44 results about "Directional sound" patented technology

The utility model discloses a sound wave soot blower for electrostatic precipitator, it includes the casing, one end fixed mounting of casing has compressed gas source, one side of compressed gas source is provided with main gas pipe, be provided with a plurality of different length's branch gas pipe on main gas pipe, one end of a plurality of branch gas pipe all is fixedly installed with intelligent control valve all to the shell and is all downward, the lower end fixed mounting of intelligent control valve has variable frequency formula resonant cavity sound wave generator, the lower end fixed connection of variable frequency formula resonant cavity sound wave generator has directional sound wave sound signal horn, directional sound wave sound signal horn is located the top of dust collecting electrode, through the branch gas pipe of different length to directional sound wave sound signal horn and variable frequency formula resonant cavity sound wave generator form asymmetric interval distribution, effectively reduced the sound wave interference between each electric field.

Embodiments of this disclosure provide a control method, apparatus, device, computer program product, and computer-readable storage medium. The method determines contextual information, including location information, of at least one user based on sound data within a space, and controls an audio-visual system to emit directional sound and light signals towards the location of at least one user based on this contextual information. This provides targeted and personalized audio-visual signals to users sharing the same space, ensuring that different users do not interfere with each other and greatly improving the user experience. Furthermore, by determining contextual information including location information based on sound information, user privacy can be significantly protected from disclosure.

The utility model provides a kind of directional sound used in exhibition hall, it is related to directional sound technical field, including directional sound main part, four corners in the inside of directional sound main part are respectively equipped with spiral aluminium pipe, double-layer frame is provided in the inside of directional sound main part, the part of backplate of directional sound main part is set in top end position and is provided with radiating fin;Airflow path is extended using oblique spiral aluminium pipe, heat air is discharged in combination with taper structure to accelerate, heat dissipation efficiency is significantly improved, power amplifier chip temperature is reduced by more than 30%, avoid the deterioration of sound quality or equipment damage due to overheating, heat pipe is directly attached power amplifier chip, branch heat pipe quickly conducts heat to fin and spiral aluminium pipe, realize multi-path collaborative heat dissipation, ensure that still can work stably under high temperature environment, adjust fin angle by micro steering gear simultaneously, optimize airflow direction, further improve heat dissipation performance, avoid noise interference simultaneously.

The disclosure relates to the technical field of sound-electricity conversion, and discloses a speaker assembly, a seat, and an electronic device, which can realize directional sound emission of audio and has a simple structure. The speaker assembly includes a mounting body, a plurality of dipole speaker units, and a control unit. The plurality of dipole speaker units are disposed inside the mounting body and are configured to form a dipole sound source to achieve directional sound emission. The control unit is electrically connected with each dipole speaker unit of the plurality of dipole speaker units and configured to control at least one control parameter for the dipole speaker unit of the plurality of dipole speaker units to adjust a sound field of the dipole speaker unit in a preset region.

The invention discloses an immersive exhibition hall sound field control system, and relates to the field of sound field control. The system comprises an acoustic sensing module which is used for collecting all-domain audio signals of an exhibition hall in real time; the global analysis module is in signal connection with the acoustic sensing module and is used for processing the collected audio signals; the sound field execution module is used for receiving the sound field control strategy generated by the global analysis module; and the central control platform is used for coordinating the work of each module, managing the audio content and providing a man-machine interaction interface. According to the system, crossing from indifference broadcast to partition directional sound field is realized, immersive personalized auditory experience is created, and the system has the capabilities of dynamically sensing and optimizing acoustic environment: the system can position a noise source in real time and evaluate reverberation, so that the problems of mutual crosstalk and loud noise of different explanation contents in a traditional system are avoided, and the system is suitable for popularization and application. And a plurality of exhibition areas are allowed to synchronously carry out clear and non-interfering explanation.

This utility model discloses a lower wire of a directional sound-emitting screen and the directional sound-emitting screen itself. The lower wire is fitted to the upper wire of the directional sound-emitting screen. The lower wire is divided into an inner functional area and a non-functional area located outside the functional area. The lower wire includes a substrate layer and an insulating layer. The insulating layer is disposed on the substrate layer, and the periphery of the insulating layer in the non-functional area has grooves for accommodating protrusions formed on the upper wire of the directional sound-emitting screen. This utility model can avoid the phenomenon of bulges on the finished product after the upper and lower wires are fitted together, which would lead to defects in the finished product, thereby significantly improving the yield rate of the finished product.

