25 results about "Noise effects" patented technology

The present invention relates to a lifting stage structure and a noise reduction processing method thereof, including a plurality of stages arranged on the ground. There is a pit seat between the plurality of stages, and a lifting platform is arranged in the pit seat; the lifting platform is composed of a bottom plate, a plurality of telescopic rods and a lifting plate. The bottom ends of the plurality of telescopic rods are fixedly arranged on the top of the bottom plate, and the lifting plate is fixedly arranged on the top ends of the plurality of telescopic rods; a driving assembly is arranged on the bottom plate and is used to drive the telescopic rods to telescopically move, driving the lifting plate to lift and move; a plurality of protection mechanisms are respectively arranged on the stages around the pit seat and are used in cooperation with the driving assembly to implement sealing when a gap is formed between the lifting plate and the stage after the lifting plate rises, preventing people from falling below the lifting plate, and limiting the telescopic rods that extend during the protection process; solving the problem that when the existing stage lifting platform uses methods such as chains, gears and racks for transmission and lifting, certain noise will be generated when the teeth collide with each other during the lifting process, affecting the viewing and listening effects.

The invention relates to the technical field of building construction management, and discloses a noise evaluation method and system for building construction. The acquisition module is used for acquiring noise data of a building construction area and a focused area, psychological state data of constructors and users in the focused area, and construction stage information data of the building construction area; the data analysis and processing module is used for performing data analysis and processing on the noise data, the psychological state data of the constructors and the users in the important attention area, and the construction stage information data of the building construction area, and establishing a noise evaluation model in the construction environment; the early warning module is used for acquiring a noise score in the construction environment according to the noise evaluation model in the construction environment so as to evaluate the noise influence of the building construction environment, and judging whether a noise reduction measure is taken or not so as to carry out noise management; according to the invention, the comprehensiveness of noise evaluation data is improved, and the accuracy of noise evaluation is greatly improved.

The utility model discloses a vibration absorption damping device for a gear box, which comprises a gear box base, a damping mechanism and a lubricating mechanism, the gear box base is fixedly connected with a gear box upper cover, and the gear box base is provided with a first rotating shaft, a second rotating shaft and a third rotating shaft. The damping mechanism is arranged in the gearbox base; according to the vibration absorption damping device for the gear box, vibration is detected through a sensor, current is adjusted through a PLC, the magnetic field intensity is adjusted by changing the current of a magnet exciting coil, and magnetic particles in magnetorheological fluid in gaps can be arranged in the magnetic field direction to form a chain-shaped or columnar structure through the magnetic field intensity; according to the magnetorheological fluid damping device, the viscosity of the magnetorheological fluid is increased, so that damping force is generated, vibration energy is converted into heat energy and consumed, noise generated by vibration is reduced, the working environment of workers is improved, and the noise is effectively prevented from affecting physical and psychological health of the workers.

The utility model relates to the technical field of roofs, and discloses a roofing heat preservation structure which comprises a roofing body, a fixing frame and a fixing frame, the upper surface of the roofing body is in contact with the bottom face of the fixing frame, the outer surface of the fixing frame is in sliding connection with the inner wall of the fixing frame, and the inner wall of the fixing frame is in sliding connection with four limiting columns. The bottom face of each limiting column is fixedly connected with the inner wall of the fixing frame, the inner wall of the fixing frame is fixedly connected with a sound insulation plate, and the inner wall of the fixing frame is fixedly connected with sound absorption cotton. Under the action of the sound insulation plate, a part of sound generated by raindrop impact can be effectively blocked, the sound generated by rainwater impact continues to be diffused inwards after being blocked by the sound insulation plate, and when the sound is diffused to the sound absorption cotton, the sound absorption cotton can absorb a part of noise, so that the sound absorption effect is improved. And meanwhile, noise enters the silencing holes, so that the noise intensity can be further reduced, and the situation that the rest and work of indoor personnel are affected by the noise generated when the surface of the device is hit by raindrops is avoided.

The utility model discloses an ultralow-temperature air-cooled heat pump unit, which belongs to the technical field of air-cooled heat pump units and comprises a case, a compressor is arranged in the case, an evaporator is arranged at the top of the compressor, an air guide pipe is arranged on the surface of the top of the case, and an air suction pipe is arranged on the surface of one side of the air guide pipe. An annular valve clack is arranged on the surface of the top of the air guide pipe, a rotating rod is arranged on one side of the annular valve clack, a servo motor is arranged at one end of the rotating rod, a sound insulation assembly is arranged on the surface of one side of the machine box, and a filtering and purifying assembly is arranged in the air guide pipe. The problem that noise generated in the operation process of the unit affects normal life of people is solved, the practicability of the unit is improved, the unit is suitable for wide popularization, the problem that air which is not filtered possibly affects human health is solved by arranging the filtering and purifying assembly, the heating quality of the unit is improved, and the heating comfort level is guaranteed.

