CN115550803A - Loudspeaker assembly and mobile terminal - Google Patents

Abstract

The present disclosure relates to a speaker assembly and a mobile terminal, wherein the speaker assembly includes: applied to a mobile terminal, the speaker assembly includes: the loudspeaker is arranged inside the mobile terminal; the sound gathering device comprises a first end and a second end which are connected, the second end comprises a plurality of sound channels, the first end of the sound gathering device is connected with a sound outlet of the loudspeaker, and the second end is communicated with the outside of the mobile terminal; the loudspeaker emits sound from the sound outlet, and the sound is emitted to the outside of the mobile terminal through the plurality of sound channels; wherein the path lengths in the plurality of sound channels are not exactly the same, the sound channel inner walls being rigid rods. The mode of combining a plurality of loudspeakers is not needed, acoustic focusing is realized through the acoustic metamaterial, the arrangement of elements in the mobile terminal is reduced, the space in the mobile terminal is saved, and the mobile terminal is simple to install, easy to operate and easy to realize.

Description

Loudspeaker assembly and mobile terminal

Technical Field

The present disclosure relates to the field of electronic products, and more particularly, to a speaker assembly and a mobile terminal.

Background

People can use mobile terminals such as mobile phones and computers in various scenes of life, for example, people can watch videos and make calls through a tablet personal computer or a mobile phone on a subway; when mobile terminals such as mobile phones and computers are used in some public places, the mobile terminals have no directivity when the sound is emitted, that is, people around the mobile terminals can hear the sound emitted by the mobile phones and computers, so that the privacy of users is lost.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a speaker assembly and a mobile terminal.

According to a first aspect of embodiments of the present disclosure, there is provided a speaker assembly, wherein the speaker assembly may include: applied to a mobile terminal, the speaker assembly includes: the loudspeaker is arranged inside the mobile terminal; the sound gathering device comprises a first end and a second end which are connected, the second end comprises a plurality of sound channels, the first end of the sound gathering device is connected with the sound outlet of the loudspeaker, and the second end is communicated with the outside of the mobile terminal; the loudspeaker emits sound from the sound outlet, and the sound passes through the plurality of sound channels and is emitted to the outside of the mobile terminal; wherein the path lengths in the plurality of sound channels are not exactly the same, and the sound channel inner walls are rigid rods.

According to some embodiments of the present disclosure, an end of the plurality of sound channels, which communicates with an outside of the mobile terminal, is divided into a first portion through which the sound passes to be focused on the first area and a second portion through which the sound passes to be focused on the second area.

According to some embodiments of the present disclosure, a plurality of isolating switches are disposed inside the plurality of sound channels, and the plurality of isolating switches may be respectively used to control the plurality of sound channels to be turned on or off.

According to some embodiments of the present disclosure, the speaker and the plurality of sound channels may be moved towards or away from each other.

According to some embodiments of the present disclosure, the path lengths of the plurality of sound channels decrease from a central position near the sound outlet to the periphery.

According to some embodiments of the present disclosure, the opening direction of the other ends of the plurality of sound passages is directed toward the direction of the center of the sound collecting device.

According to some embodiments of the present disclosure, the sound collecting device may further include a connection end disposed at the first end of the sound collecting device, and a first end of the connection end is open and communicates with the sound outlet; a second end of the connecting end connects the plurality of sound channels.

According to some embodiments of the disclosure, the connecting end is tapered, and a cross-sectional area of the first end is smaller than a cross-sectional area of the second end.

According to some embodiments of the present disclosure, the sound collecting apparatus may include: the acoustic labyrinth is formed with a plurality of bent acoustic channels, and one end of each bent acoustic channel is connected with the second end of the connecting end; the other end of the sound channel is communicated with the outside of the mobile terminal to form a plurality of sound channels; the sound labyrinth is made of rigid rods, or a first reflecting layer made of rigid rods is formed on the inner wall of the bent sound channel.

According to some embodiments of the present disclosure, the sound labyrinth has a size corresponding to the sound outlet and is adhered to the inside of the sound outlet by an adhering method.

According to some embodiments of the present disclosure, the second end of the connecting end is provided with a plurality of connecting holes; the sound gathering device comprises a plurality of pipelines, one end of each pipeline is connected with one corresponding connecting hole of the connecting end, and the other end of each pipeline is communicated with the outside of the mobile terminal to form the sound channel. The pipeline is made of rigid rods, or a second reflecting layer made of rigid rods is formed on the inner wall of the pipeline.

According to some embodiments of the present disclosure, the lengths of the plurality of pipes are not exactly the same, and each pipe is independently disposed inside the mobile terminal.

According to some embodiments of the present disclosure, the plurality of conduits are different in length and/or a filler is disposed within the plurality of conduits; a labyrinth path is arranged in the pipeline and used for enabling the inside of the pipeline to form a tortuous path and prolonging the passing time of sound.

According to some embodiments of the present disclosure, a filler is disposed within the plurality of pipes according to a preset ratio.

