WO2023202593A1 - 无线蓝牙耳机的防风噪结构和方法 - Google Patents

无线蓝牙耳机的防风噪结构和方法 Download PDF

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Publication number
WO2023202593A1
WO2023202593A1 PCT/CN2023/089089 CN2023089089W WO2023202593A1 WO 2023202593 A1 WO2023202593 A1 WO 2023202593A1 CN 2023089089 W CN2023089089 W CN 2023089089W WO 2023202593 A1 WO2023202593 A1 WO 2023202593A1
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WIPO (PCT)
Prior art keywords
rod body
wind noise
perforation
wireless bluetooth
microphone
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PCT/CN2023/089089
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English (en)
French (fr)
Inventor
陈树康
韦世翁
谢福邦
Original Assignee
东莞市和乐电子有限公司
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.)
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Application filed by 东莞市和乐电子有限公司 filed Critical 东莞市和乐电子有限公司
Priority to CN202380013928.0A priority Critical patent/CN118077216A/zh
Publication of WO2023202593A1 publication Critical patent/WO2023202593A1/zh

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    • 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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones

Definitions

  • the invention relates to the field of earphones, and in particular to a wind noise-proof structure of a wireless Bluetooth earphone.
  • a wireless Bluetooth headset which includes: a headset body 41 and a rod body 42.
  • the headset body 41 is provided with an earplug 43 for insertion into the human ear canal.
  • the rod body 42 is usually used to house batteries and related circuits.
  • a microphone hole 40 (commonly known as a microphone hole) is provided at the lower end of the rod body for receiving the user's voice during a call.
  • the microphone hole 40 adopts a single hole design. It is opened at the lower end of the rod body because: during use, the rod body is usually hung at an angle at the auricle of the human body.
  • the microphone hole 40 is opened at the lower end of the rod body so that the opening direction points to the user's mouth. part to receive the user's voice.
  • the biggest problem with this structure is that in actual use, especially in walking and riding scenes, because the microphone hole is pointed at the human mouth, it is almost always facing the wind, making the microphone inside the pole extremely susceptible to turbulence. This causes a lot of wind noise problems such as clipping distortion, causing the "puffing" wind sound to be heard during calls and the user's call content cannot be heard clearly.
  • wind noise reduction related algorithms can currently be used through digital signal processing, under this structure, the improvement effect on the wind noise problem is not obvious.
  • the technical problem to be solved by the present invention is to overcome the deficiencies of the existing technology and provide a wind noise-proof structure for a wireless Bluetooth headset.
  • a wind noise-proof structure of a wireless Bluetooth headset including: a main body of the headset and a rod connected to the main body of the headset.
  • the rod is provided with a perforation as a microphone hole near the lower end.
  • the perforation penetrates the rod body, and the opening direction of the perforation intersects the axial direction of the rod body. External sound enters through the perforation and is transmitted to the microphone arranged in the rod body.
  • the perforation includes: a left channel, a right channel and a combining cavity located between the left and right channels, and the left channel and the right channel are connected through the combining cavity.
  • the combination cavity is provided with a cavity opening for communicating with the microphone.
  • an installation platform for installing a microphone is formed at the opening of the cavity.
  • the angle between the opening direction of the perforation and the axial direction of the rod body is 70°-90°.
  • the perforations form left ports and right ports on the left and right surfaces of the rod body, and the surfaces on the left and right sides of the rod body are not parallel.
  • the surface of the rod body has a curved surface, and the left port and the right port are located on the curved surface.
  • the rod body includes a front rod body and a rear rod body that are interlocked with each other.
  • the headphone body is fixedly connected to the front rod body or is integrally formed. The perforation penetrates the front rod body.
  • the present invention has the following beneficial effects compared with the prior art: the present invention adopts a new microphone hole structural design, the microphone hole is designed as a perforation, and the penetrating direction is roughly perpendicular to the axis direction of the rod body, which avoids The head-on wind blows directly into the microphone hole, causing clipping distortion when the microphone receives sound.
  • the perforation has two ports, and the penetrating structure also minimizes the impact of turbulence.
  • Figure 1 is a front view of an existing wireless Bluetooth headset.
  • Figure 2 is a perspective view of the present invention.
