WO2013131366A1 - 一种麦克风降风噪装置 - Google Patents

一种麦克风降风噪装置 Download PDF

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Publication number
WO2013131366A1
WO2013131366A1 PCT/CN2012/082124 CN2012082124W WO2013131366A1 WO 2013131366 A1 WO2013131366 A1 WO 2013131366A1 CN 2012082124 W CN2012082124 W CN 2012082124W WO 2013131366 A1 WO2013131366 A1 WO 2013131366A1
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Prior art keywords
microphone
filler
groove
wind noise
noise reduction
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PCT/CN2012/082124
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English (en)
French (fr)
Inventor
杨凌
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福兴达科技实业(深圳)有限公司
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Publication of WO2013131366A1 publication Critical patent/WO2013131366A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/08Mouthpieces; Microphones; Attachments therefor
    • H04R1/083Special constructions of mouthpieces
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2410/00Microphones
    • H04R2410/07Mechanical or electrical reduction of wind noise generated by wind passing a microphone

Definitions

  • the present invention relates to the field of noise reduction device technology, and in particular to a microphone device capable of reducing wind noise.
  • wind noise In high-speed sports, such as cars, motorcycles, etc., when shooting and recording, DV machines are susceptible to high-speed airflow and wind noise, which affects the daily use of users.
  • the formation of wind noise mainly includes several aspects. The first is the eddy current noise generated around the DV equipment, the second is the noise generated by the high-speed wind on the impact device itself, and the third is the eddy current generated by the wind at the sound hole (such as the recording hole of the microphone).
  • the main solution for wind noise is to change the streamline design of the device itself and increase the buffer to reduce the eddy wind noise and vibration wind noise.
  • the wind noise generated by the eddy current at the sound hole is a problem solved in the prior art. .
  • the utility model patent No. 20092022496. 7 discloses a wind noise reduction mounting device for a microphone, which is arranged between a unidirectional microphone and an electronic product, and which utilizes a porous noise reduction device to eliminate the influence of wind noise during use of the electronic product.
  • the microphone base is used to fix the single-pointing microphone so that the entrance point is still fixed in front of and behind the single-pointing microphone; in addition to the positioning effect, the positioning tube can also function as a sound isolation, thereby reducing wind noise without affecting sensitivity. Effect.
  • Its products are mainly used in headphones or Bluetooth headsets. Because the wind speed at the microphone is not high, the designed wind noise is relatively simple.
  • the technical problem to be solved by the present invention is to provide a microphone wind noise reduction device capable of reducing wind noise at an entrance sound hole.
  • a microphone wind noise reduction device including a fuselage, a microphone, a recording hole, and a positioning cylinder, wherein the bottom of the fuselage is provided with an air inlet duct, and the positioning cylinder
  • the inside of the fuselage is located in the positioning cylinder
  • the recording hole is located at the lower end of the microphone
  • the first filler is located at the inner wall of the bottom end of the positioning cylinder, and the first filler has two end faces.
  • the first groove and the second groove are disposed, and the first groove is filled with a second filler, and the filter channel penetrates the first filler and connects the first groove and the second groove.
  • the air inlet duct and the recording hole are located on the same axis, and the filter air channel and the recording hole are located on different axes.
  • the microphone wind noise reduction device of the present invention has an interference fit between the microphone and the positioning cylinder, the first filler and the positioning cylinder, and the second filler and the first groove.
  • the inner surface of the filter passage is an uneven wave-shaped passage.
  • the material of the first filler is silica gel
  • the material of the second filler is sponge
  • the second groove is further provided with a sponge filled therein.
  • the cross-sectional shapes of the first filler, the second filler, the first groove and the second groove are all circular.
  • the wind noise reduction device of the invention has the advantages of simple structure, practicality and reliability;
  • the high-speed wind is processed by the speed reduction and noise reduction of the silica gel and the sponge, so that there is no wind noise at the position of the recording hole.
  • Figure 1 is a plan view of the present invention
  • Figure 2 is a cross-sectional view taken along line AA of Figure 1 of the present invention
  • Fig. 3 is a cross-sectional view taken along line BB of Fig. 1 of the present invention.
  • the present invention provides a microphone wind noise reduction device, including a body 1, a microphone 3, a recording hole 6, and a positioning cylinder 7.
  • the bottom of the fuselage 1 is provided with an air inlet duct 5,
  • the positioning cylinder 7 is located inside the fuselage 1
  • the microphone 3 is located in the positioning cylinder 7
  • the recording hole 6 is located at the lower end of the microphone 3
  • the inner wall of the bottom end of the positioning cylinder 7 is provided with a first groove 21 and a second groove 22 at the two end faces of the first filling body 2.
  • the first groove 21 is filled with a second filler 4, and the filter channel 8 penetrates the first filling.
  • the object 2 is connected to the first groove 21 and the second groove 22.
  • the air inlet duct 5 is located on the same axis as the recording hole 6, and the filter air passage 8 and the recording hole 6 are located on different axes.
  • the microphone 3 and the positioning cylinder 7, the first filling 2 and the positioning cylinder 7, the second filling 4 and the first recess 21 have an interference fit.
  • the inner surface of the filter passage 8 is an uneven wave-shaped passage.
  • the first filler 2 is made of silica gel, and the second filler 4 is made of sponge.
  • the second groove 22 is further provided with a sponge filled therein.
  • the cross-sectional shapes of the first filler 2, the second filler 4, the first recess 21, and the second recess 22 are all circular.
  • the DV machine enters the first groove 21 through the air inlet duct 5 during specific working (ie, in high-speed motion), and the high-speed wind passes through the first groove 21 because the sound absorbing sponge is filled in the first groove 21.
  • the sound absorbing sponge absorbs sound and absorbs noise, it enters the filter passage 8, and the inner surface of the filter passage 8 is designed as a rugged wave-shaped passage, which can better buffer the speed of the high-speed wind and the effect of absorbing wind noise. Because the microphone 3 and the positioning cylinder 7, the first filler 2 and the positioning cylinder 7, the second filler 4 and the first recess 21 have an interference fit, the wind speed is not easily affected by the high speed wind during the working process. The phenomenon of falling off due to influence.
  • the second groove 22 is further provided with a sound-absorbing sponge filled with the sound-absorbing sponge, and the wind noise and the flow rate of the wind are basically Disappears, thus achieving the effect of reducing wind noise.
  • the wind duct 5 and the recording hole 6 are located on the same axis, and the filter passage 8 and the recording hole 6 are located on different axes. With this placement, the high-speed wind needs to go through straight. The effect of corner turning can greatly reduce the wind speed of high speed wind.

