542 results about "Soundproofing" patented technology

The invention discloses an assembly type efficient sound insulation cover convenient to install, and relates to the technical field of sound insulation covers. Comprising a plurality of pieces of main body square steel, the main body square steel are linearly and evenly distributed at equal intervals, jacking mechanisms used for improving the bottom supporting strength are arranged on the inner walls of the main body square steel correspondingly, and assembly type connecting mechanisms used for improving the connecting strength and stability are installed in the main body square steel correspondingly; according to the assembly type efficient sound insulation cover convenient to install, main body square steel is inserted and limited in a penetrating and inserting mode through the assembly type connecting mechanism, the defect that limiting performance is insufficient due to the fact that a lap joint mode is directly used in a traditional structure is overcome, the whole assembly process is simpler and more convenient, rubber pads and expansion water stop strips are arranged at splicing joints, and the assembly efficiency is improved. The vibration transmission of equipment can be blocked, the inherent frequency is kept away from the vibration frequency of the equipment, secondary noise caused by resonance is avoided, meanwhile, through gaps are reduced, the noise is prevented from leaking from the insertion hole position, and the problem of noise leakage is solved.

Assemblies, apparatuses, and methods to extract or convey a material from a source of the material may include a vacuum generation and sound attenuation assembly. The vacuum generation and sound attenuation assembly may include a compressor housing having a vacuum source, a cooling system, and a vacuum controller. The vacuum source may include a compressor powered by an electric motor and positioned to cause a vacuum flow between the source of the material, and the vacuum generation and sound attenuation assembly. The vacuum generation and sound attenuation assembly may further include a sound attenuation chamber positioned to receive at least a portion of the vacuum flow from, and attenuate sound generated by, the vacuum source. The compressor housing and sound attenuation chamber of the vacuum generation and sound attenuation assembly may be arranged compactly on a common chassis for ease of transport and deployment.

A head-mountable frame includes a frame body configured with an arcuate shape, and a pair of ear shells connected to both ends of the frame body, respectively. Each of the ear shells is provided with a receiving cavity for installing an earpiece module. The head-mountable frame includes an earmuff assembly provided on the inner side of each ear shell and configured to fit closely to an ear, thereby forming a closed sound transmission cavity between the earpiece module and the ear. The receiving cavity of the ear shell is configured to receive the earpiece module through press-in fit removably. A head-mountable Bluetooth headphone includes the head-mountable frame and a Bluetooth headphone module which can be removably mounted in the receiving cavity through a press-in fit. A helmet includes a helmet body and a Bluetooth headphone module which can be removably mounted in the helmet body.

A sound conditioning device. The device includes a shield comprising an elongated plate having a front face and a rear face. A fastener is coupled to the rear face of the shield, where the fastener is adapted to detachably couple to a boom of a headset having a voice microphone. A sound conditioning material is coupled to the rear face, wherein the conditioning material overlays the voice microphone to encapsulate the voice microphone and suppress ambient sound detected by the microphone.

The utility model discloses a sound insulation door bottom sealer which comprises a bottom cover plate, and a sectional material is installed in the bottom cover plate and used for installing a sealing piece. Eight sealing strips are arranged on the sealing pieces, seven labyrinth sealing cavities are formed by the eight sealing strips on the sealing pieces, the multiple sealing pieces extend to the outer side of the bottom cover plate from the sectional material, and when the bottom cover plate moves downwards to be attached to the ground, the sealing pieces are extruded by the ground to deform, and the sealing effect is achieved. The deformation degrees of the multiple sealing strips in contact with the doorsill stone are different, it is ensured that the sealing strips are tightly attached to the doorsill stone so as to prevent sound transmission, the sealing and sound insulation effects are better, the sealing and sound insulation structure is particularly suitable for being installed at the position where a lower doorsill cannot be arranged, and the graphite pad is used for enabling vertical movement between the sectional material and the bottom cover plate to be smoother and more stable due to the small friction coefficient; the service life is prolonged, and the mute effect can be achieved; the section bar and the bottom cover plate are connected and fixed through a spring piece and a screw, and the section bar can be conveniently detached from the bottom cover plate.

