WO2023051380A1 - 电子设备 - Google Patents

电子设备 Download PDF

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Publication number
WO2023051380A1
WO2023051380A1 PCT/CN2022/120576 CN2022120576W WO2023051380A1 WO 2023051380 A1 WO2023051380 A1 WO 2023051380A1 CN 2022120576 W CN2022120576 W CN 2022120576W WO 2023051380 A1 WO2023051380 A1 WO 2023051380A1
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WO
WIPO (PCT)
Prior art keywords
sound
microphone
balance valve
electronic device
guide channel
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Application number
PCT/CN2022/120576
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English (en)
French (fr)
Inventor
蒋国珠
李凤亮
Original Assignee
维沃移动通信有限公司
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Filing date
Publication date
Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Publication of WO2023051380A1 publication Critical patent/WO2023051380A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H04M1/035—Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/17—Hygienic or sanitary devices on telephone equipment

Definitions

  • the present application belongs to the technical field of electronic equipment, and in particular relates to an electronic equipment.
  • mobile smart hardware such as mobile phones has become an important carrier of human-computer interaction. It not only needs to meet the functional needs of daily communication and entertainment, but also needs to meet the user's requirements for its fashionable appearance. Therefore, mobile smart hardware such as mobile phones not only need to inherit multiple devices and functions, but also need to meet the requirements of thinner, lighter and simpler appearance.
  • the speakers, receivers, and microphones of mobile smart hardware such as mobile phones need to have holes, and the number of holes is large, which affects the appearance of the product and the user experience.
  • the appearance improvement scheme mainly uses micro-slits to realize concealed openings, but this often increases reliability risks such as dust blocking the holes.
  • the purpose of the embodiments of the present application is to provide an electronic device, which can solve the problem in the prior art that opening holes in the electronic device affects user experience.
  • an embodiment of the present application provides an electronic device, the electronic device includes:
  • a casing the casing is provided with a sound inlet, and the casing has an inner cavity; the inside of the casing is provided with a microphone and a balance valve;
  • the microphone is communicated with the sound inlet hole through the first sound guide channel
  • the balance valve is communicated with the sound inlet hole through the second sound guide channel
  • the balance valve is located between the inner cavity and the The junction of the second sound guide channel; the first sound guide channel communicates with the second sound guide channel.
  • the electronic device includes: a housing with a sound inlet opening on the housing, and the housing has an inner cavity; a microphone and a balance valve are arranged inside the housing; wherein , the microphone communicates with the sound inlet hole through the first sound guide channel, the balance valve communicates with the sound inlet hole through the second sound guide channel, and the balance valve is located between the inner cavity and the second sound guide channel.
  • FIG. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
  • Fig. 2 is a schematic cross-sectional view along the A-A direction of Fig. 1;
  • Fig. 3 is a schematic sectional view of Fig. 1 along the B-B direction;
  • FIG. 4 is a schematic diagram of a frequency response curve of a microphone according to an embodiment of the present application.
  • the electronic equipment provided in the embodiment of the present application includes:
  • a housing 1, the housing 1 is provided with a sound inlet 2, and the housing 1 has an inner cavity 3; a microphone 4 and a balance valve 5 are arranged inside the housing 1;
  • the microphone 4 communicates with the sound inlet hole 2 through the first sound guide channel 6, the balance valve 5 communicates with the sound inlet hole 2 through the second sound guide channel 7, and the balance valve 5 is located at The connection between the inner cavity 3 and the second sound guiding channel 7 ; the first sound guiding channel 6 communicates with the second sound guiding channel 7 .
  • the balance valve is a component that plays the role of air pressure balance inside the whole machine (corresponding to the above-mentioned inner cavity), and the balance valve may be made of waterproof and breathable material.
  • the lumen 3 marked in Fig. 2 and Fig. 3 is essentially the same, and what can be directly seen in the figure is only a part of the inner chamber, and the part that can be seen directly in Fig. 2 is the same as the part that can be seen directly in Fig. 3 are connected.