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

Abstract

本发明涉及降低噪音装置技术领域,具体涉及一种能够降低风噪的麦克风装置,包括机身、麦克风、录音孔、定位筒,所述机身底部设有进风管道,所述定位筒位于机身内部,麦克风位于定位筒内,所述录音孔位于麦克风下端,还包括第一填充物以及第二填充物,所述第一填充物位于定位筒底端内壁,第一填充物二端面设有第一凹槽以及第二凹槽,第一凹槽内填充有第二填充物,滤风通道贯穿第一填充物并连接第一凹槽和第二凹槽。本发明具有结构简单、实用、可靠,适合用于在高速运行下的DV机的麦克风的风噪声降低。

Description

一种麦克风降风噪装置
【技术领域】
本发明涉及降低噪音装置技术领域, 具体涉及一种能够降低风噪 的麦克风装置。
【背景技术】
在高速运动的场合, 如汽车、 摩托车等, DV机在拍摄和录音的 时候,容易受到高速运动的气流而产生风噪,影响了用户的日常使用, 风噪的形成主要包括几个方面, 一是在 DV设备的周围产生的涡流噪 音, 二是高速风对冲击设备本身从而导致振动产生的噪音,三是风在 入声孔 (如麦克风的录音孔)处产生的涡流的噪音,前二种风噪目前主 要的解决办法是改变设备本身的流线设计和增加缓冲物等来减少涡 流风噪和振动风噪,而入声孔处涡流产生的风噪则是现有技术中解决 的难题。
专利号为 20092022496. 7的实用新型专利公开了一种麦克风的 降风噪安装装置, 设置在单指向麦克风与电子产品之间, 其利用多孔 降噪装置可以消除电子产品在使用时风噪的影响,采用麦克风基座固 定单指向麦克风使进声点依然在单指向麦克风前后固定的位置;定位 筒除了达到定位的效果还能起到声音隔离的作用,从而达到既降低风 噪, 又不影响灵敏度的效果。其产品主要应用于耳机或蓝牙耳机等场 合, 由于其麦克风处风速并不高, 设计的降风噪也相对简单。
因而相对技术人员来说, 需要设计一种能够在高速运动的场合 降低麦克风入声孔处的风噪的麦克风装置, 来解决现有技术的不足。
【发明内容】
本发明要解决的技术问题是提供一种能够降低入声孔处的风噪 的麦克风降风噪装置。 为了解决以上提出的技术问题, 本发明采用如下技术方案, 一种 麦克风降风噪装置, 包括机身、 麦克风、 录音孔、 定位筒, 所述机身 底部设有进风管道,所述定位筒位于机身内部,麦克风位于定位筒内, 所述录音孔位于麦克风下端, 还包括第一填充物以及第二填充物, 所 述第一填充物位于定位筒底端内壁,第一填充物二端面设有第一凹槽 以及第二凹槽, 第一凹槽内填充有第二填充物, 滤风通道贯穿第一填 充物并连接第一凹槽和第二凹槽。
优选的, 本实用新型的麦克风降风噪装置, 所述进风管道与录音 孔位于同一条轴线上, 所述滤风通道与录音孔位于不同轴线上。
优选的,本实用新型的麦克风降风噪装置,所述麦克风与定位筒、 所述第一填充物与定位筒、所述第二填充物与第一凹槽之间均呈过盈 配合。
优选的, 本实用新型的麦克风降风噪装置, 所述滤风通道内表面 为凹凸不平的波浪形通道。