This invention belongs to the field of sound-generating device technology, specifically a directional sound-generating device and its manufacturing process. It includes a folding mechanism, a height adjustment mechanism located below the folding mechanism, a rotating mechanism located at the top of the folding mechanism, an angle adjustment mechanism located at the top of the rotating mechanism, and a mounting mechanism located above the angle adjustment mechanism. A directional sound-generating body is fixed above the angle adjustment mechanism via the mounting mechanism. The rotating mechanism includes a fixed base, with a second motor fixedly connected to the left side of the top of the fixed base. A first gear is fixedly connected to the output end of the second motor, and a second gear is meshed with the right side of the first gear. This invention achieves lateral adjustment of the sound-generating device by controlling the rotation of the first gear with the second motor, which in turn drives the second gear to rotate the rotating frame. Vertical adjustment of the sound-generating device is achieved by controlling the up-and-down movement of the mounting frame with a telescopic rod. This solves the problem of traditional sound-generating devices requiring manual adjustment to change the direction of the sound source output, which is labor-intensive.

This utility model discloses an acoustic testing system for a directional sound-emitting device, including an audio analyzer, an audio processing unit, a power amplifier, a transformer unit, a DC power supply, and a pickup unit. The audio analyzer provides audio, which is then processed as a digital audio signal by the audio processing unit. The processed audio is amplified by the power amplifier, and after exiting the power amplifier, it is amplified again by the transformer. With the DC bias provided by the DC power supply, it is then connected to the directional sound-emitting device under test. The sound emitted by the directional sound-emitting device is received by the pickup unit and returned to the audio analyzer, which displays the frequency response and distortion curves. This utility model provides a novel acoustic testing platform that enables rapid testing of the acoustic performance of directional sound-emitting devices.

This invention provides a method and system for directional sound generation from a loudspeaker based on offline simulation and feedforward control, relating to the field of electroacoustic technology. The method includes: based on the feedforward compensation database, in the online implementation phase, performing frequency decomposition on the input audio signal using a digital signal processor and querying the database to obtain compensation parameters corresponding to each frequency component, thereby obtaining a real-time inverse compensation signal; using the real-time inverse compensation signal, synchronously driving the main loudspeaker and auxiliary loudspeaker, causing the compensated sound wave radiated by the auxiliary loudspeaker to destructively interfere with the sound wave behind the main loudspeaker, forming an acoustic quiet zone. This invention combines offline simulation to construct a precise database with online feedforward query for real-time compensation, ensuring accuracy and efficiency throughout the entire process from data foundation to acoustic quiet zone formation.

One or more embodiments of this specification relate to an acoustic output device, the acoustic output device comprising: a housing; a first speaker installed within the housing and acoustically coupled to two holes installed in the housing to output a first sound wave and a second sound wave having a phase difference, respectively; a second speaker installed within the housing and acoustically coupled to one hole installed in the housing to output a third sound wave; and a processing circuit configured to provide a first electrical signal to the first speaker and a second electrical signal to the second speaker, wherein the first electrical signal and the second electrical signal have an amplitude and / or phase difference within a target frequency range such that the far-field radiated sound of the acoustic output device exhibits at least one directional sound pressure distribution.

A directional sound system includes a base member and at least one pane element secured to the base member. The base member includes a base surface. An exciter is secured to the at least one pane element and includes an exciter surface. An adhesive isolation ring is applied between the at least one pane element and the base member. A predetermined thickness of the adhesive isolation ring creates a gap between the base surface of the base member and the exciter surface. The at least one pane element is positioned on the base surface of the base member. The exciter generates a directional signal when energized.

The application discloses a preparation process of a directional sound-emitting folding display screen, which comprises the following steps: providing a folding screen, and integrally processing a vibrating substrate layer by adopting a 3D printing process; the lower end face of the folding screen far from a client is attached to the vibrating substrate layer to form a vibrating layer; an insulating layer is formed on the upper end face of the non-vibrating substrate layer close to the client, and a micro-pattern layer is formed on the upper end face of the insulating layer close to the client to form a non-vibrating layer; the micro-pattern layer is integrally processed by adopting a 3D printing process, a slit coating process or an exposure and development process; finally, the frame of the vibrating layer is attached to the frame of the non-vibrating layer; the vibrating layer vibrates and emits sound in the direction close to or far from the non-vibrating layer under the action of an ultrasonic signal loaded from outside. The application has the advantages of high reliability, lower cost, wider application range, higher precision and flexibility and the like.

