862 results about "Soundproofing" patented technology

------ Acoustic Enclosure and Method for Leveling an Acoustic Enclosure The present invention relates to an acoustic enclosure (20) comprising a loudspeaker (21) mounted flush on a front face of the enclosure (20), characterized in that at least one Helmholtz resonator (26) is formed on the front face of the enclosure (20) between each lateral edge of the front face and the loudspeaker (21), the at least one Helmholtz resonator (26) being dimensioned to have a band gap to block the propagation, in the plane of the front face of the enclosure (20), of acoustic waves in the useful frequency band of the loudspeaker (21). Figure to be published with the abstract: Figure 6a

The utility model discloses an indoor tire road noise testing device, which comprises a sound insulation box body, a slope table, a tire driving system and a noise acquisition system, the sound insulation box body is of a closed structure. The slope table is arranged in the sound insulation box body, the slope table is provided with a slope adjusting device, the slope adjusting device is used for adjusting the slope angle of the slope table, and the slope of the slope table is used for placing a pavement test piece; the tire driving system comprises a driving assembly and a tire fixer, the tire fixer is rotatably mounted at the output end of the driving assembly, the tire fixer is arranged in the sound insulation box body and is used for mounting a test tire, and the driving assembly is used for driving the tire fixer to move to drive the test tire to impact the pavement test piece; the noise acquisition system is used for acquiring sound data in the sound insulation box body. The slope table is used for simulating the actual road surface condition, the noise condition of the designed road surface can be tested in the design stage, the actual effect is effectively guaranteed, and the problem that low-noise road surface design is difficult to verify in the design stage is solved.

An apparatus and methods are provided for a quiet pickleball. The quiet pickleball includes a spherical body comprising a sound dampening layer surrounding an inner plastic layer. Holes extend through the spherical body into a hollow interior. The sound dampening layer reduces the noise exhibited when the pickleball is hit with a paddle. The sound dampening layer can be attached to the exterior of a plastic pickleball or can be co-molded or injection molded during forming the pickleball. In one embodiment, the sound dampening layer is a felt pad adhesively attached to the exterior of the pickleball. A die enables cutting the felt pad to a shape that enables covering the exterior of the pickleball. An indexing jig enables attaching the felt pad to the pickleball such that holes in the felt pad are aligned with holes in the pickleball.

A vehicle-mounted external microphone detection device comprises a sound insulation cabin. Mounting frames are oppositely arranged on two sides in the sound insulation cabin; first rails are arranged at the tops of the two mounting frames; a second rail is slidably connected between the two first rails; a first motor for driving the second rail to slide on the first rail is arranged on one side of the mounting frame; a third rail is slidably arranged on the second rail; a second motor is arranged at one end of the second rail to drive the third rail to slide on the second rail; a turntable is slidably arranged on the third track; a third motor is arranged at the upper end of the third rail to drive the turntable to slide on the third rail; a loudspeaker is arranged on the lower side of the turntable; a fan is arranged at the top of the soundproof cabin; an air outlet of the fan is connected with a plurality of air pipes extending to the position, opposite to the mounting frame, in the sound insulation cabin; a plurality of air outlets are formed in the air pipe opposite to the mounting rack. According to the invention, the position of the loudspeaker is randomly adjusted through three-axis movement, so that the accurate control of the sound production position of the sound source and the simulation of any real scene position are realized.

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.

A cornhole board device includes a pair of cornhole boards which each has an aperture extending through a respective cornhole board to facilitate a cornhole bag to pass through the aperture when the cornhole bag is tossed onto the respective cornhole board. A pair of sets of sound insulating layers is each applied to a respective one of the plurality of cornhole boards. Each of the sets of sound insulating layers is comprised of a resiliently compressible material to reduce the intensity of sound produced by a cornhole bag is tossed onto the respective cornhole board. A pair of rigid panels is each positioned on top of a respective one of the pair of sets of sound insulating layers to absorb impact energy of the cornhole bags when the pair of cornhole bags is tossed onto the cornhole boards.

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 communications headset includes one or more directional speakers mounted in left and right temple housings positioned near a wearer's ears, with acoustic channels within the temple housings configured to direct sound waves toward the ear canals. The temple housings form an open-ear configuration, allowing external noises to reach the ears unobstructed. Each directional speaker is acoustically coupled to a contoured channel that delivers focused audio to the wearer's ear with minimal sound wave leakage. An in-ear speaker, magnetically secured and tethered to the temple housing, provides optional noise-isolated listening. A user-controlled selection switch allows a wearer to toggle between open-ear and in-ear modes. The headset also includes a boom microphone, volume controls, and USB charging and communication ports.

