63 results about "Wind noise" patented technology

This invention provides a method and system for adjusting a vehicle audio system, which includes multiple speakers. The adjustment method includes: acquiring vehicle status information and the initial volume of each speaker, wherein the vehicle status information includes window opening status information, which includes window opening area information and window opening position information; determining the compensation volume of each speaker based on the vehicle status information; determining the target volume of each speaker based on the compensation volume and the initial volume; and adjusting the volume of each speaker based on the target volume. This method achieves targeted adjustment of each speaker based on the combined window opening area and position, avoiding the impact of wind noise generated after the windows are opened on the speaker volume, and effectively improving the passenger's auditory experience.

The application discloses a water-cooled controller for a pump and belongs to the field of water pump controllers. In view of the problems of poor heat dissipation and loud noise of an air-cooled controller, the water-cooled controller comprises a shell and an upper cover which are connected together, a circuit board is arranged between the shell and the upper cover, a partition wall is arranged in the shell, the circuit board is connected to the partition wall from top to bottom, a cooling pipe capable of communicating with a water source penetrates through the shell, the cooling pipe is connected to the partition wall from bottom to top through a connecting assembly, a heating element is arranged on the circuit board, the heating element is tightly attached to the partition wall, or the heating element corresponds to the upper and lower positions of the cooling pipe, so that the heat generated by the heating element is directly or indirectly transferred to the cooling pipe. The heat of the heating element on the circuit board is directly or indirectly transferred to the cooling pipe, the water flow in the cooling pipe can take away the heat transferred thereto, the heat dissipation effect is guaranteed, and no fan is used, so that the influence of wind noise is effectively avoided.

A combined convolutional neural network driven automobile flow field excitation prediction method comprises the following steps: 1) constructing a plurality of automobile deformation models with continuous geometric feature changes, and sampling multi-view images of all automobile deformation models to construct an image dataset; 2) simulating transient flow fields of all automobile deformation models, obtaining corresponding fluid dynamic pressure excitation and sound pressure excitation, and labeling corresponding multi-view images in the image dataset with excitation labels to construct a training set; 3) constructing a combined convolutional neural network model; 4) taking multi-view images as input and excitation labels as output, and training the combined convolutional neural network model by using the training set; and 5) obtaining multi-view images of a to-be-predicted automobile, inputting the multi-view images of the to-be-predicted automobile into the trained combined convolutional neural network model, and obtaining predicted fluid dynamic pressure excitation and sound pressure excitation. The application can significantly reduce the dependence of automobile flow field excitation calculation on supercomputing services and reduce wind noise development costs.

The present application relates to epidemic prevention communication technology field, especially to a duplex cluster communication interaction method and system and epidemic prevention helmet, which comprises: using the air guide pickup component arranged in the helmet body to obtain the voice signal of the wearer, and outputting the audio signal through the air guide sound production component arranged in the helmet body; performing echo cancellation and noise reduction processing on the obtained audio signal; using an adaptive filtering algorithm to suppress the acoustic feedback between the air guide pickup component and the air guide sound production component; based on a distributed channel access mechanism, allocating communication resources for multiple communication nodes to access in duplex; relying on a mesh self-organizing network topology without a central node to perform multi-hop forwarding and route maintenance of data packets, solving the problems of unclear communication, howling and signal attenuation in the strong noise, wind noise and shielding scene in the epidemic prevention helmet, effectively guaranteeing the clarity, stability and safety of cluster communication in harsh working environment.

The application provides an active noise reduction method and system for road noise and wind noise of an automobile, and the active noise reduction method comprises the following steps: S1, collecting a dynamic parameter signal and a total mixed noise signal during automobile driving; S2, constructing a dynamic calculation model of a Strouhal number according to a Reynolds number, deducing a real-time calculation model of a characteristic frequency of each noise source i according to the dynamic calculation model of the Strouhal number, and outputting a real-time characteristic frequency sequence corresponding to each noise source i; S3, constructing a global signal dictionary D, using an orthogonal matching pursuit sparse representation algorithm, and separating a single noise source signal in the total mixed noise signal by iteratively screening a dictionary atom with the highest matching degree with the characteristic frequency; S4, using a frequency tracking type fast adaptive filtering algorithm to generate a corresponding anti-phase cancellation signal; and S5, outputting the anti-phase cancellation signal in the automobile cabin, so that noise reduction can be performed on each noise source i.