  • Figure 3 is a front view of the present invention.
  • Figure 4 is a bottom view of the present invention.
  • Figure 5 is an exploded perspective view of the present invention.
  • Figure 6 is a perspective view of Figure 5 from another perspective.
  • Figure 7 is a wind noise test curve diagram comparing the present invention with different headphones.
  • Figure 8 is a wind noise test curve chart of the comparative example of the present invention and the same earphone.
  • the present invention is a wind noise-proof structure for a wireless Bluetooth headset, which includes: a headset body 1 and a rod 2 connected to the headset body 1.
  • a speaker is provided inside the earphone main body 1.
  • the earphone main body 1 When in use, the earphone main body 1 is placed at the opening of the user's ear canal. According to actual production, the position of the sound hole of the headphone body 1 can be provided with an earplug 11 as needed.
  • the rod body 2 is provided with a through hole 3 serving as a microphone hole near its lower end. Since the through hole 3 penetrates the rod body 2 , a left port 301 and a right port 302 are formed on the left and right surfaces of the rod body 2 . This perforation design is completely different from the single hole structure in existing products, and the opening position is different.
  • the surfaces on the left and right sides of the rod body 2 are not parallel. More specifically, the surface of the rod body 2 has a curved surface 20, and the left port 301 and the right port 302 are located on the curved surface 20. As shown in Figures 3 and 4, due to the curved surface 20 on the rod body 2, the left port 301 and the right port 302 form a certain inclination, and the inclination direction is toward the front surface of the rod body 2, so that the sound emitted by the user's mouth can be heard. Better delivery to left port 301 and right port 302.
  • the opening direction At the same height, this prevents the headwind from blowing directly into the microphone hole and avoids distortion when the microphone receives sound.
  • the perforation 3 has two ports, a left port 301 and a right port 302, and the penetrating structure can minimize the impact of turbulent flow.
  • the rod body 2 includes a front rod body 21 and a rear rod body 22 that are interlocked with each other.
  • the headphone body 1 and the front rod body 21 are fixedly connected or integrally formed.
  • the front rod body 21 has a through hole 3 that penetrates the front rod body 21 .
  • the perforations 3 include: a left channel 31 extending from the left port 301 into the forward rod body 21, a right channel 32 extending from the right port 302 into the forward rod body 21, and a right channel 31 located between the left and right channels 31 and 32.
  • the combination cavity 33 between them, that is, the left channel 31 and the right channel 32 are connected through the combination cavity 33, thereby forming a through hole.
  • the combination cavity 33 has a cavity opening 331 for communicating with the microphone, and a mounting platform 332 for installing the microphone is formed at the cavity opening 331 .
  • the microphone is installed on the installation platform 332. External sound can be input from the left port 301 and the right port 302 respectively, and then collected in the combination cavity 33 through the left channel 31 and the right channel 32, and is received by the microphone located at the combination cavity 33.
  • the present invention has the following beneficial effects compared with the prior art: the present invention adopts a new microphone hole structural design, the microphone hole is designed as a perforation, and the penetrating direction is roughly perpendicular to the axis direction of the rod body, which avoids The head-on wind blows directly into the microphone hole, causing clipping distortion when the microphone receives sound.
  • the perforation has two ports, and the penetrating structure also minimizes the impact of turbulence.
  • the present invention has the following beneficial effects compared with the prior art: the present invention designs the microphone hole as a perforation, and the penetrating direction is roughly perpendicular to the axis direction of the rod body 2 to avoid the headwind from blowing directly into the microphone hole. , causing the microphone to produce clipping distortion when collecting sound, and the perforation 2 has two ports, and the penetrating structure also minimizes the impact of turbulence.
  • the comparison test in Figure 8 is for testing microphone holes with different structures in the same product. After testing and comparison, in the same product, the wind noise prevention effect of the present invention is obviously due to other comparison examples. Among them, in comparison product E, although the earphones of the technical solution of the present invention are used, it still uses a single microphone hole in the existing design. , its wind noise prevention effect is still significantly weaker than that of product A using the technical solution of the present invention.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Headphones And Earphones (AREA)

