Voice isolator

Abstract

The utility model belongs to the technical field of digital masks, and discloses a voice isolator, which comprises a coating device, an outer shell and earphones, the wrapping device comprises a fitting part and a buckling part connected with the fitting part, the buckling part is connected with the outer shell, and the fitting part is used for being fitted to the face; an earphone placing groove is formed in the inner side of the outer shell, and the earphone is arranged in the earphone placing groove; a clamping groove is formed in the side, close to the buckling part, of the outer shell, and the attaching part is connected into the clamping groove in a buckled mode through the buckling part, so that the wrapping device is connected with the outer shell in a buckled mode. According to the utility model, a user can easily clean the coating device and the outer shell, so that the sanitation is kept and the bacterium breeding is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of digital masks, and particularly relates to a voice isolator. Background Art

[0002] In the design of existing sound isolators, the covering device is connected to the outer housing and the two are integrally designed, so that the covering device and the outer housing cannot be disassembled and cleaned, which easily leads to dust accumulation, dirt accumulation or bacterial growth, affecting the hygiene and cleanliness of the sound isolator. Moreover, the dust or dirt accumulated on the covering device and the outer housing will affect the acoustic performance of the sound isolator, reducing the sound insulation effect or affecting the sound quality. Since it cannot be regularly cleaned and maintained, the sound absorption material in the sound isolator may reduce the sound absorption effect due to dirt accumulation, thus shortening the service life. Content of the Utility Model

[0003] The main purpose of this application is to provide a voice isolator, aiming to solve the technical problem that the existing covering device is connected to the outer housing and the two are integrally designed.

[0004] To achieve the above purpose, the utility model provides a voice isolator, which includes a covering device, an outer housing and a headset;

[0005] The covering device includes a fitting part and a buckle part connected to the fitting part. The buckle part is connected to the outer housing, and the fitting part is used for fitting on the face;

[0006] An earphone placement groove is arranged on the inner side of the outer housing, and the earphone is arranged in the earphone placement groove;

[0007] A card slot is arranged on one side of the outer housing close to the buckle part. The fitting part is snap-connected in the card slot through the buckle part, so that the covering device is snap-connected to the outer housing.

[0008] Further, a groove is arranged on the outer housing, and the groove is located on one side of the outer housing close to the buckle part. One end of the fitting part close to the outer housing is connected to the outer housing through the groove.

[0009] Further, the groove is a continuous closed curve.

[0010] Further, the fitting part includes a first fitting part and a second fitting part connected to the first fitting part, and the width of the first fitting part is less than or equal to the width of the second fitting part.

[0011] Further, a plurality of wrinkles are arranged at the connection between the first fitting part and the second fitting part, and the wrinkles are symmetrically arranged on both sides of the connection.

[0012] Further, the outer housing is rectangular, and a first fixing band and a second fixing band are provided on the short opposite sides of the outer housing, and the first fixing band and the second fixing band are symmetrical to each other.

[0013] Further, the outer housing is composed of a breathable layer, a damping layer, a porous sound-absorbing layer, a mid-high frequency sound-absorbing layer, a high frequency sound-absorbing layer, a low frequency sound-absorbing layer, and a filter layer connected in sequence from the inside out; wherein the breathable layer is a spunbond non-woven fabric, the damping layer is asphalt asbestos wool, the porous sound-absorbing layer is centrifugal glass wool, the mid-high frequency sound-absorbing layer is polyester fiber, the high frequency sound-absorbing layer is ultra-fine glass wool, the low frequency sound-absorbing layer is polyurethane foam, and the filter layer is a polypropylene meltblown cloth.

[0014] Further, the material of the fitting part is any one of silicone, polyvinyl chloride, polytetrafluoroethylene, and resin.

[0015] Further, the voice isolator further includes a control unit, a first microphone, and a speaker provided on the outer housing; the first microphone is connected to the control unit and is used to collect external sound signals and convert them into electrical signals and send them to the control unit; the speaker is connected to the control unit and is used to receive the reverse sound wave signals calculated by the control unit based on the electrical signals and play them.