According to a second aspect of embodiments of the present disclosure, there is provided a mobile terminal comprising any of the speaker assemblies described above.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

when a user uses the mobile terminal provided with the sound gathering device, sound emitted by the loudspeaker can be guaranteed not to be transmitted to the surroundings through the sound gathering device, and can be transmitted to a specified direction through the plurality of sound channels of the sound gathering device, and the sound volume in the direction is stronger and the sound is transmitted farther. Furthermore, the sound emitted by the loudspeaker has directivity, the user in the sound propagation direction can hear the sound emitted by the loudspeaker, other people in other positions cannot hear the sound emitted by the loudspeaker, the privacy of the user is ensured, and meanwhile, the interference to other people when the loudspeaker is used in public places is also avoided.

This disclosed speaker subassembly, through above-mentioned technical scheme, mobile terminal's inside only need install a speaker, gathers the sound device at the sound outlet installation of speaker and both can realize the gathering of sound, makes the sound that the speaker sent have the directive property, has protected user's privacy. The mode of combining a plurality of loudspeakers is not needed, acoustic focusing is realized through the acoustic metamaterial, the arrangement of elements in the mobile terminal is reduced, the space in the mobile terminal is saved, and the mobile terminal has the advantages of simplicity in installation, easiness in operation, easiness in realization and the like.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic diagram of a speaker assembly shown in accordance with an exemplary embodiment.

Fig. 2 is a schematic diagram illustrating another speaker assembly according to an exemplary embodiment.

Fig. 3 is a diagram illustrating a sound focus effect for a speaker assembly according to an exemplary embodiment.

Fig. 4 is a flowchart illustrating operation of an audio processing circuit of a handset according to an exemplary embodiment.

Fig. 5 illustrates the operation of a speaker circuit according to an exemplary embodiment.

Fig. 6 is a schematic diagram of a handset circuit board, according to an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Fig. 1 and 2 illustrate a speaker assembly according to an exemplary embodiment, and as shown in fig. 1, the speaker assembly may include: the loudspeaker 10, the loudspeaker 10 is set up inside the mobile terminal; the sound gathering device 20 comprises a first end and a second end which are connected, the second end comprises a plurality of sound channels 21, the first end of the sound gathering device 20 is connected with the sound outlet 11 of the loudspeaker 10, and the second end is communicated with the outside of the mobile terminal; the loudspeaker 10 emits sound from the sound outlet 11, and the sound is emitted to the outside of the mobile terminal through a plurality of sound channels 21; wherein the path lengths in the plurality of sound passages 21 are not exactly the same, and the inner walls of the sound passages 21 are rigid rods.

The mobile terminal may be an electronic product with a speaker, such as a mobile phone, a computer, and an electronic watch. The second end of the sound gathering device 20 comprises a plurality of sound channels 21, the length of the sound channels 21 can be different, and the inner wall can be made of rigid rods, so that the manufacturing cost can be saved; the sound collecting device 20 can also be made of a rigid rod, so that the volume or thickness of the sound collecting device 20 can be reduced, the volume of the sound collecting device 20 is smaller, and the space is saved.

The sound is transmitted through a medium, the sound can be generated only by the vibration of an object, and the sound is the fluctuation generated by the vibration of the substance, namely sound wave, and the sound wave can be heard only by the transmission of the medium. The speed of sound waves transmitted in a medium is called sound speed (or sonic speed), the speed of sound in different media is different, and the speed of sound in air is 340m/s.

The metamaterial is an artificial material with special properties, has a precise geometric structure and size, and has a microstructure and size dimension smaller than the wavelength acted by the metamaterial, so that the metamaterial can influence the wavelength acted by the metamaterial; it possesses some special properties, such as allowing light, electromagnetic waves to change their usual properties, which cannot be achieved in conventional materials.

Acoustic metamaterials, which can process and regulate sound waves in an unconventional manner and often have performance parameters that are not available with traditional materials; the composite structure is artificially manufactured, and has the characteristics of exceeding the behavior of natural materials, such as negative refraction, abnormal Doppler effect, plane focusing and the like, because the structural size unit of the composite structure is far smaller than the wavelength of sound waves. The negative refractivity of the acoustic metamaterial means that the material can totally reflect sound waves, and sound cannot propagate in the material.

