WO2015000415A1 - 一种麦克风 - Google Patents

一种麦克风 Download PDF

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Publication number
WO2015000415A1
WO2015000415A1 PCT/CN2014/081527 CN2014081527W WO2015000415A1 WO 2015000415 A1 WO2015000415 A1 WO 2015000415A1 CN 2014081527 W CN2014081527 W CN 2014081527W WO 2015000415 A1 WO2015000415 A1 WO 2015000415A1
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WO
WIPO (PCT)
Prior art keywords
soundproof
sound
louver
venting
microphone
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Application number
PCT/CN2014/081527
Other languages
English (en)
French (fr)
Inventor
付文敬
Original Assignee
Fu Wenjing
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 Fu Wenjing filed Critical Fu Wenjing
Publication of WO2015000415A1 publication Critical patent/WO2015000415A1/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
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces
    • H04R1/086—Protective screens, e.g. all weather or wind screens
    • 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
    • H04R1/12—Sanitary or hygienic devices for mouthpieces or earpieces, e.g. for protecting against infection

Definitions

  • the invention belongs to the field of sound collection devices, and in particular relates to a microphone.
  • the microphone is a device for collecting sound, and is often used in venues, studios, recording studios, karaoke halls, shops, etc., and is widely used in electronic devices such as mobile phones, tablet computers, and ordinary computers. After the microphone collects the sound, the sound signal is transmitted to the subsequent processing system through the audio line, and the processing system performs operations such as zooming, playing, transmitting or storing.
  • Ordinary microphones cannot isolate the ambient sound source and the target sound source, so that the external ambient sound source can not be isolated well, and the target sound cannot be prevented from leaking out.
  • Ordinary microphones can't prevent the leakage of the target sound from affecting the surrounding environment. This limits the use of the microphone in some occasions. For example, when listening to a concert, suddenly receiving an emergency call, the call will affect the neighbor. A person who listens to the concert.
  • the technical problem to be solved by the present invention is to provide a microphone capable of isolating an ambient sound source from a target sound source and reducing the interaction between the environment and the target sound source.
  • the present invention is achieved by providing a microphone including a microphone for receiving a sound signal and an audio line for transmitting a sound signal to a subsequent processing unit, the audio line being coupled to the microphone, the microphone Also included is a fixed strap, a sound-insulating housing, and an acoustic louver for air convection, the sound-insulating housing being secured to the user's face by the strap and forming a sealed cavity between the user's mouth and face
  • the wheat head is fixed on one side of the soundproof casing and located in the cavity, and the audio wire is disposed on the soundproof casing; the soundproof ventilation window is disposed on the soundproof casing.
  • the soundproof outer casing has a curved structure, and a middle portion thereof is outwardly convex.
  • the middle portion forms a sealed cavity with the user's mouth and face.
  • the two ends of the fixing strap are fixed to the two ends of the soundproof housing, and the middle portion thereof can be sleeved and fixed to the head of the user, and the soundproof housing can be covered on the face of the user.
  • the soundproof housing is provided with a mounting hole
  • the soundproof louver comprises a louver housing and a filling inner layer, wherein the louver housing is mounted in the mounting hole, and the venting window is exposed to the soundproof housing
  • Two vents are respectively disposed on the two sides, and the filling inner layer is filled in the louver housing, and a venting passage is defined in the ventilating window, and two ends of the venting passage are respectively communicated with the two venting ports.
  • the ventilation channel is a polygonal channel.
  • the louver housing is made of a sound insulating material
  • the filling inner layer is made of a sound absorbing material
  • the soundproof housing comprises at least two layers of sound insulating material and at least one layer of sound absorbing material, the sound absorbing material layer and the sound insulating material layer are spaced apart;
  • the soundproof louver comprises a ventilation channel and two vents, The two vents are respectively opened on two sides of the soundproof casing, and the venting channel is formed on a layer of sound absorbing material between any two adjacent layers of sound insulating material, and the two ends are respectively opposite to the two The vents are connected.
  • the number of the soundproof louvers is two.
  • the microphone further includes at least two one-way venting valves, and the one-way venting valve is installed in at least one vent of each of the sound venting windows, wherein all one-way venting valves in one of the soundproof louvers are The sound venting window is vented in the direction of one side of the wheat head, and all of the one-way venting valves in the other sound absorbing window are vented toward the side of the sound louver away from the wheat head.
