WO2015003387A1 - 一种终端 - Google Patents

一种终端 Download PDF

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Publication number
WO2015003387A1
WO2015003387A1 PCT/CN2013/079305 CN2013079305W WO2015003387A1 WO 2015003387 A1 WO2015003387 A1 WO 2015003387A1 CN 2013079305 W CN2013079305 W CN 2013079305W WO 2015003387 A1 WO2015003387 A1 WO 2015003387A1
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WO
WIPO (PCT)
Prior art keywords
micro
sound
perforated plate
cavity
audio cavity
Prior art date
Application number
PCT/CN2013/079305
Other languages
English (en)
French (fr)
Inventor
行晓亮
任艳辉
Original Assignee
华为终端有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为终端有限公司 filed Critical 华为终端有限公司
Priority to PCT/CN2013/079305 priority Critical patent/WO2015003387A1/zh
Publication of WO2015003387A1 publication Critical patent/WO2015003387A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer

Definitions

  • the present invention relates to portable electronic devices, and more particularly to a terminal. Background technique
  • the screen is getting bigger and bigger, and there are more and more functional modules.
  • the requirements for users to lighten and thin the mobile phone are getting higher and higher.
  • the space of the phone's sound cavity structure is often compressed very small.
  • the sound quality of mobile phone voice calls, music playback, etc. is closely related to the volume of the sound cavity.
  • the air in the sound chamber is in a sealed state, and the reflection of the diaphragm vibration of the speaker will produce a reflection, which will seriously dampen the diaphragm and affect the sound quality. Therefore, the higher the clearance space, the lower the frequency performance. The better, the better the user's hearing experience.
  • the technical problem to be solved by the present invention is to provide a terminal capable of improving the volume of the sound cavity and improving the sound quality.
  • a terminal including a sound chamber and a speaker, wherein the sound chamber is provided with a sound hole, the speaker is fixed in the sound chamber, and the sound output end of the speaker is matched with the sound hole.
  • the terminal further comprising a micro-perforated plate; the micro-perforated plate is fixed in the sound cavity, the micro-perforated plate is located at one side of the speaker, the side and the The sound emitting end of the speaker is opposite; the micro-perforated plate divides the cavity of the sound chamber into a front sound chamber and a rear sound chamber, and the speaker is located in the front sound chamber.
  • the diameter of the perforation on the microperforated plate is
  • a gap is provided between the micro-perforated plate and the speaker.
  • the circumferential edge of the micro-perforated plate is in a seamlessly fixed connection with the inner wall of the sound cavity.
  • the micro-perforated board is a flat panel. shape.
  • the circumferential edge of the micro-perforated plate surrounds the sound-emitting end of the speaker.
  • the microperforated plate is one of an arc, a cone, and a frustum.
  • the micro-perforated board is two a layer, and a gap is provided between the two layers of the microperforated plates,
  • the structure of the microperforated plates is the same or different for every two layers.
  • the air molecules in the front sound chamber vibrate under the vibration of the speaker diaphragm, and are adsorbed and consumed by the micro-perforated plate through the micro-perforated plate, and some air molecules vibrate through the micro-perforated plate to enter the rear sound.
  • the cavity and the inner wall of the rear sound chamber are again reflected into the micro-perforated plate, and the vibration can be adsorbed and consumed again, thereby effectively preventing the sound from being reflected back and forth in the sound cavity to form a standing wave, thereby avoiding a negative influence on the diaphragm, effectively
  • the normal sound emission of low audio is guaranteed; the virtual sound space volume in the sound cavity is expanded without increasing the volume of the sound cavity, and the sound quality effect is improved.
  • FIG. 1 is a partial schematic view of a terminal provided by a first embodiment of the present invention
  • FIG. 2 is a partial schematic diagram of a terminal according to a second embodiment of the present invention.
  • FIG. 3 is a partial schematic diagram of a terminal according to a third embodiment of the present invention.
  • FIG. 4 is a partial schematic diagram of a terminal according to a fourth embodiment of the present invention.
  • FIG. 5 is a partial schematic diagram of a terminal according to a fifth embodiment of the present invention.
  • FIG. 6 is a partial schematic diagram of a terminal provided by a sixth embodiment of the present invention. detailed description
  • a terminal provided by the first embodiment of the present invention includes a sound chamber 1, a speaker 2, and a micro-perforated plate 3.
  • 1 is a partial structural view of the terminal.
  • the sound chamber 1 is provided with a sound hole 10, and the speaker 2 is fixed in the sound chamber 1.
  • the sound output end of the speaker 2 is matched with the sound hole 10, thereby A sealed space is formed in the sound chamber 1.
  • the terminal of the present invention may be a mobile phone, or may be a portable electronic device such as a PDA or a tablet computer that can play audio.
  • the micro-perforated plate 3 is fixed in the sound chamber 1, and the micro-perforated plate 3 is located on one side of the speaker 2, the side being opposite to the sound-emitting end thereof, that is, the micro-perforated plate 3 is located on the back surface of the speaker 2.
  • the microperforated plate 3 divides the cavity of the sound chamber 1 into a front sound chamber la and a rear sound chamber lb.
  • the speaker 2 is located in the front sound chamber la. When the speaker 2 sounds, the air molecules in the front sound chamber la vibrate under the vibration of the diaphragm of the speaker 2, and are adsorbed and consumed by the micro-perforated plate 3 when passing through the micro-perforated plate 3, and some air molecules vibrate through the micro-perforated plate 3 to enter.
