some embodiments, the first sound guide opening may be located on at least one of: the inside of the concave segment facing the user's head, the edge of the concave segment facing the user's tragus, or the side surface of the concave segment facing the user's tragus.

In some embodiments, the wearable component may include a left ear wear and a right ear wear, which are used to wear on the user's left and right ears, respectively.

Brief description of the drawings

1 is a schematic diagram illustrating an exemplary audio device according to some embodiments of the present disclosure;

Fig. 2 is a schematic diagram illustrating a sound reproducing device according to some embodiments of the present disclosure;

3 is a schematic diagram illustrating another audio device according to some embodiments of the present disclosure;

4 is a schematic diagram illustrating the sound pressure level of an acoustic unit at various positions according to some embodiments of the present disclosure;

Fig. 5 is a schematic diagram illustrating the placement of an acoustic unit in various positions according to some embodiments of the present disclosure;

Fig. 6 is a schematic diagram illustrating acoustic units according to some embodiments of the present disclosure;

Fig. 7 is a schematic diagram illustrating various acoustic units according to some embodiments of the present disclosure;

Fig. 8 is a graph illustrating the frequency responses of various acoustic units according to some embodiments of the present disclosure;

Fig. 9 shows the distribution of various acoustic units in the ear according to some embodiments of the present disclosure;

Fig. 10A is a radiation pattern of an acoustic unit according to some embodiments of the present disclosure;

10B is a radiation pattern of an acoustic unit according to some embodiments of the present disclosure;

11 is a schematic diagram illustrating the principle of dipole reflection from a face according to some embodiments of the present disclosure;

12 is a schematic diagram illustrating a sound reproducing device according to some embodiments of the present disclosure;

13 is a schematic diagram illustrating a wearable component according to some embodiments of the present disclosure;

14A is a schematic diagram illustrating a wearable component according to some embodiments of the present disclosure;

14B is a schematic diagram illustrating a wearable component from a different angle of view according to some embodiments of the present disclosure;

15 is a schematic diagram illustrating a wearable component according to some embodiments of the present disclosure;

16 is a schematic diagram illustrating another wearable component according to some embodiments of the present disclosure; And

17 is a schematic diagram illustrating acoustic units according to some embodiments of the present disclosure.

Implementation of the invention

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings to be used in describing the embodiments are briefly described below. Obviously, the following accompanying drawings are only some examples or embodiments of this description, and those of ordinary skill in the art can apply this description to other similar scenarios in accordance with these accompanying drawings without creative effort. Unless the context clearly implies this, or the context illustrates otherwise, the same reference number in the drawings refers to the same construction or operation.

As used herein, the terms "system", "device", "unit", "module", and/or "unit" are to be understood as one way of distinguishing between various components, elements, parts, sections, or assemblies of various levels, in order increase. However, terms may be replaced by another expression if they serve the same purpose.

As used herein, the singular forms include the plural forms of the entity being defined, unless the context clearly dictates otherwise. Generally speaking, the terms "comprise" and "comprise" as used herein indicate the presence of the specified steps and elements, these steps and elements do not constitute an exhaustive list, and the method or device may also include other steps or elements.

Embodiments of the present disclosure provide a sound reproducing device. In some embodiments, the sound reproducing device may include a diaphragm and a housing. In some embodiments, the body may include a first sound guide hole and a second sound guide hole. The diaphragm may be disposed in the housing, and the first sound guide hole and the second sound guide hole may be respectively located on both sides of the diaphragm. When the user wears the sound reproducing device, the distance between the first sound port and the user's ear canal can be less than the distance between the diaphragm and the user's ear canal, and the distance between the second sound port and the user's ear canal can be greater than the distance between the diaphragm and an opening in the user's ear canal, so that the first sound passage may be closer to the opening in the user's ear canal and the second sound passage may be further away from the opening of the user's ear canal. The sound output from the first sound guide hole and the sound output from the second sound guide hole may satisfy a certain condition (for example, the phase difference may be about 180°) to generate dipole radiation. In the far field, the sound output from the first sound guide hole and the sound output from the second sound guide hole can be suppressed due to the phase inversion, thereby reducing the sound leakage amount of the sound output device in the far field and preventing the sound output from the sound output device from being heard people nearby. In some embodiments, the included angle between the connecting line between the first sound opening and the second sound opening and the connecting line between the center of mass of the diaphragm and the opening of the ear canal of the user may be less than 45°. When the user wears the sound reproducing device, the angle between the connecting line between the first sound opening and the second sound opening and the connecting line between the center of mass of the diaphragm and the opening of the ear canal of the user may be equal to a certain angle (for example, less than 45°). The direction of the dipole radiation formed by the sound output from the first sound guide hole and the sound output from the second sound guide hole can point to the ear canal of the user, thereby increasing the audible volume and reducing the sound leakage volume in the far field when the user wears the sound reproducing device. In some embodiments, when the sound reproducing device is a wearable device (for example, glasses, smart helmet, etc.) with an audio function, on the one hand, the acoustic units of the sound reproducing device may not interfere with the user's ear (for example, blocking the ear canal) thereby improving the user experience when wearing the audio device; on the other hand, acoustic characteristics can be secured and sound leakage can be reduced by providing the first sound passage and the second sound passage.

1 is a schematic diagram illustrating an exemplary audio device according to some embodiments of the present disclosure. As shown in FIG. 1, audio device 100 may include an acoustic unit 110 and a wearable component 120.

In some embodiments, the audio device 100 may include glasses, a smart bracelet, headphones, a hearing aid, a smart helmet, a smart watch, smart clothing, a smart backpack, a smart accessory, or the like. or any combination of them. For example, the audio device 100 may be functional myopia glasses, presbyopia glasses, cycling glasses or sunglasses, and so on. or smart glasses such as audio glasses with headphone function. The audio device 100 may also be a head-mounted device such as a helmet, an augmented reality (AR) device, or a virtual reality (VR) device. In some embodiments, an augmented reality device or virtual reality device may include a virtual reality helmet, virtual reality goggles, an augmented reality helmet, augmented reality goggles, and the like. or any combination of them. For example, a VR device or VR device may include Google Glass, Oculus Rift, Hololens, Gear VR, etc.

Acoustic unit 110 may be configured to convert a signal containing audio information into an audio signal. In some embodiments, the audio signal may include bone conduction sound waves or air conduction sound waves. For example, the acoustic unit 110 may generate a mechanical vibration to output sound waves (ie, an audio signal) in response to receiving a signal containing audio information. For example, if the acoustic unit 110 is an air conduction speaker, the acoustic unit 110 may include a housing 111, a vibration component 112, and a magnetic circuit structure 113. The vibration component 112 and the core structure 113 may be housed in the housing 111. The vibration component 112 and the core structure 113 may be connected via a voice coil (not shown in FIG. 1). The vibration component 112 may be a diaphragm. The internal magnetic field of the core structure 113 may change in response to a signal containing sound (ie, an electrical signal). The voice coil may vibrate under the action of the core structure 113. The vibration component 112 (diaphragm) may vibrate in response to voice coil vibration. The vibration component 112 may cause the air inside the housing 111 to vibrate, thereby generating sound waves. In some embodiments, acoustic unit 110 may further include one or more sound guide holes. The sound waves generated by the vibrating component 112 may be radiated to the outside through the sound guide holes. As another example, when the acoustic unit 110 is a bone conduction speaker, the acoustic unit 110 may include a vibration component 112 and/or a vibration conductive component (e.g., at least a portion of the body of the wearable component 120 in the audio device 100) coupled to the vibration component 112. Acoustic unit 110 can create mechanical vibrations, accompanied by energy conversion. Acoustic unit 110 may convert the audio information signal into mechanical vibration. The mechanical vibration can be transmitted to the user's auditory nerve via the sound guide component via bone conduction. It should be noted that when the acoustic unit 110 is a bone conduction speaker, the acoustic unit 110 can also generate air conduction sound waves while outputting mechanical vibration (ie, bone conduction sound waves). The above transformation process may include the coexistence and transformation of different types of energy. For example, an electrical signal (ie, a signal containing audio information) can be directly converted to mechanical vibration via the vibration component 112 of the acoustic unit 110, and the mechanical vibration can be transmitted via the vibration conductive component to transmit sound waves. As another example, audio information may be contained in an optical signal. A particular acoustic unit 110 may carry out the process of converting an optical signal into an audio signal. Other types of energy that may coexist and be converted during operation of acoustic unit 110 may include thermal energy, magnetic field energy, and the like. In some embodiments, the type of acoustic unit 110 may include a moving coil type, an electrostatic type, a piezoelectric type, a moving magnetic circuit type, a pneumatic type, an electromagnetic type, and so on.

In some embodiments, acoustic unit 110 may include one or more air conduction speakers. In some embodiments, acoustic unit 110 may include one or more bone conduction speakers. In some embodiments, acoustic unit 110 may include a combination of one or more bone conduction speakers and one or more air conduction speakers. In some embodiments, the implementation of the acoustic unit 110 may be located on the wearable component 120 to transmit reproduced sound to the user. In some embodiments, acoustic unit 110 may be located at the end of wearable component 120 or elsewhere. For example, acoustic unit 110 may be located at the end of wearable component 120, while acoustic unit 110 may not be located elsewhere on wearable component 120. In some embodiments, multiple acoustic units 110 may be located at multiple positions on wearable component 120. For example, according to at least one acoustic unit 110 may be located at the end of the wearable component 120 or elsewhere. In some embodiments, the acoustic unit 110 may be located on the outer surface of the wearable component 120 or within the wearable component 120. For example, the acoustic unit 110 may be located near a position (e.g., a position of the wearable component 120 adjacent to the earhook of the wearer) where wearable component 120 is in contact with the user. As another example, wearable component 120 may include a cavity for receiving acoustic unit 110. At least a portion of acoustic unit 110 may be placed in the cavity. As another example, acoustic unit 110 and wearable component 120 may be combined into a single entity.

In some embodiments, the audio device 100 may further include a visual component (not shown in FIG. 1). The visual component can be used to be placed on a specific part of the user's body, such as eyes, hands, or other positions. The wearable component 120 may be connected to one or both ends of the visible component to keep the audio device 100 in stable contact with the user. In some embodiments, the visual component may be a lens, a display screen, or a display screen acting as a lens. In some embodiments, the visible component may also be a lens and its accessory, or a display screen and its accessory. The auxiliary component may be a component such as a spectacle frame, holder, etc. In some embodiments, the implementation of the visual component may also be an auxiliary component that does not include a lens or display screen.

In some embodiments, the wearable component 120 may be a goggle temple or a head-mounted component, etc. For example, if the wearable component 120 is a goggle ear piece, the audio device 100 may include a visual component and two wearable components 120. left and right ear. As another example, if the wearable component 120 is a head-mounted component, the head-mounted component can be adjusted to adapt to the shape of the wearer's head. Various functional components may also be located on the head component, and the audio device 100 may include a visual component and a wearable component 120. The two ends of the wearable component 120 may be respectively connected to the two ends of the visual component. It should be noted that the design of the wearable component 120 can be adaptively adjusted according to the type of audio device 100 or specific application scenarios.