  • the microphone further includes two ventilation fans, each ventilation fan is disposed on a side of the soundproof enclosure away from the wheat head, and is located above the ventilation opening on each side of each soundproof ventilation window, one of The ventilation fan blows air toward the side of the sound louver near the wheat head, and the other blows toward the side of the sound louver away from the wheat head.
  • the microphone further includes a ventilation fan, the ventilation fan is disposed on a side of the soundproof casing away from the wheat head, and is located above a ventilation port of one of the soundproof ventilation windows on the side, the ventilation The fan blows air toward the side of the soundproof louver near the wheat head, or blows the side of the soundproof louver away from the side of the wheat head.
  • a ventilation fan is disposed on a side of the soundproof casing away from the wheat head, and is located above a ventilation port of one of the soundproof ventilation windows on the side, the ventilation The fan blows air toward the side of the soundproof louver near the wheat head, or blows the side of the soundproof louver away from the side of the wheat head.
  • the soundproof outer casing of the microphone of the present invention can be fixed on the face of the user through the fixing strap, and forms a sealed cavity with the mouth and the face of the user, and the wheat head is located in the cavity.
  • the user's mouth is aligned with the wheat head, and because the soundproofed casing is isolated from the outside, the external sound source is not received by the wheat head, and the internal target sound source is not transmitted to the outside, thereby isolating the internal and external sound sources, thereby avoiding interdependent.
  • FIG. 1 is a schematic structural view of a preferred embodiment of a microphone of the present invention
  • FIG. 2 is a schematic structural view showing the sound louver of the embodiment shown in FIG. 1 exposed on one side of the soundproof casing;
  • Figure 3 is a schematic view showing the structure of the sound absorbing window of the embodiment shown in Figure 1 exposed on the other side of the soundproof housing;
  • Figure 4 is a schematic view showing the internal structure of the sound absorbing window of the embodiment shown in Figure 1;
  • Figure 5 is a schematic structural view of another preferred embodiment of the microphone of the present invention.
  • Fig. 6 is a schematic view showing the structure of the embodiment shown in Fig. 5 after the ventilation fan is installed.
  • the microphone includes a soundproof housing 100, a wheat head 200, an audio cable 300, a strap 400, and a sound venting window 500.
  • the soundproof outer casing 100 has a curved structure in which the portion 101 is convex outward. Both ends of the fixing strap 400 are fixed on both ends of the soundproof housing 100, and the middle portion thereof can be sleeved and fixed on the user's head, so that the soundproof housing 100 is fixedly disposed on the user's face, and the user's mouth and face are A sealed cavity is formed between the sections.
  • the wheat head 200 is fixed to one side of the soundproof housing 100 and located in the cavity for receiving an acoustic signal.
  • the audio cable 300 is disposed on the soundproof housing 100, and one end thereof is connected to the wheat head 200, and the other end is connected to a subsequent processing unit (not shown) to transmit the sound signal received by the wheat head 200 to the subsequent processing unit.
  • the soundproof outer casing 100 is fixedly disposed on the face of the user, and generally covers the nose of the user.
  • the microphone is further provided with a soundproof louver 500 for ventilation, and the soundproof ventilation
  • the window 500 is disposed on the soundproof housing 100. Even if the soundproof casing 100 does not cover the nose of the user, the user needs to have air convection inside the soundproof casing 100 when speaking, and therefore it is also necessary to provide the soundproof louver 500.
  • the soundproof housing 100 is provided with a mounting hole
  • the soundproof louver 500 includes a louver housing 510 and a filling inner layer 520.
  • the louver housing 510 is made of a sound-insulating material and is mounted in the mounting hole.
  • Two vents are respectively disposed on two sides of the sound-proof housing 100, which are a first vent 501 and a second vent 502, respectively.
  • the first vent 501 is located on a side of the louver housing 510 adjacent to the ram 200
  • the second vent 502 is located on a side of the louver housing 510 away from the ram 200.
  • the filling inner layer 520 is made of a sound absorbing material and is filled in the louver housing 510.
  • the venting passage 521 is defined in the venting window 510.