When a user uses a mobile terminal with a sound gathering device 20, the sound outlet 11 of the speaker 10 of the mobile terminal is provided with the sound gathering device 20, the sound gathering device 20 may include a plurality of sound channels 21, one end of each of the sound channels 21 is connected to the speaker 10 of the mobile terminal, the other end of each of the sound channels is communicated with the outside of the mobile terminal, the outside of the mobile terminal is generally provided with a sound outlet, and the other end of each of the sound channels 21 is opened to the sound outlet of the mobile terminal. The sound outlet holes may be provided in plural, and the plural sound passages 21 may be connected to different sound outlet holes. The connection order may be determined according to the distance between each sound outlet hole and the plurality of sound passages 21, with a relatively close preferential connection. Since the plurality of sound channels 21 are hollow pipes and the inner walls of the sound channels are rigid rods, sound cannot be transmitted through the inner walls of the plurality of sound channels 21, the plurality of sound channels 21 provide channels for sound transmission, and the transmission speed of sound in air is a fixed value. Wherein, the path length among a plurality of sound channels 21 is not identical, the path length of a plurality of sound channels 21 is different, sound is different in a plurality of sound channels 21 propagation distance, the sound channel 21 with longer path can be set at the position closer to the sound outlet hole, the sound channel 21 with shorter path can be set at the position farther from the sound outlet hole, through such setting, the time that the sound wave farther from the sound outlet hole reaches the sound outlet hole is consistent with the sound wave closer to the sound outlet hole, the interference between the sound waves is avoided, the propagation effect of sound in a certain direction is ensured, and the effect that the user receives the sound sent by the loudspeaker 10 is ensured. The different path lengths can be realized by providing a plurality of sound channels 21 with different lengths, or providing a bent passage on the inner wall of the sound channels 21 to realize different internal paths. Making the sound emitted by the loudspeaker 10 in a given direction stronger and travel a greater distance. The sound outlet holes can be adjusted according to the using distance between the sound outlet holes and the user, so that the sound of the part which is far away from the user in the straight line reaches the sound outlet holes first, and the sound which is close to the user in the straight line reaches the sound outlet holes later, and the sound can reach the position of the user at the same time. The sound emitted from the loudspeaker 10 passes through the sound gathering device 20, so that the sound of the loudspeaker 10 can be ensured not to be transmitted to the surroundings and can be transmitted to a designated direction through the plurality of sound channels 21 of the sound gathering device 20. Furthermore, the sound emitted by the loudspeaker 10 has directivity, so that a user in the sound propagation direction can hear the sound emitted by the loudspeaker 10, and other persons in other positions cannot hear the sound emitted by the loudspeaker 10, the privacy of the user is ensured, and meanwhile, the interference to other persons when the user uses the loudspeaker 10 to emit the sound in public places is avoided.

According to the speaker assembly, only one speaker 10 needs to be installed inside the mobile terminal, and the sound gathering device 20 is installed at the sound outlet 11 of the speaker 10, so that sound gathering can be achieved, the sound emitted by the speaker 10 has directivity, and privacy of users is protected. The method does not need to adopt a mode of combining a plurality of loudspeakers, realizes sound focusing through an algorithm, reduces the arrangement of elements in the mobile terminal, saves space in the mobile terminal, and has the advantages of simple installation, easy operation, easier realization and the like.

For example, the mobile terminal is a mobile phone, the speaker 10 is a speaker inside the mobile phone, and with the speaker assembly disclosed in the present application, sound focusing can be achieved only by installing one speaker 10 inside the mobile phone, so that sound emitted by the speaker 10 is transmitted to a specified direction, the number of speakers inside the mobile phone can be reduced, production and manufacturing costs are reduced, and by saving space inside the mobile phone, more space can be provided for other elements inside the mobile phone, for example, a battery with a larger volume can be placed, and further, the capacity of the battery is increased, and further, the standby time of the mobile phone is increased, and the like.

According to some embodiments of the present disclosure, an end of the plurality of sound passages 21 communicating with the outside of the mobile terminal is divided into a first portion through which the sound passes to be focused on the first area and a second portion through which the sound passes to be focused on the second area. The opening directions of the sound channels 21 can be set to face different directions, for example, the opening directions of the sound channels 21 are set to face the positions of the two ears of the user, the first part corresponds to the left ear, and the second part corresponds to the right ear, so that the sounds heard by the two ears of the user can be ensured to be the same, and the sound effect is further ensured.

According to some embodiments of the present disclosure, a plurality of isolation switches are disposed inside the plurality of sound channels 21, and the plurality of isolation switches can control the plurality of sound channels 21 to be turned on or off respectively. By controlling the isolation switch to control the opening or closing of each sound channel 21, a corresponding control key can be arranged outside the mobile terminal, and a user can adjust the sound emission position to a position required by the user according to requirements. For example, the control key connected to the isolating switch is of a key type, different keys have different modes, and each mode correspondingly turns on different isolating switches, or the control key connected to the isolating switch is of a rotary type, and rotates to different angles to correspondingly turn on different isolating switches, thereby realizing control over the plurality of sound channels 21. The control key may also be in software of the mobile terminal, and when the user needs to adjust, the control software of the mobile terminal may be opened and then the control key may be adjusted.

According to some embodiments of the present disclosure, the speaker 10 and the plurality of sound channels 21 may be moved towards or away from each other. The movement control of the speaker 10 and the plurality of sound channels 21 may be realized by moving a control key. The mobile control key may be disposed outside the mobile terminal, or in the software of the mobile terminal, when the user needs to adjust, the control software of the mobile terminal may be opened to adjust the distance between the speaker 10 and the plurality of sound channels 21. The distance between the loudspeaker 10 and the plurality of sound channels 21 is different, so that the distance from the loudspeaker 10 to the plurality of sound channels 21 is different, and the position of sound focusing can be changed.