优选的, 本实用新型的麦克风降风噪装置, 所述第一填充物为的 材料为硅胶, 所述第二填充物的材料为海绵。
优选的, 本实用新型的麦克风降风噪装置, 所述第二凹槽内还设 有填充有海绵。
优选的, 本实用新型的麦克风降风噪装置, 所述第一填充物、 第 二填充物、 第一凹槽以及第二凹槽的截面形状均为圆形。
本发明的有益效果在于:
1、 本发明的降风噪装置具有结构简单、 实用、 可靠;
2、 高速风经过硅胶和海绵的降速、 降噪音处理, 使得录音孔的 位置处没有风噪声。
【附图说明】
为了易于说明, 本发明由下述的较佳实施例及附图作以详细描 述。
图 1是本发明的俯视图;
图 2是本发明的图 1的 A-A方向的剖视图; 图 3是本发明的图 1的 B-B方向的剖视图。
【具体实施方式】
参见图 1-图 2所示, 本发明提供一种麦克风降风噪装置, 包括 机身 1、 麦克风 3、 录音孔 6、 定位筒 7, 所述机身 1底部设有进风管 道 5, 所述定位筒 7位于机身 1内部, 麦克风 3位于定位筒 7内, 所 述录音孔 6位于麦克风 3下端,还包括第一填充物 2以及第二填充物 4, 所述第一填充物 2位于定位筒 7底端内壁, 第一填充物 2二端面 设有第一凹槽 21 以及第二凹槽 22, 第一凹槽 21 内填充有第二填充 物 4, 滤风通道 8贯穿第一填充物 2并连接第一凹槽 21和第二凹槽 22。 所述进风管道 5与录音孔 6位于同一条轴线上, 所述滤风通道 8 与录音孔 6位于不同轴线上。 所述麦克风 3与定位筒 7、 所述第一填 充物 2与定位筒 7、 所述第二填充物 4与第一凹槽 21之间均呈过盈 配合。所述滤风通道 8内表面为凹凸不平的波浪形通道。所述第一填 充物 2为的材料为硅胶, 所述第二填充物 4的材料为海绵。所述第二 凹槽 22内还设有填充有海绵。所述第一填充物 2、 第二填充物 4、 第 一凹槽 21以及第二凹槽 22的截面形状均为圆形。
DV机在具体工作时(即高速运动中), 高速风通过进风管道 5进 入第一凹槽 21处, 由于在第一凹槽 21中填充了吸音海绵, 高速风经 过第一凹槽 21 内的吸音海绵的吸音以及吸噪后, 进入滤风通道 8, 由于将滤风通道 8内表面设计为凹凸不平的波浪形通道,能够更好的 缓冲了高速风的速度以及吸收风噪的效果。而由于麦克风 3与定位筒 7、 第一填充物 2与定位筒 7、 所述第二填充物 4与第一凹槽 21之间 均呈过盈配合,在工作过程中不易受到高速风的风速影响而出现脱落 的现象。风通过滤风通道 8的作用后, 速度以及风噪逐渐减小, 此时 在第二凹槽 22内还设有填充有吸音海绵,再次经过吸音海绵的作用, 风噪声也以及风的流速基本消失, 从而达到降低风噪的效果。本发明 中, 设计时将风管道 5与录音孔 6位于同一条轴线上, 滤风通道 8与 录音孔 6位于不同轴线上, 通过此种放置, 高速风进入时需要经过直 角转弯的作用, 这样可以大大的降低高速风的风速。
以上所述之具体实施方式为本发明的较佳实施方式,并非以此限 定本发明的具体实施范围,本发明的范围包括并不限于本具体实施方 式。凡依照本发明之形状、结构所作的等效变化均包含本发明的保护 范围内。