It should be understood that Figure 1 is provided for illustrative purposes only and is not intended to limit the scope of the present disclosure. Those skilled in the art may make various changes and modifications in accordance with the contents of this disclosure. All of these changes and modifications may fall within the protection scope of this application. In some embodiments, the implementation of the number of instances in the figure may be adjusted in accordance with the actual conditions. In some embodiments, one or more elements in Figure 1 may be omitted, or one or more other elements may be added or removed. For example, audio device 100 may not include wearable component 120, and housing 111 may perform the function of carrying wearable component 120. In some embodiments, the element may be replaced by another element that performs a similar function. In some embodiments, an element may be divided into a plurality of sub-elements, or a plurality of elements may be combined into one element. For example, body 111 and wearable component 120 may be combined into one element.

To further describe the audio device, an exemplary description of the audio device is given below. 2 is a schematic diagram illustrating a sound reproducing device according to some embodiments of the present disclosure. The audio device 200 shown in FIG. 2 may be a virtual reality device or an augmented reality device. As shown in FIG. 2, audio device 200 may include an acoustic unit 210, a wearable component 220, and a visual component 230. In some embodiments, wearable component 220 may be a head mounted component. The wearable component 220 may be an elastic material construction or an adjustable length construction. The two ends of the wearable component 220 may be connected to the two ends of the visual component 230, respectively. 220 and visual component 230 on the user's head. In some embodiments, the connection between the wearable component 220 and the visual component 230 may include, but is not limited to, a flexible connection, such as a swivel or telescoping connection, or a relatively fixed connection, such as a clamp connection, a screw connection, or a one-piece molded connection.

In some embodiments, the wearable component 220 may include a concave portion 240 for receiving the acoustic unit 210. When a user wears the audio device 200, the concave portion 240 (eg, its front side, top side, etc.) may be positioned proximate the user's ear. Thus, the acoustic unit 210 can be positioned close to the user's ear without blocking the user's ear canal opening, so that the user can receive sound from the external environment while the sound produced by the acoustic unit 210 is heard by the user. In some embodiments, the acoustic unit 210 may be located on the outer surface of the concave portion 240. For example, when the acoustic unit 210 is a bone conduction speaker, the acoustic unit 210 may be located on the side surface of the concave portion 240 in contact with the user. As another example, when the acoustic unit 210 is an air conduction speaker, the acoustic unit 210 may be located on the side surface of the concave portion 240 not in contact with the user. In some embodiments, acoustic unit 210 may be located within concave portion 240. For example, a cavity (not shown in FIG. 2) may be located within concave portion 240 to accommodate acoustic unit 210. Acoustic unit 210 may be located within an accommodation cavity. When the acoustic unit 210 is located in the accommodative cavity, the concave portion 240 can be used as the housing of the acoustic unit 210, and other components (eg, magnetic circuit structure, diaphragm, etc.) of the acoustic unit 210 can be located in the concave portion 240. Taking into As an example, an air conduction speaker used as acoustic unit 210, in some embodiments, acoustic unit 210 may include a diaphragm and a magnetic circuit structure (not shown in FIG. 2). The diaphragm and the structure of the magnetic circuit can be connected through the voice coil. The core structure may be coupled to the body (or concave portion 240) of the acoustic unit 210. The side of the diaphragm facing away from the core structure may form the front surface of the acoustic unit 210, and the side of the core structure facing away from the diaphragm may form the rear surface. acoustic unit 210. The diaphragm may vibrate causing the acoustic unit to radiate sound outward from the front surface and rear surface of the acoustic unit, respectively. In some embodiments, the body (or concave portion 240) of the acoustic unit 210 may have at least two sound guide holes (not shown in FIG. 2). The sound guide holes may include a first sound guide hole (also referred to as a sound guide outlet) and a second sound guide hole (also referred to as a pressure relief hole). The first sound guide hole may be configured to output the sound emitted by the front surface of the acoustic unit 210, and the second sound guide hole may be configured to output the sound emitted from the rear surface of the acoustic unit 220. The phase of the sound output from the first sound guide hole and the phase of the sound output from the second sound port may be considered as opposite, so the sound output from the first sound port and the sound output from the second sound port may form a dipole. When the user wears the sound reproducing device 200, the first sound port can be closer to the user's ear canal and the second sound port can face away from the user's ear canal, so the acoustic unit 210 can have a relatively good acoustic output effect. In some embodiments, there may be one or more first sound guide holes and second sound guide holes. In some embodiments, the listening effect and sound leakage reduction effect of the sound reproducing device 200 can be further improved by adjusting parameters such as the number, size, position, and acoustic impedance of the first sound port or the second sound port. Additional descriptions of the first sound passage, the second sound passage, and the concave portion 240 can be found elsewhere in this disclosure (eg, in the descriptions with reference to FIGS. 4-11 and related descriptions).

3 is a schematic diagram illustrating another audio device according to some embodiments of the present disclosure. The sound reproducing device 300 shown in FIG. 3 may be glasses. As shown in FIG. 3, the audio device 300 may include an acoustic unit 310, a wearable component 320, and a visual component 330 (ie, an eyeglass frame or lens). In some embodiments, the wearable component 320 may include two eyeglass temple designs. One end of the wearable component 320 may be connected to the end of the visual component 330. The two earpiece designs of the goggles may correspond to the wearer's left and right ears, respectively. When the user is wearing the audio device 300, wearing the audio device 200 can be realized by supporting the wearable component 320 with the user's ears and supporting the visual component 230 with the user's nose. In some embodiments, the connection between the wearable component 320 and the visual component 330 may include, but is not limited to, a flexible connection such as a swivel or telescoping connection, or a relatively fixed connection such as a clip connection, a screw connection, or a one-piece molded connection. The construction of the acoustic unit 310 may be similar to that of the acoustic unit 210 in FIG. 2, and the design of the concave portion 340 may be similar to that of the concave portion 240 of FIG. 2, which are not repeated here.

It should be noted that the above descriptions of the audio player 200 and the audio player 300 are provided for illustrative purposes only and are not intended to limit the scope of the present disclosure. Those skilled in the art may make various changes and modifications to the audio device 200 and the audio device 300 in accordance with the contents of the present disclosure. However, such modifications and changes are still included in the scope of the present description. For example, the wearable component 220 of the audio device 200 may be a goggle ear structure, and the wearable component 320 of the audio device 300 may be a head-mounted component.

When a user wears an audio device, so that the acoustic unit (e.g., acoustic unit 210, acoustic unit 310) does not interfere with the user's ear and does not interfere with the user's ability to receive environmental sound other than the sound emitted by the acoustic unit, the acoustic unit may be positioned near the user's ear or at at least part of the acoustic unit may be located within the projection area of the user's ear on the face. 4 is a schematic diagram illustrating the sound pressure level of the acoustic unit at various positions according to some embodiments of the present disclosure, which may indicate the degree of influence of the sound wave obtained during the actual test (i.e., the sound output from the first sound guide of the acoustic unit) on audible loudness at different positions in front of the ear. As shown in FIG. 4, as an illustrative example, the distribution position of the first sound guide hole of the acoustic unit on the front side of the user's ear can be zone 1, zone 2, zone 3, zone 4, zone 5, zone 6, zone 7, zone 8 or zone 9. The lighter the grayscale image on the right side of FIG. 4, the greater the sound pressure level audible to the human ear when the first sound guide hole is located near this zone. For example, when the first sound guide hole of the acoustic unit is located in zone 9, the audible volume may be approximately 88 dB. As another example, when the first sound port of the acoustic unit is located in zones 6, the audible volume may be approximately 86 dB. As another example, when the first sound port of the acoustic unit is located in zones 7, the audible loudness may be approximately 76 dB. From figure 4 it can be seen that when the location of the first sound guide hole of the acoustic unit near zone 3, zone 5, zone 6, zone 8 or zone 9, the audible volume can be relatively high. Preferably, when the first sound guide hole of the acoustic unit is located adjacent to zone 5, zone 6, zone 8 or zone 9, this can ensure that a listener can hear a relatively high volume. Furthermore, it is preferable that when the first sound guide hole of the acoustic unit is located adjacent to zone 6 or zone 9, this can ensure that a listener can hear a relatively high volume. In some embodiments, to ensure that a user can hear a relatively high volume while wearing a sound reproducing device, the first sound guide hole (see FIG. 7(a)) may be positioned as close as possible to the user's ear canal opening. However, to ensure that the ear canal opening is open, the first sound guide hole may be at a certain distance from the ear canal opening. The distance between the first sound passage and the user's ear canal can refer to the distance between the center of the first sound hole and the center of the user's ear canal or the distance between the center of the first sound hole and the plane on which the user's ear hole is located. In some embodiments, the distance between the first sound passage and the user's ear canal may be less than 4 cm. In some embodiments, the distance between the first sound passage and the user's ear canal may be less than 3 cm. the opening of the user's ear canal may be in the range of 0.5 cm to 2.5 cm. In some embodiments, the distance between the first sound opening and the opening of the user's ear canal may be in the range of 1-2 cm. be transmitted to the opening of the user's ear canal through an acoustic structure (for example, an acoustic resonator, a sound tube, a sound guide hole, etc.). In some embodiments, the listening effect of the sound reproducing device can be improved by adjusting the distance between the center of mass of the diaphragm and the orifice of the user's ear canal. The center of mass of the diaphragm may refer to the center of mass of the diaphragm. For example, the diaphragm may have a circular design and the center of mass of the diaphragm may be the center of the circular diaphragm. As another example, the diaphragm may be of a rectangular design and the center of mass of the diaphragm may be the geometric center of the rectangle. The ear canal can refer to the opening of the external auditory canal of the human body. The distance between the diaphragm and the opening of the ear canal of the user may refer to the distance between the center of mass of the diaphragm and the center of the opening of the ear canal of the user. In other embodiments, the distance between the diaphragm and the user's ear canal can also refer to the distance between the center of mass of the diaphragm and the plane in which the user's ear canal is located. In some embodiments, the distance between the center of mass of the diaphragm and the opening of the user's ear canal may be less than 5 cm. In some embodiments, the distance between the center of mass of the diaphragm and the opening of the ear canal of the user may be less than 4 cm. In some embodiments, the distance between the center of mass of the diaphragm and opening of the user's ear canal may be in the range of 1 cm to 4 cm. In some embodiments, the distance between the center of mass of the diaphragm and the opening of the user's ear canal may be in the range of 1.5 cm to 3.5 cm. In some embodiments, the distance between the center of mass of the diaphragm and the opening of the user's ear canal may be in the range of 2-3 cm. In some embodiments, the ratio of the distance between the center of mass of the diaphragm and the opening of the ear canal of the user to the distance between the first sound passage and the opening of the user's ear canal may be greater than 1.2. In some embodiments, the ratio of the distance between the center of mass of the diaphragm and the opening of the user's ear canal to the distance between the first sound hole and the hole of the user's ear canal may be in the range of 1.2-4. In some embodiments, the ratio of the distance between the center of mass of the diaphragm and the opening of the user's ear canal to the distance between the first sound hole and the hole of the user's ear canal may be in the range of 1.4-3. In some embodiments, the ratio of the distance between the center of mass of the diaphragm and the opening of the user's ear canal to the distance between the first sound hole and the hole of the user's ear canal may be in the range of 1.5-2. In some embodiments, the ratio of the distance between the center of mass of the diaphragm and the opening of the user's ear canal to the distance between the first sound hole and the hole of the user's ear canal may be in the range of 1.6-1.8.