According to some embodiments of the present disclosure, the path lengths of the plurality of sound passages 21 decrease from the central position near the sound outlet 11 toward the periphery. The path lengths of the plurality of sound passages 21 are not all the same, and the plurality of sound passages 21 at the center position of the sound outlet 11 are longer and gradually decrease toward the periphery of the sound outlet 11, that is, the plurality of sound passages 21 at the edge position of the sound outlet 11 are the shortest. Generally, the center position of the sound outlet 11 is closer to the sound outlet hole of the mobile terminal, the edge position of the sound outlet 11 is farther from the sound outlet hole than the center position, and the sound wave propagation path at the edge position of the sound outlet 11 is shortened by the arrangement of the lengths of the plurality of sound channels 21 and is similar to or the same as the path at the center position of the sound outlet 11, so that the sound waves at the edge position and the sound waves at the middle position reach the sound outlet hole of the mobile terminal at the same time, the sound gathering effect is improved, the intensity of sound is ensured, and the occurrence of the interference phenomenon between the sound waves caused by the fact that the sound waves cannot reach at the same time is avoided. Wherein the longer sound passages 21 in the center can consume excessive length by bending around to finally match the shorter sound passages 21 in the edge. Meanwhile, the sound channel at the center of the sound outlet is longer, and the sound channel at the edge is shorter, because the sound emitted from the speaker 10 is focused at a certain point outside the mobile terminal, the sound propagation distance at the edge is longer than that at the center. The distance difference can be calculated by calculating the distance between the edge position and the center position where the sound passes according to the sound focusing position, and then the length of the edge position and the center position sound channel is set according to the distance difference, so that sound focusing is realized, and the privacy of a user when the user listens to the sound by using the mobile terminal is ensured.

According to some embodiments of the present disclosure, the opening direction of the other ends of the plurality of sound passages 21 is directed toward the center of the sound focusing device 20. The sound channels 21 are arranged at the position where the sound channels 21 are communicated outside the mobile terminal, namely the sound outlet, and the sound channels 21 are gathered towards the center of the sound gathering device 20, so that the gathering of sound wave propagation is ensured, and the sound is propagated towards a uniform direction or a point. Because the internal space of the mobile terminal is limited, the plurality of sound channels 21 can be arranged dispersedly to avoid other elements in the mobile terminal and gather at the sound outlet hole at the edge of the mobile terminal, so that the limited space can be fully utilized, and the gathering effect of sound is ensured.

According to some embodiments of the present disclosure, the sound focusing device 20 may further include a connecting end disposed at a first end of the sound focusing device 20, wherein a first end of the connecting end 12 is open and communicated with the sound outlet 11; a second end of the connecting end 12 connects a plurality of sound channels 21. The opening of the first end of link 12 is connected with sound outlet 11, and the opening of the first end of link 12 can wrap up sound outlet 11, and the other end of link is connected with a plurality of sound passageway 21, has guaranteed that all sound waves that get into sound outlet 11 that speaker 10 sent all pass through sound gathering device 20, also namely have guaranteed that there is not the sound wave to propagate through other approaches in entering into a plurality of sound passageways 21, has guaranteed the efficiency and the gathering effect of sound propagation.

According to some embodiments of the present disclosure, as shown in fig. 1, the connecting end 12 is tapered, with a cross-sectional area of the first end being smaller than a cross-sectional area of the second end. Since the sound outlet 11 of the speaker 10 of the general mobile terminal is relatively small, the first end is connected to the sound outlet 11 and has a size corresponding to the sound outlet 11. The connecting end 12 is a conical cylindrical mechanism, the sectional area of the first end of the connecting end 12 is smaller than that of the second end, the diameter ratio of the second end is larger, the sound gathering is more facilitated, and the second end is larger in area and can be connected with more sound channels 21. The connecting end 12 is made of an acoustic metamaterial, or the inner wall of the connecting end 12 is pasted with the acoustic metamaterial. The connecting end 12 may also be cylindrical, with the cross-sectional area of the first end of the connecting end 12 being equal to the cross-sectional area of the second end. The cylindrical or conical connection end 12 is connected at a first end to the loudspeaker 10 and at a second end to a plurality of sound channels 21.

According to some embodiments of the present disclosure, as shown in fig. 2, acoustic labyrinth 30 is formed with a plurality of bending acoustic channels 31, one end of bending acoustic channels 31 is connected to a second end of connection end 12; the other end is communicated with the outside of the mobile terminal to form a plurality of sound channels 21; the acoustic labyrinth 30 is made of acoustic metamaterial, or a first reflecting layer made of acoustic metamaterial is formed on the inner wall of the bent acoustic channel 31. The link is connected with the sound outlet 11 of speaker 10, and the second end through link 12 connects sound maze 30, through link 12, has guaranteed that the sound wave that sends through sound outlet 11 of speaker 10 enters into sound maze 30, through a plurality of bending sound passageway 31 in sound maze 30, realizes the gathering effect to sound. The bent sound channels 31 in the sound labyrinth 30 are arranged in a zigzag path, and the lengths of the bent sound channels 31 are different, wherein the bent sound channels 31 at the central position of the sound labyrinth 30 are longer, the bent sound channels 31 at the peripheral position of the sound labyrinth 30 are shorter, the bent sound channels 31 are arranged in a manner that the lengths of the bent sound channels from the center of the sound labyrinth 30 to the periphery are reduced progressively, and the openings of the bent sound channels 31 face the center of the sound labyrinth 30, so that the sound waves at the edge part can be gathered with the sound waves at the middle part and are simultaneously transmitted to a designated area. The sound collecting device 20 as a whole of the sound maze 30 is connected to the sound outlet 11 of the speaker 10 through the connection end 12, and the layout of the plurality of sound channels 21 is not required to be considered, so that the installation is simple and the realization is easy.

