82 results about "Noise isolation" patented technology

The invention relates to the technical field of blast pump detection, in particular to an air suspension blast pump convenient and rapid detection box device which comprises a test box body, a bottom plate, an eccentric wheel set, a switching mechanism, a transmission mechanism and a blast pump mounting mechanism, a box cover is rotatably hinged to the outer side of the test box body, and an operation plate is fixedly connected in the test box body; hydraulic rods are fixedly connected to the inner wall of the box cover. By integrating the test box body, the switchable eccentric wheel group and the sound insulation cover mechanism, multi-working-condition dynamic simulation and noise isolation are realized in single equipment, the problems of low detection efficiency, high cost and data deviation in the prior art are effectively solved, two groups of detection stations are arranged, a control group is conveniently provided, and the detection efficiency is improved. According to the air pump data detection device, the detected air pump data are more accurate and reliable, the detection devices are modularly combined in the test box body, the detection steps are more convenient, the detection efficiency is improved, and the use requirements of people are met.

The invention provides a noise isolation type heat energy transfer heating method and system, and belongs to the technical field of industrial waste heat utilization and heating ventilation air conditioning. The system comprises a waste heat fluid collecting unit, a first-stage heat exchanger unit, a middle heat transfer medium circulating unit, a second-stage heat exchanger unit and a heating circulating water conveying unit which are sequentially connected through pipelines. The system further comprises an acoustic isolation structure unit, a temperature regulation and control unit and a system supporting frame unit which are coupled with the thermal unit structure. The core of the system is that through thermal-acoustic integrated collaborative design, waste heat of heat source equipment is efficiently transferred, meanwhile, effective isolation of overall operation noise of the system is achieved through a multi-mode and multi-physical-field noise suppression mechanism, the technical contradiction that heat energy recovery and noise control are separated mutually in the prior art is solved, and the system is suitable for large-scale popularization and application. And the device is particularly suitable for heating places with strict requirements on sound environments.

The utility model belongs to the technical field of transformer cabinets, and particularly relates to a transformer noise isolation cabinet which comprises a cabinet body and two partition plates symmetrically arranged at the two ends of an inner cavity of the cabinet body, a connecting cavity is formed between the cabinet body and the partition plates, noise reduction exhaust outlets are symmetrically formed in the two sides of the cabinet body, a sound absorption cotton interlayer is arranged in the connecting cavity, and the noise reduction exhaust outlets are formed in the connecting cavity. A plurality of transformer mounting frames are arranged between the two partition plates, sawtooth-shaped noise reduction pads are arranged at the tops of the transformer mounting frames, and elastic mounting plates are connected to the tops of the sawtooth-shaped noise reduction pads; the vibration between the transformer and the installation position of the inner cavity of the cabinet body when the transformer works can be reduced, the noise generated by mutual collision of the hard plate bodies when the hard plate bodies vibrate is reduced, and the collision between transformer parts and the installation plate bodies can be reduced, so that the noise generated when the transformer parts work is reduced; sealing and noise reduction of the cabinet body can be maintained, and meanwhile, the heat dissipation effect of each working part in the inner cavity of the cabinet body can be maintained, so that the protection effect on each working part is improved.

The invention relates to the technical field of voice processing and enhancement, in particular to a noise isolation and target voice enhancement system based on specific voice pre-storage, and the system extracts pre-stored features from a pre-stored target voice database module through collecting environment audio signals in real time and carrying out frame segmentation and frequency domain transformation; adaptive modulation of amplitude and phase of each sub-band signal is realized by combining energy sensing sub-band modulation, then environmental noise energy is identified through dynamic noise isolation and multi-stage suppression is carried out, and finally continuous and clear target voice output is generated through enhanced fusion. The method can achieve the effective enhancement and environmental noise suppression of the target voice in a complex and changeable environment, improves the voice recognition precision and definition, supports the dynamic switching of multiple teachers and multiple classes, adapts to the target voiceprint change, and achieves the high-robustness voice enhancement and noise reduction in teaching, conference and multi-target scenes.

