1418 results about "Soundproofing" patented technology

A sound-dampening pad for a paddle used in a paddle sport that uses a ball, the pad including a cushion material disposed on a first side of the pad; an adhesive disposed on a second side of the pad configured to attach the pad the paddle; wherein the cushion material reduces the sound of the paddle striking the ball.

------ 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.

The utility model is suitable for the technical field of power supply filters, and provides an adjustable inductance type power supply filter, which comprises a sound insulation shell and an adjusting assembly, the adjusting assembly comprises a plurality of partition plates arranged in the inner cavity of the sound insulation shell side by side, and the partition plates are in sliding fit with the sound insulation shell. Through holes for mutual connection of filters are formed in the plurality of spacing plates in a penetrating manner; the power interface and the load interface are arranged on the outer side of the sound insulation shell and are electrically connected with the corresponding filters respectively; according to the utility model, through the arrangement of the adjusting assembly and the arrangement of the slidable spacing board, the spacing between the cavities can be adjusted, and the position of the filter can be adjusted; a user can finely adjust the filter according to specific power supply signal characteristics and application requirements, and the performance of the filter is optimized; meanwhile, the sound insulation shell is made of an insulating material, so that external noise can be effectively isolated, and the purity of signals is ensured; and the output of the filter is more stable and reliable.

A door assembly provides EMC shielding to provide EMI / RFI protection. The door assembly has an EMC door frame, an EMC door, and EMC seals for maintaining a circuit between the door frame, the floor (e.g., threshold, flooring, etc.), and / or the door. The door assembly may also utilize one or more EMC elements (e.g., EMC tape, paint, adhesive, coatings, caulk, etc.) that may be used to create the circuits between the components of the door assembly and / or with other components of the building (e.g., between the door frame and the wall). The EMC shielding is used to reduce (e.g., limit, block, etc.) the levels of electrogenic interference (EMI) / radio frequency interference (RFI) radiation that is able to pass by the shielding. Moreover, the door assembly also provides improve additional door assembly performance (e.g., sound, weather, air flow, heat, cold, or the like abatement, energy harvesting, or other performance benefits).

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.

An earplug for blocking sound and method of making the same, which includes a planar insert within an earplug of compressible slow recovery foam. A method of attenuating sound by inserting the earplug at an ear canal entry so that the planar insert is tactilely vertical, and pushing the earplug into the ear canal allowing the earplug to flex perpendicular to plana surfaces of the planar insert.

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 discloses a noise and heat effect coupling monitoring and early warning system for an elevator traction machine. The system comprises a sound insulation shell covering the exterior of the traction machine, an audio monitoring assembly arranged on the upper portion of the inner wall of the sound insulation shell, a temperature monitoring assembly arranged on the upper portion of the sound insulation shell and a noise reduction assembly. Noise is isolated through the sound insulation shell, when the noise reaches a set threshold value, the noise reduction assembly generates anti-noise, and the anti-noise and environmental noise are mutually counteracted; when the environment audio frequency reaches a risk value, the audio frequency monitoring assembly gives out an early warning; when the temperature of the traction machine reaches the starting temperature, the temperature monitoring assembly starts the heat dissipation device, and when the temperature of the traction machine reaches the risk temperature, the temperature monitoring assembly gives out an early warning; the invention further discloses a corresponding monitoring method. The noise influence generated by the elevator traction machine is reduced through the sound insulation shell, the sound pick-up, the noise reduction device and the noise reduction chip, heat dissipation is conducted on the traction machine in time through the temperature monitoring assembly, safe use of an elevator is guaranteed, and the false alarm rate is reduced.

The invention relates to the technical field of sound insulation doors, and discloses a Chinese flowering crabapple angle type double-rubber-strip mute door which is provided with a door leaf, and the door leaf is composed of a keel support, a wood-plastic shell layer and a sound insulation layer; wherein the wood-plastic shell layer is arranged on the keel support in a covering mode, and the space between the keel support and the wood-plastic shell layer is filled with the sound insulation layer; the door frame comprises a door pocket plate arranged in a door opening, the side edge of the door leaf is movably connected with one side face of the door pocket plate through a hinge, and a door stop structure is arranged on the other side edge of the door pocket plate. The door leaf body is supported by the wood and the hollow square steel keel, so that the overall mass of the door leaf is reduced, meanwhile, more space of the sound insulation layer is provided, the sound insulation layer is arranged in the door leaf and filled with the sound absorption cotton, the sound insulation effect of the door leaf is improved, the door leaf is composed of various media, and therefore the sound insulation effect of the door leaf is improved. And more energy is consumed when sound waves are conducted in different media, so that a better sound insulation effect is obtained.

1. The name of the product of this design: Earplugs (Silicone Noise Reduction). 2. Purpose of the product of this design: to be inserted into the external auditory canal for sound insulation. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the key points of the design: Design 1 Stereoscopic drawing 1. 5. Designate Design 1 as the base design.

The utility model relates to an indoor sound-absorbing wall structure which comprises a wall body serving as an installation base body, and further comprises a plurality of covering keel pieces which are vertically arranged at intervals and fixed on the indoor side of the wall body, and a plurality of sound-absorbing wall bodies, the flame-retardant base plates are horizontally arranged at intervals, and the flame-retardant base plates and the sides, close to the interior of a room, of the covering keel pieces are arranged in a crossed mode to form a latticed layout; the plurality of wood sound-absorbing plates are sequentially arranged in the vertical direction and are fixed on one side, close to the indoor space, of the flame-retardant base plate through a plurality of sound-absorbing plate mounting pieces, and the adjacent wood sound-absorbing plates are spliced in a mortise and tenon joint manner. The installation mode and the installation and decoration effect are optimized, indoor echoes are reduced, a better attraction effect is achieved, and the sound-proof window is suitable for places with higher sound-proof requirements.