The application discloses an automobile spoiler assembly and an automobile, and relates to the technical field of automobile aerodynamic outer decoration. The assembly comprises a lightweight composite outer decoration base body, a self-adaptive deformation wing plate, a flexible connecting support and a noise reduction component. The self-adaptive deformation wing plate is made of a memory alloy composite material and is internally provided with heating wires. The self-adaptive angle adjustment is realized by temperature control without the use of a motor and hydraulic drive. The low-speed flatness reduces wind resistance, and the high-speed bending increases the downforce. Meanwhile, the self-adaptive deformation wing plate can be heated to remove ice and snow. The flexible connecting support limits the deformation range, and the base body is embedded with a microporous sound-absorbing layer to absorb airflow noise. The application integrates the functions of self-adaptive deformation, active noise reduction and heating and ice removal. The structure is simplified, the failure rate is low, the lightweight strength is high, the application is suitable for full-condition driving and multi-model assembly, and the problems of poor working condition adaptation, large wind noise, complex structure and easy icing in winter of the traditional spoiler are effectively solved.

The utility model discloses a handheld type high -speed hair dryer's air outlet air duct structure of rear air intake, it includes: air duct body, heat -insulating sleeve ring is located the inside of air duct body and is located between the air inlet end of air duct body and the air outlet end of air duct body, electric heating body is fixed in the inside of heat -insulating sleeve ring, electric heating block seat is fixed in the air outlet end of air duct body and is located the inside of air duct body, the gradual change air duct is set up in the inside of electric heating block seat, and the air outlet end of heat -insulating sleeve ring is installed in the inside of the port of the air inlet end of gradual change air duct, and the inside diameter of the port of one end of gradual change air duct is adapted to the inside diameter of heat -insulating sleeve ring, and the air duct inside diameter of gradual change air duct gradually reduces from the air inlet end of gradual change air duct to the air outlet end of gradual change air duct. The utility model has the beneficial effects that: improve the wind speed of air outlet end, can prevent air leakage, ensure that the wind force is concentrated, reduce the wind noise of air outlet end, and the air nozzle is convenient to install, and the fixed effect is good.

The embodiment discloses a shooting device, which comprises a shell, a camera and a cover plate. The camera is carried on the shell, the shell is provided with a first sound transmission hole, and the cover plate is arranged on the shell and covers the first sound transmission hole along a first direction. A sound transmission channel along a second direction is formed between the cover plate and the shell. An included angle between the first direction and an optical axis direction of the camera is smaller than an included angle between the second direction and the optical axis direction. The shooting device reduces the wind noise.

This invention discloses an offline voice interaction system and method for motorcycles, belonging to the field of voice interaction technology. The invention aims to solve the technical problems of low recognition rate and lack of driving safety control in existing motorcycle voice systems under high-speed wind noise environments. Its technical solution includes: synchronously acquiring microphone array audio signals and CAN bus vehicle driving status data; dynamically loading a high-noise robust simplified instruction library or a full-function instruction library based on the real-time environmental signal-to-noise ratio to adapt to different riding scenarios; using a safety interlock decision module to match voice operation intentions with physical states such as vehicle speed and tilt angle in a permission mapping table, intercepting high-risk instructions or triggering secondary confirmation; and adaptively adjusting the gain and speech rate of the feedback voice based on the environmental signal-to-noise ratio. This invention can achieve highly reliable voice interaction across the entire speed range while ensuring riding safety.