Generally, the sound outlet 11 of the speaker 10 of the mobile terminal is smaller, the size of the sound labyrinth 30 may be larger than that of the sound outlet 11, the sound labyrinth 30 is connected with the sound outlet 11 through the connecting end 12, so that the connecting part of the sound outlet 11 and the sound labyrinth 30 is more sealed, wherein the connecting end 12 can be made of an acoustic metamaterial, it is ensured that sound cannot be transmitted to other directions, and the sound focusing effect is further ensured.

The whole acoustic maze 30 is made of acoustic metamaterial, so that the volume of the acoustic maze 30 is reduced, and the internal space of the mobile terminal is saved; the inner wall of acoustic labyrinth 30 is provided with a first reflective layer, and the first reflective layer is made of an acoustic metamaterial, so that the manufacturing cost of acoustic labyrinth 30 can be reduced.

The inner wall of the acoustic labyrinth 30 may be a plurality of bent channels made of an acoustic metamaterial, that is, a plurality of bent acoustic channels 31, one end of each bent acoustic channel 31 is connected to the second end of the connecting end 12 to form a plurality of acoustic channels 21, and the other end of each bent acoustic channel 31 is opened to a sound outlet of the mobile terminal.

The interior of the acoustic labyrinth 30 may be a plurality of honeycomb structures made of an acoustic metamaterial, wherein each honeycomb structure has two openings, one opening of each honeycomb is connected with one opening of another honeycomb, a plurality of bent acoustic channels 31 with different lengths are formed by arranging a plurality of honeycombs, one end of each bent acoustic channel 31 is connected with the second end of the connecting end 12 to form a plurality of acoustic channels 21, and the other end of each bent acoustic channel 31 is opened at the sound outlet hole of the mobile terminal.

According to some embodiments of the present disclosure, the sound labyrinth 30 is sized to correspond to the sound outlet 11 and is adhered to the inside of the sound outlet 11 by means of adhesion. Inside sound maze 30 directly pasted in sound outlet 11, the two size corresponds, can guarantee that all sound waves all get into a plurality of bending sound passageway 31 propagation in sound maze 30 to, set up sound maze 30 inside sound outlet 11, can save mobile terminal's inner space.

According to some embodiments of the present disclosure, the second end of the connecting end 12 is opened with a plurality of connecting holes; the sound focusing device 20 includes a plurality of pipes, one end of each pipe is connected to a corresponding connection hole of the connection end 12, and the other end is communicated with the outside of the mobile terminal to form a sound passage 21. The pipeline is made of rigid rods, or a second reflecting layer made of rigid rods is formed on the inner wall of the pipeline. The second end of the connection end is provided with a plurality of connection holes, and if the sound collecting device 20 is provided with a plurality of pipes, the plurality of pipes are connected with the plurality of connection holes of the second end of the connection end, and the plurality of pipes may be directly inserted into the plurality of connection holes to form a plurality of sound passages 21. The second end of the connecting end 12 can be set into a socket, each connecting hole socket is a jack, the plurality of pipelines are plugs, the plurality of pipelines are connected with the socket through the plugs, the plurality of pipelines are connected with the plurality of connecting holes, and the installation is more convenient. It is also possible that a plurality of ducts are provided at one end of acoustic labyrinth 30 to be connected to a plurality of connection holes at the second end of the connection end, wherein the plurality of ducts communicate with a plurality of bent acoustic passages 31 of acoustic labyrinth 30 to form a plurality of acoustic passages 21. The plurality of pipelines are integrally rigid rods, so that the plurality of pipelines are light and thin, the size is small, and the internal space of the mobile terminal can be saved; the second reflective layer of the inner wall of the plurality of tubes is made of rigid rods, which can reduce the manufacturing cost of the plurality of tubes.

According to some embodiments of the present disclosure, the plurality of pipes are not exactly the same length, and each pipe is independently disposed inside the mobile terminal. The length of every pipeline differs and independent, can be according to mobile terminal's inner space distribution, carry out the overall arrangement, the pipeline that 11 central points of sound outlet put is than longer, marginal position pipeline is than shorter, longer pipeline can dodge route to mobile terminal's play sound hole through buckling, shorter pipeline can be directly connected with mobile terminal's play sound hole, every pipeline dispersion overall arrangement is in mobile terminal's inside, every pipeline is at mobile terminal's play sound hole gathering, through such a mode, can gather sound device 20 in a flexible way overall arrangement, the limited inner space of make full use of mobile terminal. For example, the mobile terminal is a mobile phone, the speaker 10 is a speaker inside the mobile phone, and the trend of each pipeline is arranged by utilizing the gaps between the elements inside the mobile phone, so that other spaces inside the mobile phone are not unnecessarily occupied, and the sound gathering device 20 does not need to be separately arranged at an installation position, so that the speaker assembly disclosed by the invention can be applied to any mobile phone.