  • the rear sound chamber lb, the inner wall of the rear sound chamber lb is reflected again through the micro-perforated plate 3, and the vibration can be adsorbed and consumed again, thereby effectively preventing the sound from being reflected back and forth in the sound chamber 1 to form a standing wave, thereby avoiding the generation of the diaphragm. Damping the negative influence, effectively guaranteeing the normal emission of low audio; expanding the virtual sound space volume in the sound chamber 1 without increasing the volume of the sound chamber 1 to improve the sound quality effect.
  • the micro-perforated plate 3 is used for processing, and the cost is low.
  • a gap is provided between the micro-perforated plate 3 and the speaker 2 so that the sound can sufficiently pass through the micro-perforated plate 3 for better sound-absorbing effect.
  • the circumferential edge of the microperforated plate 3 is seamlessly and fixedly coupled to the inner wall of the sound chamber 1 such that the front sound chamber la and the rear sound chamber communicate only through the perforations 30 on the microperforated plate 3, so that the sound of the speaker 2 must be
  • the micro-perforated plate 3 can enter the rear sound chamber lb to further improve the sound-absorbing effect, and at the same time facilitate the assembly connection between the micro-perforated plate 3 and the sound chamber 3.
  • the diameter of the perforations 30 on the microperforated plate 3 is 0.3 mm - 1. 5 mm for the best muffling effect.
  • the diameter of the perforation 30 is not limited thereto, and the diameter of the perforation 30, the opening ratio of the microperforated plate 3, the opening position, and the like can be calculated in accordance with the optimum acoustic space model. Due to the structure of the sound chamber 1 of different volumes, the internal sound absorption coefficient of the demand is also different. In the specific implementation process, the improved space model can be designed according to the volume and sound absorption coefficient of the structure of the sound chamber 1, and the current space model can be utilized. There are commercial simulation software to assist with analytical calculations.
  • the micro-perforated sheet 3 can be made of PVC (polyvinyl chloride) at a low cost and is easy to process.
  • PVC polyvinyl chloride
  • the material of the micro-perforated plate 3 is not limited thereto, and in other embodiments, other materials such as metal or the like may be used.
  • the microperforated plate 3 may be in the form of a flat plate for the convenience of processing and preparation for assembly into the sound chamber 1.
  • the micro-perforated plate 3 can be fixed in the sound chamber 1 by ultrasonic welding.
  • the micro-perforated plate 3 is fixed and reliable.
  • the micro-perforated plate 3 can also be fixed to the sound chamber 1 by bonding, plugging or the like. in.
  • the micro-perforated plate 3 is in the form of a flat plate.
  • the shape of the micro-perforated plate 3 is not limited thereto.
  • the second embodiment of the present invention is provided. 2 is a partial schematic view of the terminal provided by the present invention. The center of the micro-perforated plate 3 is convex toward the rear sound chamber lb.
  • the circumferential edge of the micro-perforated plate 3 surrounds the sound-emitting end of the speaker 2, so that the micro-perforated plate 3 can cover the speaker 2 as a whole, can prevent the side wall reflection sound of the sound chamber 1 from affecting the vibration of the diaphragm, and further improve the sound quality; in this embodiment, the micro-perforated plate 3 is curved, of course, the micro-perforated plate 3 Other structures such as a tapered shape (third embodiment as shown in FIG. 3), a frustum shape (fourth embodiment as shown in FIG. 4), and the like may be convex toward the rear sound chamber lb.
  • the micro-perforated plate 3 is a layer. In other embodiments, the micro-perforated plate 3 can also be used with at least two layers, and a gap is provided between each two-layer micro-perforated plate 3 for better It plays the sound absorption effect and improves the sound quality.
  • the structure of each of the two micro-perforated plates may be the same or different.
  • the microperforated plate 3 has two layers, and the two microperforated plates 3 have the same structure.
  • the two microperforated plates 3 are all plate-shaped, and the perforation aperture and the opening ratio are the same.
  • the perforation aperture or aperture ratio of the two microperforated plates 3 may also be different.
  • the structure of each of the two microperforated plates may also be different, for example, at least one of the overall shape of each microperforated plate, the perforation aperture, and the opening ratio may be different.
  • micro-perforated plate 3a and 3b wherein one micro-perforated plate 3a is the same structure as the micro-perforated plate in the second embodiment, and the other micro-perforated plate 3b is used in the first embodiment.
  • the structure of the microperforated plate in the embodiment is the same, that is, the structures of the two microperforated plates 3a, 3b are different.
  • a combination of any two or more of the different structure microperforated plates of the first to fourth embodiments may be employed.
  • the circumferential edge of the microperforated plate 3 is in a seamlessly fixed connection with the inner wall of the sound chamber 1, and in other embodiments, between the circumferential edge of the microperforated plate 3 and the inner wall of the sound chamber 1. It can also have a slight gap, which can also achieve better sound-absorbing effect.
  • the terminal provided by the invention in the structural design of a portable electronic device such as a mobile phone, the volume of the sound chamber 1 can be reduced, the stacking space inside the mobile phone can be effectively saved, and more functional modules can be added, or the mobile phone can be made more.
  • the thinner and more beautiful; in the same sound cavity space, the terminal of the invention can effectively improve the sound quality and improve the subjective sensitivity of the user to the audio.
  • the sound chamber 1 in this embodiment may be a specific component.
  • the sound chamber 1 may be formed by a certain structure of a portable electronic device such as a mobile phone.
  • the sound chamber 1 may be It is composed of a mutual connection of a PCB (pr inted ci rcui t board, printed circuit board) board and a mobile phone back cover.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Telephone Set Structure (AREA)