  • the venting passage 521 is a venting passage, and the two ends respectively have vent holes 5211 and 5212, and the vent holes 5211 and 5212 are respectively provided. It is in communication with the first vent 501 and the second vent 502, respectively.
  • the louver housing 510 is made of a sound insulating material
  • the filling inner layer 520 is made of a sound absorbing material
  • the venting duct 521 is a broken line duct. The sound propagates along a curve, and the direction of propagation changes, and most of the energy is lost. The sound enters the sound venting window 500, after multiple turns, and absorption of the sound absorbing material, and then from the sound venting window 500, the volume can be reduced by 10 to 20 decibels.
  • the outer side of the louver housing 510 can also wrap at least one layer of sound absorbing material and at least one layer of sound insulating material, and the sound absorbing material layer and the sound insulating material layer are spaced apart, so that a better sound insulation effect can be achieved.
  • the soundproof housing 100 can also be made of a sound insulating material.
  • the first vent 501 is an air inlet
  • the second vent 502 is an air outlet.
  • the venting passage 521 is volume-receiving, a part of the air can be accommodated, and when the user exhausts, the exhaust gas fills the venting passage 521 and cannot be completely discharged. When inhaling, the exhaust gas is sucked into the soundproof housing 100 again. This affects the ventilation efficiency.
  • the number of soundproof louvers 500 is two.
  • the other sound louver 500 is only used for exhausting, and the microphone can also be provided with at least two one-way venting valves.
  • a one-way vent valve is installed in the first vent 501 and/or the second vent 502 of each sound louver 500. All one-way venting valves in one of the sound-insulating louvers 500 are ventilated toward the side of the sound-insulating louver 500 near the head 200, and all of the one-way venting valves in the other sound-absorbing louver 500 are moved away from the venting window 500. Ventilation in the direction of the side of the head 200.
  • the first vent 501 of one of the sound louvers 500 is an air inlet
  • the second vent 502 of the other sound louver 500 is an air inlet.
  • the microphone may also be provided with two ventilation fans, each of which is disposed on a side of the soundproof casing away from the wheat head 200 and above the second ventilation port 502 of each soundproof ventilation window 500.
  • One of the ventilating fans blows air to the side of the sound venting window 500 near the nipple 200, and the other blows the direction of the sound absorbing louver 500 away from the nipple 200.
  • the microphone may also be provided with only one ventilation fan disposed on a side of the soundproof casing away from the wheat head 200 and located above the second ventilation port 502 of one of the soundproof ventilation windows 500.
  • the louver 500 is blown near the side of the nipple 200 or blows away from the venting window 500 away from the nipple 200.
  • the microphone can also be provided with only one or two ventilation fans, and no one-way ventilation valve can be provided. It can also be ensured that one acoustic ventilation window 500 is only used for inhalation, and the other acoustic ventilation window 500 is only used for exhausting. the goal of.
  • the soundproof outer casing 100 of the microphone can be fixed on the face of the user through the fixing strap 400, and forms a sealed cavity with the mouth and the face of the user, and the wheat head 200 is located in the cavity, so that the user mouth
  • the soundproof outer casing 100 is isolated from the outside, the external sound source is not received by the wheat head 200, and the internal target sound source is not transmitted to the outside, thereby isolating the internal and external sound sources, thereby avoiding mutual mutual influences.
  • Fig. 5 shows a second embodiment of the present invention, which differs from the previous embodiment in that the sound louver 500' in this embodiment is not a separate component but is built into the soundproof casing 100'.
  • the soundproof casing 100' includes at least two layers of sound insulating material 110' and at least one layer of sound absorbing material 120', and the layer of sound insulating material 110' and the layer of sound absorbing material 120' are spaced apart.
  • the sound ventilating window 500' includes a venting passage and two venting ports, and the two venting openings are respectively opened on both sides of the soundproof housing 100'.
  • the two venting ports are a third venting port 510' and a fourth venting port 520, respectively.
  • the third vent 510' is formed on the sound absorbing material layer 120', and is located on the side of the sound venting window 500' near the wheat head 200.
  • the fourth vent 520' is opened on the sound insulating material layer 110' and is located in the soundproofing
  • the louver 500' is remote from the side of the nipple 200.