According to some embodiments of the present disclosure, the plurality of conduits are different in length, and/or a filler is disposed within the plurality of conduits; the inside of the pipeline is provided with a labyrinth path which is used for forming a tortuous path inside the pipeline and prolonging the passing time of sound. The labyrinth path arranged in the pipeline can be realized by arranging a small stop block in the pipeline, so that a tortuous path is formed, and the passing time of sound is prolonged, wherein the small stop block can be made of a rigid rod.

According to some embodiments of the present disclosure, a filler is disposed within the plurality of tubes according to a preset ratio. Wherein, the preset proportion is as follows: for example, each pipeline with equal length is filled with filler according to the radian of the sound field, and the effective volume of the filled pipeline approximately forms the radian of the sound field. Wherein the filler can be the super material of sound absorption, also can be other materials, for example: sound absorbing foam, zeolite powder, etc. After the sound absorbing material is filled, according to the Biot porous material equivalent theory, the equivalent sound velocity is reduced. After the filler is filled in the pipeline, the propagation speed of sound in the pipeline can be changed, and the sound in a plurality of pipelines can reach a certain point at the same time by controlling the amount of the filler or whether the filler is arranged, so that the simultaneity of the sound is ensured. The filler can change the speed of sound in the pipeline, the fillers with different proportions are arranged in the pipeline, so that the sound speed at the edge position is high, the speed at the central part is low, the sound emitted by the edge and the sound emitted by the center can synchronously reach a certain point when the sound reaches the certain point outside the mobile terminal, the length of each pipeline can be equal, and the time for the sound to reach the sound outlet hole is controlled by arranging the fillers.

The diameter of each sound channel is larger than or equal to 1mm, and the influence on playing caused by damping generated due to over thinness is avoided. Each sound channel is made of hard materials, such as plastics, metal materials and the like, and is molded through a 3D printing technology.

According to some embodiments of the present disclosure, there is provided a mobile terminal including any one of the speaker assemblies described above. The mobile terminal can be a computer, an interphone, a mobile phone, an electronic watch, a sound box and other devices. Through this disclosed speaker subassembly, can realize that the user especially sees the video in some public places when using mobile terminal's the function of putting outward, for example, the user uses the cell-phone on the subway, this disclosed speaker subassembly can let the sound that the speaker sent have certain directive property, makes the user can hear the sound that the speaker sent, and other personnel can not hear in addition, has guaranteed user's privacy nature, simultaneously, has also avoided the sound that the speaker sent to other personnel's interference.

As shown in fig. 3, a first curve 61 is a sound propagation range curve of a speaker of a mobile terminal not equipped with the speaker assembly of the present disclosure, and a second curve 62 is a sound propagation range curve of a speaker 10 of a mobile terminal equipped with the speaker assembly of the present disclosure, as can be seen from fig. 3, a sound range emitted by the speaker 10 equipped with the speaker assembly of the present disclosure is mostly concentrated in a small designated area, a sound concentration effect is very obvious, sound concentration can be effectively realized, and sound is prevented from being propagated to other directions.

An acoustic metamaterial refers to a periodic structure composed of sub-wavelength units, which exhibits continuity over bulk material due to the sub-wavelength characteristics of its constituent units and has significantly different wave characteristics compared to conventional materials, similar to an optical metamaterial. The acoustic metamaterial regulates and controls sound waves and elastic waves, the sub-wavelength structure is periodically combined together to be used as a bulk material, the acoustic characteristic is similar to the response of the optical metamaterial to electromagnetic waves, and a new sound wave regulation and control mode appears. By using the acoustic metamaterial, the focusing device 20 is manufactured by using its characteristics, and an effect of focusing the sound of the speaker 10 of the mobile terminal is achieved.

The loudspeaker assembly of this disclosure also can be applied to other electronic equipment, for example the explanation ware of museum or exhibition of paintings, and every work corresponds an explanation ware, and every explanation ware is installed the loudspeaker assembly of this disclosure, can guarantee that the sound that sends of different explanation ware is mutual noninterference, and spectator arrives the position of certain work, can only hear the explanation about this work, can guarantee like this and explain the effect, has avoided the interference of different explanation ware, reduces the noise of exhibition hall simultaneously. The window can also be applied to banking transaction windows, and the loudspeaker assembly disclosed by the invention is arranged on the loudspeaker of each window, so that other personnel around the window cannot hear the sound in the designated area of the window, the privacy of transaction personnel is ensured, and meanwhile, the interference of the sound between different windows is also reduced.