The invention discloses a multi-mode fusion safety protection device in a non-shielding mode. The multi-mode fusion safety protection device comprises a double-box body, a drawer, a white noise sound insulation assembly, an ultrasonic interference assembly, a double-door structure and an incoming call sensing assembly. The double box bodies comprise an outer box body and a middle box body, the middle box body is slidably connected into the outer box body, and an air interlayer is arranged between the outer box body and the middle box body; the drawer is slidably connected into the middle box body through a sliding assembly. The double-door structure is installed at the front end of the drawer and used for sealing the outer box body and the middle box body. Wherein the inner walls of the middle box body and the drawer are respectively provided with a flexible sound insulation layer, and sealing assemblies are respectively arranged between the double-door structure and the front side of the outer box body and between the front sides of the middle box body. White noise and ultrasonic waves can be emitted into the drawer, the noise isolation effect is remarkably improved, information stealing can be effectively prevented, and the normal communication function of a mobile phone is guaranteed.

The invention discloses an acoustic metamaterial suitable for full-band coupling noise reduction of a large-curvature aircraft cabin, and relates to the technical field of aircraft noise reduction, the acoustic metamaterial comprises a core body layer, two panel layers which are located on two sides of the core body layer and have different thicknesses, and two hard frame layers located between the core body layer and the two panel layers, the hard frame layer is formed by attaching a plurality of hard frames with hollow patterns to the inner surface of the panel layer in a discrete distribution mode. The technical problems that when a traditional acoustic material is installed on a large-curvature surface, a supporting structure is complex, the low and medium frequency noise reduction efficiency is low, and full-band noise cannot be covered are solved, the acoustic metamaterial provided by the invention is installed by being matched with the large-curvature surface in an aircraft cabin, meanwhile, a multi-order modal vibration response and structural damping coupling mechanism is utilized, and the noise reduction performance of the acoustic metamaterial is improved. The low-frequency noise reduction limitation is broken through, low-frequency, medium-frequency and high-frequency full-band noise isolation is covered, cutting is convenient, and the cabin space is not occupied.

The utility model relates to a kind of guest room layer backwater circulating water pump noise isolation device, including base, enclosure and top plate, detachably connect between base top and the bottom of enclosure, between the top of enclosure and the bottom of top plate, the circulating water pump to be soundproof is stored in the sealed space formed by the enclosure of base, enclosure and top plate, the left and right sides of enclosure and the top of top plate are respectively provided with the through opening of the pipeline inlet and outlet for circulating water pump connection, detachably connected with sealing cover on through opening, the inside of base, enclosure, top plate and sealing cover is equipped with sound insulation layer;Base top is equipped with heat exchange component, heat exchange component is located in the sealed space formed by the enclosure of base, enclosure and top plate, base bottom is equipped with water storage tank, and water storage tank is communicated with heat exchange component.

The utility model discloses a multi-mode fusion safety protection device in a non-shielding mode. The multi-mode fusion safety protection device comprises double box bodies, a drawer, a white noise generator, a plurality of ultrasonic transmitters, a double-door structure and an incoming call sensing assembly. The double box bodies comprise an outer box body and a middle box body, the middle box body is slidably connected into the outer box body, and an air interlayer is arranged between the outer box body and the middle box body; the drawer is slidably connected into the middle box body through a sliding assembly. The double-door structure is installed at the front end of the drawer and used for sealing the outer box body and the middle box body. Wherein the inner walls of the middle box body and the drawer are respectively provided with a flexible sound insulation layer, and sealing assemblies are respectively arranged between the double-door structure and the front side of the outer box body and between the front sides of the middle box body. White noise and ultrasonic waves can be emitted into the drawer, the noise isolation effect is remarkably improved, information can be effectively prevented from being stolen, and the normal communication function of a mobile phone is guaranteed.