The invention belongs to the technical field of high-molecular polymers and functional coatings, and particularly relates to a water-based high-molecular composite sound-absorbing and sound-insulating coating and a preparation method thereof. The composite sound-absorbing and sound-insulating coating comprises the following components in parts by weight: 20-40 parts of silicone acrylic emulsion; 15-30 parts of a porous sound-absorbing filler; 20-40 parts of a high-density sound insulation filler; 5 to 10 parts of cross-linked acrylate coated butyl rubber core-shell emulsion; 1-8 parts of a functional auxiliary agent; and 10 to 25 parts of deionized water. Through cooperative use of the porous sound-absorbing filler, the high-density sound-insulating filler and the butyl rubber elastic damping material, the sound-absorbing coefficient and the sound-insulating amount of the coating can be synergistically improved. Core-shell coating treatment is carried out on butyl rubber through cross-linked acrylate, the adhesive force, flexibility and alkali resistance of the coating can be remarkably improved, and meanwhile the acoustic performance of the coating is also improved.

The invention discloses an audio signal measurement method and device, an electronic device and a storage medium, and relates to the field of audio signal measurement, and the method comprises the steps: deploying a detection microphone nearby a tested device, and arranging a reference microphone in a noise field, so as to synchronously collect a mixed signal containing a test signal and noise, and a pure ambient noise reference signal. After the noise of the two signals is subjected to correlation evaluation and the consistency of noise sources is confirmed, dynamically changing noise components are accurately stripped from the signals of the tested equipment by utilizing real-time noise data acquired by the reference microphone and through an adaptive noise cancellation algorithm, so that pure test signals are restored. Therefore, the problem of non-stationary noise pollution is solved through an active signal processing means instead of depending on imperfect physical sound insulation, and accurate and efficient measurement of the performance of the microphone in a noisy environment is realized.

This invention discloses a sound-insulating PVB film and its preparation method, belonging to the field of PVB film technology. It includes a first PVB film layer, a second PVB film layer, and a sound-insulating layer disposed between the first and second PVB film layers. The sound-insulating layer comprises TPU and TPEE. The PVB resins in the first and second PVB film layers have different hydroxyl values. The different hydroxyl values ​​of the PVB resins in the two film layers enhance adhesion, while also providing better flowability and easier film formation. The sound-insulating layer, made from a mixture of TPU and TPEE, improves weather resistance and impact resistance. The PVB film layer and the sound-insulating layer enhance sound insulation performance through complementary effects. The PVB film layer primarily insulates sound by absorbing sound wave energy and providing damping, while the sound-insulating layer absorbs sound wave energy primarily through its material properties. The combination of the two not only enhances the damping effect on sound waves but also reduces resonance, further enhancing sound insulation performance.

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 invention discloses an urban road dynamic noise traceability evaluation method and system based on digital twinning, and the method comprises the steps: cooperatively collecting noise and road vibration signals through a non-uniform sound pressure sensor array and a vibration sensor, and dynamically compensating sound wave attenuation in combination with environment parameters; voiceprint features are extracted through wavelet packet decomposition, and dynamic parameters such as digital twinborn associated traffic flow and architectural acoustic reflection are constructed; improving a time difference positioning algorithm and fusing vibration spectrum verification to suppress environmental reflection noise; in the digital twin model, sound field distribution is predicted through sound ray tracking, health risks are evaluated based on a frequency band weighting model, and a parameterized sound insulation screen design and traffic flow regulation and control strategy is generated. The system integrates a multi-source sensing module, a digital twin engine module and an anti-interference positioning and decision optimization module, and realizes full-flow intelligentization of noise signal acquisition, feature fusion modeling, anti-interference positioning and treatment scheme generation.

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.

The invention discloses a sound insulation and noise reduction water supply and drainage pipeline, and belongs to the technical field of water supply and drainage pipelines, the sound insulation and noise reduction water supply and drainage pipeline comprises a pipeline body and a connecting mechanism, the pipeline body comprises an outer pipe body, an inner pipe body, a supporting ring and a sealing ring, and an exhaust mechanism is arranged at the top of the outer pipe body and comprises an exhaust pipe, a sealing cover and a one-way valve; the two ends of the outer side of the outer pipe body are fixedly sleeved with fixing rings. The connecting mechanism comprises a front connecting base, a rear connecting base, a connecting frame, a fixing frame and a plug pin. The interlayer space between the inner pipe body and the outer pipe body is vacuumized and reliably sealed, the transmission path of sound in the structure is effectively cut off, outward transmission of noise generated by water flow in the pipe and vibration of the pipe is remarkably blocked in the vacuum state, and the overall sound insulation performance is greatly improved; the core measure is supplemented with the design of the supporting ring and the elastic sealing ring, vibration buffering is provided at a key connecting point, energy is absorbed and dissipated, and excellent environmental noise control is comprehensively achieved.