This application relates to a directional open-type AR glasses, including a frame and two temples symmetrically arranged on both sides of the frame. The upper end of the temple's tail has a groove. The glasses also include a housing, an audio module, and an adjustment component. The housing is combined with one side of the temple's tail. The housing has several sound outlets facing the auricle and towards the ear canal. The audio module is disposed within the housing and emits sound wave signals, transmitting these signals to the sound outlets so that the sound waves can propagate from the outlets towards the ear canal. The adjustment component is used to adjustably connect the housing to the temple's tail to adjust and position the sound outlet direction relative to the ear canal. This application enables directional sound emission, accurately transmitting sound to the ear canal, and allows for flexible adjustment of the angle and position of the sound-emitting components, making it convenient for users.

This invention discloses a mini-computer with integrated voice noise reduction, comprising a mini-computer body, on which are: a microphone array including at least two sets of microphone units; a voice noise reduction module connected to the microphone array and an analog-to-digital converter module; a central processing unit connected to the voice noise reduction module; a power amplifier module connected to the central processing unit; and an analog-to-digital converter module connected to the power amplifier module, used to sample the amplified audio signal from the power amplifier module and convert it into an echo digital reference signal. When the mini-computer with integrated voice noise reduction described in this invention is working, on the one hand, the microphone array achieves multi-directional sound pickup, and the voice noise reduction module simultaneously performs noise reduction processing, effectively suppressing various types of noise interference; on the other hand, the voice noise reduction module eliminates external speaker echo in the mixed audio signal based on the echo digital reference signal, further accurately suppressing external speaker echo interference and ensuring clear and pure voice quality.

A directional sound-producing screen, a display device, and a preparation process for a directional sound-producing screen. The preparation process for the directional sound-producing screen comprises: preparing a vibration layer (1), comprising etching a plurality of first recesses (17) on a first UTG substrate layer (11) by means of a TGV process; preparing a non-vibration layer (2), comprising integrally forming a microstructure (22) on a second UTG substrate layer (21) by means of the TGV process; and bonding frames of the vibration layer (1) and the non-vibration layer (2), wherein after bonding, the microstructure (22) is correspondingly embedded into the first recesses (17). Processing the microstructure (22) by means of TGV drilling technology and integrating same with a nested structure of the first recesses (17) reduces the difficulty of processing the microstructure (22) and facilitates control of the precision of processing same.

1. The name of the design product: directional sound device (3). 2. The use of the design product: for playing sound directionally. 3. The design points of the design product: in the combination of shape and pattern. 4. The picture or photo that best shows the design points: front view.

The present application relates to the technical field of robot control, in particular to a robot noise reduction directional sound pickup method and system, equipment and medium, the present application mainly includes real-time acquisition of the motion parameters of the current robot, based on the current motion parameters, the calibration ground contact time and the calibration ground contact point to obtain the predicted ground contact time, comprehensive evaluation of the credibility of each foot end ground contact prediction based on real-time prediction of the ground contact time and confidence interval to determine the noise expected time window, based on the noise expected time window, send the control signal to the microphone to suppress the ground contact point direction sound source interference. Through the above method, the landing time is predicted by using the multi-modal sensing information of the robot body, and the suppression measures are actively taken within a short time before the impact occurs, the microphone gain, directional sound pickup and adaptive beam control are dynamically adjusted, so that the landing noise interference is effectively reduced while the integrity of the voice interaction is ensured.

This invention relates to the field of audio signal processing technology, specifically to a directional sound pickup and adaptive noise reduction system and method using a multi-microphone array. The invention acquires signals through a multi-microphone array and performs time-frequency conversion. A beamforming unit forms a directional beam according to the target direction and constructs spatial nulls in the interference direction. A noise reduction unit adaptively suppresses noise in the beam output, simultaneously extracting residual noise energy and speech distortion feature values. A closed-loop feedback control unit executes a zero-point adaptive optimization algorithm based on the joint constraints of residual noise energy and speech distortion. Using the aforementioned feature values, a cost factor is calculated and a beam zero-point direction update is generated, which is fed back to the beamforming unit to achieve closed-loop adaptive adjustment of the null direction. This breaks the limitation that traditional beamforming and post-noise reduction are independent, and can simultaneously improve noise suppression capability and speech fidelity in complex acoustic environments.