[0016] Further, the voice isolator further includes a second microphone provided on the outer housing, and the second microphone is connected to the control unit and is used to collect internal sound signals and convert them into electrical signals and send them to the control unit, and send them to an external receiving device through a wireless transmission module on the control unit.

[0017] Beneficial effects:

[0018] A voice isolator of the present utility model includes a covering device, an outer housing, and earphones; the covering device includes a fitting part and a buckle part connected to the fitting part, the buckle part is connected to the outer housing, and the fitting part is used to fit on the face; an earphone placement groove is provided inside the outer housing, and the earphones are arranged in the earphone placement groove; a card slot is provided on one side of the outer housing close to the buckle part, and the fitting part is snap-connected to the card slot through the buckle part, so that the covering device and the outer housing are snap-connected. Therefore, through the split design of snap-connecting the covering device and the outer housing, the covering device and the outer housing can be relatively easily disassembled, enabling the user to easily clean the covering device and the outer housing, maintaining hygiene and reducing bacterial growth. At the same time, the fitting part in contact with the user can be more easily kept clean, thereby improving the comfort of long-term wearing. And by regularly disassembling and cleaning, the sound insulation effect and sound quality of the entire voice isolator can be improved, reducing the accumulation of dirt, and effectively extending the service life of the voice isolator. Brief Description of the Drawings

[0019] Figure 1 is a schematic diagram of the overall structure of a voice isolator according to an embodiment of the present utility model;

[0020] Figure 2 is a schematic diagram of the overall structure of the outer housing according to an embodiment of the present utility model;

[0021] Figure 3 is a schematic diagram of the layered structure of the outer housing according to an embodiment of the present utility model;

[0022] Figure 4 is a partial schematic block diagram of a voice isolator according to an embodiment of the present utility model.

[0023] Wherein:

[0024] 1. Coating device; 2. Outer housing; 3. Card slot; 4. Groove; 5. Control unit; 6. First microphone; 7. Speaker; 8. Second microphone;

[0025] 10. Fitting part; 11. Buckle part; 12. Wrinkle;

[0026] 101. First fitting part; 102. Second fitting part;

[0027] 20. First fixing belt; 21. Second fixing belt;

[0028] 22. Breathable layer; 23. Damping layer; 24. Porous sound-absorbing layer; 25. Medium-high frequency sound-absorbing layer; 26. High-frequency sound-absorbing layer; 27. Low-frequency sound-absorbing layer; 28. Filter layer.

[0029] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiments

[0030] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "a plurality of" is two or more unless otherwise specifically and clearly defined.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0034] Referring to Figure 1 - Figure 2 , the present utility model provides a voice isolator, which includes a covering device 1, an outer housing 2 and a headset;

[0035] The covering device 1 includes a fitting part 10 and a buckle part 11 connected to the fitting part 10. The buckle part 11 is connected to the outer housing 2, and the fitting part 10 is used for fitting on the face;

[0036] An earphone placement groove is provided inside the outer housing, and the earphone is arranged in the earphone placement groove;

[0037] A card slot 3 is provided on one side of the outer housing 2 close to the buckle portion 11, and the fitting portion 10 is snap-connected to the card slot 3 through the buckle portion 11, so that the covering device 1 is snap-connected to the outer housing 2.