  • the electronic device includes: a casing 1, a sound inlet 2 is opened on the casing 1, and the casing 1 has an inner cavity 3; the inside of the casing 1 is provided with Microphone 4 and balance valve 5; wherein, the microphone 4 is communicated to the sound inlet hole 2 through the first sound guide channel 6, and the balance valve 5 is communicated to the sound inlet hole 2 through the second sound guide channel 7, And the balance valve 5 is located at the junction of the inner chamber 3 and the second sound guide channel 7; the first sound guide channel 6 communicates with the second sound guide channel 7;
  • the sound guide channel is set up as a branch, which is connected to the balance valve 5, which plays the role of air pressure balance inside the whole machine, so that the sound inlet 2 of the microphone 4 is connected to the microphone 4 and the balance valve 5 at the same time, reducing an appearance opening; thus ensuring the realization of appearance benefits At the same time, it does not increase the reliability risk of users when using it, and avoids reliability problems such as dust blocking holes; guarantees user experience.
  • the microphone 4 communicates with the first sound guide channel 6 through a microphone inner hole 8 , and a dust-proof component 9 is provided in the microphone inner hole 8 .
  • the dustproof component may be a dustproof net or a waterproof and breathable membrane.
  • a placement slot 10 communicating with the inner hole 8 of the microphone is opened on the housing 1 , and the microphone 4 is placed in the placement slot 10 .
  • a shielding component 11 is provided along the side wall of the placing groove 10 .
  • the shielding component 11 may be a silicone pad.
  • the placing slot 10, the microphone 4 and the shielding component 11 can all be arranged on the main board or the upper cover of the main board, but it is not limited thereto.
  • the shielding component 11 covers the entire placing groove 10 , and the shielding component 11 is consistent with the shape of the placing groove 10 .
  • the noise collected by the microphone can be isolated to the greatest extent.
  • a first sealing member 12 is provided on the side wall of the first sound guiding channel 6 close to the second sound guiding channel 7; and/or, the second sound guiding channel
  • a second sealing member 13 is provided on the side wall of the upper part 7 away from the sound inlet hole 2 .
  • the first sealing component and the second sealing component may be composed of polyethylene terephthalate (polyethylene glycol terephthalate, PET) or materials with the same function.
  • the first sealing part 12 and the second sealing part 13 are integrally formed, or the first sealing part 12 and the second sealing part 13 are smoothly connected. It can be understood that the first sealing member 12 provided on the side wall of the first sound guiding channel 6 is connected to the second sealing member 13 provided on the side wall of the second sound guiding channel 7 .
  • the first sound guiding channel 6 and the second sound guiding channel 7 are bifurcated, and the central axis of the first sound guiding channel 6 is connected to the center axis of the second sound guiding channel 7 . There is an included angle between the central axes.
  • the included angle is greater than 0 degrees, and may be about 90 degrees, so as to ensure that the first sound guide channel leading to the microphone and the second sound guide channel leading to the balance valve are both set as independent channels.
  • the balance valve 5 communicates with the second sound guide channel 7 through the balance valve inner hole 14, and the balance valve 5 is located on the balance valve inner hole 14 close to the inside of the electronic device. one end.
  • the cross-sectional area of the balance valve is greater than or equal to 0.5 mm 2 and less than or equal to 10 mm 2 .
  • the acoustic performance of the microphone can be improved as much as possible, and better flatness can be obtained, so as to meet the application requirements of wideband recording.
  • the electronic device provided by the embodiment of the present application is described below as an example.
  • the embodiment of the present application provides an electronic device, which mainly involves setting a branch in the sound guide channel of the microphone to realize the connection with the balance valve that plays the role of air pressure balance inside the whole machine, so that the microphone can be further
  • the sound hole is connected to the microphone and the balance valve at the same time, reducing an appearance opening.
  • the caliber of the balance valve port corresponding to the cross-sectional area of the above-mentioned balance valve
  • the acoustic performance of the microphone can be optimized; specifically, the balance valve port can be sealed with a waterproof and breathable membrane, and then Reasonably control the caliber of the balance valve port to improve the acoustic performance of the microphone and obtain better flatness to meet the application requirements of broadband recording.