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 application relates to a noise isolation device and its arrangement method for a vehicle cab. The noise isolation device for a vehicle cab includes: a basic sound insulation layer assembly and a reinforcing sound insulation layer assembly; one side of the basic sound insulation layer assembly is attached to the vehicle cab's white frame; the reinforcing sound insulation layer assembly is attached to the basic sound insulation layer assembly on a side opposite to the vehicle cab's white frame, and the reinforcing sound insulation layer assembly is arranged in a predetermined area on the basic sound insulation layer assembly. This application arranges the reinforcing sound insulation layer assembly in a predetermined area on the basic sound insulation layer assembly, which allows for effective noise isolation under specific operating conditions by adjusting the arrangement of the reinforcing sound insulation layer assembly, while also avoiding waste of interior materials.

The invention discloses a low-noise cable inserting stranding machine which comprises a shock absorption and sound absorption structure, a protection and noise isolation structure is installed on the shock absorption and sound absorption structure, the shock absorption and sound absorption structure comprises a sound absorption and heat dissipation assembly fixed to a buffer assembly, and the sound absorption and heat dissipation assembly comprises a fixed base plate with guide sliding grooves formed in the two sides. Meanwhile, a stranding machine body is fixedly installed on the fixed base plate through a fixing piece, a mounting groove for fixedly installing the sound absorption sponge is formed in the surface of the stranding machine body, a through hole block is fixedly installed on one side of the fixed base plate, a matched groove is formed in one side of the through hole block, and a magnet strip is fixedly installed on the inner side of the matched groove; a silent fan is fixed in the through hole block, filter elements are fixedly mounted on the two sides of the through hole block, the buffer assembly comprises a fixing plate, a rubber plate is fixed to the bottom of the fixing plate, and through hole mounting bases are fixedly mounted on the two sides of the fixing plate.

The utility model discloses a green energy-saving insulation board capable of reducing noise, which comprises an insulation board, the surface of the insulation board is respectively provided with a fixing plate, the upper end of the fixing plate is provided with a clamping groove, and the lower end of the fixing plate is correspondingly provided with a clamping plate. According to the green energy-saving heat preservation plate capable of reducing noise, the fixing plates are inserted into the clamping grooves in a penetrating mode through the clamping plates to form a clamping limiting structure, and therefore the clamping plates and the clamping grooves can be used for conveniently and rapidly aligning and assembling multiple sets of heat preservation plates, and meanwhile gaps generated when the heat preservation plates are assembled can be blocked through the clamping plates; the sound insulation damping felt and the fixing plate form a bonding structure through the double faced adhesive tape, so that the noise isolation effect of the heat preservation plate can be further improved through the sound insulation damping felt, and the rubber plate and the heat preservation plate form a clamping limiting structure through the movable groove; and therefore, gaps of the heat preservation plates assembled at the four corners are blocked through the rubber plates, and then the working effect after the heat preservation plates are assembled is guaranteed.

The utility model relates to the technical field of metro decoration construction noise isolation, and discloses a metro decoration construction noise isolation device which comprises a bottom plate and pulley blocks fixedly installed at the lower end of the bottom plate at equal intervals. The bottom plate slides in the stretching direction through the pulley block at the lower end, the inflatable air bag is unfolded, the inflatable air bag is inflated, the inflated inflatable air bag expands due to the inflated air, and at the moment, the inflatable air bag is divided into three layers through the sound insulation plate in the middle of the inflatable air bag; noise can be weakened by the inflatable air bags layer by layer when transmitted outwards through the inflatable air bags, and the noise isolation device for metro decoration construction can be inflated and expanded when needing to be used through cooperation between the inflatable air bags and the sound insulation plates. And when not in use, the sound insulation weight is lighter than that of a traditional fixed plate due to the arrangement of the material, so that the movement is convenient.