According to some embodiments of the present disclosure, a speaker, also called a loudspeaker, converts electrical energy into an electroacoustic device of sound energy, which may be used in a mobile terminal or other electronic devices to support the mobile terminal or other electronic devices to implement an audio output function. The principle of the speaker is that current passes through a coil in a magnetic circuit composed of magnets, and a driving force is generated in the up-and-down direction to vibrate a vibrating body, so that air is vibrated to produce sound.

According to some embodiments of the present disclosure, a speaker of a cellular phone includes a diaphragm, a protector, an anode, an electromagnetic coil, a metal ring, a magnet, and a gasket. Among them, the diaphragm is a vibrator (plastic film) for vibrating air, which is one of main parts of a speaker, and MCPET is used as a material in many cases. The protector protects the diaphragm (made of metal). The anode is used to concentrate the magnetic lines of force in the metal plate around the electromagnetic coil. The electromagnetic coil is a coil that generates a driving force when an electric current is passed through it. The metal ring is used for gathering magnetic lines of force on the metal plate around the electromagnetic coil. The magnet is used for emitting magnetic lines. The spacers are used to suppress the vibration body (air brake) and to prevent dust.

In some embodiments according to the present disclosure, the speaker is typically connected to the circuit board through a contact pad, and an audio processing circuit on the circuit board is in signal communication with the speaker for controlling the operational state of the speaker.

In some embodiments according to the present disclosure, as shown in fig. 4, the audio processing circuit of the handset has the following working flow: when a call is answered, firstly demodulating 67.707kHz receiving baseband information (RXI-P, RXI-N, RXQ-P, RXQ-N) from a radio frequency circuit, sending the information into a baseband processor for digital narrowband demodulation (GMSK), and separating out a control signal and a voice signal; secondly, the voice signal is processed in a series of processes such as decryption, de-interleaving, recombination and the like, and then channel decoding and voice decoding are carried out; finally, pure digital voice signals are obtained and sent to a multi-mode converter in the voice signal processor for digital/analog (D/A) conversion; after the analog audio signal is restored, the audio power is amplified to drive an Earphone (EAR) to sound.

Working principle of the loudspeaker circuit: the pins K2 and K3 of the voice processor N2200 output the hands-free audio signals, which are amplified by the audio power amplifier N2150, and then the amplified hands-free audio signals are output from the pins B1 and C1 of the audio power amplifier N2150. The signal is filtered by filters L2158 and L2159 to remove high-frequency interference, and then is output to a loudspeaker B2150 after passing through an ESD circuit V2150 to push the loudspeaker to sound, as shown in FIG. 5. Wherein, C2153 and C2154 are used for filtering high frequency and low frequency interference in the power supply, and V2150 is ESD circuit, that is, electrostatic protection circuit.

The classification of circuit boards, by board hardness, is: hard boards, soft boards and rigid-flex boards. The number of the circuit layers is divided into: single-sided boards, pseudo-double-sided boards, metallized hole double-sided boards, and multi-layer boards.

The current circuit board mainly comprises the following circuits and drawings (Pattern): the circuit is used as a tool for conducting elements, and a large copper surface is additionally designed on the design as a grounding and power supply layer. The wiring is made simultaneously with the drawing. Dielectric layer (Dielectric): the insulating layer is used to maintain the insulation between the circuit and each layer, and is commonly called as a substrate. Pore (Through hole/via): the via hole can make more than two layers of circuits mutually conduct, the larger via hole is used as a part plug-in, and a non-conducting hole (nPTH) is usually used for surface mounting positioning and screw fixing during assembly. Solder resist ink (sol resist/sol Mask): not all of the copper surfaces are tinned, so that non-tinned areas are printed with a layer of a substance (typically epoxy) that insulates the copper surfaces from the tin, avoiding short circuits between the non-tinned lines. According to different processes, the oil is divided into green oil, red oil and blue oil. Silk screen (Legend/Marking/Silk screen): this is an unnecessary structure, and the main function is to mark the name and position frame of each component on the circuit board, so as to facilitate maintenance and identification after assembly. Surface treatment (Surface Finish): since the copper surface is easily oxidized in a general environment and tin cannot be applied (poor solderability), the copper surface to be tin-plated is protected. The protection methods include TIn spraying (HASL), gold (ENIG), silver (Immersion Silver), TIn (Immersion TIn), and Organic Solderability Preservative (OSP), which have advantages and disadvantages, and are collectively referred to as surface treatments.

According to some embodiments of the present disclosure, the handset circuit board is mainly composed of a baseband part, a radio frequency part and other parts. Other parts include: CPU, memory, various controllers, including touch screen, bluetooth, WIFI, sensor etc.. There are also some interfaces for microphones, earphones, speakers, cameras, display screens, etc. Some mobile phone circuit boards include a main PCB and an auxiliary PCB, wherein the main PCB includes a Wi-Fi module, a camera, an earphone jack, a microUSB interface, and various cables. The auxiliary PCB board is provided with a loudspeaker, a microphone and a flat cable for connecting the two PCB boards.