A duct includes a duct body. The duct body defines an inlet, an outlet, and a channel connecting the inlet and the outlet. The duct body is configured to direct gas flowing within the channel from the inlet to the outlet. The duct body further defines an opening located between the inlet and the outlet. The duct also includes a noise attenuator. The noise attenuator includes sound-absorbing material covering the opening. The sound-absorbing material has an outer face in direct contact with an external environment of the duct body. The sound-absorbing material is configured to dissipate acoustic energy within the channel.

The utility model discloses a structure-enhanced mute miniature speed-reducing planetary gear box which comprises a box body, a planetary gear ring and a planetary gear assembly. An accommodating cavity is formed in the box body; the planetary gear ring is fixed in the containing cavity, and the planetary gear ring and the planetary gear rotate in a meshed mode to drive the support shaft to rotate; an isolation cavity is formed between the outer wall of the planetary gear ring and the inner wall of the containing cavity, the purpose of forming the isolation cavity through the double-layer structure is to isolate sound from being transmitted outwards, the sound insulation effect is achieved, sound absorption sponge can be assembled in the isolation cavity, and when the sound requirement standard is higher, the sound absorption sponge can be assembled in the isolation cavity to absorb sound, and the better mute effect is achieved. The box body is made of the zinc alloy material, so that the structural strength of the product is effectively enhanced, the planetary gear ring is made of the plastic material, the isolation cavity is formed between the outer wall of the planetary gear ring and the inner wall of the containing cavity in a matched mode, and the sound absorption sponge can be placed in the containing cavity, so that noise generated during operation is effectively reduced, and the silence effect is achieved.

The invention relates to the technical field of composite materials, in particular to a sound-insulation and heat-insulation composite material and a preparation method thereof.Multiple modified filler components with special structures and performance are introduced into the composite material, and a good sound-insulation and heat-insulation effect is achieved through the synergistic effect; modified hollow glass beads in the modified filler component have a hollow structure, and the structure can effectively block the transmission of sound and heat and play a role in sound insulation and heat insulation; the sulfur-loaded modified multi-walled carbon nanotube has a unique tubular structure, can increase the scattering and reflection paths of sound waves and heat flow in the material, and reduces the conduction efficiency of sound and heat; the nano silicon dioxide modified graphene oxide has a layered structure, and a large number of tiny pores can be formed between layers, so that transmission of sound and heat is further hindered; meanwhile, cesium tungsten bronze nano-powder is selected as the PVC heat insulation agent, and the substance has excellent optical performance and can reflect and scatter infrared rays and reduce heat transfer through radiation.

The utility model provides a noise reduction type air compressor, and belongs to the technical field of air compressors. The air compressor solves the problems that an air inlet of an existing air compressor in the market is not provided with a dust-proof structure, more dust easily enters the air compressor along with air when the air compressor is used, the air compressor is damaged, and the service life of the air compressor is shortened. The noise reduction type air compressor comprises an air compressor body, an air inlet pipe and an air outlet pipe are arranged on the air compressor body, a sound insulation cover is fixedly arranged on the outer side of the air compressor body, a protective shell is arranged on the outer side of the sound insulation cover, an end opening of the air inlet pipe is located in the protective shell, a first dustproof net is fixedly arranged on the protective shell, and two symmetrical movable shells are fixedly arranged on the outer side of the sound insulation cover; the air compressor has the advantages that dust entering the air compressor body is reduced, damage of the dust to the air compressor body is reduced, and the service life of the air compressor body is prolonged.

The utility model relates to the technical field of aluminum bamboo wood veneers, in particular to a fireproof composite silencing aluminum bamboo wood veneer for a multimedia space, which comprises an aluminum honeycomb core layer arranged in an aluminum layer, silicon dioxide aerogel is filled in the aluminum honeycomb core layer, heat insulation and silencing can be achieved, and a graphene fireproof coating expands after meeting fire, so that the fireproof composite silencing aluminum bamboo wood veneer is formed. And finally, water vapor is blocked through the PET film to enter the bamboo base layer, and the fireproof, sound-proof and damp-proof functions are achieved at the same time.