A Bluetooth earphone allowing for switching between in-ear and open modes, comprising a sound producing member, an ear hook, and an ear tip, wherein the sound producing member is provided with a sound producing hole, the ear hook is connected to the sound producing member, and in a worn state, the ear hook is configured to wrap around the auricle from the concha of a user so that the sound producing hole is arranged towards the ear canal of the user; the ear tip is detachably connected to the sound producing member and is used for transferring sound passing through the sound producing hole to the ear canal, and when the ear tip is connected to the sound producing member and the earphone in the worn state, the ear tip is configured to fit the ear canal of the user; when the ear tip is separated from the sound producing member and the earphone in the worn state, the sound producing hole is not aligned with the ear canal of the user. By switching the state of the ear tip, the user can select an in-ear mode having a better noise isolation effect or an open mode having a natural sound effect, thereby satisfying audio requirements in different environments.

The invention provides a noise reduction earmuff and method capable of retaining voice. The earmuff comprises an earmuff body of a physical sound insulation structure, a pickup microphone, a microprocessor module, an audio drive circuit and a loudspeaker. The pickup microphone collects an environment sound signal; a blind source separation algorithm and a voice signal discrimination algorithm are implanted into the microprocessor module, and the acquired sound signals are processed, separated and screened by using the algorithms to obtain voice signals; the audio drive circuit filters and amplifies a voice signal and transmits the voice signal to the loudspeaker, and the loudspeaker transmits the voice signal to the interior of the earmuff cavity. On the basis of noise isolation of the physical noise reduction earmuff, a blind source separation technology and a voice signal discrimination method are utilized to complete separation and retention of voice signals, and the voice signals are transmitted into the earmuff, so that the voice signals are retained while noise isolation of the earmuff is realized, and a wearer can directly communicate with other people in voice.

The invention provides a biasing circuit of a voltage-controlled oscillator and the voltage-controlled oscillator, and belongs to the technical field of integrated circuits, and the biasing circuit comprises a current injection unit which is used for providing injection current; the first filtering unit is connected between the power supply voltage end and the control end of the current injection unit; the input end of the noise isolation unit is connected with injection current, the output end is connected to the voltage-controlled oscillator, and the noise isolation unit is used for providing bias current; and the second filtering unit is connected between the input end of the noise isolation unit and the grounding end. The beneficial effects are that the current injection unit is adopted to directly inject current instead of current mirror current, so that the problem of noise deterioration caused by current mirror overturning is avoided; the noise isolation unit can isolate the influence caused by the noise of the current injection unit; the first filtering unit and the second filtering unit can improve the power supply noise suppression capability of the voltage-controlled oscillator on the biasing circuit; all the units cooperate to jointly improve the bias circuit noise of the voltage-controlled oscillator, and the phase noise performance of the voltage-controlled oscillator is improved.

The utility model discloses a steel fireproof door with a noise isolation structure, which comprises a steel fireproof door body, a communication port is arranged on the steel fireproof door body in a penetrating manner, a communication mechanism is arranged between the steel fireproof door body and the communication port, and the communication mechanism comprises a blocking plate hinged on the front side wall of the steel fireproof door body. And the blocking plate is located in the communicating opening, two limiting blocks are fixedly installed on the front side wall of the blocking plate, inserting holes are formed in the two limiting blocks in a penetrating mode, and a limiting frame is fixedly installed on the front side wall of the steel fireproof door body. The steel fireproof door is reasonable in structural design, when the bottom of the steel fireproof door is blocked by a falling object on a ceiling in a fire disaster, a rescuer can open the steel fireproof door from the other side of the steel fireproof door, the rescuer can conveniently and quickly enter the steel fireproof door to clean obstacles and quickly open the steel fireproof door, and normal rescue operation is guaranteed.