[0038] In the above embodiments, the voice isolator includes a covering device 1 and an outer housing 2. The covering device 1 includes a fitting portion 10 and a buckle portion 11 connected to the fitting portion 10. The material of the fitting portion 10 includes, but is not limited to, elastic materials such as silicone, polyvinyl chloride, polytetrafluoroethylene, and resin. When the user speaks, the fitting portion 10 can provide good compensation for the overall deformation of the face. The buckle portion 11 is connected to the outer housing 2. The fitting portion is used to fit on the face. When the fitting portion 10 is fitted on the face, the fitting portion 10 of the fitting portion 10 and the face form a closed curve. Through the closed curve, the sound insulation effect of the voice isolator can be enhanced, the privacy and comfort of the user during use can be improved, the leakage or interference of external and internal sounds can be effectively reduced, and the facial curve and fine contour of the user can be effectively fitted, reducing gaps, thereby improving the sound insulation effect and comfort. At the same time, it can naturally adapt to the minute changes and facial expressions of the face. When the user speaks or makes facial expressions, the fitting portion 10 can deform slightly and maintain a good fitting state, without causing discomfort or failure; the buckle portion 11 is arranged at one end of the fitting portion 10 close to the outer housing 2, and the buckle portion 11 is preferably rectangular and located at the middle position of the fitting portion 10, which helps to evenly distribute the force during connection and avoid local stress concentration; an earphone placement groove is provided inside the outer housing, and the earphone is arranged in the earphone placement groove. When the user wears the digital mask, the earphone can be taken out of the groove for wearing, and the rechargeable battery inside the voice isolator can be used to charge it, so that the user does not need to carry an additional earphone and can simply take out the earphone from the voice isolator for use, reducing the burden of carrying items. Through the built-in rechargeable battery, the user can put the earphone back into the mask for charging when not in use, ensuring that the earphone is always powered. A card slot 3 is provided on one side of the outer housing 2 close to the buckle portion 11, and the card slot 3 is arranged corresponding to the buckle portion 11, so that the card slot 3 is also located at the middle position of the outer housing 2. When the covering device 1 is connected to the outer housing 2, the fitting portion 10 is snap-connected to the card slot 3 through the buckle portion 11, so that the covering device 1 and the outer housing 2 are snap-connected. The covering device 1 and the outer housing 2 are designed as separate parts. Therefore, the covering device 1 and the outer housing 2 can be relatively easily disassembled, enabling the user to easily clean the covering device 1 and the outer housing 2, maintaining hygiene and reducing bacterial growth. At the same time, the fitting portion 10 in contact with the user can be more easily kept clean, thereby improving the comfort during long-term wearing. And by regularly disassembling and cleaning, the sound insulation effect and sound quality of the entire voice isolator can be improved, reducing the accumulation of dirt, and effectively extending the service life of the voice isolator.

[0039] Furthermore, in another embodiment, the covering device can also be divided into an inner layer and an outer layer. The inner layer is made of silica gel material, which fits the face and is washable. The outer layer is made of microporous sound-absorbing material, which is detachably bonded to the silica gel inner layer. The microporous sound-absorbing material can absorb some sound waves, reduce the impact of noise on the wearer, and improve the comfort of the wearer in a noisy environment. The silica gel inner layer can be washed, enabling the user to regularly clean the covering device, maintain hygiene, reduce the growth of bacteria and viruses. The outer layer made of microporous sound-absorbing material helps reduce external noise and provides better sound insulation effect.

[0040] Referring to Figure 1 - Figure 2 , in one embodiment, a groove 4 is provided on the outer housing 2. The groove 4 is located on the side of the outer housing 2 close to the buckle portion 11. One end of the fitting portion 10 close to the outer housing 2 is connected to the outer housing 2 through the groove 4.

[0041] In the above embodiment, a groove 4 is provided on the outer housing 2. The groove 4 is located on the side of the outer housing 2 close to the buckle portion 11 and is formed by enclosing two side walls made of hard materials such as plastics. The depth of the groove 4 is preferably 10 mm - 15 mm. When one end of the fitting portion 10 close to the outer housing 2 is connected to the outer housing 2 through the groove 4, one end of the fitting portion 10 close to the outer housing 2 can be tightly attached to the groove 4. The groove 4 provides a clear positioning point for the fitting portion 10, ensuring the accurate alignment between the fitting portion 10 and the outer housing 2. At the same time, it helps to fix the fitting portion 10, reduce movement or misalignment during use, and improve the stability and sound insulation effect of the entire voice isolator. In addition, the groove 4 is preferably a continuous closed curve, which helps to achieve a more uniform stress distribution at the connection between the fitting portion 10 and the outer housing 2, reduce local stress concentration, provide a better sealing effect, prevent dust, moisture or other foreign substances from entering the internal space, and help reduce the diffraction of sound waves at the edge of the groove 4, reduce the possibility of sound waves propagating along the entire circumference of the groove 4, provide better acoustic sealing, and reduce the leakage of sound waves through gaps or holes, effectively improving the sealing performance of the fitting portion 10 connected to the outer housing 2.