Abstract

本申请公开了一种无线蓝牙耳机的防风噪结构和方法，其包括：耳机主体和与耳机主体连接的杆体，所述的杆体靠近下端位置设置有一作为麦克风孔的穿孔，该穿孔贯穿杆体，且穿孔开设方向与杆体的轴向方向相交，外部声音通过穿孔进入并传递至设置于杆体内麦克风中。本申请将麦克风孔设计成穿孔，且贯穿的方向大致垂直于杆体的轴线方向，避免迎面正风直接吹到麦克风孔，致麦克风收音时产生削顶失真，而穿孔具有两个端口，贯穿的结构也最大程度地减弱紊流带来的影响。

Description

无线蓝牙耳机的防风噪结构和方法 技术领域
本发明涉及耳机领域，特指一种无线蓝牙耳机的防风噪结构。
 背景技术
目前在耳机市场，越来越多的无线蓝牙耳机产品层出不穷，而且很多耳机都含有主动降噪功能以及麦克风通话功能。见图1所示，这是目前一款无线蓝牙耳机，其包括：耳机主体41和杆体42，耳机主体41上设置有耳塞43，用于放入人体耳道。杆体42内通常用于设置电池和相关电路。在杆体下端设置有麦克风孔40（俗称咪孔）用于接收用户通话时的声音。麦克风孔40采用单孔设计，其开设于杆体最下端是因为：在使用过程中，杆体通常倾斜垂挂在人体耳廓处，麦克风孔开设于杆体最下端，令其开孔方向指向使用者的嘴部，以便于接收使用者的发出的声音。但是这种结构存在的最大问题就是：在实际使用过程中，特别时走路和骑行场景，因麦克风孔指向人体嘴部，导致其几乎也是正面迎风，导致杆体内部的麦克风极易受到紊流，使其产生很大的削顶失真等风噪问题，造成通话时听到“噗噗”的风声而听不清使用者通话内容。虽然，目前可以通过数字信号处理的降风噪相关算法，但在该结构下，风噪问题的改善效果也不明显。
有鉴于此，本发明人提出以下技术方案。
 技术问题
本发明所要解决的技术问题在于克服现有技术的不足，提供一种无线蓝牙耳机的防风噪结构。
 技术解决方案
为了解决上述技术问题，本发明采用了下述技术方案：无线蓝牙耳机的防风噪结构，包括：耳机主体和与耳机主体连接的杆体，所述的杆体靠近下端位置设置有一作为麦克风孔的穿孔，该穿孔贯穿杆体，且穿孔开设方向与杆体的轴向方向相交，外部声音通过穿孔进入并传递至设置于杆体内麦克风中。
进一步而言，上述技术方案中，所述的穿孔包括：左通道、右通道和位于左右通道之间的结合腔，左通道与右通道通过结合腔连通。
进一步而言，上述技术方案中，所述的结合腔开设有一用于连通麦克风的腔体开口。
进一步而言，上述技术方案中，所述的腔体开口处形成有一用于安装麦克风的安装平台。
进一步而言，上述技术方案中，所述的穿孔开设方向与杆体的轴向方向夹角为70°-90°。
进一步而言，上述技术方案中，所述穿孔在杆体的左右两侧的表面形成左端口和右端口，杆体左右两侧的表面不平行。
进一步而言，上述技术方案中，杆体的表面具有曲面，所述的左端口和右端口位于该曲面上。
所述的杆体包括相互扣合的前杆体和后杆体，所述的耳机本体与前杆体固定连接或者一体成型，所述的穿孔贯穿前杆体。
 有益效果
采用上述技术方案后，本发明与现有技术相比较具有如下有益效果：本发明采用了新型的麦克风孔结构设计，将麦克风孔设计成穿孔，且贯穿的方向大致垂直于杆体的轴线方向，避免迎面正风直接吹到麦克风孔，致麦克风收音时产生削顶失真，而穿孔具有两个端口，贯穿的结构也最大程度地减弱紊流带来的影响。在这种设计下，当耳机佩戴在人头实际通话时，在有风吹的场景，特别时骑行和快速走路或刮风天气等，对方也能清楚听到使用者的说话声。
 附图说明
图1是现有无线蓝牙耳机的主视图。
图2是本发明的立体图。
图3是本发明的主视图。
图4是本发明的仰视图。
图5是本发明的立体分解图。
图6是图5中另一视角的立体图。
图7是本发明与不同耳机的对比例的风噪测试曲线图
图8是本发明与同一耳机的对比例的风噪测试曲线图。
 本发明的实施方式
下面结合具体实施例和附图对本发明进一步说明。
见图2至图6所示，本发明为一种无线蓝牙耳机的防风噪结构，其包括：耳机主体1和与耳机主体1连接的杆体2。耳机主体1内部设置有扬声器，使用时耳机主体1放置在使用者的耳道口出。根据实际生产，耳机主体1出音孔位置可以根据需要设置有耳塞11。