The invention relates to a manufacturing method of a high-heat-insulation and sound-insulation type PVB (Polyvinyl Butyral) intermediate film for an automobile large skylight, and belongs to the technical field of laminated glass material preparation. A common PVB resin layer A, a high-damping-coefficient sound-insulation resin layer B, a heat-insulation composite resin layer C, a high-damping-coefficient sound-insulation resin layer B and a common PVB resin layer A are prepared into the high-heat-insulation sound-insulation type PVB intermediate film in sequence by adopting a five-layer composite co-extrusion process, a multi-layer structure is adopted, and particularly, the high-damping-coefficient sound-insulation resin layer B is used, so that the propagation of sound waves can be effectively reduced, and the sound-insulation performance of the PVB intermediate film is improved. The large skylight of the automobile can effectively isolate external noise and improve the riding comfort in the automobile during high-speed driving or urban traffic, vanadium dioxide and graphene are compounded through the C-layer heat insulation composite resin, graphene has a large specific surface area, the dispersity of vanadium dioxide can be improved, and the heat insulation performance of the automobile is improved. Vanadium dioxide can improve the reflectivity of near-infrared light when the environment temperature rises.

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 invention relates to a new energy driving shaft abnormal sound detection method, and relates to the technical field of abnormal sound detection, and the method comprises the following steps: arranging a road spectrum collection device: arranging the road spectrum collection device at a vehicle driving shaft for collecting working data of the driving shaft in the vehicle driving process, the working data comprising torque and rotating speed data; road spectrum acquisition: road spectrum acquisition equipment acquires working data of a driving shaft of the vehicle in the energy recovery process; importing the working data into an NVH rack: importing the driving shaft working data acquired by a road spectrum into the HVH rack, and driving a servo motor to reproduce a transient process of an actual sliding working condition; and abnormal sound verification: operating the NVH rack in the sound insulation environment, simulating the working condition of the driving shaft to be tested in the energy recovery process according to the imported working data, and reproducing the abnormal sound of the driving shaft. The method has the effects of reducing the test cost and shortening the test period.

The utility model relates to the technical field of drinking water treatment, in particular to a water purifier with a noise reduction structure, which comprises a filter layer, the filter layer is embedded in the inner wall of a filter, a water receiving pipe is arranged on the outer wall of one side of the filter, and the other end of the water receiving pipe transversely penetrates through the inner wall of a supporting channel. The supporting channels are arranged on inner wall interlayers of the left side and the right side of the soundproof box, a booster pump is in threaded connection with the middle of the bottom wall of the soundproof box, a water outlet pipe is inserted into the water outlet end of the booster pump, and a plurality of damping mechanisms are arranged on an interlayer of the bottom wall of the soundproof box. According to the improved water purifier, the silica gel layer and the compression spring piece can effectively absorb and reduce vibration impact transmitted to the pipe body during operation of the booster pump, the noise level during operation of the booster pump is reduced, the damping mechanism can absorb and slowly release the vibration impact and reduce noise generation, the cavity and the sound insulation sponge reduce vibration transmission, the sound intensity is reduced, and the service life of the water purifier is prolonged. And noise transmission is further reduced.

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 comfortable sound insulation type silica gel earplug, which relates to the technical field of silica gel earplugs, and comprises a first silica gel earplug and a second silica gel earplug, the first silica gel earplug and the second silica gel earplug are both fixedly provided with a fixed ear frame, and one end of the first silica gel earplug and one end of the second silica gel earplug are both provided with air holes. And a sealing plug is tightly attached to the interior of each air hole, a connecting frame is fixedly arranged at one end of each sealing plug, a connecting belt is tightly attached to each connecting frame, a connecting rope is fixedly arranged at the other end of each connecting belt, and a connecting mechanism is arranged at one end of each connecting rope. According to the utility model, through the arrangement of the fixed ear frames and the air holes, and the sealing plugs tightly attached to the interiors of the air holes, various choices can be provided for a user when the earplug is worn, and the first silica gel earplug and the second silica gel earplug can be conveniently connected through the connecting rope, so that the first silica gel earplug and the second silica gel earplug are convenient to store.