The present invention relates to a vehicle-internal audio device (100; 100'; 100''), comprising: - at least one microphone, in particular analog or digital (10), for recording -- engine noise (220) caused by at least one engine (210) associated with the vehicle (200), in particular the drive engine, as well as -- from non-engine noise caused by at least one source other than the engine (210), in particular independent of the engine (210), especially driver and / or passenger voices, tire noise, wind noise and other ambient noise; - at least one ANC unit (40) designed for adaptive noise suppression, by means of which the engine noises (220) detected by the microphone (10) can be processed, in particular suppressed; at least one autoencoder unit (30) upstream of the ANC unit (40), by means of which the motor noises (220) can be distinguished and / or separated from the non-motor noises.

This application relates to the field of vehicle component technology, and discloses a glass assembly, a vehicle door, and a vehicle. The glass assembly includes a glass body with an inner surface facing the vehicle interior, the inner surface including a front side and a rear side opposite to each other along the length of the vehicle; a front lifting auxiliary member connected to the front side and used for sliding engagement with a first pillar trim panel; and a rear lifting auxiliary member connected to the rear side and used for sliding engagement with a second pillar trim panel. The outer surface of the glass body is coplanar with the outer surfaces of the first and second pillar trim panels. This glass assembly achieves flush alignment between the outer surface of the glass body and the outer surfaces of the first and second pillar trim panels, reducing wind noise, improving the vehicle's appearance quality, and also achieving low-friction lifting of the glass body, ensuring smooth lifting.

Disclosed is a vehicle door top sealing system, belonging to the technical field of automobile parts, and aiming to solve the problems of vehicle body damage, water leakage at connection points, wind noise and rust caused by using a penetrating fixing method for existing sealing strips. The vehicle door top sealing system comprises a glass guide channel, wherein a connecting portion of the glass guide channel is provided with a first connecting rail (7) having a U-shaped cross section, and inner lips (8) and inverted teeth (9) are provided on opposite inner walls of the first connecting rail, such that the glass guide channel can be firmly clamped on a vehicle body sheet metal part in a non-penetrating snap-fit manner; and a sealing portion of the vehicle door top sealing system extends from the connecting portion and is configured to elastically abut against the top of a piece of vehicle door glass (1) to form a main seal. In the vehicle door top sealing system, traditional riveting is replaced with a non-destructive snap-fit structure, fundamentally eliminating the risk of leakage and rust caused by drilling, and greatly simplifying an assembly process. The vehicle door top sealing system significantly improves the waterproof performance, noise reduction performance, durability and reliability of the vehicle by means of a multi-seal design incorporating an outer weatherstrip and an outer sealing lip.

The utility model discloses a lightweight automobile air conditioning air duct, including automobile air conditioning air duct, the wall thickness of automobile air conditioning air duct is between 0.2 0.4mm, the inner wall both sides wall of automobile air conditioning air duct all has the first reinforcing strip of welding, the common welding of relative two first reinforcing strip has reinforcing rod, the automobile air conditioning air duct includes long straight pipe department, and the last end of long straight pipe department has the first elbow pipe department integrally, the last end of first elbow pipe department has the bridging pipe department integrally, relate to a kind of lightweight automobile air conditioning air duct technical field, by the wall thickness of air conditioning air duct is set below 0.4mm, so that air conditioning air duct lightweight, and utilize the first reinforcing strip and reinforcing rod to realize the reinforcement to air duct, make up the problem of wall thickness thinner, guarantee the strength of air duct, by setting first sound-absorbing cotton, second sound-absorbing cotton, third sound-absorbing cotton and fourth sound-absorbing cotton in air conditioning air duct, effectively reduce the wind noise in air duct.

Provided is a microphone capable of being mounted on a moving body and capable of reducing wind noise during sound collection. A microphone (1) is mounted on a moving body and includes a microphone unit (102) that collects external sound, a housing (10) having an opening portion (10a) provided on a side surface in a direction of travel of the moving body, the opening portion (10a) communicating with a housing portion (101) that houses the microphone unit (102), and a windproof portion (11) provided on the side surface of the housing (10), the windproof portion (11) being installed in the direction of travel of the moving body as viewed from the opening portion (10a).