  • the venting channel is formed on a layer of sound absorbing material 120' between any two adjacent layers of sound insulating material 110', and has two vent holes at two ends thereof, and two vent holes respectively and a third vent 510' and The four vents 520' are in communication.
  • the venting passage is formed on the inner side of the sound absorbing material layer 120' such that the outer side has a plurality of layers of the sound insulating material layer 110' and the sound absorbing material layer 120', which can provide a better sound insulating effect.
  • the sound insulating material layer 110' and the sound absorbing material layer 120' each have two layers, and the innermost layer when the microphone cover is disposed on the user's face is the sound absorbing material layer 120', which can better absorb sound, the outermost The layer is a layer of sound insulating material 110', which can provide better sound insulation.
  • the microphone also includes at least two one-way venting valves and two venting fans 600' (shown in Figure 6), each venting fan 600' being disposed on the side of the soundproof housing 100' remote from the nipple 200, and located at each Above the fourth vent 520' of the acoustic louver 500'.
  • One of the ventilation fans 600' blows air toward the side of the sound venting window 500' near the wheat head 200, and the other blows toward the sound insulating louver 500' away from the wheat head 200.

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

Abstract

一种麦克风，包括麦头（200）、音频线（300）、固定带（400）、隔音外壳（100）和隔音通气窗（500），音频线（300）连接于麦头（200）上，隔音外壳（100）通过固定带（400）固设于使用者脸部，并与使用者口部和脸部之间形成密封的空腔，麦头（200）固设于隔音外壳（100）一侧并位于空腔内，音频线（300）穿设于隔音外壳（100）上，隔音通气窗（500）设置于隔音外壳（100）上。使用者嘴部对准麦头（200）说话，由于有隔音外壳（100）与外界隔离，外界声源不会被麦头（200）接收，内部的目标声源也不会传输到外部，从而隔离内外声源，避免了相互影响。

Description

一种麦克风 技术领域
本发明属于声音采集装置领域，尤其涉及一种麦克风。
背景技术