Abstract

本发明实施例公开了一种终端，包括音腔、扬声器、及微穿孔板，扬声器固定于音腔中，微穿孔板固定在音腔内，微穿孔板位于扬声器的一侧，该侧与扬声器的出音端相对；微穿孔板将所述音腔的腔体分隔为前音腔和后音腔，扬声器位于前音腔中。前音腔内的空气分子在扬声器振膜的振动下振动，经过微穿孔板时会被微穿孔板吸附、消耗，部分空气分子振动穿过微穿孔板进入后音腔，后音腔的内壁对其反射再次进过微穿孔板，可再次对振动进行吸附、消耗，从而有效避免声音在音腔中来回反射形成驻波，避免对振膜产生阻尼负面影响，有效保障低音频的正常发出；在不增加音腔容积的情况下，扩展音腔内虚拟声空间体积，改善音质效果。

Description

一种终端
技术领域
本发明涉及便携电子设备， 尤其涉及一种终端。 背景技术
随着手机技术的不断发展， 屏幕越来越大， 功能模块越来越多， 同时， 用 户对手机轻薄化的要求也越来越高。 为了添加更多功能模块， 手机音腔结构的 空间常常被压缩的很小。 然而， 手机语音通话、 音乐播放等的音质音效， 与音 腔的容积有着密切的联系。 在普通音腔结构中， 音腔中的空气处于密封状态， 在扬声器振膜振动的带动下会产生反射，从而对振膜产生严重阻尼作用， 影响 音质， 因此音腔净空间越大则低频性能越好， 用户听觉感受越好。 手机堆叠空 间对音腔容积的限制， 与音质音效对音腔的需求之间， 已经形成一个矛盾。 如 何在小音腔结构情况下， 达到大音腔的效果， 实现良好的音质音效， 已经成为 一个急待解决的问题。 发明内容
本发明所要解决的技术问题在于，提供一种终端，能够提高音腔空间容积， 改善音质音效。
提供了一种终端， 包括音腔及扬声器， 所述音腔上设有出音孔， 所述扬声 器固定于所述音腔中， 所述扬声器的出音端与所述出音孔对应配合，从而在所 述音腔内形成密封空间， 所述终端还包括微穿孔板； 所述微穿孔板固定在所述 音腔内， 所述微穿孔板位于所述扬声器的一侧， 该侧与所述扬声器的出音端相 对； 所述微穿孔板将所述音腔的腔体分隔为前音腔和后音腔， 所述扬声器位于 所述前音腔中。
在第一种可能的实现方式中， 所述微穿孔板上的穿孔的直径为
0.3mm-1.5mm。
结合前述的终端实施方式或第一种可能的实现方式，在第二种可能的实现 方式中， 所述微穿孔板与所述扬声器之间设有间隙。
结合前述的终端实施方式、或第一种可能的实现方式、或第二种可能的实 现方式，在第三种可能的实现方式中， 所述微穿孔板的周向边缘与所述音腔的 内壁无缝贴合固定连接。
结合前述的终端实施方式、或第一种可能的实现方式至第三种可能的实现 方式中的任意一种可能的实现方式，在第四种可能的实现方式中， 所述微穿孔 板为平板状。
结合前述的终端实施方式、或第一种可能的实现方式至第三种可能的实现 方式中的任意一种可能的实现方式，在第五种可能的实现方式中， 所述微穿孔 板的中心向所述后音腔凸起。
结合第五种可能的实现方式，在第六种可能的实现方式中， 所述微穿孔板 的周向边缘环绕在所述扬声器的出音端四周。
结合第五种可能的实现方式或第六种可能的实现方式，在第七种可能的实 现方式中， 所述微穿孔板为弧形、 锥形、 及锥台形中的一种。
结合前述的终端实施方式、或第一种可能的实现方式至第七种可能的实现 方式中的任意一种可能的实现方式，在第八种可能的实现方式中， 所述微穿孔 板为两层， 且两层所述微穿孔板之间设有间隙，