The utility model discloses a kind of wireless conference microphone systems without central control based on AI voice control, it includes pickup component, signal processing module, transmission module and linkage interface unit.Pickup component reduces wind noise interference by flow guide hole, guide slope and buffer cavity;Signal processing module analyzes voice instruction and encrypts transmission;Transmission module supports UHF and 5G Wi-Fi communication;Linkage interface unit realizes conference room equipment intelligent linkage.The system optimizes sound feedback effect by adjusting knob, and has adaptive calibration and state monitoring function, and operation reliability is improved by combining touch button and voice control.This application can simplify operation process, reduce maintenance cost, improve voice recognition accuracy and equipment stability.

This utility model discloses a volute structure, a centrifugal fan, and an air conditioner. The volute structure includes: a volute, with air inlets on two opposite end faces; and two recesses on the volute tongue, symmetrically distributed about the volute's axis of rotation (YOZ). A vertical plane (XOY) passing through the volute's central axis when the volute is placed vertically is used as the projection plane, perpendicular to the volute's axis of rotation (YOZ). The projection of the recesses onto the vertical plane (XOY) is a smooth, continuous curve (A0B0C0). This utility model, through a symmetrical concave, inclined design of the volute tongue, weakens the strong impact of the spiral airflow at the volute outlet on the tongue, improves the uniformity of the airflow distribution, effectively increases air volume, and reduces wind noise.

The application relates to the technical field of audio signal processing and speech recognition, and discloses a portable sound amplification and speech transcription system which comprises a wind noise sensing and separating module, a beam forming processing module, a dual-path processing module, a speech recognition module, a vocabulary correction module, a power consumption management module and an interactive management module.

Various embodiments of an ear-wearable electronic device are disclosed. The device includes a housing, a microphone disposed within an interior volume of the housing, and an acoustic path disposed at least partially within the interior volume of the housing. The acoustic path includes a conduit extending along a conduit axis between a first end and a second end, a first acoustic port disposed at the first end of the conduit and acoustically coupled to a first opening defined by the outer surface of the housing, a second acoustic port disposed at the second end of the conduit and acoustically coupled to a second opening defined by the outer surface of the housing, and an outlet connected to the middle section of the conduit and that acoustically couples the acoustic path to an inlet of the microphone. The acoustic path can define a broadband wind noise filter.

The utility model provides a kind of vehicle body structure and vehicle, vehicle body structure includes vehicle body roof, and the modelling piece and decorative piece being located at the top of vehicle body roof are arranged.And the modelling piece is located at the front end of vehicle body roof, and is located between the body side of left and right sides, and modelling piece is upwards arch relative to vehicle body roof.And decorative piece is located at the rear of modelling piece, and extend along the left and right direction of whole vehicle, and the front end of decorative piece and the top of modelling piece are connected, and the rear end of decorative piece gradually inclines to the top of vehicle body roof.The vehicle body structure of the utility model, by making decorative piece front end and modelling piece top be connected, rear end gradually inclines to the top of vehicle body roof, thus, the coherent streamline profile can be formed, so that the appearance of vehicle is more smooth, not only can make vehicle body have better aesthetic property, and air can more smoothly flow through roof, so that the vortex generation caused by roof front end modelling abruptness can be reduced, air resistance can be effectively reduced, and then wind noise is reduced.

The application discloses a low-wind-noise flow guide damping installation assembly for connecting an automobile rearview mirror and a vehicle body and belongs to the technical field of automobile rearview mirror assembly, which comprises an installation base, the installation base is a triangular base, two installation bolts are fixedly connected to the installation base, and the installation base is connected and installed with an automobile A column through the installation bolts; a connecting arm is used for supporting a rearview mirror shell or a mirror body, the cross section of the connecting arm is drop-shaped, and a vehicle side camera mounting seat is rotationally connected to the bottom position of the connecting arm. The automobile speed data is obtained through CAN bus connection, and the flow guide blade and the vehicle side camera are adjusted according to the vehicle speed, thereby realizing differential synchronous control, expanding the image taking angle of the vehicle side camera on the basis of reducing wind noise and flow guide damping, expanding the coverage range of the side rear lane, reducing the risk of lane changing blind area, and facilitating the early capture of long-distance traffic flow dynamics.

