15 results about "Noise effects" patented technology

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 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 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.

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 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.