The application discloses a noise isolation and explosion-proof window of a liquid rocket engine test stand, which comprises anti-explosion glass, a window frame and a wall body; the anti-explosion glass is a three-layer hollow laminated glass structure; a steel core is fixed in the window frame, and the end of the anti-explosion glass is fixed on the steel core through a fixing piece; the wall body is provided with a pre-embedded piece, and the window frame attached to the wall body is fixed with the pre-embedded piece through a first connecting piece. The noise isolation and explosion-proof window has good sound insulation and noise reduction performance, and can meet the requirements of the window of the liquid rocket engine test stand on sound insulation and noise reduction performance; meanwhile, the installation stability of the noise isolation and explosion-proof window is high, and the integrity of the overall structure of the window body can be ensured when a great impact such as engine explosion occurs.

The invention discloses a local synchronous observation device for a wave-induced sound process and belongs to the technical field of ocean observation. Through an integrated design, local synchronous observation of multiple key elements such as a wave form, underwater bubbles and acoustic response is realized; meanwhile, through the bionic noise reduction design of the buoy body, the multi-stage vibration reduction and noise isolation measures of the hydrophone and elimination of surrounding ship navigation noise interference, the observation signal-to-noise ratio is remarkably improved. The device disclosed by the invention can provide unprecedented technical support for revealing a wave-induced sound mechanism, improving the precision of a marine environment noise forecasting model and carrying out multidisciplinary cross research.

The comparator and successive approximation analog-digital converter can input the first output signal and the second output signal output by the input stage circuit and the third output signal and the fourth output signal output by the noise shaping input stage circuit into the latch stage circuit after respectively carrying out noise isolation, so that the output ends of the input stage circuit and the noise shaping input stage circuit are independent of each other, the kickback noise caused by the shared output ends of the input stage circuit and the noise shaping input stage circuit can be avoided, and the performance of the four-input comparator can be improved.

This invention relates to the field of voiceprint recognition technology, specifically disclosing a federated learning personalized audio monitoring method and system that combines voiceprint recognition. The method includes: extracting feature offsets and marking physiological function deterioration based on these offsets to obtain suspected fatigue segments; establishing a dual-track isolation architecture for read / write isolation by constructing purified fatigue features; collecting speech features for signal-to-noise isolation, verifying identity through core identity deviation and attenuation span, and issuing a degraded monitoring status; triggering federated local fine-tuning under degraded monitoring, and extracting pure upload gradients through an orthogonal projection matrix; and resetting the model by sending gradients to the server for aggregation and issuing low-level instructions to destroy the temporary feature pool after detecting physiological reset. The system includes: a fatigue marking module, an architecture construction module, an identity verification module, a gradient purification module, and a model reset module. This invention is beneficial for improving data purity and identity verification security under fatigue monitoring conditions.

The utility model relates to the technical field of noise isolation, in particular to a building construction noise isolation device which comprises a sound insulation baffle, a plurality of triangular protruding edge strips are arranged on the outer surface of the sound insulation baffle, a containing cavity is formed in the sound insulation baffle, and a liquid adding valve is fixedly connected to the center of the top of one side face of the sound insulation baffle. The sound insulation baffle has the advantages that sound waves conducted to the surface of the sound insulation baffle can be dispersed and reflected back up and down through the triangular convex rib strips on one side face of the sound insulation baffle, then echo and noise increase are prevented, liquid can be injected through the containing cavity, stability is improved, and the sound insulation baffle is convenient to use. Meanwhile, a solid-liquid separation layered structure is formed, so that sound waves need to penetrate through different media when penetrating through, sound wave conduction can be greatly weakened, the noise isolation effect is improved, the position can be conveniently and flexibly moved through universal wheels, a gap between the bottom of the sound insulation baffle and the ground can be effectively pressed and sealed through a flexible rubber sealing plate, and the sound insulation effect is improved. The closed isolation effect is improved.