With the same sound source, different positions near the user's ear can affect the acoustic output of the acoustic unit. In some embodiments, the acoustic output of an acoustic unit in a sound reproducing device can be improved by adjusting the position of the first sound guide hole in the acoustic unit. Figure 5 is a schematic diagram illustrating the location of the acoustic unit in various positions according to some embodiments of the present disclosure.

As shown in Fig. 5(a), the sound reproducing device may be glasses. The audio device may include a wearable component 510 and an acoustic unit 511. The wearable component 510 may have a goggle earpiece design. Acoustic unit 511 may have a rectangular design. The longer side of the acoustic unit 511 may be connected to the wearable component 510, and the shorter side of the acoustic unit 511 may be approximately perpendicular to the wearable component 510. When a user is wearing a sound reproducing device, the acoustic unit 511 may be located on the front side of the top of the user's ear. The shorter side of the acoustic unit 511 may be directly opposite the user's ear. In some embodiments, acoustic unit 511 may include a first sound guide hole (not shown in FIG. 5(a)). The first sound guide hole may be configured to output the sound reproduced by the front surface of the acoustic unit 511 to the external environment. The first sound guide hole may be located in the lower right corner of the acoustic unit 511, so the first sound guide hole of the acoustic unit 511 may be adjacent to the opening of the user's ear canal. The position of the first sound guide hole can be considered as a position near zone 2 or zone 3 in Fig.4.

The structure of the sound reproducing device in FIG. 5(b) may be essentially the same as in FIG. 5(a). The difference between the sound reproducing devices in Fig. 5(b) and Fig. 5(a) may be that the connection position of the acoustic unit 512 in the sound reproducing device in Fig. 5(b) with the eyeglass earpiece design is different from the connection position of the acoustic unit 511 in the sound reproducing device in figure 5(a) with the design of the temples of the glasses. As shown in FIG. 5(b), the shorter side of the acoustic unit 512 may be connected to the wearable component, and the longer side of the acoustic unit 512 may be positioned approximately vertical to the wearable component. When the user is wearing the audio device, the acoustic unit 512 may be positioned on the front side of the user's ear. The longer side of the acoustic unit 512 may be directly opposite the user's ear. In some embodiments, acoustic unit 512 may include a first sound guide hole (not shown in FIG. 5(b)). The sound hole is located in the lower right corner of the acoustic unit 512, so the first sound guide hole of the acoustic unit 512 is close to the opening of the user's ear canal. Taking the height of the opening of the ear canal of the user as a reference plane, the position of the first sound passage in Fig. 5(b) may be lower than the position of the first sound passage in Fig. 5(a). That is, the position of the first sound opening in FIG. 5(b) may be closer to the opening of the user's ear canal. The position of the first sound guide hole in Fig. 5(b) can be considered as a position adjacent to zone 5 or zone 8 in Fig. 4.

The structure of the sound reproducing device in FIG. 5(c) may be substantially the same as in FIG. 5(b). The difference between the sound reproducing devices in Fig. 5(b) and Fig. 5(c) may be that the connection position of the acoustic unit 513 in the sound reproducing device in Fig. 5(c) with the eyeglass earpiece design is different from the connection position of the acoustic unit 512 in the sound reproducing device in figure 5(b) with the design of the temples of the glasses. As shown in FIG. 5(c), the shorter side of the acoustic unit 513 may be connected to the wearable component, and the longer side of the acoustic unit 513 may be connected to the wearable component at an angle (e.g., less than 90°), so the first sound guide hole acoustic unit 513 may be closer to the opening of the user's ear canal. When the user wears the sound generating device, the acoustic unit 513 may be located on the front side of the pinna. The longer side of the acoustic unit 513 may be inclined towards the opening of the user's ear canal, so that the first sound guide hole of the acoustic unit 513 may be closer to the opening of the user's ear canal. In this case, the position of the first sound guide hole in Fig. 5(c) can be considered as a position adjacent to zone 6 or zone 9 in Fig. 4.

6 is a schematic diagram illustrating an acoustic unit according to some embodiments of the present disclosure. As shown in FIG. 6, the acoustic unit may include a housing 610 for housing a diaphragm and a magnetic circuit structure (both not shown in FIG. 6) of the acoustic unit. The diaphragm and the structure of the magnetic circuit can be connected through the voice coil. The core structure may be connected to the housing 610. The side of the diaphragm facing away from the core structure may form the front surface of the acoustic unit, and the side of the core structure away from the diaphragm may form the back surface of the acoustic unit. The diaphragm may vibrate, causing the acoustic unit to radiate sound outward from the front surface and rear surface of the acoustic unit, respectively. In some embodiments, the housing 610 and the diaphragm may form a first acoustic resonator for emitting sound. The first acoustic resonator and the first sound guide hole may be acoustically coupled. The first sound guide hole can be located on different side walls of the housing corresponding to the first acoustic resonator. When the user wears the sound reproducing device, the first sound guide hole may be adjacent to the opening of the user's ear canal. In some embodiments, the first sound guide hole may include a first hole part 621 and a second hole part 622. The first hole part 621 and the second hole part 622 may be connected. The first hole part 621 and the second hole part 622 may be located on different side walls of the housing corresponding to the first acoustic resonator. For example, the first hole part 621 and the second hole part 622 may be located on two adjacent side walls of the housing corresponding to the first acoustic resonator. As another example, the first hole part 621 and the second hole part 622 may be located on two adjacent edges of the housing corresponding to the first acoustic resonator. In some embodiments, the length of the side wall on which the first portion 621 of the opening is located may be greater than the length of the side wall on which the second portion 622 of the opening is located. That is, the first hole part 621 may be located on the side wall of the body 610 with a relatively long length, and the second hole part 622 may be located on the side wall of the body 610 with a relatively short length. When the acoustic unit is located on a wearable component (eg, wearable component 510 shown in FIG. 5(c)), the first opening portion 621 and the second opening portion 622 of the first sound passage may be closer to the opening of the user's ear canal. For example, the first hole portion 621 and the second hole portion 622 shown in FIG. 6 may be located at the lower right corner of the housing 610. When a user is wearing a sound reproducing device, the position of the acoustic unit may be located on the front side of the user's ear, as shown in Fig.6. In this case, the acoustic unit can be positioned obliquely. The first opening portion 621 may contact other portions (eg, tragus) of the user's ear. In this case, the first opening portion 621 may not directly face the opening of the user's ear canal, which affects the listening experience of the user. In order to improve the acoustic output effect of the acoustic unit, the first sound guide hole may face the opening of the user's ear canal by placing the second hole part 622 on the other side wall adjacent to the side wall of the housing 610 where the first hole part 621 is located. For ease of understanding, the first hole portion 621 and the second hole portion 622 may be referred to herein as the equivalent sound guide hole 623. The equivalent sound guide hole 623 may be considered as a connection zone formed by connecting the two ends of the first hole portion 621 and the second hole portion 622 with the greatest distance . When the acoustic unit is inclined, the equivalent sound guide hole 623 may face the opening of the user's ear canal. In some embodiments, the acoustic unit may include at least one resonant frequency. The resonant frequency may have a positive correlation with the area of the first sound guide hole 620 of the acoustic unit, that is, the larger the area of the first sound guide hole 620, the higher the resonant frequency. When an acoustic unit has a relatively high resonant frequency, the corresponding frequency response curve of the acoustic unit may be relatively flat over a frequency range less than the resonant frequency. In this case, the acoustic unit has a relatively good acoustic output over a wider frequency range. In this embodiment, the second hole part 622 may be located on the acoustic unit based on the first hole part 621, so the first sound guide hole can face the user's ear canal opening, the area of the first sound guide hole can also be increased, and the resonant frequency of the acoustic unit can be increased. , thereby improving the acoustic output effect of the acoustic unit.

As the main output portion of the front sound of the acoustic unit, the first hole portion 621 may be relatively long. The longer the length of the first part of the hole, the higher the resonant frequency of the first acoustic resonator and the first sound guide hole of the acoustic unit can be, thereby increasing the effect of outputting the acoustic signal of the acoustic unit in a wider frequency range. In some embodiments, the ratio of the length of the first hole portion 621 to the length of the side wall on which the first hole portion 621 is located may be less than 0.9. In some embodiments, the ratio of the length of the first hole part 621 to the length of the side wall on which the first hole part 621 is located may be in the range of 0.3-0.8. In some embodiments, the ratio of the length of the first hole part 621 to the length of the side wall on which the first hole part 621 is located may be in the range of 0.4-0.8. In some embodiments, the ratio of the length of the first hole part 621 to the length of the side wall on which the first hole part 621 is located may be in the range of 0.5-0.7.

In some embodiments, the length of the second portion 622 of the opening may be greater than or equal to 1/6 of the length of the side wall on which the second portion 622 of the opening is located. In some embodiments, the ratio of the length of the second hole portion 622 to the length of the sidewall on which the second hole portion 622 is located may be in the range of 0.1-0.8. In some embodiments, the ratio of the length of the second hole portion 622 to the length of the side wall on which the second hole portion 622 is located may be in the range of 1/6-2/3. In some embodiments, the ratio of the length of the second hole portion 622 to the length of the sidewall on which the second hole portion 622 is located may be in the range of 0.2-0.6. In some embodiments, the ratio of the length of the second hole portion 622 to the length of the side wall on which the second hole portion 622 is located may be in the range of 0.3-0.5. In some embodiments, the first hole part 621 and the second hole part 622 may have regular or irregular shapes such as rectangle, circle, triangle, ellipse, and semicircle.

It should be noted that the acoustic unit body 610 may not be limited to the rectangular structure of FIG. 6, and may also be a cylinder, trapezoidal structure, triangular prism, or other regular or irregular shaped structure. In some embodiments, the length of the side wall on which the first hole portion 621 is located may be the same as the length of the side wall on which the second hole portion 622 is located, or the length of the side wall on which the first hole portion 621 is located may be less the length of the side wall on which the second part 622 of the hole is located.

It should be understood that the schematic representation of FIG. 6 is provided for illustrative purposes only and is not intended to limit the scope of the present disclosure. Specialists in the art can make various changes and modifications in accordance with the present invention. All such variations and modifications fall within the protection scope of the present disclosure. In some embodiments, one or more characteristics, such as the shape, size, and position of the originals shown in the figure, can be adjusted according to actual conditions. For example, the length of the first hole portion 621 may be greater than, equal to, or less than the length of the second hole portion 622, or the cross-sectional area of the first hole portion 621 may be greater than, equal to, or less than that of the second hole portion 622.