This utility model discloses a negative pressure compressor silencer made of composite sound-absorbing material, including a negative pressure fan body and a silencer pipe fixedly installed on the air inlet end of the negative pressure fan body. An air inlet channel is fixedly installed on the inner wall of the silencer pipe, and a primary noise reduction mechanism is provided on the inner wall of the air inlet channel near the pipe opening. The primary noise reduction mechanism includes an air inlet cylinder fixedly installed on the inner wall of the air inlet channel, and multiple air inlets are opened on the outer wall of the air inlet cylinder. This utility model, through the inner ring silencer cylinder, outer ring silencer cylinder, and silencer ring cylinder of the primary noise reduction mechanism forming a multi-stage sound absorption structure, utilizes the cooperation between the silencer holes and the annular cavity to allow sound waves to reflect and diffract between different cavities, effectively absorbing mid-to-high frequency noise. The coaxial and annular array distribution design of the air inlets guides the airflow to enter evenly, reducing the generation of eddy noise. The composite structure of the perforated metal cylinder and the sound insulation felt further blocks the transmission of noise, improving the broadband noise reduction effect.

To provide a method of manufacturing a sound insulation structure in which handling of a sound insulation sheet member is easy and sufficient adhesiveness can be secured.SOLUTION: A method of manufacturing a sound insulation structure 100 having a sheet part 10, a sound insulation sheet member 1 having a plurality of projections 11 provided on a first face of the sheet part, an adherend 2 provided on a second face 10b on the opposite side of the first face 10a of the sheet part, and an adhesion layer 3 provided between the sound insulation sheet member and the adherend includes: a preparation step for preparing a first jig 30 having a plurality of insertion parts 31 into which the projections are inserted; an installation step for inserting the projections into the insertion parts and installing the sheet part of the sound insulation sheet member on an installation face 32 of the first jig positioned on one side in the insertion direction of the projections; an application step for applying adhesive 4 to the second face of the sheet part provided in the first jig and forming the adhesion layer; a bonding step for bonding the adherend to the second face to which the adhesive is applied; and a jig removal step for removing the first jig from the sound insulation sheet member to which the adherend is bonded.SELECTED DRAWING: Figure 6

This utility model discloses a sealed, energy-saving, and soundproof aluminum alloy door and window, including a wall and a window frame. A protruding frame is fixedly connected to one side of the window frame, and a slope is fixedly connected to the inner side of the bottom end of the protruding frame. A guide rod is fixedly connected to the bottom end of the protruding frame. A rubber strip is in contact with the side of the wall near the protruding frame, and a pad is in contact with the side of the rubber strip. The pad is in contact with the wall, and a guide groove is opened on the upper side of the pad. Drainage holes are evenly opened on both sides of the guide groove. A connecting plate is fixedly connected to one side of the pad, and a positioning bolt is inserted into the connecting plate. The positioning bolt is threaded to the wall. A groove is opened on one side of the pad, and a protrusion is fixedly connected to the other side of the pad, with the protrusion corresponding to the groove. This utility model, by setting a protrusion and a slope on one side of the window frame to cooperate with the pad, and connecting it to the wall with a positioning bolt, and by improving the stability of the pad through an adjusting rod and a pressure plate, can guide rainwater at the bottom of the window, reduce the contact between the wall at the bottom of the window and rainwater, reduce wall soaking, and improve the user experience.

The utility model relates to the technical field of isolation DC power supplies, and discloses a low-noise industrial special isolation DC power supply, which comprises a shell and a sound absorption mechanism, two sides of the shell are movably connected with connecting plates, the inner side of the shell is movably connected with the sound absorption mechanism, and the sound absorption mechanism comprises a sound insulation felt. The bottom and one side of the deadening felt are of a through structure, the inner wall of the deadening felt is movably connected with a supporting grid, the section of the supporting grid is in a T shape, the supporting grid is of an inwards-concave structure, the interior of the supporting grid is movably connected with sound-absorbing cotton, and the sound-absorbing cotton and the inwards-concave grid are matched with each other to form a wrapping structure. Energy of noise sound waves is absorbed through the porous structure of the sound absorption cotton, reflection and propagation of sound are reduced, meanwhile, noise is converted into heat energy through internal reflection after being absorbed by the sound absorption cotton, the heat energy is dissipated to the shell through the sound insulation felt for heat dissipation, and the noise reduction effect can be improved through the shell and the sound absorption mechanism.