[0042] Referring to Figure 1 - Figure 2 , in one embodiment, the fitting portion 10 includes a first fitting portion 101 and a second fitting portion 102 connected to the first fitting portion 101, and the width of the first fitting portion 101 is less than or equal to the width of the second fitting portion 102.

[0043] In the above embodiments, the fitting part 10 includes a first fitting part 101 and a second fitting part 102, wherein the first fitting part 101 is connected to the second fitting part 102. The first fitting part 101 is used to fit on the bridge of the nose on the face, and the second fitting part 102 is used to fit around the lips on the face, such that the width of the first fitting part 101 is less than or equal to the width of the second fitting part 102. The position of the bridge of the nose is usually relatively narrow, and the narrower first fitting part 101 can reduce the pressure on the bridge of the nose and improve the comfort during long-term wearing. The area around the lips on the face is relatively wider than the bridge of the nose, and the width design of the second fitting part 102 can adapt to facial contours of different widths. By reasonably distributing the width of the fitting part 10, a better seal can be formed around the bridge of the nose and the lips, reducing air and sound leakage. Additionally, the first fitting part 101 and the second fitting part 102 are an integral part, ensuring a seamless transition between the first fitting part 101 and the second fitting part 102, which helps to improve the sound insulation effect and sealing performance.

[0044] Referring to Figure 1 - Figure 2 , in one embodiment, a plurality of wrinkles 12 are provided at the connection between the first fitting part 101 and the second fitting part 102, and the wrinkles 12 are symmetrically arranged on both sides of the connection.

[0045] In the above embodiments, a plurality of wrinkles 12 are provided at the connection between the first fitting part 101 and the second fitting part 102, which are used to compensate for the microscopic local deformation of the face. By compensating for the local deformation of the face, the wrinkles 12 help to form a better seal, prevent the penetration of air and pollutants, and a better sealing performance means less sound leakage, thereby improving the sound insulation effect. At the same time, the wrinkles 12 are symmetrically arranged on both sides of the connection, enabling the fitting part 10 to adapt to facial features of different shapes and sizes, and the symmetrical wrinkles 12 can better adapt to the contours on both sides of the face, providing a more consistent and uniform fitting effect.

[0046] Referring to Figure 1 - Figure 2 , in one embodiment, the outer housing 2 is rectangular, and a first fixing strap 20 and a second fixing strap 21 are provided on the two short opposite sides of the outer housing 2, and the first fixing strap 20 and the second fixing strap 21 are symmetrical to each other.

[0047] In the above embodiments, when the outer housing 2 is preferably rectangular, a first fixing band 20 and a second fixing band 21 are provided on the two short opposite sides of the outer housing 2. The first fixing band 20 and the second fixing band are preferably made of elastic materials such as rubber, and are used to be respectively fixed at the two ears of the head during use. The first fixing band 20 and the second fixing band 21 are symmetrically arranged with each other, and the four corners of the outer housing 2 are rounded chamfers. The design of the symmetric first fixing band 20 and second fixing band 21 helps to evenly distribute the pressure on both sides of the head, avoid local compression, improve the wearing comfort, and at the same time reduce sliding or displacement, ensuring the stability of the entire voice isolator; in addition, the way to fix the voice isolator on the face can also be connected to the head by means of an elastic bandage buckle, enabling the user to quickly and conveniently fix the voice isolator on the head and improving the wearing efficiency.

[0048] Referring to Figure 3 , in one embodiment, the outer housing 2 is composed of a breathable layer 22, a damping layer 23, a porous sound-absorbing layer 24, a medium-high frequency sound-absorbing layer 25, a high-frequency sound-absorbing layer 26, a low-frequency sound-absorbing layer 27, and a filter layer 28 connected in sequence from the inside out; wherein the breathable layer 22 is a spunbond non-woven fabric, the damping layer 23 is asphalt asbestos wool, the porous sound-absorbing layer 24 is centrifugal glass wool, the medium-high frequency sound-absorbing layer 25 is polyester fiber, the high-frequency sound-absorbing layer 26 is ultra-fine glass wool, the low-frequency sound-absorbing layer 27 is polyurethane foam, and the filter layer 28 is a polypropylene meltblown cloth.