To further illustrate the acoustic unit, several of the acoustic units shown in FIG. 7 may be used as examples for description. 7 is a schematic diagram illustrating various acoustic units according to some embodiments of the present disclosure.

As shown in FIG. 7(a), the acoustic unit 710 may include a housing 711 and an acoustic transducer 712. In some embodiments, the housing 711 may be a hollow rectangular structure. In other embodiments, the housing 711 may also be a cylinder, a trapezoid, a triangular prism, and other regular or irregular shapes. Acoustic transducer 712 may be configured to convert a signal containing audio information into an audio signal. In some embodiments, acoustic transducer 712 may include a diaphragm and a magnetic circuit structure. The diaphragm and the structure of the magnetic circuit can be connected through the voice coil. The core structure may be connected to the housing 711. The internal magnetic field of the core structure may change in response to a signal containing sound (ie, an electrical signal). The voice coil may vibrate due to the design of the magnetic circuit. The diaphragm may vibrate in response to voice coil vibration. The diaphragm causes the air inside the 711 to vibrate, creating sound waves. In some embodiments, the side of the diaphragm of the acoustic transducer 712 remote from the magnetic circuit structure may be the front surface of the diaphragm, and the other side of the diaphragm of the acoustic transducer 712 may be the rear surface of the diaphragm. The diaphragm can vibrate, emitting sound from the front and back surfaces of the diaphragm, respectively. In some embodiments, the housing 711 and the diaphragm may form a first acoustic resonator 713 for emitting sound, and the housing 711 and the magnetic circuit structure may form a second acoustic resonator 714 for emitting sound. In some embodiments, the acoustic unit 710 may further include a first sound passage 715. The first sound passage 715 may be configured to output sound reproduced from the anterior surface of the diaphragm into the opening of the user's ear canal. The first sound guide hole 715 and the first acoustic resonator 713 may be acoustically coupled. In particular, the first sound guide hole 715 may be located on the side wall of the housing 711 where the first acoustic resonator 713 is located. In some embodiments, the first sound guide hole 715 may include a first hole part 7151 and a second hole part 7152. The first hole part 7151 may be located on different side walls of the housing 711 corresponding to the first acoustic resonator 713. In some embodiments, the length of the side wall on which the first hole part 7151 is located may be greater than the length of the side wall on which the second part is located 7152 openings, that is, the first part 7151 of the opening may be located on the side wall of the body 711 longer, and the second part of the hole 7152 may be located on the side wall of the body 711 shorter. When the acoustic unit 710 is located on a wearable component (eg, wearable component 510 shown in FIG. 5), the first hole part 7151 and the second hole part 7152 may be closer to the opening of the user's ear canal. For example, the first hole portion 7151 and the second hole portion 7152 in FIG. 7(a) may be located at the lower right corner of the housing 711. When the user is wearing a sound reproducing device, the position of the acoustic unit 710 may be located on the front side of the user's ear. In this case, the acoustic unit 710 may be inclined. The first hole portion 7151 may contact other portions (eg, tragus) of the user's ear. In this case, the first opening portion 7151 may not face the opening of the user's ear canal, which affects the listening experience of the user. In order to improve the acoustic signal output effect of the acoustic unit 710, the first sound guide hole 715 can be more facing the opening of the user's ear canal by installing the second hole part 7152 on the other side wall adjacent to the side wall of the housing 711 where the first hole part 7151 is located. . Additional descriptions of the first hole part 7151 and the second hole part 7152 can be found elsewhere in this description (eg, in the description with reference to FIG. 6 and related descriptions), which are not repeated here.

To reduce sound leakage from the acoustic unit 710, in some embodiments, the acoustic unit 710 may further include a second sound port 716. The second sound port 716 may be configured to transmit sound reproduced from the rear surface of the diaphragm to the external environment. In some embodiments, the second sound guide hole 716 may be located on the side wall of the housing 711 corresponding to the second acoustic resonator 714. The second sound guide hole 716 and the second acoustic resonator 714 may be acoustically coupled. In some embodiments, the second sound guide hole 716 and the first sound guide hole 715 may be located opposite each other. In this case, the opposite arrangement can be considered that the orientation of the second sound guide hole 716 and the orientation of the first sound guide hole 715 can be opposite or approximately opposite. For example, the first sound guide hole 715 may be located on the first side wall and the second side wall of the housing 711. The first side wall and the second side wall may be two adjacent side walls of the housing 711. wall. The second opening part 7152 of the first sound guide hole 715 may be located on the second side wall. The first hole part 7151 and the second hole part 7152 can be connected. The first hole part 7151 and the second hole part 7152 may be acoustically coupled to the first acoustic resonator 713. The second sound guide hole 716 may be located on a third side wall opposite the second side wall. The second sound guide hole 716 and the second acoustic resonator 714 may be acoustically coupled. When the user wears the sound reproducing device, the first hole portion 7151 and the second hole portion 7152 of the first sound passage 715 may face the opening of the ear canal of the user, and the second sound passage 716 may face away from the opening of the ear canal of the user. The sound exiting the first sound guide hole 715 and the sound exiting the second sound guide hole 716 may satisfy a certain condition (for example, the phase difference may be about 180°) to form a dipole radiation. In the far field, the sound exiting the first sound guide hole 715 and the sound exiting the second sound guide hole 716 can be suppressed by phase inversion, thereby reducing the sound leakage amount of the far-field acoustic unit 710 and preventing sound output from the acoustic unit 710, that people nearby can hear. When the user wears the sound reproducing device, the distance between the second sound port 715 and the user's ear canal hole may be too small, which may cause sound to be output from the second sound port 715 adjacent to the user's ear hole, and the sound output from the first sound port 715, should be shifted. To provide audible volume at the user's ear canal and reduce the amount of sound leakage in the far field, in some embodiments, the distance between the second sound hole 716 and the user's ear hole may be greater than 1 cm. In addition, if the distance between the first sound hole 715 and the second sound passage hole 716 is too large, or if the distance between the second sound passage hole 716 and the ear canal opening is too large, the size of the sound output device may be too large, which may affect the wearing comfort of the user. To ensure a comfortable wear by the user, in some embodiments, the distance between the second sound port 716 and the user's ear canal can be less than 8 cm. Preferably, the distance between the second sound port 716 and the user's ear canal can be in the range of 1.5 cm to 7 cm Furthermore, it is preferable that the distance between the second sound passage 716 and the user's ear canal can be in the range of 1.5 cm to 5 cm. 2 cm to 4.5 cm. Further, it is preferable that the distance between the second sound passage 716 and the ear canal opening of the user can be in the range of 2.5 cm to 4 cm. the ear canal opening of the user and the effect of reducing sound leakage of the sound generating device in the far field, the ratio of the distance between the second sound passage hole 716 and the user's ear opening to the distance between the first sound passage hole 715 and the user's ear opening can be maximized. In some embodiments, the ratio of the distance between the second sound port 716 and the user's ear canal to the distance between the first sound port 715 and the user's ear canal can be greater than 1.2. In some embodiments, the ratio of the distance between the second sound port 716 and the user's ear canal to the distance between the first sound port 715 and the user's ear canal can range from 1.2 to 8. In some embodiments, the ratio of the distance between the second sound port 716 and the opening of the user's ear canal to the distance between the first sound passage 715 and the opening of the user's ear canal may range from 1.2 to 7. In some embodiments, the ratio of the distance between the second sound passage 716 and the opening of the user's ear canal to the distance between the first sound passage 715 and the opening of the user's ear canal can range from 1.3 to 6. In some embodiments, the ratio of the distance between the second sound hole 716 and the hole of the user's ear canal to the distance between the first sound hole 715 and the hole of the user's ear canal can be in the range of 1.4 to 5. In some embodiments, the ratio of the distance between the second sound passage 716 and the opening of the user's ear canal to the distance between the first sound passage 715 and the opening of the user's ear canal may range from 1.5 to 3. In some embodiments, the ratio the distance between the second sound passage 716 and the user's ear canal to the distance between the first sound passage 715 and the user's ear canal may be in the range of 1.5 to 2.5.

Referring to FIG. 6, in some embodiments, the direction of the dipole radiation formed by the sound output from the first sound hole (including the first hole part 621 and the second hole part 622) and the sound output from the second sound hole allows you to point to the user's ear canal. , by adjusting the included angle θ formed by the connecting line L between the first sound passage hole and the second sound passage hole 630 and the connecting line M between the center of mass O of the diaphragm and the ear canal opening, thereby increasing the audible volume and reducing the volume of sound leakage in the far field when the user wears an acoustic unit. In addition to this, the center of mass O of the diaphragm can be roughly considered the center point of the diaphragm. The process of adjusting the included angle θ can be considered as the rotation of the acoustic unit with the center of mass O of the diaphragm as the center of rotation. The connecting line M between the center of mass O of the diaphragm and the orifice of the user's ear canal can be roughly considered as a straight line with a fixed position. By adjusting (for example, decreasing) the included angle θ, the first opening portion 621 of the first sound opening can be positioned obliquely relative to the user's tragus, and the area of the first opening portion 621 facing the user's tragus can be reduced, thereby reducing the effect of the tragus on the sound output. from the first part 621 holes. In addition, by adjusting the included angle θ, the second hole portion 622 adjacent to the first hole portion 621 can be closer to the ear canal opening of the user, thereby increasing the audible volume of the user. In order to reduce the effect of the user's tragus and ensure that the audible loudness in the user's ear canal is relatively large, in some embodiments, the included angle θ formed by the connecting line L between the first sound guide hole and the second sound guide hole 630 and the connecting line M between the center masses of the diaphragm and the opening of the user's ear canal, may be less than 60°. In order to further reduce the effect of the user's tragus and improve the audible loudness in the user's ear canal, in some embodiments, the angle θ formed by the connecting line L between the first sound guide hole and the second sound guide hole 630 and the connection line M between the center of mass O of the diaphragm and the ear hole the user's passage may be less than 45°. Preferably, the included angle θ formed by the connecting line L between the first sound opening and the second sound opening 630 and the connecting line M between the center of mass O of the diaphragm and the opening of the ear canal of the user is less than 35°. In addition, it is preferable that the angle θ formed by the connecting line L between the first sound opening and the second sound opening 630 and the connecting line M between the center of mass O of the diaphragm and the opening of the ear canal of the user is less than 20°. More preferably, the included angle θ formed by the connecting line L between the first sound opening and the second sound opening 630 and the connecting line M between the center of mass O of the diaphragm and the opening of the ear canal of the user is less than 10°. In some embodiments, the smaller the included angle θ formed by the connecting line L between the first sound opening and the second sound opening 630 and the connecting line M between the center of mass O of the diaphragm and the ear canal opening of the user's diaphragm, the larger the distance difference between the first sound opening may be. and a second sound passage 630 relative to the opening of the user's ear canal. In this case, the smaller the degree of overlap and suppression of the sound passed into the ear canal from the second sound passage 630 and the sound passed into the ear canal from the first sound passage, the greater the volume of the sound that can be heard by the user. In order to further increase the audible volume at the user's ear canal, in some embodiments, the positions and sizes of the first hole portion 621 and the second hole portion 622 in the first sound passage may also be adjusted. Additional descriptions regarding the positions and dimensions of the first hole part 621 and the second hole part 622 can be found elsewhere in this disclosure (eg, in the description with reference to FIG. 6).