The invention relates to the door and window sector and concerns a glass wall for internal partitions capable of offering high soundproofing performance. Said glass wall (1) for internal partitions is adapted to close an opening of a wall to separate two contiguous rooms, and comprises: a frame (2) adapted to be fixed to sides of said opening; a first glass sheet (3) and a second glass sheet (4), surrounded by said frame (2), arranged facing and spaced from each other to provide a sealed unit (5), Said frame (2) comprises a first frame (12) that surrounds said first glass sheet (3) and a second frame (22) that surrounds said second glass sheet (4), where said first (12) and second (22) frame comprise solid wood elements and are spaced from each other defining an air space (6) adapted to house a multilayer composite panel (7) of another kind, positioned in contact with said first (12) and second (22) frame, adapted to facilitate soundproofing of the glass wall (1).

The utility model discloses a movable assembly line soundproof room which comprises a shell, a passing door is hinged to the front side wall of the shell through hinges, Foma wheels are evenly distributed on the lower side face of the shell, a rear observation window is arranged on the rear side wall of the shell, side observation windows are arranged on the left side wall and the right side wall of the shell respectively, and the movable assembly line soundproof room further comprises a soundproof channel. The sound insulation channel comprises channels and adjustable partition plates, the channels are arranged on the left side wall and the right side wall of the shell respectively and communicate with the shell, the adjustable partition plates are arranged at the ends, away from the shell, of the channels, and the sound insulation channel further comprises a sliding plate, a sliding groove, a reaming nut and an adjusting groove. The front side and the rear side of the end, away from the shell, of the channel are each provided with a sliding plate, the sound insulation channel further comprises a bolt, and according to the movable assembly line sound insulation chamber, the width-adjustable sound insulation channel has flexibility and can be matched with various assembly line products, and accurate butt joint of the sound insulation chamber and the assembly line products is guaranteed.

1. The name of the design product: the main body of earplug. 2. The use of the design product: for plugging into the external auditory canal to isolate sound. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1. 5. Other circumstances that need to be explained: the design is a partial design, the part covered by the blue translucent layer in the design picture is not the part to be protected, and the part not covered by the blue translucent layer is the part to be protected.

The invention relates to the technical field of pile foundation detection, in particular to a pile foundation detection counter-force device which comprises a support, a first clamping rod is fixedly connected to the support, a second clamping rod is arranged on the side, close to the first clamping rod, of the support, a detector is fixedly connected to one side of the second clamping rod, and a conical block is fixedly connected to the lower side of the support. A connecting plate is arranged on the outer side of the bracket; the inner side of the connecting plate is fixedly connected with a sound absorption piece. The connecting plate and the support are quickly limited together through the mounting mechanism, so that the sound absorption parts are neatly arranged around the support in a surrounding mode, directional sound absorption space can be formed when the sound absorption parts are neatly arranged outside the support in a surrounding mode, noise of a specific frequency is absorbed through the sound absorption materials, superposition with excitation signals is reduced, misjudgment of the sensor is avoided, and the detection accuracy is improved. The technical problems that the pile foundation detection counter-force device is affected by surrounding noise sources in the construction peak period, sound insulation protection is not conducted on a detection composite head, surrounding noise is prone to being overlapped with excitation signals, and misjudgment of a sensor is prone to being caused are solved.

This invention discloses a low-frequency noise reduction and sound insulation device for industrial applications, belonging to the field of noise control technology. The device includes an outer soundproof cover, an inner composite sound-absorbing structure, and an active noise control system. The outer soundproof cover is constructed of high-density board. The inner composite sound-absorbing structure is located on the inner wall of the outer soundproof cover and includes an acoustic metamaterial layer and a micro-perforated plate layer, which are spaced apart to form a first resonant cavity. The active noise control system includes: an error microphone embedded in the inner wall of the outer soundproof cover; a controller electrically connected to the error microphone; and a secondary sound source electrically connected to the controller and installed on the inner wall of the outer soundproof cover. This invention achieves broadband passive sound absorption through the composite structure of acoustic metamaterial and micro-perforated plate, providing a high signal-to-noise ratio environment for the active control system. Furthermore, the active control system based on the FxLMS algorithm precisely cancels residual low-frequency line spectra, achieving efficient and stable low-frequency noise reduction.