  • the sound inlet channel of the microphone in this solution includes: a sound inlet hole 2 formed on the middle frame (corresponding to the above-mentioned housing 1), a sound guide channel one (corresponding to the above-mentioned first guide Sound channel 6), microphone inner hole 8, sound guide channel two (corresponding to the above-mentioned second sound guide channel 7), balance valve inner hole 14, and the microphone waterproof and breathable membrane located under the microphone inner hole 8 (corresponding to the above-mentioned dustproof A specific implementation of component 9), microphone silicone pad (corresponding to a specific implementation of the above-mentioned shielding component 11), microphone 4, balance valve 5 and other structures.
  • the balance valve 5 can be specifically composed of a piece of waterproof and breathable membrane glued to the port of the balance valve (corresponding to the end of the balance valve 5 located on the inner hole 14 of the balance valve and close to the interior of the electronic device). Specifically, the sound is transmitted to the microphone 4 by the first sound guide channel and the microphone inner hole 8, which is the main sound inlet path; the second sound guide channel of the side branch is connected to the first sound guide channel, and the other end is connected to the balance valve inner hole 14 And balance valve 5.
  • This scheme can replace the scheme in which the microphone and the balance valve respectively open holes, and can be reduced from two holes to one hole. Specifically, the second sound guide channel is added, so that the sound inlet channel of the microphone is connected to the inner hole of the balance valve, and the separate appearance opening of the balance valve is cancelled.
  • the cross-section of the main sound inlet channel can be shown in FIG. 2 , and the sound is connected to the inner hole 8 of the microphone through the sound guide channel one, and reaches the microphone 4 through the waterproof and gas-permeable membrane of the microphone.
  • the sound guide channel 2 as a side branch channel is connected to the sound guide channel 1 and leads to the balance valve 5 in the other direction.
  • PET or a material with the same function can be sealed above the sound inlet channel to form a closed channel, and the waterproof and breathable membrane of the microphone can play the role of waterproof and breathable.
  • the antenna shrapnel 15 and the shielding cover (corresponding to the above-mentioned shielding part 11) will make the length of the sound guide channel longer. If the sound guide channel is too long, it will easily lead to insufficient bandwidth.
  • the sound guide described in this solution The bypass channel composed of channel 2 and balance valve 5 can effectively improve this problem, see the following content for details.
  • the cross-section of the bypass channel can be shown in Figure 3, and the air and sound waves can reach the balance valve 5 through the second sound guide channel.
  • One end that is, the lower end surface of the balance valve 5
  • the waterproof and breathable membrane of the balance valve 5 has relatively large acoustic impedance, which can block the sound waves inside the whole machine to a certain extent, weaken 10-20dB, or even more than 20dB, and can basically avoid the sound crosstalk inside the whole machine from entering the microphone.
  • the side branch channel formed by the sound guide channel 2 and the balance valve 5 can affect the acoustic performance of the microphone.
  • the size of the balance valve can be reasonably adjusted, and the recommended value of its area (corresponding to the above-mentioned cross-sectional area) is greater than Or equal to 0.5mm 2 and less than or equal to 10mm 2 , so as to avoid affecting the mid-range frequency response of the microphone.
  • the recommended value of its area is greater than Or equal to 0.5mm 2 and less than or equal to 10mm 2 , so as to avoid affecting the mid-range frequency response of the microphone.
  • the microphone frequency response curves under three schematic balance valve sizes and independent microphone sound inlet channels are analyzed through simulation.
  • the simulation results can be shown in Figure 4 (the abscissa is the frequency, and the unit is Hz; the ordinate is Amplitude (frequency response) in dB).