The application discloses a vehicle exterior styling wind noise prediction method and system, a storage medium and an electronic device, and the method comprises the following steps: acquiring historical exterior styling wind noise information of a historical vehicle; determining the contribution amount and the weight coefficient of a preset key part by using a deep learning algorithm according to the historical styling evaluation score and the historical wind noise speech intelligibility value; acquiring the basic exterior styling wind noise information of a basic vehicle of the same platform or the same type as a vehicle model to be developed and the measured styling evaluation score of the preset key part of the measured exterior styling; and calculating the measured wind noise speech intelligibility value of the measured exterior styling according to the contribution amount, the weight coefficient, the basic exterior styling wind noise information and the measured styling evaluation score. According to the application, the quantitative prediction of the wind noise level in the vehicle can be realized in the early stage of vehicle styling development.

Embodiments of the present application provide a sound cavity assembly and a sound collecting device. The sound cavity assembly comprises a shell and an acoustic module. A shell wall of the shell forms an incoming sound area. The incoming sound area forms a plurality of sound absorption holes. The incoming sound area comprises a middle area and an outer wrapping area. The outer wrapping area surrounds the outer periphery of the middle area. The aperture of the sound absorption holes on the outer wrapping area is smaller than the aperture of the sound absorption holes in the middle area. The acoustic module is arranged in the shell and corresponds to the incoming sound area. The sound cavity assembly provided by the embodiments of the present application can form a counter-rotating vortex reaction in the interior of the shell by setting the aperture of the sound absorption holes on the outer wrapping area to be smaller than the aperture of the sound absorption holes in the middle area, slow down the airflow, reduce the energy of the airflow, and further reduce the noise generated by the airflow on the acoustic module, thereby improving the wind noise resistance of the sound cavity assembly and improving the sound pickup quality.

This invention discloses a turbine housing device and a ventilator. The turbine housing device includes: a housing, a partition disposed within the housing, and a turbine fan disposed on the partition. The partition divides the housing into a communicating upper cavity and a lower cavity. A guide structure is disposed within the lower cavity, dividing the lower cavity into a first channel and a second channel. The upper cavity connects the first channel and the second channel. The first channel is located on one side of the second channel, and the second channel surrounds the axis of the turbine fan's air inlet. The housing has a first opening end communicating with the first channel and a second opening end communicating with the turbine fan's air outlet. The turbine fan's air inlet communicates with the second channel to drive gas flow between the first opening end and the second opening end. In this application, by connecting the first channel and the second channel in the lower cavity through the upper cavity, a longer gas channel is achieved within a smaller volume, reducing the wind noise generated when the turbine fan is operating.

The application discloses a kind of microphone assembly and extractor hood for active noise reduction, and microphone assembly for active noise reduction includes: microphone and flow guide cover, flow guide cover is oppositely arranged with the pickup surface of microphone;There is a gap for pickup between flow guide cover and pickup surface, and the gap is communicated with the pickup hole of microphone.The application is by additionally adding flow guide cover, so that and there is a gap for pickup between flow guide cover and the pickup surface of microphone, sound can directly enter the pickup hole of microphone through the gap, since narrow gap will form acoustic resistance, most airflow flows away from the surface of flow guide cover, a small part of airflow will enter the gap, but flow speed will be reduced, and flow is smooth, without changing flow direction directly from the gap, so airflow will not enter pickup hole, airflow can directly flow out through the gap, avoid producing wind noise, drainage without introducing wind noise, without affecting microphone to collect sound signal, to improve the noise reduction effect of active noise reduction.