The utility model discloses a water pump assembly and a therapeutic apparatus, and relates to the technical field of medical equipment, the water pump assembly comprises a water pump, a sound insulation cover and sound absorption cotton; the water pump is arranged in the soundproof cover; the sound-absorbing cotton is attached to the inner wall of the sound-proof cover, and a reflecting part is arranged on the side, facing the water pump, of the sound-absorbing cotton and used for reflecting noise emitted by the water pump. Through multiple sound absorption and sound insulation processing of the reflection part, the sound absorption cotton and the sound insulation cover, the volume of noise transmitted to the outside by the water pump assembly is greatly reduced, so that the working efficiency of the whole therapeutic apparatus is improved, the service life of the therapeutic apparatus is prolonged, and the therapeutic experience of a user is improved.

This invention relates to the field of glass interlayer film technology, specifically to an interlayer film for glass that combines heat insulation and sound insulation properties, its preparation method, and its application. The preparation steps include: S1. Preparation of an anti-shrinkage modifier; S2. Mixing PVB resin powder, plasticizer, anti-shrinkage modifier, modified sound and heat insulation microspheres, auxiliary modifier, and UV absorber UV-326 at room temperature until homogeneous to obtain a composite mixture; S3. Feeding the composite mixture into a co-rotating twin-screw extruder for melt extrusion, flowing out through a T-die, calendering and cooling with a three-roll calender, and then cutting and winding it online to obtain the interlayer film. The synergistic effect of the modified sound and heat insulation microspheres, anti-shrinkage modifier, and auxiliary modifier in this invention, achieving deep synergy in structure, function, and interface, solves the industry technical bottleneck of traditional PVB interlayer films where sound and heat insulation are difficult to achieve simultaneously, and performance and durability are mutually restrictive. This provides an innovative glass interlayer film that combines high performance, high durability, and high processability.

The utility model relates to the related technical field of sound insulation wall structures, and discloses a wall structure with a sound insulation function, which comprises a base layer wall, a first damping layer, a main sound insulation layer, a Helmholtz resonant cavity, a second damping layer and a facing layer, and a conical sound absorption wedge array is arranged in the Helmholtz resonant cavity. The sound insulation index of sound waves can be improved through the arrangement of the main sound insulation layer, and an effective air flow resistance optimization structure can be formed along with the arrangement of the conical sound absorption wedges in the Helmholtz resonant cavity, so that the aim of effectively absorbing sound is ensured; and through the arrangement of the first damping layer and the second damping layer, the inherent frequency of the wall body can be shifted to a non-sensitive frequency band, so that the vibration energy is attenuated, and the effective sound insulation purpose of the whole wall body structure is achieved.

The utility model relates to a sound insulation and shock absorption structure of a guest room wall body, which comprises a wall surface hanging piece, a hanging rod, shock absorption and sound insulation pads, a plate hanging piece and a wall surface plate, the wall surface hanging piece is arranged on the wall body through a fastening piece, the hanging rod is hung on the wall surface hanging piece, the shock absorption and sound insulation pads are arranged according to a wavy line shape and sleeved on the hanging rod, the plate hanging piece is hung on the hanging rod, and the wall surface plate is arranged on the wall surface hanging piece. The wall panel is installed on the panel hanging piece through the fastening piece, and the shock absorption and sound insulation pad is clamped between the wall panel and the wall body. The damping and sound insulation pad has the advantages that the damping and sound insulation pad is hung on the wall through cooperation of the hanging rod and the wall surface hanging piece, the damping and sound insulation pad is arranged in a wavy line shape, a silencing cavity is formed, sound waves can be absorbed easily, and the elastic deformation space is increased to improve the damping effect; the wall surface is hung on the wall body through cooperation of the plate hanging piece, the hanging rod and the wall surface hanging piece, the wall surface plate is prevented from being directly and fixedly connected with the wall body or the damping and sound insulation pad, a damping activity space is provided for the wall surface plate, and sound and vibration waves are prevented from being transmitted between adjacent hotel guest rooms on the same layer through the wall body.