  • the curve corresponding to the first label in the upper left corner of Figure 4 is: the microphone frequency response curve of the independent microphone sound inlet channel (that is, not connected to the inner hole of the balance valve), and the curve corresponding to the second label is: and The frequency response curve of the microphone when the balance hole (that is, the inner hole of the balance valve) is connected (that is, the above-mentioned first sound guide channel and the second sound guide channel are connected to the sound inlet hole), and the area of the balance valve is 0.5mm2
  • the third The curve corresponding to the mark is: the frequency response curve of the microphone when it is connected to the balance hole (that is, the above-mentioned first sound guide channel and the second sound guide channel are connected to the sound inlet hole), and the area of the balance valve is 1mm2
  • the fourth The curve corresponding to the mark is: the frequency response curve of the microphone when it is connected to the balance hole (that is, the above-mentioned first sound guide channel and the second sound guide channel are both connected to the sound inlet
  • the bandwidth will be greatly affected; when the area of the balance valve is much larger than 4mm2 , the frequency response at 3kHz-6kHz is deeper; when the area of the balance valve is 1mm Between 2 and 4mm 2 , the bandwidth is improved, the intermediate frequency is flat, and the performance of the microphone can be improved very well. Based on this, considering the whole, it is desirable that the cross-sectional area of the balance valve is greater than or equal to 0.5 mm 2 and less than or equal to 10 mm 2 .
  • the solution provided by the present application can realize the setting of a branch in the sound guide channel of the microphone, so that the balance valve and the microphone share a sound inlet hole, reducing the appearance of an opening.