It should be noted that the connection line between the first sound guide hole and the second sound guide hole 620 may be a connection line between the geometric centers of the two sound guide holes or a connection line between the geometric center of the equivalent sound guide hole 623 corresponding to the first sound guide hole and the geometric center of the equivalent sound guide hole corresponding to the second sound guide hole. sound guide hole 630. In addition, the diaphragm may be positioned parallel, vertical, or oblique with respect to the contact surface of the acoustic unit and the user's face, and may be adaptively adjusted according to actual application scenarios. Additional descriptions regarding the parameters of the first sound passage, the center of mass of the diaphragm, and the opening of the ear canal can be found elsewhere in this disclosure (eg, in the description with reference to Fig. 4 and related descriptions).

7(b) is a schematic diagram illustrating another acoustic unit according to some embodiments of the present disclosure. The construction of the acoustic unit 720 shown in FIG. 7(b) may be substantially the same as that of the acoustic unit 710 shown in FIG. 7(a). The difference between acoustic unit 720 in FIG. 7(b) and acoustic unit 710 in FIG. and distribution of the second sound guide hole 716 of the acoustic unit 710 in Fig. 7(a). The structures of the housing 721, the acoustic transducer 722, the first acoustic resonator 723, the second acoustic resonator 724, and the first sound guide hole 725 in FIG. resonator 714 and the first sound guide hole 715 in Fig.7(a), which are not repeated in this document. As shown in FIG. 7(b), the second sound guide hole 726 may include a third hole part 7261 and a second hole part 7262. The third aperture portion 7261 and the second aperture portion 7262 may be acoustically coupled to the second acoustic resonator 724 to output sound reproduced from the rear surface of the acoustic unit 720. In some embodiments, the third aperture portion 7261 and the first aperture portion (with reference to the first aperture portion 7151 7(a)) of the first sound guide hole 725 may be located opposite each other. The fourth hole part 7262 and the second hole part (with reference to the second hole part 7152 in FIG. 7(a)) of the first sound guide hole 725 may be located opposite each other. In particular, the third hole portion 7261 may be located on the fourth side wall opposite the first side wall where the first hole portion 725 of the first sound guide hole is located, and the fourth hole portion 7262 may be located on the third side wall opposite the second side wall where the second sound guide hole is located. opening portion of the first sound passage hole 725. When the user wears the sound reproducing device, the first hole portion and the second opening portion of the first sound passage hole 725 may face the ear canal opening of the user, and the third hole portion 7261 and the fourth hole portion 7262 of the second sound passage hole 726 may face away from the opening of the user's ear canal. The sound exiting the first sound guide hole 725 and the sound exiting the second sound guide hole 726 may satisfy a certain condition (eg, the phase difference may be about 180°) to form a dipole radiation. In the far field, the sound exiting the first sound guide hole 725 and the sound exiting the second sound guide hole 726 can be suppressed by phase inversion, thereby reducing the sound leakage amount of the acoustic unit 720 in the far field and preventing the sound output from the acoustic unit 720, that people nearby can hear.

7(c) is a schematic diagram illustrating another acoustic unit according to some embodiments of the present disclosure. The construction of the acoustic unit 730 in FIG. 7(c) may be substantially the same as the acoustic unit 710 in FIG. 7(a). The difference between the acoustic unit 730 in FIG. 7(c) and the acoustic unit 710 in FIG. 7(a) may be that the acoustic unit 730 in FIG. 7(c) may not have a second acoustic resonator. The structures of the housing 731, the acoustic transducer unit 732, the first acoustic resonator 733, and the first sound guide hole 735 in FIG. .7(a), which are not repeated in this document. As shown in FIG. 7(c), the acoustic unit 730 may include a housing 731 and an acoustic transducer unit 732. The structure of the magnetic core of the acoustic transducer unit 732 may include a magnetically conductive cover (not shown in FIG. 7(c)). The conductive cover may face away from the diaphragm, and a portion of the conductive cover may be used as a side wall of the acoustic unit housing. As used herein, it is to be understood that the magnetically conductive cover may be the side wall of the housing 731. In some embodiments, the acoustic unit 730 may include one or more second sound guide holes 736. The second sound guide holes 736 may be located on the magnetically conductive cover. In some embodiments, the shape of the second sound opening 736 may be regular or irregular, such as a circle, semicircle, ellipse, triangle, quadrilateral (eg, rectangle), or pentagon. In some embodiments, when there are multiple second sound holes 736, the shapes of the second sound holes 736 may be the same or different. When the user wears the sound reproducing device, the first opening part and the second opening part of the first sound opening 735 may face the opening of the ear canal of the user, and the second sound passage 736 may face away from the user's face area. In this case, the sound exiting from the first sound passage 735 and the sound exiting the second sound passage 736 may be approximately vertical with respect to the person's face. The sound exiting the first sound passage 735 and the sound exiting the second sound passage 736 may be reflected off a person's face (roughly considered as a screen) and the dipole may become a quadrupole, thereby creating a sound radiation pattern similar to a dipole. Additional descriptions regarding the first sound passage 735 and the second sound passage 736 in the acoustic unit 730, located approximately opposite each other, can be found elsewhere in this disclosure (for example, in the descriptions with reference to Fig.10A, Fig.10B, Fig. 11 and related descriptions).

7(d) is a schematic diagram illustrating another acoustic unit according to some embodiments of the present disclosure. The construction of the acoustic unit 740 in FIG. 7(d) may be substantially the same as that of the acoustic unit 710 in FIG. 7(a). The difference between acoustic unit 740 in FIG. 7(d) and acoustic unit 710 in FIG. and distribution of the second sound guide hole 716 of the acoustic unit 710 in Fig. 7(a). The structures of the housing 741, the acoustic transducer 742, the first acoustic resonator 743, the second acoustic resonator 744, and the first sound guide hole 745 in FIG. resonator 714 and the first sound guide hole 715 in Fig.7(a), which are not repeated in this document. As shown in Fig.7(d), the second sound guide hole 746 may be located on the side wall of the housing 741 opposite the magnetically conductive plate. The second sound port 746 may be acoustically coupled to the second acoustic resonator 744 to output sound reproduced from the rear surface of the acoustic unit 742. When the user wears the sound reproducing device, a portion of the first sound port and a second port portion of the first sound port 745 may face the ear canal opening. of the user, and the second sound guide hole 746 may face away from the user's face area. The sound exiting the first sound opening 745 and the sound exiting the second sound opening 746 may be reflected off a person's face (roughly considered as a screen) and the dipole may become a quadrupole, thereby creating a sound radiation pattern similar to a dipole.

To further illustrate the acoustic output effects of the various acoustic units (eg, acoustic unit 710, acoustic unit 720, and acoustic unit 730) shown in FIG. 7, a specific description is given below with reference to FIG. 8 shows frequency response curves of various acoustic units according to some embodiments of the present disclosure. 8, the solid line (a) may represent the frequency response of the acoustic unit 710 in FIG. 7(a), the dotted line (b) may represent the frequency response curve of the acoustic unit 720 in FIG. (c) may be the frequency response curve of the acoustic unit 730 in FIG. 7(c). As shown in FIG. 8, the three frequency responses may have a resonant peak 810 around 4 kHz. The resonance peak 810 may be mainly caused by the first acoustic resonator (for example, the first acoustic resonator 713, the first acoustic resonator 723 and the first acoustic resonator 733) and the first sound port (for example, the first sound port 715), the first sound port 725 and the first sound port. 735). Since the designs of the first acoustic resonators and the first sound guide holes of the three acoustic units in Fig. 7(a), Fig. 7(b) and Fig. 7(c) are the same, the resonant peaks of the three frequency characteristics near 4 kHz may coincide with each other. . In the acoustic block 710 of FIG. 7(a), due to the design of the second acoustic resonator 714 and the second sound guide hole 716, the corresponding frequency response curve (a) may have a resonant peak 811 of about 2.6 kHz. In the acoustic block 720 of FIG. 7(b), due to the construction of the second acoustic resonator 724 and the second sound guide hole 726, the corresponding frequency response curve (b) may have a resonant peak 812 of about 3.2 kHz. In the acoustic block 730 of FIG. the frequency of the resonant peak 813 may be about 7 kHz. It can be seen from the above that in a certain frequency band (for example, 1000-10000 Hz), when the acoustic unit does not have a second acoustic resonator, the frequency response of the acoustic unit can be flatter and have a better acoustic output effect. In some embodiments, a resonant frequency corresponding to a resonant peak (eg, resonant peak 811 and resonant peak 812) caused by the second acoustic resonator can be improved by reducing the volume of the second acoustic resonator.

In some embodiments, the first sound guide hole and the second sound guide hole may be located opposite each other or approximately opposite each other. When the user wears the sound reproducing device, the connecting line between the center of the first sound passage and the center of the second sound passage may indicate the opening of the user's ear canal. On the one hand, the first sound guide hole and the second sound guide hole may be located opposite each other or approximately opposite each other, and the first sound guide hole may be closer to the opening of the user's ear canal, which can ensure that the acoustic unit can provide the user with a relatively large audible volume. On the other hand, the second sound passage may face away from the user's ear canal opening so that the sound exiting the first sound passage and the sound exiting the second sound passage do not interfere with the position of the user's ear opening. Meanwhile, the sound exiting from the first sound guide hole and the sound exiting from the second sound guide hole can be approximately considered as forming a dipole and can be shifted in the far field. The positional relationship between the first sound guide hole and the user's ear canal hole and the positional relationship between the second sound hole and the user's ear hole will be described below with reference to FIG. 9 as an example.

It should be noted that the foregoing one or more embodiments are for illustrative purposes only and are not intended to limit the design and shape of the acoustic unit. Once the acoustic unit is fully understood, modifications can be made to the acoustic unit to produce an acoustic unit different from the embodiments of the present disclosure. For example, part of the second sound guide hole of the acoustic unit may be located on the corresponding side wall of the second acoustic resonator, and another part of the second sound guide hole of the acoustic unit may be located on the structure of the magnetically conductive cover.