麦克风是用于采集声音的装置，常用于会场、播音室、录音棚、卡拉OK厅、商店等场合，在手机、平板电脑、普通电脑等电子设备中也有广泛应用。麦克风采集到声音后通过音频线将声音信号传输到后续的处理系统，由处理系统完成放大、播放、传输或者存储等操作。
普通麦克风无法隔离环境声源与目标声源，这样既不能较好地隔离外界环境声源，也无法防止目标声音外泄。
普通麦克风具有一定的指向性，即对来自于某些角度的声音更加敏感，但是对于非目标角度的声源，普通麦克风的隔离效果并不明显。而对于与目标声源方向相同的环境噪音，则几乎没有区分能力。
普通麦克风也无法防止目标声音外泄影响到周边环境，这在某些场合限制了麦克风的使用，比如，在听音乐会的时候，突然接到紧急电话，此时接通电话就会影响到邻座听音乐会的人。
 技术问题
本发明所要解决的技术问题在于提供一种能隔离环境声源与目标声源，降低环境与目标声源之间的相互影响的麦克风。
 技术解决方案
本发明是这样实现的，提供一种麦克风，包括用于接收声音信号的麦头和可将声音信号传输到后续处理单元的音频线，所述音频线连接于所述麦头上，所述麦克风还包括固定带、隔音外壳和用于空气对流的隔音通气窗，所述隔音外壳通过所述固定带固设于使用者脸部，并与使用者口部和脸部之间形成密封的空腔，所述麦头固设于所述隔音外壳一侧并位于所述空腔内，所述音频线穿设于所述隔音外壳上；所述隔音通气窗设置于所述隔音外壳上。
进一步地，所述隔音外壳为曲面结构，其中部向外凸设，当所述隔音外壳固设于使用者脸部时，其中部与使用者口部和脸部形成所述密封的空腔。
进一步地，所述固定带的两端固设于所述隔音外壳的两端，其中部可套设固定于使用者的头部，所述隔音外壳可罩设于使用者的脸部。
进一步地，所述隔音外壳上开设有安装孔，所述隔音通气窗包括通气窗壳体和填充内层，所述通气窗壳体安装于所述安装孔中，其外露于所述隔音外壳的两侧分别设有两个通气口，所述填充内层填充于所述通气窗壳体内，其内部开设有通气通道，所述通气通道的两端分别与所述的两个通气口相连通。
进一步地，所述通气通道为折线通道。
进一步地，所述通气窗壳体由隔音材料制成，所述填充内层由吸音材料制成。
进一步地，所述隔音外壳包括至少两层隔音材料层和至少一层吸音材料层，所述吸音材料层和所述隔音材料层间隔设置；所述隔音通气窗包括通气通道和两个通气口，所述两个通气口分别开设于所述隔音外壳的两侧，所述通气通道开设于任意相邻两层隔音材料层之间的一层吸音材料层上，其两端分别与所述两个通气口相连通。
进一步地，所述隔音通气窗的数量为两个。
进一步地，所述麦克风还包括至少两个单向通气阀，每个隔音通气窗的至少一个通气口中安装所述单向通气阀，其中一个隔音通气窗中的所有单向通气阀均往所述隔音通气窗靠近所述麦头一侧的方向通气，另一个隔音通气窗中的所有单向通气阀均往所述隔音通气窗远离所述麦头一侧的方向通气。
进一步地，所述麦克风还包括两个通气风扇，每个通气风扇设于所述隔音外壳远离所述麦头的一侧，并位于每个隔音通气窗于此侧的通气口的上方，其中一个通气风扇往所述隔音通气窗靠近所述麦头一侧的方向吹风，另一个往所述隔音通气窗远离所述麦头一侧的方向吹风。
进一步地，所述麦克风还包括一个通气风扇，所述通气风扇设于所述隔音外壳远离所述麦头的一侧，并位于其中一个隔音通气窗于此侧的通气口的上方，所述通气风扇往所述隔音通气窗靠近所述麦头一侧的方向吹风，或者往所述隔音通气窗远离所述麦头一侧的方向吹风。
 有益效果
与现有技术相比，本发明的麦克风其隔音外壳可通过固定带固设于使用者脸部，并与使用者口部和脸部之间形成密封的空腔，麦头位于空腔内，这样，使用者嘴部对准麦头说话，由于有隔音外壳与外界隔离，外界声源不会被麦头接收，内部的目标声源也不会传输到外部，从而隔离内外声源，避免了相互影响。
 附图说明
图1是本发明麦克风一较佳实施例的结构示意图；
图2是图1所示实施例的隔音通气窗外露于隔音外壳一侧的结构示意图；
图3是图1所示实施例的隔音通气窗外露于隔音外壳另一侧的结构示意图；
图4是图1所示实施例的隔音通气窗的内部结构示意图；
图5是本发明麦克风另一较佳实施例的结构示意图；
图6是图5所示实施例的装设通气风扇后的结构示意图。
 本发明的实施方式
为了使本发明所要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
如图1所示，是本发明的一较佳实施例，该麦克风包括隔音外壳100、麦头200、音频线300、固定带400和隔音通气窗500。