The utility model relates to the technical field of building safety nets, and discloses a building safety net with inflaming retarding and sound insulation effects, which comprises a safety net shell, a safety protection net is arranged in the safety net shell, an inflaming retarding layer is arranged on one side in the safety protection net, and a sound insulation layer is fixedly connected in the inflaming retarding layer. A plurality of transverse strips and longitudinal strips are installed at the outer end of the safety protection net, supporting bases are arranged at the lower ends of the two sides of the safety net shell, a first sound insulation turning plate is arranged at the lower end of the safety net shell, a second sound insulation turning plate is arranged at the lower end of the first sound insulation turning plate, and a fireproof ground contact plate is arranged at the lower end of the second sound insulation turning plate. The second sound insulation turning plate and the fireproof ground contact plate can rotate around the hinge position of the first sound insulation turning plate, the space of a gap between the device and the ground is greatly reduced, the sealing performance of the device is improved, and then the overall noise isolation and absorption effects of the device are improved.

The utility model relates to the technical field of sound insulation and noise reduction, in particular to a building construction noise isolation device which comprises a shell, a sound absorption plate and sound absorption cotton, the sound absorption cotton and the sound absorption plate are spaced to form a cavity, a plurality of round holes are formed in the side, facing a noise source, of the sound absorption plate, a spiral hole is formed in the bottom wall of each round hole in a penetrating mode, and the spiral holes are communicated with the cavity. Medium-high frequency noise is absorbed through the sound absorption board, sound waves can be reflected in the hole channels for multiple times through the spiral holes, concentrated sound energy is dispersed, then a reflection interface is formed by the sound impedance difference between the cavity (transition area) and the sound absorption board, low-frequency sound wave transmission is blocked through air sound impedance sudden change, and finally the sound absorption cotton absorbs sound in a resonance mode at a specific frequency band. Wide-frequency-band noise reduction (low frequency depends on a cavity (a transition area) and medium-high frequency depends on a sound absorbing material) is achieved on the whole, and the sound energy gathering phenomenon is reduced.

The utility model discloses a two-way flow high-efficiency purification fresh air ventilator, which belongs to the technical field of general mechanical equipment manufacturing, and comprises a shell, wherein the upper end of the shell is clamped with a shell cover, the inner side of the shell and the inner side of the shell cover are respectively fixedly provided with sound insulation layers, the inner side of the sound insulation layer is fixedly provided with a sound absorbing layer, a plurality of isolation plates are fixedly provided on the inner side of the shell, a heat exchange core is fixedly provided on the inner side of the shell, the sound insulation layer and the sound absorbing layer are fixedly provided on the inner side of the shell, noise is absorbed by the sound absorbing layer, and the sound insulation layer isolates the noise to prevent the noise from propagating to the outside of the shell through the shell, thereby achieving the effect of absorbing and isolating noise, and at the same time, the bellows is connected to the ring sleeve to facilitate stretching of the bellows to move the ring sleeve, and to facilitate the fixed connection of the ring sleeve with external connection air ducts at different positions, and the setting of the mounting block and the threaded hole facilitates the bolt limit fixing connection, thereby facilitating the propagation and transportation of inlet and outlet air.

The invention discloses a modular night construction noise isolation device which comprises a plurality of sound insulation modules placed at set installation positions, each sound insulation module comprises a base storage box, an uninflated flexible inflatable sound insulation wall is placed in the base storage box, the bottom of the flexible inflatable sound insulation wall is fixedly connected with the base storage box, and the bottom of the flexible inflatable sound insulation wall is fixedly connected with the base storage box. The flexible inflatable sound insulation wall is communicated with an air valve, at least one mooring rope is fixed to each of the two faces of the flexible inflatable sound insulation wall, ground anchors are fixed to the bottoms of the mooring ropes, and lug plates with bolt holes are fixed to the two ends of the base storage box respectively; the two adjacent sound insulation modules are fixedly connected in the mode that after the bolt holes of the end lug plates of one sound insulation module and the bolt holes of the end lug plates of the other sound insulation module are aligned up and down, connecting bolts penetrate through the bolt holes and are locked through fastening nuts, and therefore the multiple sound insulation modules are sequentially connected. The flexible inflatable sound insulation wall of each sound insulation module is taken out of the base storage box and then is inflated through an air valve to form a noise isolation device.