  • reasonable control of the balance valve size can improve the frequency response and intermediate frequency flatness of the microphone, and improve the performance of broadband applications.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

本申请公开了一种电子设备，属于电子设备技术领域。电子设备包括：壳体，所述壳体上开设有进音孔，且所述壳体具有内腔；所述壳体的内部设置有麦克风和平衡阀；其中，所述麦克风通过第一导音通道连通至所述进音孔，所述平衡阀通过第二导音通道连通至所述进音孔，且所述平衡阀位于所述内腔与所述第二导音通道的连接处；所述第一导音通道与第二导音通道相连通。

Description

电子设备
相关申请的交叉引用
本申请主张在2021年9月28日在中国提交的中国专利申请No.202111141163.8的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于电子设备技术领域，具体涉及一种电子设备。
背景技术
随着通信技术的不断发展，手机等移动智能硬件已成为人机交互的重要载体，不但需满足日常通信、娱乐等功能性需求，还需满足用户对其时尚外观的要求。因此，手机等移动智能硬件不但需要继承多种器件、多种功能，还需满足轻薄化、外观简洁化。
但是，当前手机等移动智能硬件的扬声器、受话器、麦克风等均需开孔，开孔数量较多，影响产品外观和用户体验。而目前外观改善方案主要是通过微缝来实现隐蔽开孔，但往往会增加灰尘堵孔等可靠性风险。
由上可知，现有技术中存在电子设备开孔影响用户体验的问题。
发明内容
本申请实施例的目的是提供一种电子设备，能够解决现有技术中电子设备开孔影响用户体验的问题。
第一方面，本申请实施例提供了一种电子设备，该电子设备包括：
壳体，所述壳体上开设有进音孔，且所述壳体具有内腔；所述壳体的内部设置有麦克风和平衡阀；
其中，所述麦克风通过第一导音通道连通至所述进音孔，所述平衡阀通过第二导音通道连通至所述进音孔，且所述平衡阀位于所述内腔与所述第二导音通道的连接处；所述第一导音通道与第二导音通道相连通。
在本申请实施例中，所述电子设备包括：壳体，所述壳体上开设有进音 孔，且所述壳体具有内腔；所述壳体的内部设置有麦克风和平衡阀；其中，所述麦克风通过第一导音通道连通至所述进音孔，所述平衡阀通过第二导音通道连通至所述进音孔，且所述平衡阀位于所述内腔与所述第二导音通道的连接处；所述第一导音通道与第二导音通道相连通；这样能够实现通过在麦克风的导音通道设置支路，与起整机内部气压平衡作用的平衡阀连接，使麦克风的进音孔同时连通麦克风及平衡阀，减少一个外观开孔；进而保证实现外观收益的同时，不增加用户使用时的可靠性风险，避免出现灰尘堵孔等可靠性问题；保证用户体验。
附图说明
图1是本申请实施例的电子设备结构示意图；
图2是图1沿A-A方向的剖面示意图；
图3是图1沿B-B方向的剖面示意图；
图4是本申请实施例的麦克风频响曲线示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”等所区分的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”，一般表示前后关联对象是一种“或”的关系。
下面结合附图，通过具体的实施例及其应用场景对本申请实施例提供的电子设备进行详细地说明。
本申请实施例提供的电子设备，如图1至图3所示，包括：
壳体1，所述壳体1上开设有进音孔2，且所述壳体1具有内腔3；所述壳体1的内部设置有麦克风4和平衡阀5；
其中，所述麦克风4通过第一导音通道6连通至所述进音孔2，所述平衡阀5通过第二导音通道7连通至所述进音孔2，且所述平衡阀5位于所述内腔3与所述第二导音通道7的连接处；所述第一导音通道6与第二导音通道7相连通。
其中，平衡阀为起整机内部(对应于上述内腔)气压平衡作用的部件，平衡阀可以是由防水透气材质组成的。图2和图3中所标识的内腔3实质是一致的，在图中直接看到的只是属于内腔的一部分，图2中能够直接看到的部分与图3中能够直接看到的部分是相连通的。
在本申请实施例中，所述电子设备包括：壳体1，所述壳体1上开设有进音孔2，且所述壳体1具有内腔3；所述壳体1的内部设置有麦克风4和平衡阀5；其中，所述麦克风4通过第一导音通道6连通至所述进音孔2，所述平衡阀5通过第二导音通道7连通至所述进音孔2，且所述平衡阀5位于所述内腔3与所述第二导音通道7的连接处；所述第一导音通道6与第二导音通道7相连通；这样能够实现通过在麦克风4的导音通道设置支路，与起整机内部气压平衡作用的平衡阀5连接，使麦克风4的进音孔2同时连通麦克风4及平衡阀5，减少一个外观开孔；进而保证实现外观收益的同时，不增加用户使用时的可靠性风险，避免出现灰尘堵孔等可靠性问题；保证用户体验。