1. Name of the product in this design: Noise-isolating earplugs (adjustable donut style). 2. Purpose of this design: for use as an earplug worn on the ear to isolate sound. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This utility model relates to the field of sound insulation technology, and discloses a soundproof shell and air conditioning unit, including a shell, a rubber damping layer disposed on the inner side of the shell, and a low-frequency sound-absorbing layer and a high-frequency sound-absorbing layer. By placing the low-frequency sound-absorbing layer between the rubber damping layer and the high-frequency sound-absorbing layer, this utility model allows the rubber damping layer to buffer low-frequency vibrations during air conditioning unit operation, reducing the low-frequency vibration energy transmitted to the shell and lowering low-frequency noise generation. The low-frequency sound-absorbing layer, positioned adjacent to the rubber damping layer, can promptly receive and absorb the low-frequency vibration energy buffered by the rubber damping layer, resulting in more thorough low-frequency noise reduction and improving the overall noise reduction effect of the soundproof shell. This effectively prevents the shell from vibrating and amplifying low-frequency noise. Simultaneously, the high-frequency sound-absorbing layer absorbs and blocks high-frequency noise, ensuring that noise in different frequency bands (low, medium, and high) is effectively absorbed and blocked.

The utility model relates to soundproof door technical field, concretely is a safety door with sound insulation effect, including outer door panel, the both sides of arc shaped recess are established in the middle part of outer door panel front, and the distance between arc shaped recess is equal division, the two corners of outer door panel front all are provided with buffer assembly, the back of outer door panel is fixedly connected with inner door body. The utility model uses, and the mutual plug -in combination of mortise and tenon column and mortise is set up to the lower part two inclined planes and the plane of vacancy will constitute the included angle, through the setting of included angle, can play the effect of differentiation and barrier sound, namely, when the sound penetrates to the surface of barrier block through vibration, will be under the obstruction of inclined plane, reflect the sound, and through the sound absorption cotton, the residual sound wave energy of reflection is absorbed again, if still not be able to absorb completely, the plane of vacancy of barrier block will undertake the remaining sound wave energy, and carry out the reflection again.

This invention belongs to the field of building materials technology, specifically disclosing a sound-absorbing porous foamed concrete composite board and its preparation method. Using foamed concrete as the substrate of the composite board effectively solves the problem of poor environmental performance of traditional sound insulation materials. Compared with materials such as polystyrene and sound-absorbing rock wool, it does not require a large amount of energy for preparation and can utilize recycled raw materials. It does not produce toxic powder after aging, reducing harm to the air environment and human health, while also avoiding the flammability hazards of traditional materials. The closed-cell sound insulation layer's sealed pores can block direct sound wave penetration, achieving basic sound insulation. The sound-absorbing pores of the porous sound-absorbing layer, combined with the interconnected channels, introduce incident sound waves into the interior. Energy is dissipated through reflection and friction within the channels, forming a dual protection of "sound absorption and sound insulation." This solves the core problem of poor sound insulation performance of traditional concrete and compensates for the short lifespan of traditional sound insulation materials, extending the overall service life of the board.

The invention discloses a whole-house fresh air system and a whole-house five-constant system for introducing fresh air through an active vertical air duct, after fresh air is fed into a public space from a single-tube-pass two-way flow whole-house fresh air system, the fresh air is introduced into the public space under the pushing of a pressure difference jointly formed by the positive pressure of the public space, the suction negative pressure in a room and the pumping and discharging of a relay power point position; and the fresh air is fed into a room through a bent conveying channel formed by the first air opening, the second air opening and the air duct flow channel of the active vertical air duct, and fresh air replacement is achieved. Moreover, the first air opening and the second air opening of the active vertical air duct are oppositely arranged in an up-down staggered manner, so that sound waves in a living room aisle and a room can enter and exit from the room through the whole course and twice large-angle turning of the vertical air duct, and fresh air in a public space can be guided into the room while the inside and the outside of the room are communicated; three-dimensional flowing of fresh air flow is effectively driven, sound wave transmission inside and outside a room is blocked, and the sound insulation effect is good.

The invention relates to an ear sound production instrument, a detection method, a medium and computer equipment, and the instrument comprises an ear canal detection probe which is suitable for being inserted into an ear canal of a tested object and forms sealing fit with the wall of the ear canal, and the ear canal detection probe comprises an acoustic output unit which transmits an audio signal to the ear canal, the acoustic input unit is used for receiving a reflected wave of the audio signal in an ear canal; the sound insulation cover is arranged outside the auditory meatus detection probe in a sleeving mode and covers the auditory meatus detection probe and an auditory meatus opening so as to weaken noise and improve the signal-to-noise ratio of reflected waves, otoacoustic emission detection can be carried out without depending on a special sound insulation room environment, and the accuracy and clinical applicability of a detection result are guaranteed.