The invention provides a noise elimination method and device, an electronic device and a computer medium, the noise elimination method is applied to the noise elimination device, and the method comprises the following steps: acquiring environmental data of a position where the noise elimination device is located, the environment data at least comprises environment sound and a face image of a person at the position within a preset range; performing image analysis on the face image, and detecting whether the person is in a negative emotion or not; if it is detected that the person is in the negative emotion, detecting whether noise appears in the environment sound; if detecting that the noise appears in the environment sound, processing the noise to obtain a noise signal and a noise direction; generating a noise reduction signal with the same amplitude and opposite phase as the noise signal; and playing the noise reduction signal to the noise direction. The noise reduction signal can be played to eliminate noise, and the noise is prevented from affecting life or work of people.

The utility model discloses a low-noise power transformer in the technical field of transformers, which comprises a transformer body, first radiating fins are fixedly mounted at the front end and the rear end of the transformer body, second radiating fins are fixedly mounted at the left end and the right end of the transformer body, and noise reduction mechanisms are arranged on the outer sides of the first radiating fins and the second radiating fins. The low-noise power transformer is additionally provided with the noise reduction mechanism, the noise reduction mechanism adopts a structure for blocking and reducing noise, the intensity of the noise can be reduced in the noise transmission process, and the situation that sound waves are transmitted to a residential building by a transformer body at a high position is effectively avoided by means of the phenomenon that the sound waves are refracted downwards when making contact with low temperature; under the condition that normal heat dissipation of the transformer body is guaranteed, the noise reduction mechanism blocks and reduces electromagnetic force and mechanical vibration noise generated by the interior of the transformer body, the intensity of the noise can be effectively reduced, and the noise is prevented from affecting daily life of residents.

The utility model relates to the technical field of power transformers, and discloses a low-noise dry-type power transformer which comprises a dry-type power transformer body and a noise reduction outer box, the dry-type power transformer body is fixedly installed on the inner side of the noise reduction outer box, and annular sound absorption ends are arranged on the two sides of the noise reduction outer box. According to the sound-absorbing and noise-reducing box, noise can be conducted into the sound-absorbing and noise-reducing pipe from the annular sound-absorbing end head for sound absorption and noise reduction, the cross-shaped sound-absorbing plate and the rectangular sound-absorbing plate are arranged in the sound-absorbing and noise-reducing pipe, the sound-absorbing and noise-reducing capacity is enhanced, the sound-absorbing and noise-reducing outer cylinder is used for noise reduction and sound absorption, and the noise-reducing type base plate assists in noise reduction and sound absorption in the box body. And the sound-absorbing and noise-reducing pipe is mounted on the annular sound-absorbing end in a sleeving manner, and the sound-absorbing and noise-reducing outer cylinder is mounted at the other end of the sound-absorbing and noise-reducing pipe, so that the overall disassembly and assembly are convenient, the sound-absorbing and noise-reducing capability and the sound-absorbing and noise-reducing effect of the device are excellent, the overall disassembly and assembly are simple and convenient, and the sound-absorbing and noise-reducing device is suitable for popularization and use.

The present disclosure relates to the field of perforated square tube noise technology, and in particular to a design method for reducing the sound pressure level of perforated square tubes and avoiding the defects of curtain wall wind whistles. The present disclosure provides a design method for reducing the sound pressure level of perforated square tubes, step one: blowing perforated square tubes in different cavity states at a wind speed of 7.2m / s, the distances between the punched side of the perforated square tube and the light noise reduction baffle are four types, namely, empty tube, 50mm, 20mm and 0mm, to determine the distance that meets the needs of the appearance design while minimizing the noise, and record the laboratory measured noise values ​​of the square tube under wind at different wind speeds. Then, the perforated square tube and noise parameters specified in step one are used to construct a curtain wall model in the software, and the noise distribution diagram of the curtain wall model under different levels of wind speed is simulated and calculated. The above design method is used to evaluate the noise impact of the curtain wall model formed by the perforated square tube on the urban sound environment under different wind speeds, while achieving the dual optimization goals of the perforated decorative curtain wall being beautiful and having relatively little impact on environmental noise.