Figure 9 shows the distribution of various acoustic units in the ear, according to some embodiments of the present disclosure. Acoustic blocks in diagrams a, b, c and d in Fig. 9 may correspond to diagrams a, b, c and d in Fig. 7, respectively. As shown in FIG. 9(a), the first sound guide hole 715 may be located in the lower right corner of the acoustic unit 710, and the second sound guide hole 716 may be located in the upper left corner of the acoustic unit 710. When the user wears the acoustic unit 710, the first part The openings 7151 and the second opening part 7152 of the first sound passage 715 may be adjacent to the opening of the user's ear canal, and the second sound passage 716 may face away from the opening of the user's ear canal. The connecting line between the center of the first sound passage 715 and the center of the second sound passage 716 may indicate the opening of the user's ear canal. As used herein, it should be understood that the center of the first sound passage 715, the center of the second sound passage 716, and the opening of the user's ear canal may be substantially in a straight line. It should be noted that the center of the sound guide hole here may be the geometric center of the sound guide hole or the geometric center of the equivalent sound guide hole corresponding to the sound guide hole. For example, in FIG. 9(a), the equivalent sound hole corresponding to the first sound hole 715 can be considered as a connection zone formed by connecting the two ends of the first hole part 7151 and the second hole part 7152 with the greatest distance. The center of the first sound guide hole 715 may be the geometric center of the equivalent sound guide hole corresponding to the first sound guide hole. The second sound guide hole 716 may have a rectangular shape, and the center of the second sound guide hole 716 may be the geometric center of the rectangle. As another example in FIG. 9(b), the center of the first sound guide hole 725 may be the geometric center of the equivalent sound guide hole corresponding to the first sound guide hole. The second sound guide hole 726 may include a third hole part and a fourth hole part. The equivalent sound guide hole corresponding to the second sound guide hole 726 can be considered as a connection zone formed by connecting the two ends of the third hole part and the fourth hole part with the largest distance. The center of the second sound hole 726 may be the center of an equivalent sound hole corresponding to the second sound hole. As another example in FIG. 9(c), the center of the first sound hole 735 may be the center of the equivalent sound hole corresponding to the first sound hole. The second sound guide hole 736 may include a plurality of additional sound guide holes, and the center of the second sound guide hole 736 may be the geometric center of the plurality of additional sound guide holes. As another example in FIG. 9(d), the center of the first sound hole 745 may be the center of the equivalent sound hole corresponding to the first sound hole. The center of the second sound guide hole 746 may be the geometric center of the second sound guide hole 746.

FIG. 10A shows the radiation pattern of the acoustic unit when the first sound guide hole and the second sound guide hole of the acoustic unit shown in FIG. 7(b) are opposite each other according to some embodiments of the present disclosure. As shown in FIG. 10A, the radiation pattern may approximately have an "8" shape, where the direction of the shape 8 main lobe may correspond to the direction of the connecting line shown in FIG. 9(b) (see dashed line in FIG. 10A). The darker the color, the higher the sound pressure level can be. When the user wears the sound reproducing device, the human ear may be in the main lobe region (for example, in the main lobe region 1010 or in the main lobe region 1020) in the form 8. The sound pressure level of the sound heard by the user's ear may be the highest, while how the sound pressure level of the sound vertical to the direction of the main lobe can be relatively small. The space vertical to the direction of the main lobe can be faced to the outside, which can effectively reduce the sound leakage in the space and provide a certain degree of privacy.

FIG. 10B shows the radiation pattern of the acoustic unit without the second acoustic resonator shown in FIG. 7(c). The radiation pattern shown in FIG. 10B may be substantially the same as the radiation pattern shown in FIG. 10A. It can be seen that the first sound guide hole 735 and the second sound guide hole 736 in FIG. However, due to the presence of a limiting condition (eg, a human face), the sound exiting the first sound passage 735 and the sound exiting the second sound passage 736 can be considered acoustically approximately opposite.

To facilitate understanding of the limiting condition, it is described in conjunction with Fig.11. FIG. 11 is a schematic diagram illustrating the principle of dipole reflection from a face according to some embodiments of the present disclosure. As shown in FIG. 11, when the user is wearing the audio device, the first sound guide hole of the acoustic unit may face the ear canal opening of the user, and the second sound guide hole may face away from the user's face. Sound exiting the first sound guide hole may be a sound wave 1110 and sound exiting the second sound guide hole may be a sound wave 1120. Sound wave 1110 and sound wave 1120 may form a dipole radiation. The sound radiated to the external environment by the sound wave 1110 and the sound wave 1120 may be directed approximately vertically towards the person's face. Sound wave 1110 and sound wave 1120 may be reflected from the user's face to form sound wave 1130 and sound wave 1140, which are symmetrical to sound waves 1110 and sound waves 1120. The dipole formed by sound wave 1110 and sound wave 1120 may become a quadrupole, thereby creating sound radiation pattern similar to that of a dipole.

In order to ensure that the acoustic emission at the first sound guide hole and the acoustic emission at the second sound guide hole are substantially the same to form the aforementioned 8-shaped dipole, in some embodiments, the ratio of the difference between the effective area of the second sound guide hole and the effective area of the first sound guide hole and the effective the area of the first sound guide hole or the effective area of the second sound guide hole may be less than or equal to 40%. In some embodiments, the ratio of the difference between the effective area of the second sound guide hole and the effective area of the first sound guide hole to the effective area of the first sound guide hole or the effective area of the second sound guide hole may be less than or equal to 30%. In some embodiments, the ratio of the difference between the effective area of the second sound guide hole and the effective area of the first sound guide hole to the effective area of the first sound guide hole or the effective area of the second sound guide hole may be less than or equal to 20%. In some embodiments, the ratio of the difference between the effective area of the second sound guide hole and the effective area of the first sound guide hole to the effective area of the first sound guide hole or the effective area of the second sound guide hole may be less than or equal to 20%. In some embodiments, the effective area of the second sound guide hole and the effective area of the first sound guide hole may be equal. As used herein, the term "effective sound guide area" can mean the product of the actual area of the sound guide hole and the porosity of the acoustic impedance mesh covering the sound guide hole, that is, the area through which air can pass through the hole. For example, when the exit end of the sound guide hole is covered with an acoustic impedance mesh, the effective area of the sound guide hole may be equal to the product of the actual area of the sound guide hole and the porosity of the closed acoustic impedance mesh. As another example, when the exit end of the pressure relief hole is not covered by the acoustic impedance mesh, the effective sound guide area may be the actual sound guide area.

12 is a schematic diagram illustrating a sound reproducing device according to some embodiments of the present disclosure. As shown in FIG. 12, the audio device may include a wearable component 1210 and an acoustic unit 1220. The acoustic unit 1220 may have a rectangular design. The relatively short side of the acoustic unit 1220 may be connected to the wearable component 1210, and the relatively long side of the acoustic unit 1220 may be connected to the wearable component 1210 at an angle, so that the first sound guide hole in the bottom right corner of the acoustic unit may be closer to the opening. the user's ear canal, and the second sound guide hole in the upper left corner of the acoustic unit 1220 may face away from the ear canal hole. Acoustic unit 1220 and wearable component 1210 may be angled. When the user is wearing the audio device, the first sound port of the acoustic unit 1220 may be closer to the user's ear canal. In some embodiments, the included angle θ between the relatively long side of the acoustic unit 1220 and the wearable component 1210 may be 5°-85°. In some embodiments, the included angle θ may be 10°-70°. In some embodiments, the included angle θ may be 15°-60°. In some embodiments, the included angle θ may be 20°-45°. In some embodiments, the included angle θ may be 30°-90°. In some embodiments, the acoustic unit and the wearable component may be a single structure, and the acoustic unit may be located in the wearable component 1210. FIG. 13 is a schematic diagram illustrating a wearable component according to some embodiments of the present disclosure. 14A and 14B are schematic representations illustrating the wearable component (FIG. 13) from different angles of view. Referring to FIG. 13, FIG. 14A and FIG. 14B, the wearable component 1300 may be provided with a concave segment 1320 and a connecting segment 1310 connected to the concave segment 1320. The concave segment 1320 may cause the top edge of the wearable component 1300 to drop down on the wearable component 1300 In this embodiment, since the concave segment 1320 is complex, the flexibility of the concave segment 1320 can be increased. Wearable component 1300 can adaptively deform according to the shape of the user's head due to the presence of a concave segment 1320, which makes it easier for the user to wear the wearable component 1300. In some embodiments, the implementation of the concave segment 1320 may have an acoustic unit (not shown in Fig.13). The concave segment 1320 may be used to position the acoustic unit and bring the acoustic unit close to the user's ear. The connector segment 1310 may be used to connect the concave segment 1320 to the visual component of the audio device and be installed on the user's ear. The concave segment 1320 may be connected to the connecting segment 1310 by a physical connection, such as a connection, insertion, welding, riveting, screw connection, snap connection, etc.

In some embodiments, the concave segment 1320 may assist in positioning the acoustic unit in front of the user's ear. As used herein, the term "in front of the ear" may refer to the side of the user's ear facing the user's face. For example, when the user is wearing a sound reproducing device, the concave segment 1320 may be located on the side of the ear facing the user's eyes, so the acoustic unit located on the concave segment 1320 may be closer to the opening of the user's ear canal, and the sound signal emitted by the acoustic unit, can be more easily transmitted to the user's ear.

In some embodiments, the implementation of the concave segment 1320 may have any possible shape. The shape of the concave segment 1320 can be considered as the shape of the design of the concave segment 1320 or the concave shape of the concave segment 1320. Examples of shapes of the concave segment 20 may include, but are not limited to, a Y-shape, a V-shape, and a folded shape. Several exemplary concave segments will be described below.

The concave segment 1320 may include a transition portion 1321 and a mounting portion 1322 connected at an angle. The acoustic unit may be located in the mounting portion 1322. When the user wears the wearable component, the transition portion 1321 and the connecting segment 1310 may be curved and connected and continue down so as to continue towards the opening of the user's ear canal to reduce the distance between located in it acoustic block and ear canal opening. The transition portion 1321 may refer to the portion of the concave segment 1320 that is closer to the visual component. Mounting portion 1322 may refer to the portion of the concave segment 1320 that is closer to the user's ear. In some embodiments, the implementation of the transition part 1321 and the mounting part 1322 may have different shapes or the same shape. The mounting part 1322 and the transition part 1321 of the concave segment 1320 can be connected at any angle, thereby forming a concave segment 1320 of various shapes. In this case, the connection between the mounting portion 1322 and the transition portion 1321 of the concave segment 1320 at any angle may mean that the included angle formed after the connection of the mounting portion 1322 and the transition portion 1321 may be any angle. In some embodiments, the included angle formed between the mounting portion 1322 and the transition portion 1321 may be in the range of 15-150 degrees. In some embodiments, the included angle formed between the mounting portion 1322 and the transition portion 1321 may be in the range of 30-150 degrees. In some embodiments, the included angle formed between the mounting portion 1322 and the transition portion 1321 may be in the range of 45-150 degrees. In some embodiments, the included angle formed between the mounting portion 1322 and the transition portion 1321 may be in the range of 60-150 degrees. In some embodiments, the included angle formed between the mounting portion 1322 and the transition portion 1321 may be in the range of 75-90 degrees. For example, the included angle formed between the mounting portion 1322 and the transition portion 1321 may be 30 degrees, 60 degrees, 90 degrees, or 120 degrees.