如图1和图2所示，所述麦克风4通过麦克风内孔8连通所述第一导音通道6，且所述麦克风内孔8内设有防尘部件9。
这样能够尽量保证麦克风环境的清洁度。具体的，所述防尘部件可以为防尘网或者防水透气膜。
如图2所示，所述壳体1上还开设有与麦克风内孔8连通的放置槽10，所述麦克风4置于所述放置槽10内。
这样能够便于麦克风的安装与固定。
如图2所示，所述放置槽10内沿侧壁设有屏蔽部件11。
这样能够尽量隔绝麦克风收集到杂音。具体的，所述屏蔽部件11可为硅胶垫。放置槽10、麦克风4和屏蔽部件11可以均设置在主板或主板上盖，但并不以此为限。
如图2所示，所述屏蔽部件11覆盖整个所述放置槽10，且所述屏蔽部件11与所述放置槽10的形状一致。
这样能够最大程度的隔绝麦克风收集到杂音。
如图1至图3所示，所述第一导音通道6上靠近所述第二导音通道7的侧壁上设有第一密封部件12；和/或，所述第二导音通道7上远离所述进音孔2的侧壁上设有第二密封部件13。
这样能够尽量形成封闭通道，以保证麦克风准确的收音。关于第一密封部件和第二密封部件可以分别为聚对苯二甲酸乙二醇酯(polyethylene glycol terephthalate，PET)或相同功能的材料组成。
如图1所示，所述第一密封部件12和第二密封部件13为一体成型件，或者，所述第一密封部件12和第二密封部件13平滑连接。可理解为，所述第一导音通道6侧壁设置的第一密封部件12与所述第二导音通道7侧壁设置的第二密封部件13相连接。
这样能够尽量保证在导音通道内形成一个完整的封闭面，进而提升麦克风的收音效果，保证更好的实现收音。
如图1所示，所述第一导音通道6与所述第二导音通道7呈分叉状，且所述第一导音通道6的中轴线与所述第二导音通道7的中轴线之间具有夹角。
这样能够避免平衡阀和麦克风设置在同一通道内。具体的，所述夹角是大于0度的，可以为90度左右，这样能够保证通往麦克风的第一导音通道和通往平衡阀的第二导音通道均设置为独立的通道。
如图1和图3所示，所述平衡阀5通过平衡阀内孔14连通所述第二导音通道7，且所述平衡阀5位于所述平衡阀内孔14上靠近电子设备内部的一端。
这样能够尽量阻挡整机内部的声波，规避整机内部音串扰进麦克风。
本申请实施例中，所述平衡阀的横截面面积大于或等于0.5mm 2且小于或等于10mm 2。
这样能够尽量改善麦克风声学性能，并获得较好的平坦度，实现宽带录 音的应用要求。
下面对本申请实施例提供的电子设备进行举例说明。
针对上述技术问题，本申请实施例提供了一种电子设备，主要涉及通过在麦克风的导音通道设置支路，以实现与起整机内部气压平衡作用的平衡阀连接，使所述麦克风的进音孔同时连通麦克风及平衡阀，实现减少一个外观开孔。进一步在此基础上，可通过控制平衡阀端口的口径(对应于上述平衡阀的横截面面积)，可实现优化麦克风声学性能；具体的，可以是所述平衡阀端口使用防水透气膜密封，然后合理控制平衡阀端口的口径，以改善麦克风声学性能，并获得较好的平坦度，实现宽带录音的应用要求。
下面对本申请实施例提供的方案进行具体举例说明。
如图1至图3所示，本方案中所述麦克风的进音通道包括：中框(对应于上述壳体1)上形成的进音孔2、导音通道一(对应于上述第一导音通道6)、麦克风内孔8、导音通道二(对应于上述第二导音通道7)、平衡阀内孔14，以及位于麦克风内孔8下的麦克风防水透气膜(对应于上述防尘部件9的一种具体实现)、麦克风硅胶垫(对应于上述屏蔽部件11的一种具体实现)、麦克风4、平衡阀5等结构。所述平衡阀5具体可由一片粘于平衡阀端口上(对应于上述平衡阀5位于所述平衡阀内孔14上靠近电子设备内部的一端)的防水透气膜组成。具体的，，声音由导音通道一及麦克风内孔8传输至麦克风4，此为主进音路径；旁支的导音通道二与所述导音通道一连接，另一端连通平衡阀内孔14及平衡阀5。本方案可替代麦克风及平衡阀分别开孔的方案，可由两个孔减为一个孔。具体的，是新增了导音通道二，使得麦克风的进音通道连通了平衡阀内孔，取消了平衡阀的单独外观开孔。
其中，所述主进音通道的截面可如图2所示，声音由导音通道一连接麦克风内孔8，并穿过麦克风防水透气膜到达麦克风4。如图3所示，作为旁支通道的导音通道二与导音通道一连接，通向另一个方向的平衡阀5。具体的，进音通道上方可设有PET或相同功能的材料密封，形成封闭通道，麦克风防水透气膜可起到防水及透气的作用。另外，由于5G天线设计，天线弹片15和屏蔽罩(对应于上述屏蔽部件11)都会使导音通道一长度较长，导音通道过长容易导致频宽不足，本方案中所述的导音通道二和平衡阀5组成的旁支 通路可有效改善该问题，具体可参见以下内容。