Fig. 6 is a schematic diagram of a handset circuit board, according to some embodiments of the present disclosure. In fig. 6, the mobile phone circuit board embodiment may include a main board 111, where the main board 111 is a common multilayer PCB circuit board, and a baseband module connector 112 and a radio frequency module connector 113 are disposed on the main board 111, where the baseband module connector 112 is a pad generally including multiple pins for soldering the baseband module chip and the power management chip to the main board 111, and the radio frequency module connector 113 is a pad generally also including multiple pins for soldering the radio frequency module chip to the main board 111. The baseband module chip and the power management chip are responsible for coding. The radio frequency module chip includes: and the radio frequency processor and the radio frequency power amplifier realize the receiving and transmitting functions of signals. The baseband module chip and the radio frequency module chip respectively realize baseband signal processing and radio frequency signal processing of the mobile phone, so the baseband module connector 12 and the radio frequency module connector 113 on the main board 111 have an important role in realizing the communication function of the mobile phone. Also provided on the main board 111 are an earphone socket connector 114, a speaker connector 115, an indicator light connector 116, a microphone connector 117, and a power supply socket connector 118, which are electrically connected to the earphone socket, the speaker, the indicator light, the microphone, and the power supply socket, respectively, and are typically pad connectors.

Based on the same conception, the embodiment of the disclosure also provides a loudspeaker assembly device.

It is understood that the speaker assembly apparatus provided by the embodiments of the present disclosure includes hardware structures and/or software modules for performing the respective functions in order to realize the functions. The disclosed embodiments can be implemented in hardware or a combination of hardware and computer software, in combination with the exemplary elements and algorithm steps disclosed in the disclosed embodiments. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

It is understood that "plurality" in this disclosure means two or more, and other terms are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

It will be further understood that the terms "central," "longitudinal," "lateral," "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used herein to denote orientations and positional relationships, based on the orientation or positional relationship shown in the drawings, and are used merely to facilitate description of the embodiments and to simplify the description, but do not indicate or imply that the referenced devices or elements must be constructed and operated in a specific orientation.

It will be further understood that, unless otherwise specified, "connected" includes direct connections between the two without the presence of other elements, as well as indirect connections between the two with the presence of other elements.

It will be further appreciated that while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the scope of the appended claims.

Claims (11)

1. A speaker assembly applied to a mobile terminal, the speaker assembly comprising:

the loudspeaker is arranged inside the mobile terminal;

the sound gathering device comprises a first end and a second end which are connected, the second end comprises a plurality of sound channels, the first end of the sound gathering device is connected with a sound outlet of the loudspeaker, and the second end is communicated with the outside of the mobile terminal;

the loudspeaker emits sound from the sound outlet, and the sound is emitted to the outside of the mobile terminal through the plurality of sound channels;

wherein the path lengths in the plurality of sound channels are not exactly the same, the sound channel inner walls being rigid rods.

2. The speaker assembly of claim 1, wherein an end of the plurality of sound channels communicating with an outside of the mobile terminal is divided into a first portion through which the sound passes to focus on a first area and a second portion through which the sound passes to focus on a second area.

3. The speaker assembly as claimed in claim 1, wherein a plurality of isolation switches are disposed inside the plurality of sound channels, and the plurality of isolation switches can be used to control the plurality of sound channels to be opened or closed respectively.

4. The speaker assembly of claim 1, wherein the path lengths of the plurality of sound channels decrease from a central location near the sound outlet to the periphery.

5. A loudspeaker assembly according to claim 1, wherein the other ends of the plurality of sound passages open in a direction towards the centre of the sound focusing means.

6. The loudspeaker assembly of any one of claims 1-6, wherein the sound focusing assembly further comprises a connecting end disposed at the first end of the sound focusing assembly, the first end of the connecting end being open to communicate with the sound outlet;

a second end of the connecting end connects the plurality of sound channels.

7. The speaker assembly of claim 6, wherein the focus mechanism comprises:

the acoustic labyrinth is formed with a plurality of bent acoustic channels, and one end of each bent acoustic channel is connected with the second end of the connecting end; the other end of the sound channel is communicated with the outside of the mobile terminal to form a plurality of sound channels;

the sound labyrinth is made of rigid rods, or a first reflecting layer made of rigid rods is formed on the inner wall of the bent sound channel.

8. The speaker assembly of claim 7,

the second end of the connecting end is provided with a plurality of connecting holes;

the sound gathering device comprises a plurality of pipelines, one end of each pipeline is connected with one corresponding connecting hole of the connecting end, the other end of each pipeline is communicated with the outside of the mobile terminal to form the sound channel,

the pipeline is made of rigid rods, or a second reflecting layer made of rigid rods is formed on the inner wall of the pipeline.

9. The loudspeaker assembly of claim 8, wherein the plurality of conduits differ in length and/or a filler is disposed within the plurality of conduits; the inside of the pipeline is provided with a labyrinth path which is used for forming a tortuous path and prolonging the passing time of sound.

10. The loudspeaker assembly of claim 9 wherein the plurality of conduits have filler disposed therein according to a predetermined ratio.

11. A mobile terminal characterized by comprising a speaker assembly according to any of claims 1-10.

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