In some embodiments, the mounting portion 1322 and the transition portion 1321 may be connected in a releasable manner, such as by a threaded connection or a plug connection. In some embodiments, the connection segment 1310 and the concave segment 1320 may be rigidly connected. For example, the connecting segment 1310 and the concave segment 1320 may be connected by welding, riveting, gluing, etc. In some embodiments, the implementation of the mounting part 1322 and the transition part 1321 may also be connected directly or connected through the adjustment structure. The adjusting structure may be a loop, a spherical loop or a telescopic rod, etc. The adjustment structure may allow rotation or translation of the mounting portion 1322 relative to the transition portion 1321. In some embodiments, the implementation of the mounting portion 1322 and the transition portion 1321 may also be an integrated structure.

As an exemplary illustration, in some embodiments, the implementation of the concave segment 1320 may be V-shaped, that is, the concave formed by the mounting portion 1322 and the transition portion 1321 may be V-shaped. One end of the mounting portion 1322 may be connected to a portion (eg, the first connecting segment 1312) of the connecting segment 1310 remote from the visual component, and the other end of the mounting portion 1322 may extend downward. The included angle formed between the mounting portion 1322 and the connecting segment 1310 may be approximately 90 degrees. One end of the transition 1321 may be connected to a portion (e.g., the second connection segment 1311) of the connection segment 1310 adjacent to the visual component, and the other end of the transition 1321 may extend towards the user's tragus and be angled relative to the connection segment 1310. part 1322 and transition part 1321 may be connected to form a downward V-shaped recess.

It should be noted that the foregoing one or more embodiments are for illustrative purposes only and are not intended to limit the shape or number of concave segments 1320. After fully understanding the operation of the concave segment 1320, changes can be made to the concave segment 1320 to obtain a concave segment 1320, different from the segment presented in the embodiment of the present disclosure. For example, the shapes of the mounting portion 1322 and the transition portion 1321 can be adjusted such that the shape of the concave segment 1320 formed by the mounting portion 1322 and the transition portion 1321 can be U-shaped. In some embodiments, the wearable component 1300 may include a plurality of concave segments 1320 of various shapes. For example, wearable component 1300 may include two concave segments 1320. One of the two concave segments 1320 may be V-shaped, and the other concave segment 1320 may be Y-shaped.

In some embodiments, the connection segment 1310 may include a first connection segment 1312 and a second connection segment 1311. A concave segment 1320 may be connected between the first connection segment 1312 and the second connection segment 1311. The first connection segment 1312 may be used for earlobe placement. The second connection segment 1311 may be used to connect the visual component. In some embodiments, the implementation of the second connecting segment 1311 may be connected to one end of the mounting portion 1322 and continue away from the first connecting segment 1312 in the form of a straight strip. The concave segment 1320 may extend downward relative to the first connection segment 1312 and the second connection segment 1311, forming a convex shape and recess with respect to the first connection segment 1312 and the second connection segment 1311.

In some application scenarios, when the wearable component 1300 is mounted on the user's ear, the concave segment 1320 may be located on the side of the pinna facing the user's eyes, so that when the wearer is wearing the wearable, the concave segment 1320 may continue towards the tragus, and the acoustic unit located in the concave segment 1320 may be positioned closer to the tragus to be closer to the user's external auditory canal, thereby reducing the distance between the acoustic unit and the user's ear and making it easier to transmit sound to the user.

In some embodiments, an acoustic unit (not shown in the figure) may be located within the mounting portion 1322. The mounting portion 1322 may be a hollow hull structure. Mounting part 1322 can be used as a housing for an acoustic unit. In some embodiments, the implementation of the diaphragm and the structure of the magnetic circuit of the acoustic unit can be connected through the voice coil. The core structure may be coupled to the mounting portion 1322. The side of the diaphragm facing away from the core structure may be the front surface of the diaphragm, and the other side of the diaphragm may be the rear surface of the diaphragm. The diaphragm may vibrate, radiating sound outward from the front surface and back surface of the diaphragm, respectively. In some embodiments, the mounting portion 1322 and the diaphragm may form a first acoustic resonator for emitting sound. The first acoustic resonator and the first sound guide hole 1330 may be acoustically coupled. The first sound guide hole 1330 may be located on different side walls of the mounting portion 1300 corresponding to the first acoustic resonator. In addition, the first sound guide hole 1330 may be located on the side wall of the mounting portion 1322 away from the transition portion 1321. When the user wears the sound reproducing device, the first sound guide hole 1330 may be adjacent to the user's ear canal opening. In some embodiments, the first sound guide hole 1330 may include a first hole part 1331 and a second hole part 1332. The first hole part 1331 may be located on the side wall of the mounting part 1322 away from the transition part 1321, and the second hole part 1332 can be located on the lower side wall of the mounting part 1322. The first hole part 1331 and the second hole part 1332 can be connected.

In some embodiments, the acoustic unit may further include a second sound port 1340. The second sound port 1340 may be used to transmit sound reproduced from the rear surface of the acoustic unit to the external environment. The second sound guide hole 1340 may be located on different side walls of the mounting portion 1322 corresponding to the second acoustic resonator. The second sound guide hole 1340 and the second acoustic resonator may be acoustically coupled. In some embodiments, the second sound guide hole 1340 and the first sound guide hole 1330 may be located opposite each other. As used herein, the opposite arrangement can be considered to mean that the orientation of the second sound guide hole 1340 and the orientation of the first sound guide hole 1330 can be opposite or approximately opposite. The second sound guide hole may include a third hole part 1341 and a fourth hole part 1342. The third hole portion 1341 may be located on the side wall of the mounting portion 1322 next to the transition portion 1321, and the fourth hole portion may be located at the top of the mounting portion 1322. the holes 1330 may face the opening of the user's ear canal, and the third hole portion 1341 and the fourth hole portion 1342 of the second sound passage 1340 may face away from the user's ear hole. The sound exiting the first sound passage 1330 and the sound exiting the second sound passage 1340 may satisfy a certain condition (eg, the phase difference may be about 180°) to form a dipole radiation. In the far field, the sound exiting from the first sound guide hole 1330 and the sound exiting from the second sound guide hole 1340 can be suppressed by phase inversion, thereby reducing the sound leakage amount of the acoustic unit in the far field and preventing sound output from the acoustic unit, which people nearby can hear.

It should be noted that the foregoing one or more embodiments are for illustrative purposes only and are not intended to limit the positions of the first sound passage 1330 and the second sound passage 1340. into the first sound guide hole 1330 and the second sound guide hole 1340 in order to obtain the first sound guide hole 1330 and the second sound guide hole 1340, different from the embodiments of the present disclosure. For example, the first sound port 1330 or the second sound port 1340 can be located on the side wall of the mounting portion 1322 by adjusting the positions of the first sound port 1330 and the second sound port 1340. Additional descriptions of the first sound port 1330 and the second sound port 1340 can be found elsewhere herein. disclosure (for example, in the description with reference to Fig. 7(b) and its corresponding descriptions).

15 is a schematic diagram illustrating a wearable component according to some embodiments of the present disclosure. The overall design of the wearable component 1500 shown in FIG. 15 may be substantially the same as the overall design of the wearable component 1300 shown in FIGS. 13, 14A, and 14B. The difference between the wearable component 1500 and the wearable component 1300 may be that the position of the second sound guide hole 1540 of the wearable component 1500 in FIG. 15 may be different from the position of the second sound guide hole 1340 of the wearable component 1300. part 1521, the mounting part 1522, the first sound guide hole 1530, the first hole part 1531 and the second sound guide hole 1532 shown in Fig. 15 may be respectively the same as the first connecting segment 1312, the second connecting segment 1311, the transition part 1321, the mounting part 1322, the first sound guide hole 1330, the first hole part 1331 and the second hole part 1332, which are shown in Fig. 14A and Fig. 14B. The design of the magnetic core of the acoustic unit may include a magnetically conductive cover (not shown in Fig. 15). The magnetically conductive cover may be spaced away from the diaphragm, and a portion of the magnetically conductive cover may be used as a side wall of the mounting portion 1522. It will be understood herein that the magnetically conductive cover may be the side wall of the mounting portion 1522. In some embodiments, the mounting portion 1522 may include one or more second sound guide holes 1540. The second sound guide holes 1540 may be located on the magnetically conductive cover. In this case, the first sound guide hole 1530 and the second sound guide hole 1540 in the acoustic unit may be approximately opposite. When a user wears a sound reproducing device, the first sound passage 1530 may face the user's ear canal and the second sound passage 1540 may face away from the user's face. It should be noted that the number of the second sound guide holes 1540 may not be limited to two (FIG. 15), but may also be one, three, or four, etc. Additional descriptions of the first sound hole 1530 and the second sound hole 1540 can be found elsewhere in this disclosure (eg, in the description with reference to Fig.7(c) and related descriptions).

16 is a schematic diagram illustrating another wearable component according to some embodiments of the present disclosure. The wearable component 1600 in FIG. 16 may be substantially the same as the wearable component 1300 in FIG. 13, FIG. 14A, and FIG. 14B. The difference may be that the position of the second sound guide hole 1640 of the wearable component 1600 in FIG. 16 may be different. The first connecting segment 1612, the second connecting segment 1611, the transition part 1621, the mounting part 1622, the first sound guide hole 1630, the first hole part 1631 and the second hole part 1632 shown in Fig. 16 may be respectively similar to the first connecting segment 1312, the second connecting segment 1311, the transition part 1321, the mounting part 1322, the first sound guide hole 1330, the first hole part 1331 and the second hole part 1332, which are shown in Fig.14A and Fig.14B. As shown in FIG. 16, the second sound guide hole 1640 may be located on the side wall of the mounting portion 1622 corresponding to the second acoustic resonator. When a user wears a sound reproducing device, the first sound passage 1630 may face the user's ear canal and the second sound passage 1640 may face away from the user's face. Additional descriptions of the first sound passage 1630 and the second sound passage 1640 can be found elsewhere in this disclosure (eg, in the description with reference to FIG. 7(d) and related descriptions).

It should be understood that the schematic representations of Fig. 15 and Fig. 16 are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Those skilled in the art may make various changes and modifications in accordance with the present disclosure. All such variations and modifications fall within the protection scope of the present disclosure. In some embodiments, one or more characteristics, such as the shape, size, and position of each of the elements in the figure, may be adjusted according to actual conditions.

In some embodiments, the resonant frequency corresponding to the formant of the acoustic unit can be reduced by reducing the volume of the second acoustic resonator, thereby improving the acoustic output effect of the acoustic unit. The shape or volume of the second acoustic resonator of the acoustic unit may be related to the location of the components (eg, diaphragm and magnetic core structure) of the acoustic transducer in the housing. For example, the second acoustic resonator may be formed between the diaphragm and the housing, and the greater the distance between the diaphragm and the side wall of the housing facing the diaphragm, the larger the volume of the second acoustic resonator may be. In some embodiments, the volume of the second acoustic resonator can be reduced by reducing the distance between the diaphragm and the housing. In some embodiments, the volume of the second acoustic resonator can also be reduced by adjusting the housing design.