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 relates to the technical field of honeycomb plates, and discloses a decoration soundproof environment-friendly honeycomb aluminum plate which comprises a mounting plate and a honeycomb core, a round seat is mounted in the honeycomb core, a sound absorption chamber is arranged in the middle of the round seat, round holes are formed in the outer surface of the sound absorption chamber, and an abutting mechanism is arranged in the bottom end of the round seat; and the abutting mechanism comprises an abutting rod located at the bottom end of the interior of the round base, and a round hole is formed in the outer surface of the sound absorption chamber. By arranging the round seats, the sound absorption chamber and the round holes, a proper number of round seats can be mounted in the honeycomb core according to the specific requirements of operators, when sound waves are transmitted through the honeycomb core, the sound waves impact the outer surfaces of the round seats and the sound absorption chamber, the transmission path and characteristics of the sound waves are changed, and then sound wave energy is consumed; and in addition, the multiple sound absorption balls are arranged, sound waves are further absorbed, and therefore the sound insulation performance of the whole honeycomb plate is enhanced.

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 grommet includes an umbrella-shaped member that is separate from a grommet body. The umbrella-shaped member has a covering portion that covers an insertion hole of a sound insulator provided on one surface of a vehicle body panel. The covering portion is inclined to increase in diameter toward the sound insulator. The grommet body has an engagement portion that axially locks to a front end of the covering portion, which is the front end of the umbrella-shaped member.

The invention discloses a PVB film with a sound insulation function and a preparation method thereof, and belongs to the technical field of PVB films. Comprising a first PVB film layer, a second PVB film layer and a sound insulation layer arranged between the first PVB film layer and the second PVB film layer. The sound insulation layer comprises TPU and TPEE; pVB resin hydroxyl values in the first PVB film layer and the second PVB film layer are different. The PVB resin hydroxyl values in the two film layers are different, so that the adhesive property can be enhanced, and meanwhile, the film has better flowability and is easier to form a film. The sound insulation layer is prepared by mixing TPU and TPEE, so that the weather resistance and the impact resistance can be improved; the PVB film layer and the sound insulation layer enhance the sound insulation performance through a complementary effect, the PVB film layer mainly absorbs sound wave energy and provides a damping effect to insulate sound, the sound insulation layer mainly absorbs the sound wave energy through the characteristics of the material, and the combination of the PVB film layer and the sound insulation layer can enhance the damping effect on sound waves and reduce the resonance phenomenon; the sound insulation performance is further enhanced.

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.

The invention relates to a focusing type voiceprint acquisition sensor, and discloses a sensor which realizes accurate focusing of equipment operation sound, reduction of environmental noise interference, improvement of sound signal quality, multi-dimensional voiceprint feature extraction and convenience for subsequent equipment operation state analysis through cooperation of an array type multi-direction sound acquisition module and a focusing concave mirror. The device is characterized in that the device is composed of a sound insulation cover, a sound collection hole, a voiceprint collection cylinder, a multi-angle voiceprint collection cylinder, a connecting rod, a sound collection module, a voice processing module and a focusing concave mirror, one end of the voiceprint collection cylinder is arranged on the multi-angle voiceprint collection cylinder and communicates with the multi-angle voiceprint collection cylinder, and the other end of the voiceprint collection cylinder is of an opening structure; the sound insulation cover is arranged at the other end of the voiceprint collection cylinder, sound collection holes which are densely arranged are formed in the sound insulation cover, the sound collection holes are tiny holes, the sound collection holes are close to the upper edge of the sound insulation cover, and the focusing concave mirror is arranged in the voiceprint collection cylinder and corresponds to the sound collection holes.

The utility model discloses a sound insulation earmuff for nuclear magnetic resonance detection, which comprises a head-mounted part and earmuff parts arranged at two ends of the head-mounted part, each earmuff part comprises a fixing block fixedly connected with the two ends of the head wearing part, an earmuff body arranged on the side, close to the head, of the fixing block, and a rear cover arranged on the side, away from the head, of the fixing block. The first adjusting assembly is arranged between the earmuff body and the fixing block and used for adjusting the distance between the earmuff body and the fixing block; and the second adjusting assembly is arranged between the rear cover and the fixing block and used for adjusting the distance between the rear cover and the fixing block. The distance between the earmuff bodies at the two ends can be adjusted through the first adjusting assembly and the second adjusting assembly, and therefore adjustment can be conducted according to the sizes of the heads of different patients, and the fixing frame can effectively fix the heads of the patients during nuclear magnetic resonance examination.

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 assembly type integrally-formed broken bridge energy-saving sound-insulation keel comprises a first plate body and a second plate body located on the right side of the first plate body, the first plate body and the second plate body define a first cavity and a second cavity respectively, the first cavity and the second cavity are each provided with an opening in one side, and a connecting plate body is arranged between the first plate body and the second plate body. An injection molding cavity is defined by the first plate body, the second plate body and the connecting plate body, and an injection molding connecting piece is arranged in the injection molding cavity; rigid connection of the metal keel is broken through the injection molding connecting piece, conduction of a sound bridge and a cold and hot bridge is broken, the sound insulation and energy saving performance of a wall is improved, secondary assembly for a broken bridge is not needed, construction procedures and labor and machine cost are reduced, and the construction efficiency is improved. A three-cavity structure is formed on the whole, multi-layer reflection, absorption and reduction of sound waves are facilitated, the efficient sound insulation effect and the energy-saving performance are further achieved, in addition, the types of components are reduced, the production efficiency and the installation efficiency of the sectional material are improved, and loss is reduced.