隔音外壳100为曲面结构，其中部101向外凸设。固定带400的两端固设于隔音外壳100的两端上，其中部可套设固定于使用者头部，使隔音外壳100固定罩设于使用者脸部，并与使用者口部和脸部之间形成密封的空腔。麦头200固设于隔音外壳100一侧并位于空腔内，用于接收声音信号。音频线300穿设于隔音外壳100上，其一端与麦头200连接，另一端与后续处理单元（图中未示出）连接，从而将麦头200接收的声音信号传输到后续处理单元。
上述隔音外壳100固定罩设于使用者脸部上，一般也会罩设使用者的鼻部，为了使空气对流，避免使用者窒息，该麦克风还设有用于通气的隔音通气窗500，隔音通气窗500设置于隔音外壳100上。即使隔音外壳100不罩设使用者的鼻部，使用者在说话时，隔音外壳100的内部也需要有空气对流，因此也需要设置隔音通气窗500。
具体地，请一同参阅图2至图4，隔音外壳100上开设有安装孔，隔音通气窗500包括通气窗壳体510和填充内层520。通气窗壳体510由隔音材料制成，安装于安装孔中，其外露于隔音外壳100的两侧分别设有两个通气口，分别为第一通气口501和第二通气口502。第一通气口501位于通气窗壳体510靠近麦头200的一侧，第二通气口502位于通气窗壳体510远离麦头200的一侧。填充内层520由吸音材料制成，填充于通气窗壳体510内，其内部开设有通气通道521，通气通道521为折线通道，其两端分别具有通气孔5211、5212，通气孔5211、5212分别与第一通气口501和第二通气口502相连通。
上述通气窗壳体510由隔音材料制成，填充内层520由吸音材料制成，通气管道521为折线管道，声音是沿曲线传播，其传播方向会发生改变，将损失大部分能量，这样，声音进入隔音通气窗500，经过多次转折，和吸音材料的吸收，再从隔音通气窗500出来时，音量可以降低10到20分贝。
优选地，通气窗壳体510的外侧还可以包裹至少一层吸音材料层和至少一层隔音材料层，吸音材料层和隔音材料层间隔设置，这样可以达到更好地隔音效果。再优选地，隔音外壳100也可以由隔音材料制成。
当隔音通气窗500的数量为一个时，进气和出气都是在一个隔音通气窗500中进行，第一通气口501为进气口，第二通气口502为出气口。然而，由于通气通道521是有容积的，可容纳一部分空气，使用者在排气时，废气充满通气通道521，无法完全排出，在吸气时，这些废气又会被吸进隔音外壳100内部，这样，影响了通气效率。
因此，优选地，隔音通气窗500的数量为两个。为保证一个隔音通气窗500只用于吸气，另一个隔音通气窗500只用于排气，该麦克风还可以设置至少两个单向通气阀。每个隔音通气窗500的第一通气口501和\或第二通气口502中安装一个单向通气阀。其中一个隔音通气窗500中的所有单向通气阀均往隔音通气窗500靠近麦头200一侧的方向通气，另一个隔音通气窗500中的所有单向通气阀均往隔音通气窗500远离麦头200一侧的方向通气。这样，其中一个隔音通气窗500的第一通气口501为进气口，另一个隔音通气窗500的第二通气口502为进气口。
为了加快空气的流通，该麦克风还可以设置两个通气风扇，每个通气风扇设于隔音外壳远离麦头200的一侧，并位于每个隔音通气窗500的第二通气口502的上方。其中一个通气风扇向隔音通气窗500靠近麦头200的一侧吹风，另一个向隔音通气窗500远离麦头200的方向吹风。
作为另外的实施方式，该麦克风还可以只设置一个通气风扇，设于隔音外壳远离麦头200的一侧，并位于其中一个隔音通气窗500的第二通气口502的上方，该通气风扇向隔音通气窗500靠近麦头200的一侧吹风，或者向隔音通气窗500远离麦头200的方向吹风。
应当注意，该麦克风也可以只设置一个或者两个通气风扇，而不设置单向通气阀，同样可以达到保证一个隔音通气窗500只用于吸气，另一个隔音通气窗500只用于排气的目的。
该麦克风的隔音外壳100可通过固定带400固设于使用者脸部上，并与使用者口部和脸部之间形成密封的空腔，麦头200位于空腔内，这样，使用者嘴部对准麦头200说话时，由于有隔音外壳100与外界隔离，外界声源不会被麦头200接收，内部的目标声源也不会传输到外部，从而隔离内外声源，避免了相互影响。
图5所示为本实用新型的第二实施例，与上一实施例的不同之处在于，本实施例中隔音通气窗500’不是独立的部件，而是内建于隔音外壳100’上。