Claims

权利要求
1. 一种麦克风降风噪装置, 包括机身(1)、 麦克风 (3)、 录音孔 (6)、定位筒 (7),所述机身(1)底部设有进风管道 (5),所述定位筒 (7) 位于机身(1)内部, 麦克风 (3)位于定位筒 (7)内, 所述录音孔 (6)位于 麦克风 3下端, 其特征在于: 还包括第一填充物 (2)以及第二填充物 (4), 所述第一填充物 (2)位于定位筒 (7)底端内壁, 第一填充物 (2) 二端面设有第一凹槽 (21)以及第二凹槽 (22),第一凹槽 (21)内填充有 第二填充物 (4),滤风通道 (8)贯穿第一填充物 (2)并连接第一凹槽 (21) 和第二凹槽 (22)。
2. 根据权利要求 1所述的麦克风降风噪装置, 其特征在于: 所 述进风管道 (5)与录音孔 (6)位于同一条轴线上,所述滤风通道 (8) 与 录音孔 (6)位于不同轴线上。
3. 根据权利要求 2所述的麦克风降风噪装置, 其特征在于: 所 述麦克风 (3)与定位筒 (7)、所述第一填充物 (2)与定位筒 (7)、所述第 二填充物 (4)与第一凹槽 (21) 之间均呈过盈配合。
4. 根据权利要求 3所述的麦克风降风噪装置, 其特征在于: 所 述滤风通道 (8)内表面为凹凸不平的波浪形通道。
5. 根据权利要求 4所述的麦克风降风噪装置, 其特征在于, 所 述第一填充物 (2)为的材料为硅胶, 所述第二填充物 (4)的材料为海 绵。
6. 根据权利要求 5所述的麦克风降风噪装置, 其特征在于: 所 述第二凹槽 (22)内还设有填充有海绵。
7. 根据权利要求 1-6任一项所述的麦克风降风噪装置, 其特征 在于: 所述第一填充物 (2)、第二填充物 (4)、第一凹槽 (21)以及第二 凹槽 (22)的截面形状均为圆形。
PCT/CN2012/082124 2012-03-07 2012-09-27 一种麦克风降风噪装置 WO2013131366A1 (zh)

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