所述的杆体2靠近下端位置设置有一作为麦克风孔的穿孔3。由于穿孔3贯穿杆体2，所以在杆体2的左右两侧的表面形成左端口301和右端口302。这种穿孔设计完全不同于现有产品中的单孔结构，并且开设位置不同。
本实施例中，杆体2左右两侧的表面采用不平行，更具体的说，杆体2的表面具有曲面20,所述的左端口301和右端口302位于该曲面20上。结合图3、图4所示，由于杆体2上的曲面20，所以左端口301和右端口302形成一定的倾斜，而倾斜方向朝向杆体2的前表面，这样便于使用者嘴部发出的声音可以更好的传递至左端口301和右端口302。
再结合图3所示，穿孔3的开设方向X与杆体2的轴向方向Y相交，二者的夹角为70°-90°接近垂直，此时，左端口301和右端口302并不处于同一高度上，这样避免迎面正风直接吹到麦克风孔，避免出现麦克风收音时失真的情况出现。同时，穿孔3具有左端口301和右端口302两个端口，贯穿的结构可最大程度地减弱紊流带来的影响。
结合图5、图6所示，所述的杆体2包括相互扣合的前杆体21和后杆体22，所述的耳机本体1与前杆体21固定连接或者一体成型，所述的穿孔3设置砸前杆体21上，及穿孔3贯穿前杆体21。具体而言，所述的穿孔3包括：由左端口301向前杆体21内伸入的左通道31、由右端口302向前杆体21内伸入的右通道32和位于左右通道31、32之间的结合腔33，即左通道31与右通道32通过结合腔33连通，从而形成一个贯穿的孔。
所述的结合腔33开设有一用于连通麦克风的腔体开口331，所述的腔体开口331处形成有一用于安装麦克风的安装平台332。装配时，麦克风安装在安装平台332，当外部声音可以分别从左端口301和右端口302输入，然后通过左通道31和右通道32汇集在结合腔33，被位于结合腔33处的麦克风接收。
采用上述技术方案后，本发明与现有技术相比较具有如下有益效果：本发明采用了新型的麦克风孔结构设计，将麦克风孔设计成穿孔，且贯穿的方向大致垂直于杆体的轴线方向，避免迎面正风直接吹到麦克风孔，致麦克风收音时产生削顶失真，而穿孔具有两个端口，贯穿的结构也最大程度地减弱紊流带来的影响。在这种设计下，当耳机佩戴在人头实际通话时，在有风吹的场景，特别时骑行和快速走路或刮风天气等，对方也能清楚听到使用者的说话声。
采用上述技术方案后，本发明与现有技术相比较具有如下有益效果：本发明将麦克风孔设计成穿孔，且贯穿的方向大致垂直于杆体2的轴线方向，避免迎面正风直接吹到麦克风孔，致麦克风收音时产生削顶失真，而穿孔2具有两个端口，贯穿的结构也最大程度地减弱紊流带来的影响。
见图7所示，这是本发明与对比例进行的风噪测试曲线图。测试产品包括：
A、采用本发明技术方案制作的耳机，如图2-6所示；
B、对比例：将A中产品中的穿孔一侧封堵，即将左端口301或右端口302封堵；
C、对比例：采用如图1所示无线耳机左耳耳机；
D、对比例：采用如图1所示无线耳机右耳耳机。
结合图7所示，经过测试对比，本发明的防风噪效果明显由于其他对比例，其中，对比产品B中，虽然采用了本发明技术方案的耳机，但是由于其将穿孔一侧封堵，其防风噪效果与其他对比例产品差异不大，由此可将，采用贯穿的穿孔作为麦克风孔对降低风噪具有主要作用。
见图8所示，这是本发明与对比例进行的风噪测试曲线图。测试产品包括：
A、采用本发明技术方案制作的耳机，如图2-6所示；
B、对比例：将A中产品中的穿孔一侧封堵，即将左端口301或右端口302封堵；
E、对比例：采用A中产品，但是穿孔结构采用如图1所示设置在耳机的底部的单一麦克风孔；
图8对比测试是针对同一产品中，对采用不同结构的麦克风孔进行测试。经过测试对比，在同一产品中，本发明的防风噪效果明显由于其他对比例，其中，对比产品E中，虽然采用了本发明技术方案的耳机，但是其仍采用现有设计中的单一麦克风孔，其防风噪效果仍明显弱于采用本发明技术方案的产品A。
当然，以上所述仅为本发明的具体实施例而已，并非来限制本发明实施范围，凡依本发明申请专利范围所述构造、特征及原理所做的等效变化或修饰，均应包括于本发明申请专利范围内。