隔音外壳100’包括至少两层隔音材料层110’和至少一层吸音材料层120’，隔音材料层110’和吸音材料层120’间隔设置。隔音通气窗500’包括通气通道和两个通气口，两个通气口分别开设于隔音外壳100’的两侧，同样地，两个通气口分别为第三通气口510’和第四通气口520’，第三通气口510’开设于吸音材料层120’上，并且位于隔音通气窗500’靠近麦头200的一侧，第四通气口520’开设于隔音材料层110'上，并且位于隔音通气窗500’远离麦头200的一侧。通气通道开设于任意相邻两层隔音材料层110’之间的一层吸音材料层120’上，其两端分别具有两个通气孔，两个通气孔分别与第三通气口510’和第四通气口520’相连通。优选地，通气通道开设于较内侧的吸音材料层120’上，这样，其外侧具有较多层的隔音材料层110’和吸音材料层120’，可以起到更好地隔音效果。
本实施例中，隔音材料层110’和吸音材料层120’各有两层，麦克风罩设于使用者脸部时的最内层为吸音材料层120’，可以更好地吸收声音，最外层为隔音材料层110’，可以起到更好地隔音作用。该麦克风也包括至少两个单向通气阀和两个通气风扇600’（如图6所示），每个通气风扇600’设于隔音外壳100’远离麦头200的一侧，并位于每个隔音通气窗500’的第四通气口520’的上方。其中一个通气风扇600’向隔音通气窗500’靠近麦头200的一侧吹风，另一个向隔音通气窗500’远离麦头200的方向吹风。

Claims (11)

  1. 一种麦克风，包括用于接收声音信号的麦头和可将声音信号传输到后续处理单元的音频线，所述音频线连接于所述麦头上，其特征在于，所述麦克风还包括固定带、隔音外壳和用于空气对流的隔音通气窗，所述隔音外壳通过所述固定带固设于使用者脸部，并与使用者口部和脸部之间形成密封的空腔，所述麦头固设于所述隔音外壳一侧并位于所述空腔内，所述音频线穿设于所述隔音外壳上；所述隔音通气窗设置于所述隔音外壳上。
  2. 如权利要求1所述的麦克风，其特征在于，所述隔音外壳为曲面结构，其中部向外凸设，当所述隔音外壳固设于使用者脸部时，其中部与使用者口部和脸部形成所述密封的空腔。
  3. 如权利要求1所述的麦克风，其特征在于，所述固定带的两端固设于所述隔音外壳的两端，其中部可套设固定于使用者的头部，所述隔音外壳可罩设于使用者的脸部。
  4. 如权利要求1所述的麦克风，其特征在于，所述隔音外壳上开设有安装孔，所述隔音通气窗包括通气窗壳体和填充内层，所述通气窗壳体安装于所述安装孔中，其外露于所述隔音外壳的两侧分别设有两个通气口，所述填充内层填充于所述通气窗壳体内，其内部开设有通气通道，所述通气通道的两端分别与所述的两个通气口相连通。
  5. 如权利要求4所述的麦克风，其特征在于，所述通气通道为折线通道。
  6. 如权利要求4所述的麦克风，其特征在于，所述通气窗壳体由隔音材料制成，所述填充内层由吸音材料制成。
  7. 如权利要求1所述的麦克风，其特征在于，所述隔音外壳包括至少两层隔音材料层和至少一层吸音材料层，所述吸音材料层和所述隔音材料层间隔设置；所述隔音通气窗包括通气通道和两个通气口，所述两个通气口分别开设于所述隔音外壳的两侧，所述通气通道开设于任意相邻两层隔音材料层之间的一层吸音材料层上，其两端分别与所述两个通气口相连通。
  8. 如权利要求1至8中任意一项所述的麦克风，其特征在于，所述隔音通气窗的数量为两个。
  9. 如权利要求8所述的麦克风，其特征在于，所述麦克风还包括至少两个单向通气阀，每个隔音通气窗的至少一个通气口中安装所述单向通气阀，其中一个隔音通气窗中的所有单向通气阀均往所述隔音通气窗靠近所述麦头一侧的方向通气，另一个隔音通气窗中的所有单向通气阀均往所述隔音通气窗远离所述麦头一侧的方向通气。
  10. 如权利要求8所述的麦克风，其特征在于，所述麦克风还包括两个通气风扇，每个通气风扇设于所述隔音外壳远离所述麦头的一侧，并位于每个隔音通气窗于此侧的通气口的上方，其中一个通气风扇往所述隔音通气窗靠近所述麦头一侧的方向吹风，另一个往所述隔音通气窗远离所述麦头一侧的方向吹风。
  11. 如权利要求8所述的麦克风，其特征在于，所述麦克风还包括一个通气风扇，所述通气风扇设于所述隔音外壳远离所述麦头的一侧，并位于其中一个隔音通气窗于此侧的通气口的上方，所述通气风扇往所述隔音通气窗靠近所述麦头一侧的方向吹风，或者往所述隔音通气窗远离所述麦头一侧的方向吹风。
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