结合第八种可能的实现方式，在第九种可能的实现方式中，每两层所述微 穿孔板的结构相同或相异。
本发明实施例提供的终端，前音腔内的空气分子在扬声器振膜的振动下振 动， 经过微穿孔板时会被微穿孔板吸附、 消耗， 部分空气分子振动穿过微穿孔 板进入后音腔，后音腔的内壁对其反射再次进过微穿孔板， 可再次对振动进行 吸附、 消耗， 从而有效避免声音在音腔中来回反射形成驻波， 避免对振膜产生 阻尼负面影响， 有效保障低音频的正常发出； 在不增加音腔容积的情况下， 扩 展音腔内虚拟声空间体积， 改善音质效果。 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所 需要使用的附图作简单地介绍， 显而易见地， 下面描述中的附图仅仅是本发明 的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提 下， 还可以根据这些附图获得其他的附图。 图 1是本发明第一实施方式提供的终端的部分示意图；
图 2是本发明第二实施方式提供的终端的部分示意图；
图 3是本发明第三实施方式提供的终端的部分示意图；
图 4是本发明第四实施方式提供的终端的部分示意图；
图 5是本发明第五实施方式提供的终端的部分示意图；
图 6是本发明第六实施方式提供的终端的部分示意图。 具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清 楚、 完整地描述。
本发明中第一实施例提供的一种终端， 包括音腔 1、 扬声器 2及微穿孔板 3。 图 1为该终端的部分结构图， 参见图 1 , 音腔 1上设有出音孔 10, 扬声器 2 固定于音腔 1 中， 扬声器 2的出音端与出音孔 10对应配合， 从而在音腔 1 内形成密封空间。 本发明的终端， 可以为手机， 亦可为 PDA、 平板电脑等其他 可播放音频的便携式电子设备。
微穿孔板 3固定在音腔 1内，微穿孔板 3位于扬声器 2的一侧， 该侧与其 出音端相对， 即微穿孔板 3位于扬声器 2的背面。微穿孔板 3将音腔 1的腔体 分隔为前音腔 la和后音腔 lb。 扬声器 2位于前音腔 la中。 扬声器 2发声时， 前音腔 la内的空气分子在扬声器 2振膜的振动下振动， 经过微穿孔板 3时会 被微穿孔板 3吸附、 消耗， 部分空气分子振动穿过微穿孔板 3进入后音腔 lb, 后音腔 lb的内壁对其反射再次经过微穿孔板 3 , 可再次对振动进行吸附、 消 耗，从而有效避免声音在音腔 1中来回反射形成驻波，避免对振膜产生阻尼负 面影响， 有效保障低音频的正常发出； 在不增加音腔 1容积的情况下， 扩展音 腔 1内虚拟声空间体积， 改善音质效果。 并且， 釆用微穿孔板 3 , 便于加工制 备， 且成本低。
进一步的，微穿孔板 3与扬声器 2之间设有间隙，使得声音可充分通过微 穿孔板 3 , 以便起到更好的消音效果。
微穿孔板 3 的周向边缘与音腔 1 的内壁无缝贴合固定连接， 使得前音腔 la和后音腔仅通过微穿孔板 3上的穿孔 30连通， 从而使扬声器 2的声音必须 经过微穿孔板 3才能进入后音腔 lb , 以进一步提高消音效果， 同时便于微穿 孔板 3与音腔 3之间的装配连接。
微穿孔板 3上的穿孔 30的直径为 0. 3mm- 1. 5mm, 以达到最佳的消音效果。 当然， 穿孔 30的直径并不局限于此， 穿孔 30的直径， 微穿孔板 3的开孔率、 开口位置等， 可按照最优声空间模型计算。 由于不同容积的音腔 1结构， 需求 的内部吸声系数也不相同， 具体实施过程中， 可根据音腔 1结构的容积、 吸声 系数，按照需求设计改进后的空间模型， 并可利用现有商业仿真软件协助分析 计算。