This utility model relates to the field of noise control technology, and in particular to a transformer noise isolation device, comprising a housing, the housing being a square frame adapted to a transformer, an opening on the front side of the housing for inserting the transformer, and an internal cavity for storing the transformer inside the housing; it also includes a hinge, a soundproof door panel, and a locking assembly, etc. A soundproof door panel is hinged to one side of the front opening of the housing, and an inner groove adapted to the soundproof door panel is provided at the edge of the front opening of the housing. A locking assembly for locking the soundproof door panel is provided on the housing. This utility model, through the sound insulation layer inside the housing, the high-density multi-layer structure of the soundproof door panel, and the application of a rubber sheet, combined with a fastening component, ensures that the rubber sheet is pressed tightly when the soundproof door panel is closed, thereby minimizing noise leakage from the gap between the door panel and the housing, achieving the effect of isolating transformer noise within the housing.

The utility model belongs to the technical field of building noise reduction, and discloses an environment-friendly municipal construction noise isolation barrier which comprises a base and a barrier body, the barrier body is arranged at the top of the base, mounting plates are fixedly connected to the two sides of the bottom end of the base, screw holes are formed in the mounting plates, and a protection seat is arranged at the top end of the base; a fixing assembly is arranged between the barrier body and the base, and a sound absorption assembly is arranged on one side of the barrier body. Through the arrangement of the base and the protection seat, the barrier body is conveniently placed and fixed, through the arrangement of the fixing assembly, the barrier body is conveniently and rapidly fixed, the barrier body is conveniently mounted and dismounted, the dismounting difficulty of the barrier body is reduced, through the arrangement of the sound absorption assembly, multiple absorption is conducted on noise, and the sound absorption effect is improved. And the noise blocking and absorbing effects are improved.

The invention discloses a multifunctional facial makeup instrument, belongs to the field of intelligent wearable equipment, and aims to solve the problems of sound quality distortion of a traditional sound box, positioning effect in a head-mounted earphone head and single function and insufficient experience of existing portable facial massage and hypnosis equipment. The device comprises a facial makeup main body matched with a facial contour, an audio playing module, a facial massage module and an adjustable earphone assembly, the audio playing module eliminates the positioning effect in the head and keeps the high-fidelity tone quality by means of air-guided sound waves of a rear shell sounding horn in combination with facial bone conduction; the face massage module realizes full face massage with adjustable frequency and adjustable force through a vibrator in a facial makeup; the earphone assembly insulates noise, plays guide audio and forms a mental intervention and hypnosis system in combination with massage; the equipment supports independent or synchronous work of three functions, a vibration mode is intelligently matched with an audio frequency band during synchronization, high-fidelity audition, efficient facial rehabilitation and deep mental intervention are realized through multi-mode fusion, and the equipment is comfortable to wear and convenient to use.

The invention discloses a trench structure for isolating a low-noise device and a manufacturing method of the trench structure. The manufacturing method comprises the following steps of providing a substrate and forming a first shallow trench and a second shallow trench on the substrate; depositing in the first shallow trench and the second shallow trench to form a second oxide layer; etching the middle part of the first shallow trench to form a deep trench which passes through the second oxide layer and extends into the substrate; performing ion implantation at the bottom of the deep trench to form a junction separation region; forming a third oxide layer in the deep trench and filling the deep trench with polycrystalline silicon; and depositing a fourth oxide layer and carrying out polishing and grinding to realize global leveling above the substrate, and then forming a groove structure. By combining a manufacturing process with a standard shallow trench manufacturing process, the formed trench structure not only retains the advantage of high integration density of shallow trench isolation, but also realizes deep noise blocking through deep trench isolation, and has an excellent low-noise isolation characteristic.