[0049] In the above embodiments, in the order from the inside to the outside, the breathable layer 22, the damping layer 23, the porous sound-absorbing layer 24, the medium-high frequency sound-absorbing layer 25, the high-frequency sound-absorbing layer 26, and the low-frequency sound-absorbing layer 27 are stacked on the outer housing 2 in sequence, and appropriate adhesives or stitching techniques are used to fix the various layers of materials together to ensure the stability and durability of the structure. Among them, the breathable layer 22 selects a spunbond non-woven fabric with good breathability and filtration performance as the material of the breathable layer 22, the damping layer 23 uses asphalt asbestos wool with excellent sound absorption performance and damping characteristics as the damping layer 23, the porous sound-absorbing layer 24 uses centrifugal glass wool as the porous sound-absorbing layer 24 to absorb medium and low-frequency sounds, the medium-high frequency sound-absorbing layer 25 selects polyester fiber to manufacture the medium-high frequency sound-absorbing layer 25, specifically for absorbing medium and high-frequency sounds, the high-frequency sound-absorbing layer 26 uses ultra-fine glass wool as the high-frequency sound-absorbing layer 26 to enhance the absorption effect of high-frequency sounds, the low-frequency sound-absorbing layer 27 uses polyurethane foam as the low-frequency sound-absorbing layer 27 to effectively absorb low-frequency noise, and the filter layer 28 is composed of a polypropylene meltblown cloth to form the filter layer 28 for capturing fine particles and providing clean air. By absorbing sounds of different frequencies through different layers of materials, the sound insulation effect of the entire voice isolator is improved.

[0050] Referring to Figure 1 , Figure 4, in one embodiment, the voice isolator further includes a control unit 5, a first microphone 6, and a speaker 7 disposed on the outer housing 2; the first microphone 6 is connected to the control unit 5 and is configured to collect external sound signals and convert them into electrical signals and send them to the control unit 5; the speaker 7 is connected to the control unit 5 and is configured to receive the reverse sound wave signals calculated by the control unit 5 based on the electrical signals and play them.

[0051] In the above embodiment, the voice isolator further includes a control unit 5, a first microphone 6, and a speaker 7, and an installation space or groove 4 is reserved at an appropriate position on the outer housing 2 for placing the control unit 5, the first microphone 6, and the speaker 7. The first microphone 6 is electrically connected to the control unit 5. The first microphone 6 includes, but is not limited to, a dynamic microphone, a condenser microphone, and a diaphragm microphone. The control unit 5 is preferably a digital signal processing unit or a microcontroller unit. The best position is selected outside the voice isolator to install the first microphone 6. This position should be able to effectively capture the surrounding environment sounds while reducing wind noise and echo interference, so that the first microphone 6 collects the sounds in the external environment, and then the collected sound signals are converted into electrical signals, and then processed by the electronic circuit of the noise reduction system and sent to the control unit 5. The speaker 7 is electrically connected to the control unit 5. The speaker 7 is preferably a capacitive speaker 7 or a flat panel speaker 7 and is configured to receive the reverse sound wave signals calculated by the control unit 5 based on the electrical signals, and these sound waves are synchronized with the original sound signals in time but opposite in phase, so that the noise can be cancelled out. The calculated reverse sound wave signals are sent to the speaker 7 inside the voice isolator, and the speaker 7 plays these sound waves. The reverse sound waves emitted by the speaker 7 meet the original noise in the air. Due to the opposite phases, they cancel each other out, thereby reducing the noise entering the user's ears and effectively reducing the interference of environmental noise on the internal sounds of the voice isolator, improving the quality and reliability of voice transmission.

[0052] Refer to Figure 1 , Figure 4 , in one embodiment, the voice isolator further includes a second microphone 8 disposed on the outer housing 2. The second microphone 8 is connected to the control unit 5 and is configured to collect internal sound signals and convert them into electrical signals and send them to the control unit 5, and send them to an external receiving device through the wireless transmission module on the control unit 5.