The invention discloses a noise reduction construction site house building structure and a construction method thereof, relates to the technical field of constructional engineering, and aims to solve the technical problems that gaps exist, resonance is easy to generate and the noise amplification effect is easy to generate in a current window fixed mounting mode. The building site house comprises a building site house main body, a window is constructed on the plate wall of a house plate on one side of the building site house main body, a window main body is installed in the window, embedded grooves communicating with the four side edges of the window are formed in the side faces of the house plate of the building site house main body, and a connecting block is reserved between every two adjacent embedded grooves. The honeycomb structure can effectively absorb and disperse noise, reduce the sound transmission efficiency and remarkably improve the sound insulation effect of the construction site house, the window body and the construction site house body are tightly connected through cooperation of the connecting pieces, the connecting grooves and the clamping grooves, noise introduction caused by gaps is reduced, and the advantages of being small in connecting gap, stable in structural position, high in practicability and the like are achieved. And the sound insulation effect is improved.

The invention relates to the technical field of audio processing, in particular to an audio processing method and device, a medium and a product. According to the method, in the driving process of a vehicle, a vehicle-mounted terminal can obtain the real-time speed of the vehicle and played audios, and to-be-adjusted audio segments corresponding to the real-time speed of the vehicle and adjustment parameters corresponding to the to-be-adjusted audio segments are determined based on a first corresponding relation. Wherein the first corresponding relation is frequency ranges, influenced by noise, of audios played by the vehicle-mounted terminal at different speeds, and adjustment parameters corresponding to the frequency ranges. Therefore, the played audio can be adjusted based on the adjustment relation corresponding to each to-be-adjusted audio. In this way, the noise suppression effect can be improved by adjusting the audio segments, affected by the noise, in the audio.

The invention relates to a bed frame with a noise reduction box. A motor of an existing bed frame is exposed, so that large noise is generated, and the use experience is affected. The noise reduction device comprises a frame body, a bearing assembly arranged on the frame body and a driving assembly driving the bearing assembly to act, the driving assembly comprises a motor, a noise reduction box completely wrapping the motor is arranged on the frame body, and the noise reduction box is of a multi-layer structure and comprises a sound absorption layer, a vibration reduction layer and a sound insulation layer which are sequentially arranged in a sleeving mode from inside to outside. And noise generated by operation of the motor is prevented from being transmitted outwards. The noise reduction box wrapping the motor is arranged, the noise reduction box is of a multi-layer structure, noise generated by the motor can be effectively prevented from being transmitted outwards, vibration generated by operation of the motor can be effectively absorbed, then the influence on sleep of a user is reduced, and the use experience is improved.

The invention provides a noise reduction method and device, electronic equipment and a wireless charging system. The method comprises the steps that a first electronic device is determined to be in a target scene, the target scene comprises a scene in which a built-in microphone is called to collect target audio and obtain target audio data in the wireless charging process of the first electronic device, the microphone comprises a first microphone, and the first microphone is adjacent to a fan in a second electronic device; and under the condition that the first electronic equipment is in the target scene, the first electronic equipment reduces the rotating speed of the fan based on interaction with the second electronic equipment, and / or eliminates the noise of the first microphone based on a first algorithm, so as to obtain the target audio data after noise reduction. The problem that the obtained target audio data is influenced by the noise of the fan in the second electronic equipment when the first electronic equipment is in the wireless charging process and the target audio needs to be collected can be solved. According to the invention, the noise reduction of the target audio data is realized, and the user experience is improved.

The utility model provides a multifunctional detection rod, and relates to the technical field of noise detection. A noise detector is arranged at the front end of the top of the mounting base, a contactor is arranged at the rear end of the top of the noise detector, the contactor of the noise detector is located under the detection rod body, an adjusting frame is fixedly connected to the rear end of the top of the mounting base, and the adjusting frame is located on the rear side of the detection rod body. And when the bottom position of the detection rod body is separated from the top position of the contactor of the noise detector, the influence of the noise on the detection rod body cannot be transmitted to the noise detector through the contactor of the noise detector, so that the acting force generated by the noise vibration of the detection rod body is reduced. The problems that an existing noise environment detection rod and a noise environment detector are integrally designed, in the process that the noise environment detector is not used, audio frequency received by the noise environment detection rod can be fed back to the noise environment detector, and the use precision of the noise environment detector is reduced are solved.