微穿孔板 3可以由 PVC (聚氯乙烯）制成， 成本低， 便于加工制备。 当然， 微穿孔板 3的材料并不局限于此， 在其他实施方式中， 亦可釆用其他材料， 如 金属等。
微穿孔板 3可以为平板状， 以便于加工制备， 同时便于装配到音腔 1中。 微穿孔板 3可以通过超声焊固定于音腔 1内，微穿孔板 3固定牢固可靠，在其 他的实施方式中， 微穿孔板 3 亦可通过粘接、 插接等其他方式固定于音腔 1 中。
在上述第一实施方式中，微穿孔板 3为平板状， 当然微穿孔板 3的形状并 不局限于此， 在其他的实施方式中， 如图 2所示本发明提供的第二实施方式， 图 2为本发明提供的终端的部分示意图，微穿孔板 3的中心向后音腔 lb凸起， 进一步，微穿孔板 3的周向边缘环绕在扬声器 2的出音端四周，使得微穿孔板 3可将扬声器 2整体罩住， 可避免音腔 1的侧壁反射声音对振膜的振动产生影 响， 进一步提高音质； 该实施方式中， 微穿孔板 3为弧形， 当然， 微穿孔板 3 亦可为锥形（如图 3所示的第三实施方式）、 锥台形（如图 4所示的第四实施 方式）等其他中心向后音腔 lb凸起的结构。
在上述实施方式中， 微穿孔板 3为一层， 在其他的实施方式中， 微穿孔板 3亦可釆用至少两层， 且每两层微穿孔板 3之间设有间隙， 以更好的起到吸音 效果， 提高音质。 每两层微穿孔板的结构可以相同亦可以相异。
如图 5所示的第五实施方式，微穿孔板 3为两层，且两个微穿孔板 3的结 构相同。 例如， 两个微穿孔板 3均为板状， 且穿孔孔径及开孔率均相同。 可选 的， 两个微穿孔板 3的穿孔孔径或开孔率也可以不相同。 在其他实施方式中，每两个微穿孔板的结构也可以相异， 例如各微穿孔板 的整体形状、 穿孔孔径、 及开孔率等至少一项可以存在区别。 如图 6所述的第 六实施方式， 微穿孔板 3a及 3b, 其中一个微穿孔板 3a釆用与第二实施方式 中微穿孔板相同的结构， 另一个微穿孔板 3b釆用与第一实施方式中微穿孔板 相同的结构， 即两微穿孔板 3a、 3b的结构相异。 此处， 在其他的实施方式中， 亦可釆用第一至第四实施方式中任意两个或两个以上不同结构微穿孔板的组 合。
在上述实施方式中，微穿孔板 3的周向边缘与音腔 1的内壁无缝贴合固定 连接，在其他的实施方式中，微穿孔板 3的周向边缘与音腔 1的内壁之间亦可 略有间隙， 同样可起到较好的消音效果。
釆用本发明提供的终端， 在手机等便携式电子设备的结构设计中， 可以减 小音腔 1体积， 有效节省手机内部的堆叠空间， 用于增加更多的功能模块， 或 者使手机做得更薄更美观； 在同等音腔空间内， 本发明的终端可有效提高音质 音效，提高用户对音频的主观感受度。 本实施例中的音腔 1可以为一个具体的 部件， 当然， 在其他的实施例中， 音腔 1可以由手机等便携式电子设备的某个 结构形成， 例如， 在手机中， 音腔 1可以由 PCB ( pr inted c i rcui t board, 印制电路板）板和手机后盖的相互配合连接构成。
以上的实施方式， 并不构成对该技术方案保护范围的限定。任何在上述实 施方式的精神和原则之内所作的修改、等同替换和改进等， 均应包含在该技术 方案的保护范围之内。