[0053] In the above embodiment, the voice isolator further includes a second microphone 8, and the second microphone 8 is installed at an optimal position inside the voice isolator, which should be close to the user's mouth to effectively capture the user's voice while reducing the interference of ambient noise. The second microphone 8 is electrically connected to the control unit 5, and the second microphone 8 includes, but is not limited to, a dynamic microphone, a condenser microphone, and a diaphragm microphone. The second microphone 8 is used to collect the internal sound signal and convert it into an electrical signal and send it to the control unit 5. A wireless transmission module, such as a Bluetooth or Wi-Fi module, is integrated in the control unit 5 for wirelessly transmitting the processed electrical signal to an external receiving device. The internal sound signal is collected through the second microphone 8 without leaking to the outside and transmitted wirelessly, which can prevent others from hearing the conversation content, effectively protect the user's privacy, and reduce the risk of being eavesdropped.

[0054] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A voice isolator, characterized in that: including a covering device, an outer shell and earphones; The covering device comprises a fitting portion and a buckle portion connected to the fitting portion, the buckle portion is connected to the outer shell, and the fitting portion is used to fit on the face; An earphone placement groove is provided on the inner side of the outer shell, and the earphone is placed in the earphone placement groove; A clamping groove is provided on one side of the outer shell close to the clamping portion, and the fitting portion is clamped and connected in the clamping groove through the clamping portion, so that the covering device is clamped and connected to the outer shell.

2. The voice isolator according to claim 1, characterized in that: A groove is arranged on the outer shell, and the groove is located at a side of the outer shell close to the buckle portion, and one end of the fitting portion close to the outer shell is connected to the outer shell through the groove.

3. The voice isolator according to claim 2, characterized in that: The groove is a continuous closed curve.

4. The voice isolator according to claim 1, characterized in that: The fitting portion includes a first fitting portion and a second fitting portion connected to the first fitting portion, and a width of the first fitting portion is less than or equal to a width of the second fitting portion.

5. The voice isolator according to claim 4, characterized in that: A plurality of wrinkles are arranged at the connection between the first fitting portion and the second fitting portion, and the wrinkles are symmetrically arranged on both sides of the connection.

6. The voice isolator according to claim 1, characterized in that: The outer shell is rectangular, and a first fixing belt and a second fixing belt are arranged on two opposite short sides of the outer shell, and the first fixing belt and the second fixing belt are symmetrical to each other.

7. The voice isolator according to claim 1, characterized in that: The outer shell is composed of a breathable layer, a damping layer, a porous sound-absorbing layer, a medium- and high-frequency sound-absorbing layer, a high-frequency sound-absorbing layer, a low-frequency sound-absorbing layer, and a filter layer, which are connected in sequence from the inside to the outside; wherein the breathable layer is a spunbond non-woven fabric, the damping layer is asphalt asbestos wool, the porous sound-absorbing layer is centrifugal glass wool, the medium- and high-frequency sound-absorbing layer is polyester fiber, the high-frequency sound-absorbing layer is ultrafine glass wool, the low-frequency sound-absorbing layer is polyurethane foam, and the filter layer is a polypropylene melt-blown cloth.

8. The voice isolator according to claim 1, characterized in that: The material of the bonding part is any one of silicone, polyvinyl chloride, polytetrafluoroethylene, and resin.

9. The voice isolator according to claim 1, characterized in that: The voice isolator also includes a control unit, a first microphone and a speaker arranged on the outer shell; the first microphone is connected to the control unit, and is used to collect external sound signals and convert them into electrical signals and send them to the control unit; the speaker is connected to the control unit, and is used to receive the reverse sound wave signal calculated by the control unit based on the electrical signal, and play it.

10. The voice isolator according to claim 9, characterized in that: The voice isolator also includes a second microphone arranged on the outer shell, which is connected to the control unit and is used to collect internal sound signals and convert them into electrical signals and send them to the control unit, and then send them to an external receiving device through a wireless transmission module on the control unit.

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