The invention relates to the technical field of noise reduction equipment, in particular to a novel vacuum pump noise reduction device which comprises a pump body, the bottom of the pump body is fixedly installed on the top of a damping assembly through bolts, the bottom of the damping assembly is fixedly connected with the inner bottom wall of a liquid storage assembly, and a cooling assembly is fixedly installed on the front face of the liquid storage assembly through bolts. One end of the cooling assembly is fixedly connected with the inner wall of the noise reduction assembly, noise generated by the pump body is absorbed by the sound absorption cotton, the noise is converted into heat energy after being absorbed by the sound absorption cotton, the micro water pump is started, cooling liquid in the liquid storage bin is conducted into a cooling cavity of the sealing cover through the micro water pump, and the sound absorption cotton can be cooled through the sealing cover; and meanwhile, the cooling liquid in the liquid storage bin and the cooling liquid in the cooling cavity of the sealing cover can further reduce noise generated by the pump body, so that environmental pollution caused by loud noise generated by the vacuum pump is avoided, field workers are not affected by the noise, and the body health of the workers is guaranteed.

The utility model discloses a waste recovery device for hard metal processing, which relates to the technical field of waste recovery devices and comprises a waste recovery device body, a feed hopper and a discharge box, the feed hopper is mounted on one side of the top of the waste recovery device body, and the discharge box is mounted at the bottom of the front of the waste recovery device body. A protection sound insulation assembly is installed on the outer side of the waste recovery device body, and a filtering dust removal assembly is installed on one side of the waste recovery device body. The protection sound insulation assembly is matched with the filtering dust removal assembly to conduct sound insulation and dust removal on the waste recovery device body, and the problems that an existing waste recovery device does not have the dust removal and sound insulation effects in the using process, and consequently a large amount of dust and noise are generated in the using process of the waste recovery device are solved; the problems that physical health of surrounding personnel is affected, equipment operation is disturbed, and the using effect of the waste recovery device is reduced are solved, and the sound insulation and dust removal effects are achieved.

A continuous positive airway pressure CPAP device featured with active noise cancellation comprises at least a patient interface device, a microphone, a controller, and an audio output device. The patient interface device is fluidly coupled to a base station via a patient circuit for delivery of a pressurized flow of breathable gas. The microphone is acoustically coupled to the CPAP device for capturing regular or random noise generated by or at the CPAP device at least during the delivery of breathable gas. The controller processes the captured noise, via an active noise cancellation ANC algorithm, and generates an ANC output signal. The audio output device, coupled to the patient interface device, generates a CPAP device noise cancellation audio output based on the ANC output signal, wherein the audio output reduces noise effects by eliminating up to a given noise threshold amount of the CPAP device noise.

This application discloses a thermally broken aluminum alloy casement window, belonging to the field of doors and windows. It includes an outer frame, an inner frame installed inside the outer frame via a thermally broken strip, a side frame mounted on the inner wall of the inner frame via two hinges, a sash frame fixedly installed on one side of the side frame, and a glass assembly installed inside the sash frame. Both the inner frame and the sash frame are equipped with Helmholtz resonators. The sound insulation layer filled inside the sash frame effectively isolates external noise and reduces the impact of internal noise. At the same time, some sound energy can be absorbed by the outer tempered glass and the intermediate PVB film, while the air layer of the inner double-glazed glass can further block the transmission of sound waves. Furthermore, the Helmholtz resonator can be used to specifically absorb noise of a certain frequency.

The noise reduction protection room for construction comprises a plurality of supporting bodies, the tops of the supporting bodies are fixedly connected through two longitudinal upper mounting rods, and the bottom of each longitudinal upper mounting rod is connected with a longitudinal lower mounting rod through a plurality of vertical mounting rods; the ends of the two longitudinal upper mounting rods are fixedly connected through the two transverse mounting rods to form a square-shaped frame, and the ends of the transverse mounting rods are fixedly connected with the two longitudinal lower mounting rods through the vertical mounting rods. Side sound barriers are fixed to the first sound barrier mounting area and the second sound barrier mounting area; top sound barriers are fixed to the tops of the supporting bodies. According to the noise reduction protection room for construction, the top sound barrier and the side sound barriers can shield wind and rain for the noise reduction protection room for construction, meanwhile, the top sound barrier and the side sound barriers can block most noise generated in the protection room, a good noise reduction effect is achieved, and the influence of building processing noise on the surrounding living environment can be greatly reduced.

The present invention discloses an active noise reduction Bluetooth headset and its components, which relate to the field of headset technology, including an adjustment module, a noise reduction module, a power amplifier, and a Bluetooth module. The Bluetooth module is used to receive an audio signal and feed back the actual audio signal to the noise reduction module for noise reduction. The noise reduction module feeds back the signal to the power amplifier for output, and the adjustment module is used to adjust the noise reduction output of the noise reduction module and disable the function. After the Bluetooth module receives the audio signal, the external noise signal is collected by an electret for automatic elimination, so as to prevent the environmental noise from affecting the sound quality.