具体的，所述旁支通道的截面可如图3所示，空气及声波可由导音通道二到达平衡阀5，所述平衡阀5可由防水透气膜材质组成，一端连接平衡阀内孔134，另一端(即平衡阀5的下端面)与整机内部(对应于上述内腔3)连通。其中，所述平衡阀5的防水透气膜有较大声阻抗，可一定程度上阻挡整机内部的声波，减弱10-20dB，甚至20dB以上，可基本规避整机内部音串扰进麦克风。与此同时，所述导音通道二和平衡阀5组成的旁支通道可影响麦克风的声学性能，本方案中可合理调节平衡阀的尺寸，其面积(对应于上述横截面面积)推荐值为大于或等于0.5mm 2且小于或等于10mm 2，进而避免会影响麦克风中频段频响，具体分析参见下文所述。
本方案中，通过仿真分析了三个示意的平衡阀尺寸下以及独立麦克风进音通道下的麦克风频响曲线，仿真结果可如图4所示(横坐标为频率，单位为Hz；纵坐标为幅值(频响)，单位为dB)。其中，图4左上角标示中的第一个标示所对应的曲线为：独立麦克风进音通道(即不连通平衡阀内孔)的麦克风频响曲线，第二个标示所对应的曲线为：与平衡孔(即平衡阀内孔)连通(即上述第一导音通道和第二导音通道均与进音孔连通)、且平衡阀面积为0.5mm 2时的麦克风频响曲线，第三个标示所对应的曲线为：与平衡孔连通(即上述第一导音通道和第二导音通道均与进音孔连通)、且平衡阀面积为1mm 2时的麦克风频响曲线，第四个标示所对应的曲线为：与平衡孔连通(即上述第一导音通道和第二导音通道均与进音孔连通)、且平衡阀面积为4mm 2时的麦克风频响曲线。由图可推出：当平衡阀面积低于0.5mm 2时，频宽将受影响较大；当平衡阀面积远大于4mm 2时，3kHz-6kHz处频响凹陷较深；当平衡阀面积处于1mm 2至4mm 2之间时，频宽改善，中频较平坦，麦克风性能可很好改善。基于此，考虑整体，所述平衡阀的横截面面积大于或等于0.5mm 2且小于或等于10mm 2，是可取的。
由上可知，本申请提供的方案能够实现在麦克风导音通道设置支路，使得平衡阀与麦克风共用一个进音孔，减少一个外观开孔。此外，合理控制平衡阀尺寸，可改善麦克风频响及中频平坦度，提升宽频带应用的性能。
在此说明，本方案中，上述麦克风防水透气膜可换成普通防尘网，亦可 实现相同效果。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，参照某些示例所描述的特征可在其他示例中被组合。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (10)

  1. 一种电子设备，包括：
    壳体，所述壳体上开设有进音孔，且所述壳体具有内腔；所述壳体的内部设置有麦克风和平衡阀；
    其中，所述麦克风通过第一导音通道连通至所述进音孔，所述平衡阀通过第二导音通道连通至所述进音孔，且所述平衡阀位于所述内腔与所述第二导音通道的连接处；所述第一导音通道与第二导音通道相连通。
  2. 根据权利要求1所述的电子设备，其中，所述麦克风通过麦克风内孔连通所述第一导音通道，且所述麦克风内孔内设有防尘部件。
  3. 根据权利要求1所述的电子设备，其中，所述壳体上还开设有与麦克风内孔连通的放置槽，所述麦克风置于所述放置槽内。
  4. 根据权利要求3所述的电子设备，其中，所述放置槽内沿侧壁设有屏蔽部件。
  5. 根据权利要求4所述的电子设备，其中，所述屏蔽部件覆盖整个所述放置槽，且所述屏蔽部件与所述放置槽的形状一致。
  6. 根据权利要求1所述的电子设备，其中，所述第一导音通道上靠近所述第二导音通道的侧壁上设有第一密封部件；和/或，
    所述第二导音通道上远离所述进音孔的侧壁上设有第二密封部件。
  7. 根据权利要求6所述的电子设备，其中，所述第一密封部件和第二密封部件为一体成型件，或者，所述第一密封部件和第二密封部件平滑连接。
  8. 根据权利要求1所述的电子设备，其中，所述第一导音通道与所述第二导音通道呈分叉状，且所述第一导音通道的中轴线与所述第二导音通道的中轴线之间具有夹角。
  9. 根据权利要求1所述的电子设备，其中，所述平衡阀通过平衡阀内孔连通所述第二导音通道，且所述平衡阀位于所述平衡阀内孔上靠近电子设备内部的一端。
  10. 根据权利要求1所述的电子设备，其中，所述平衡阀的横截面面积大于或等于0.5mm 2且小于或等于10mm 2。
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