Claims

权 利 要 求
1、 一种终端， 包括音腔及扬声器， 所述音腔上设有出音孔， 所述扬声器 固定于所述音腔中， 所述扬声器的出音端与所述出音孔对应配合，从而在所述 音腔内形成密封空间， 其特征在于， 所述终端还包括微穿孔板； 所述微穿孔板 固定在所述音腔内， 所述微穿孔板位于所述扬声器的一侧， 该侧与所述扬声器 的出音端相对； 所述微穿孔板将所述音腔的腔体分隔为前音腔和后音腔， 所述 扬声器位于所述前音腔中。
2、 根据权利要求 1所述的终端， 其特征在于， 所述微穿孔板上的穿孔的 直径为 0.3mm-1.5mm。
3、 根据权利要求 1或 2所述的终端， 其特征在于， 所述微穿孔板与所述 扬声器之间设有间隙。
4、 根据权利要求 1-3任一所述的终端， 其特征在于， 所述微穿孔板的周 向边缘与所述音腔的内壁无缝贴合固定连接。
5、 根据权利要求 1-4任一所述的终端， 其特征在于， 所述微穿孔板为平 板状。
6、 根据权利要求 1-4任一所述的终端， 其特征在于， 所述微穿孔板的中 心向所述后音腔凸起。
7、 根据权利要求 6所述的终端， 其特征在于， 所述微穿孔板的周向边缘 环绕在所述扬声器的出音端四周。
8、 根据权利要求 6或 7所述的终端， 其特征在于， 所述微穿孔板为弧形、 锥形或锥台形。
9、 根据权利要求 1-8任一所述的终端， 其特征在于， 所述微穿孔板为至 少两层， 且每两层所述微穿孔板之间设有间隙。
10、 根据权利要求 9所述的终端， 其特征在于， 每两层所述微穿孔板的结 构相同或相异。
PCT/CN2013/079305 2013-07-12 2013-07-12 一种终端 WO2015003387A1 (zh)

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