The invention discloses refrigeration equipment. The refrigeration equipment comprises a box body, a press cabin, a refrigeration system and a first noise reduction structure, wherein the box body is provided with a box door; the press cabin is arranged at the bottom of the box body and is close to the box door; the refrigerating system comprises a compressor, a condenser and a condensing fan, and the compressor, the condenser and the condensing fan are arranged in the compressor bin; the first noise reduction structure is arranged on the side, close to the box door, of the press bin and extends in the width direction of the press bin. According to the refrigeration equipment, the space of the box body can be fully utilized, the volume ratio of the refrigeration equipment is increased, and the usable space of the refrigeration equipment is enlarged; and the first noise reduction structure is arranged on the side, close to the box door, of the press bin, noise of the press bin can be effectively prevented from spreading to the front portion of the refrigeration equipment, transmission sound energy is weakened, noise in front of the refrigeration equipment is reduced, and the noise influence on the use environment when the press bin is arranged in front is effectively avoided.

The invention relates to the technical field of assembly type buildings, in particular to a splicing type sound insulation building wallboard and a splicing method. The splicing type sound insulation building wallboard comprises a fixing plate, sound insulation cotton, a dust suction pipe, an interception net and the like; sound insulation cotton for insulating noise is arranged on the fixing plate; the sound insulation cotton is provided with a plurality of dust suction pipes used for adsorbing dust generated by tile cutting. A connecting cavity is formed in the fixing plate; all the dust suction pipes are communicated with the connecting cavity; an intercepting net for intercepting ceramic tile fragments is arranged on the fixing plate; two fixing strips are arranged on each intercepting net; and two connecting strips are arranged on the fixing plate. A space is independently isolated through the sound insulation building board wall to be used for cutting ceramic tiles, noise generated by cutting the ceramic tiles is prevented from influencing other areas, the bottom annular strip drives the dust suction pipe to adsorb dust attached to the sound insulation building board wall, and the probability that when a door is opened for conveying the ceramic tiles, the dust is wasted is greatly reduced. And the probability that dust adhered to the sound insulation building board wall is raised and dispersed in other areas is reduced.

The utility model discloses a drilling machine noise reduction and sound insulation device for engineering construction, and relates to the technical field of drilling machines. The drilling machine noise reduction and sound insulation device for engineering construction comprises a moving structure, a drilling structure and an external power source are arranged at the top end of the moving structure, and a noise reduction and sound insulation structure is arranged on the inner side of the moving structure; according to the drilling machine noise reduction and sound insulation device for engineering construction, the noise reduction and sound insulation structure is arranged, and a ball sleeve arranged at the top end of a sound insulation cover can make sliding contact with a drill rod of a drilling machine device contained in a drilling structure, so that the drilling structure and the sound insulation cover are movably connected, and the drilling structure and the sound insulation cover are made to be relatively independent; the sound insulation cover is arranged on the drilling structure, so that the sound insulation cover does not operate the drilling structure while carrying out noise reduction and sound insulation treatment on the drilling structure, the device not only protects the hearing health of workers on a construction site, but also can reduce the noise influence on surrounding normally living residents, and thus the practicability of the device is improved.

The utility model discloses a TPU (thermoplastic polyurethane) particle uniform dispersing device, which relates to the technical field of TPU particle processing and comprises a base, universal wheels are arranged at the lower end of the base, a dispersing bin is fixedly mounted at the upper end of the base, and a feed port is formed in the front side of the dispersing bin. According to the TPU particle uniform dispersion device, in the particle dispersion process, the sound insulation cavity, the vacuum cavity and the sound insulation cotton conduct sound insulation and noise reduction on noise generated by dispersion, the situation that the noise generated in the particle dispersion process influences the surrounding working environment is avoided, meanwhile, workers can observe the particle dispersion condition through the glass partition plate, and after dispersion is completed, the particles are uniformly dispersed. The two telescopic cylinders are controlled to drive the first transmission case and the second transmission case to ascend, at the moment, the lower end of the second transmission case is far away from the discharging port, blocking of the discharging port is relieved, dispersed particles are rapidly discharged from the discharging port, meanwhile, the dispersing assembly ascends along with the first transmission case and the second transmission case, the particles are prevented from being blocked by the dispersing assembly, and the dispersing efficiency is improved. The conditions of feeding blockage, particle residue and the like occur.