Claims (10)

  1. 无线蓝牙耳机的防风噪结构，包括：耳机主体（1）和与耳机主体（1）连接的杆体（2），其特征在于：所述的杆体（2）靠近下端位置设置有一作为麦克风孔的穿孔（3），该穿孔（3）贯穿杆体（2），且穿孔（3）开设方向与杆体（2）的轴向方向相交，外部声音通过穿孔（3）进入、并传递至设置于杆体（2）内麦克风中。
  2. 根据权利要求1所述的无线蓝牙耳机的防风噪结构，其特征在于：所述的穿孔（3）包括：左通道（31）、右通道（32）和位于左右通道（31、32）之间的结合腔（33），左通道（31）与右通道（32）通过结合腔（33）连通。
  3. 根据权利要求2所述的无线蓝牙耳机的防风噪结构，其特征在于：所述的结合腔（33）开设有一用于连通麦克风的腔体开口（331）。
  4. 根据权利要求3所述的无线蓝牙耳机的防风噪结构，其特征在于：所述的腔体开口（331）处形成有一用于安装麦克风的安装平台（332）。
  5. 根据权利要求1所述的无线蓝牙耳机的防风噪结构，其特征在于：所述的穿孔（3）开设方向与杆体（2）的轴向方向夹角为70°-90°。
  6. 根据权利要求1所述的无线蓝牙耳机的防风噪结构，其特征在于：所述穿孔（3）在杆体（2）的左右两侧的表面形成左端口（301）和右端口（302），杆体（2）左右两侧的表面不平行。
  7. 根据权利要求6所述的无线蓝牙耳机的防风噪结构，其特征在于：杆体（2）的表面具有曲面（20），所述的左端口（301）和右端口（302）位于该曲面（20）上。
  8. 根据权利要求1-7中任意一项所述的无线蓝牙耳机的防风噪结构，其特征在于：所述的杆体（2）包括相互扣合的前杆体（21）和后杆体（22），所述的耳机本体（1）与前杆体（21）固定连接或者一体成型，所述的穿孔（3）贯穿前杆体（21）。
  9. 无线蓝牙耳机的防风噪方法，该无线蓝牙耳机包括：耳机主体（1）和与耳机主体（1）连接的杆体（2），其特征在于：该防风噪方法为：在杆体（2）靠近下端位置设置有一作为麦克风孔的贯穿杆体（2）的穿孔（3），所述穿孔（3）具有左端口（301）和右端口（302），通过将左端口（301）和右端口（302）设置在不同高度上，避免迎面正风直接吹向作为麦克风孔的穿孔（3）而导致的麦克风收音时失真情况出现、减弱紊流带来的影响。
  10. 根据权利要求10所述的无线蓝牙耳机的防风噪方法，其特征在于：所述的左端口（301）和右端口（302）形成朝向杆体（2）的前表面方向的倾斜。
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