17 is a schematic diagram illustrating various acoustic units according to some embodiments of the present disclosure. As shown in FIG. 17(a), the acoustic unit 1710 may include a housing 1711 and an acoustic transducer 1712. In some embodiments, the housing 1711 may be a hollow rectangular structure. The housing 1711 may include a convex portion 17111 that protrudes outward from a sidewall on the side of the housing. Acoustic transducer 1712 may be configured to convert a signal containing audio information into an audio signal. In some embodiments, acoustic transducer 1712 may include a diaphragm and a magnetic circuit structure. The diaphragm and the structure of the magnetic circuit can be connected through the voice coil. The core structure may be connected to the housing 1711. The internal magnetic field of the core structure may change in response to a signal containing sound (eg, an electrical signal). The voice coil may vibrate due to the design of the magnetic circuit. The diaphragm may vibrate in response to voice coil vibration. The diaphragm may vibrate the air within the housing 1711, creating sound waves. In some embodiments, the side of the diaphragm of the acoustic transducer 1712 facing away from the magnetic circuit structure may be the front surface of the diaphragm, and the other side of the diaphragm may be the rear surface of the diaphragm. The diaphragm can vibrate, emitting sound from the front and back surfaces of the diaphragm, respectively. In some embodiments, the housing 1711 and the front surface of the diaphragm may form a first acoustic resonator 1713 for emitting sound. The conductive cover of the magnetic circuit structure may be used as a complete sidewall or as part of the sidewall of the housing 1711 where the convex portion 17111 is located. The convex portion 17111 may protrude outward from the magnetically conductive cover. A second acoustic resonator 1714 may be formed between the back surface of the diaphragm and the convex portion 17111. In some embodiments, the acoustic unit 1710 may further include a first sound guide hole 1715. The first sound guide hole 1715 can be used to output sound emitted by the front surface of the diaphragm in a direction to the opening of the user's ear canal. The first sound guide hole 1715 and the first acoustic resonator 1713 may be acoustically coupled. In particular, the first sound guide hole 1715 may be located on the side wall of the housing 1711 where the first acoustic resonator 1713 is located. sound guide hole 1716 can be used to transmit sound reproduced from the rear surface of the diaphragm to the external environment. In some embodiments, the second sound guide hole 1716 may be located on the magnetically conductive cover. The second sound guide hole 1716 on the magnetically conductive cover can directly output the sound reproduced on the back surface of the diaphragm. In some embodiments, the second sound guide hole 1716 may also be located on the side wall of the convex portion 17111 corresponding to the second acoustic resonator 1714. The sound reproduced on the back surface of the diaphragm may be transmitted to the second acoustic resonator 1714 through the hole (not shown in Fig.17) on the magnetically conductive cover, and then transmitted to the external environment through the second sound guide hole 1716 located on the convex part 17111. In some embodiments, the shape and number of the second sound guide holes on the magnetically conductive cover, and the shape and number of the second sound guide holes on the convex part 17111 may be the same . In some embodiments, the shape of the second sound opening 1716 may be a rectangle, circle, semicircle, ellipse, pentagon, triangle, or other regular or irregular shapes. In some embodiments, the shape and number of the second sound guide holes on the magnetically conductive cover and the shape and number of the second sound guide holes on the convex portion may also be different. For example, in FIG. 17(b), the second sound guide hole 1726 on the magnetically conductive cover may be a rectangle, and the shape of the second sound guide hole 1726 on the convex portion may be a triangle. In some embodiments, the orientation of the second sound passage on the magnetic cap and the orientation of the second sound passage on the convex portion may be the same or different. For example, in Fig.17(a) and Fig.17(b), when the side walls of the magnetically conductive cover and the convex part, where the second sound guide holes are located opposite the diaphragm of the acoustic transducer unit, the orientation of the second sound guide hole on the magnetically conductive cover and the orientation of the second sound guide holes on the convex part may be the same. As another example in FIG. 17(c), the orientation of the second sound guide hole 1736 on the magnetically conductive cover and the orientation of the second sound guide hole 1736 on the convex portion may be different. It should be noted that the second sound guide holes (e.g., the second sound guide hole 1716, the second sound guide hole 1726, and the second sound guide hole 1736) in the above embodiments are for illustrative purposes only, and the position, number, size, shape, etc. of each of the second sound holes can be adjusted according to actual application scenarios, provided that the first sound hole and the second sound hole can be placed opposite each other, or the sound coming out of the first sound hole and the sound coming out of the second sound hole , may be approximately opposite, which is within the protection scope of the present disclosure.

It should be noted that different embodiments may have different beneficial effects. In various embodiments, the possible beneficial effects may be any one or combination thereof, or any other possible beneficial effects.

Thus, after describing the basic concepts to those skilled in the art upon reading this detailed disclosure, it may be apparent that the foregoing detailed disclosure is intended to be by way of example only and is not limiting. Various modifications, improvements, and amendments to the present disclosure may be made by those skilled in the art, although this is not expressly stated in this document. These changes, improvements and modifications are intended to be offered by the present disclosure and are within the spirit and scope of the illustrative embodiments of the present disclosure.

Moreover, certain terminology has been used to describe embodiments of the present disclosure. For example, the terms "one embodiment," "an embodiment," and/or "some embodiments" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present disclosure. Thus, it should be emphasized that two or more references to "an embodiment" or "one embodiment" or "alternative embodiment" in various parts of this specification do not necessarily all refer to the same embodiment. In addition, certain features, constructions, or features in the present disclosure of one or more embodiments may be combined as appropriate. Features of one or more embodiments of the present disclosure may be combined as appropriate.

Moreover, the order of processing elements or sequences given, or the use of numbers, letters, or other designations, is therefore not intended to limit the claimed processes and methods in any order other than that which may be indicated in the claims. Although the above disclosure discusses what is now considered to be a variety of useful embodiments of the invention by various examples, it should be understood that such details are for that purpose only, and that the appended claims are not limited to the disclosed embodiments, but rather are intended to covering modifications and equivalent devices that are within the spirit and scope of the disclosed embodiments. For example, while the implementation of the various components described above may be implemented in a hardware device, it may also be implemented as a pure software solution, such as installation on an existing server or mobile device.

Likewise, it should be understood that in the above description of embodiments of the present disclosure, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of simplifying the disclosure to aid in understanding one or more of the various embodiments. However, the present disclosure does not mean that the subject matter of the present disclosure requires more features than the features mentioned in the claims. Rather, the claimed subject matter may consist of more than just all of the features of one embodiment disclosed above.

In some embodiments, numbers are used to describe the amount of ingredients and attributes. It should be understood that such numbers used to describe embodiments use the term "about", "approximately", or "substantially" in some instances. Unless otherwise indicated, the term "about", "approximately" or "substantially" means that the number may vary within ±20%. Accordingly, in some embodiments, the implementation of the numerical parameters used in the description and claims are approximate values, and approximate values can be changed in accordance with the required characteristics of individual embodiments. In some embodiments, the implementation of the numerical parameters must take into account the given effective digits and use the way to save the overall digit. Although the numerical ranges and parameters used to confirm the width of a range of values in some embodiments of the present disclosure are approximate values, in particular embodiments, the settings for such numerical values are as accurate as possible within the allowable range of values.

With respect to each patent, patent application, publication of a patent application, or other materials such as articles, books, specifications, publications, documents, and the like, cited in this disclosure, their contents are incorporated in this disclosure in their entirety as links. Documents relating to the background of this application that are inconsistent or conflicting with the contents of this disclosure are excluded, and documents (now or later appended to this disclosure) that limit the broadest scope of the claims of this disclosure are also excluded. It should be noted that in the event of any inconsistencies or conflicts between the description, definition and/or use of terms in the supporting materials of this disclosure and the contents of this disclosure, the description, definition and/or use of terms in this disclosure shall be the subject of this disclosure.

Finally, it should be understood that the embodiments described in the present disclosure are merely illustrative of the principles of the embodiments of the present disclosure. Other modifications that may be used may be within the scope of this disclosure. Thus, by way of example, and not limitation, alternative configurations of embodiments of the present disclosure may be used in accordance with the teachings herein. Accordingly, embodiments of the present disclosure are not limited to what is shown and described.

Claims (13)

1. Sound reproducing device, containing: diaphragm; And a body, the body including a first sound guide hole and a second sound guide hole, the diaphragm is disposed in the body, and the first sound guide hole and the second sound guide hole are located respectively on both sides of the diaphragm; when the user wears the sound reproducing device, the distance between the first sound opening and the user's ear canal opening is smaller than the distance between the diaphragm and the user's ear canal opening, the included angle between the connecting line between the first sound opening and the second sound opening and the connecting line between the center of mass of the diaphragm and the opening of the user's ear canal is less than 45°, and the distance between the second sound passage and the user's ear canal is greater than the distance between the diaphragm and the user's ear canal. 2. Sound reproducing device according to claim 1, in which the distance between the first sound guide hole and the opening of the user's ear canal is 0.5-2.5 cm. 3. The sound reproducing device according to claim 1, in which the distance between the second sound guide hole and the opening of the user's ear canal is 1.5-5 cm. 4. Sound reproducing device according to claim 1, in which the distance between the diaphragm and the opening of the user's ear canal is 1.5-3 cm. 5. Sound reproducing device according to claim 1, in which the ratio of the distance between the diaphragm and the opening of the user's ear canal to the distance between the first sound hole and the hole of the user's ear canal is 1.4-3. 6. The sound reproducing device according to claim 1, wherein the ratio of the distance between the second sound guide hole and the user's ear canal hole to the distance between the first sound hole and the user's ear hole is 1.4-5. 7. Sound reproducing device according to claim 1, in which the housing and the diaphragm form a first acoustic resonator for emitting sound, and the first acoustic resonator and the first sound guide hole are acoustically connected, and the first sound guide hole includes the first part of the hole and the second part of the hole, and the first the hole part and the second hole part are connected, and the first hole part and the second hole part are located on different side walls of the housing corresponding to the first acoustic resonator. 8. The sound reproducing device according to claim 1, further comprising a magnetic circuit structure, wherein the magnetic circuit structure is connected to the housing, the diaphragm is connected to the magnetic circuit structure through a voice coil, the housing and the magnetic circuit structure form a second acoustic resonator for sound emission, a second acoustic resonator and a second sound guide hole acoustically connected, and the second sound guide hole is located on the side wall corresponding to the second acoustic resonator. 9. The sound reproducing device according to claim 1, wherein the ratio of the difference between the effective area of the second sound guide hole and the effective area of the first sound guide hole to the effective area of the first sound guide hole or the effective area of the second sound guide hole is less than or equal to 40%. 10. Sound reproducing device according to any one of paragraphs. 1-9, containing a wearable component, and the wearable component includes a connecting segment and a concave segment connected to the connecting segment, and the concave segment forms a downward deflection at the upper edge of the wearable component, and the concave segment is made so that the concave segment is located adjacent to the user's ear when the user is wearing the wearable component, and the concave segment allows the first sound guide hole to be located near the user's ear, and the housing is connected to the concave segment.