This application discloses a down-blowing bathroom heater window, including a window frame and glass. The window frame includes a lower part, with a down-blowing air inlet on the outer side of the lower part. A heating element and a warm air fan are housed inside the lower part, and the warm air fan is connected to the down-blowing air outlet on the inner side. The beneficial effects of this application are: the down-blowing air outlet is close to the ground, forming a bottom-up heating method. The overall thermal effect of the space is more even under the operation of the warm air fan, solving the common problem of ceiling-mounted bathroom heaters not easily warming lower spaces, optimizing the heating path, and ensuring heating effect; the embedded installation of the device is achieved based on the window opening and window frame, making full use of the internal space of the window frame without occupying additional space, ensuring the utilization rate of indoor space, ensuring the comfort of using the device, and also significantly reducing wind noise caused by the high-power fan due to the window opening.

This utility model discloses a vibration-damping and noise-reducing silent heat sink, including a heat sink assembly, a fan, and a base plate. It also includes a vibration-damping connector and a flow guide shroud. The vibration-damping connector is made of an elastic material and has a ring-shaped structure, nested between the fan and the flow guide shroud. The flow guide shroud surrounds the air outlet side of the fan, and its inner wall has a spiral flow guide groove. The heat sink assembly includes multiple wavy, non-equidistantly arranged heat dissipation fins, forming a gradually expanding airflow channel. The bottom of the base plate has a honeycomb-shaped vibration-damping cavity filled with damping adhesive. The three-stage vibration-damping structure significantly reduces vibration transmission rate, reduces resonance, and extends equipment life. The spiral flow guide groove, sound-absorbing grille, and wavy fin phase difference design significantly reduce wind noise and structural noise.

The application provides a low, slow and small target fast detection method and system with adaptive wind noise, and belongs to the technical field of target detection. The method first collects unmanned aerial vehicle acoustic data and calls bird acoustic data set, constructs high signal-to-noise ratio data set, training set, test set and verification set; the acoustic signals of the high signal-to-noise ratio data set are subjected to synchronous compression wavelet transform, the high and low frequency information is separated, the waveform features and the spectrogram features are extracted respectively, the feature fusion is carried out, the feature fusion weight is optimized in the fusion process, and the adaptive wind noise fusion features are obtained; the YOLO network is called and its structure is optimized based on the fusion features, and the feature extraction and target detection network model is constructed; after training, testing and verification by the training set, the test set and the verification set, the model is deployed to the mobile terminal or the ground station for low, slow and small target detection. Through the dual-mode feature fusion and network optimization, the detection accuracy and timeliness of the low, slow and small target under dynamic wind noise are improved.

This utility model relates to a sound pickup channel, specifically disclosing a microphone sound pickup channel for a Bluetooth headset. It includes a housing with a cavity formed within it. The sound pickup channel is located on the housing, with one end connected to the outside and the other end connected to the cavity. A microphone is located at the other end of the sound pickup channel. The cross-section of the sound pickup channel is bent. The bent sound pickup channel of this utility model can reduce wind noise interference; it can reduce ambient noise reflection; it can enhance active noise cancellation; and it can improve the durability of the microphone.

The utility model discloses a kind of bone conduction earphones, it is related to earphone technical field, the earphone head of bone conduction earphones includes shell, main microphone, auxiliary microphone and noise reduction net component, shell is equipped with the first sound transmission channel and second sound transmission channel with its inside and outside intercommunication;Main microphone is located in the shell, and located at the inner end portion of first sound transmission channel;Auxiliary microphone is located in the shell, and located at the inner end portion of second sound transmission channel, the outer end portion of first sound transmission channel is equipped with noise reduction net component, the outer end portion of second sound transmission channel is not equipped with the noise reduction net component, so that the noise signal picked up by main microphone reduces, the size of the noise signal picked up by main microphone and auxiliary microphone is more close, can be more reliably eliminate wind noise, to improve the effect of call noise reduction.