The utility model discloses a multifunctional recording pen, including recording pen shell, the outside of recording pen shell is equipped with the protective sleeve, and the bottom of recording pen shell is fixed with back clamp, and the bottom of recording pen shell is rotatably connected with two first support bars, and the two first support bars are located left and right sides of back clamp respectively, and the inside middle part of two first support bars is rotatably connected with second support bar, and the end part between two second support bars is fixedly connected with connecting rod, and the bottom of recording pen shell is fixed with first clamping block and second clamping block, and first clamping block and second clamping block are located back clamp front and back respectively, and the clamping plate bottom of back clamp is fixed with third clamping block, the multifunctional recording pen, through setting rotatable first support bar, second support bar and connecting rod in the bottom of recording pen shell, cooperate with the clamping groove of different position on third clamping block, can flexibly adjust the inclination of recording pen, makes microphone accurate orientation sound source, satisfies the directional sound reception demand of meeting, classroom and other scenes.

This invention discloses a directional sound-emitting foldable display screen, comprising a vibrating layer and a non-vibrating layer. The vibrating layer includes a foldable screen and a vibrating substrate layer, which is integrally formed using 3D printing and disposed on the lower end surface of the foldable screen away from the user. The non-vibrating layer includes a non-vibrating substrate layer, an insulating layer, and a micro-patterned layer. The insulating layer is disposed on the upper end surface of the non-vibrating substrate layer near the vibrating layer. The micro-patterned layer consists of multiple insulating bumps formed on the upper end surface of the insulating layer near the vibrating layer, and is integrally formed by using 3D printing, slot coating, or exposure and development processes to form a resin layer internally doped with alumina nanoparticles. This invention achieves full foldability of the directional sound-emitting foldable display screen while improving the overall operational reliability of the product, and has advantages such as significantly shortened development cycle, lower cost, wider applicability, and higher precision and flexibility.

The application discloses a directional sound pickup method and device, electronic equipment and a computer readable medium, and belongs to the technical field of audio acquisition. The method comprises the following steps: acquiring target audio collected by a plurality of audio collection devices; inputting the target audio into a target model which is trained based on a neural network to be trained in advance to determine a predicted single-channel audio in a target direction, wherein the target model is trained in the following manner: in a forward propagation process, a first audio of a single channel is determined based on a first real spectrum, a first imaginary spectrum, a covariance matrix of the first real spectrum and a covariance matrix of the first imaginary spectrum, and a loss function value is determined based on the first audio and the single-channel audio. By calculating the covariance matrix to learn the key components and non-key components between different channels, the sound pickup gap of different channels at different angles is obtained, the sound in the target direction is enhanced, and the sound in the non-target direction is suppressed, so that the directional sound pickup accuracy of the target model is improved.

This application discloses an image sharpening processing device and method for dusty environments, belonging to the fields of industrial video surveillance and image recognition processing. The device includes an image acquisition module, a sound field generator, a sharpness analysis module electrically connected to the image acquisition module, a controller electrically connected to the sharpness analysis module and the sound field generator, and a power supply module. This device can generate a dynamically optimized frequency-tuned sound field, causing suspended dust particles in the environment to collide and agglomerate, increasing particle size, reducing the number of particles, and partially settling, thus physically enhancing environmental visibility. It can emit a highly directional sound field towards target equipment, improving the clarity of the video image input from the image acquisition source. It has the function of combining general improvement of clarity in the monitored area and enhancement of clarity in key areas. Furthermore, it combines algorithms to achieve a dual collaborative image recognition and data processing process of physical enhancement and algorithm optimization, improving video clarity and thus improving industrial control accuracy and operational safety.

This invention provides a directional sound testing device, method, and speaker for loudspeakers, belonging to the field of loudspeaker technology. The device includes: a device setting module for fixing the loudspeaker under test at the center of a rotating platform, and simultaneously mounting a microphone on a programmable rotating bracket so that the microphone center is aligned with the center of the loudspeaker under test; a test parameter setting module for setting test parameters; and a test module for performing angle scanning measurements based on the test parameters to obtain test results. This invention provides a directional sound testing device, method, and speaker for loudspeakers, fixing the loudspeaker under test at the center of a rotating platform, mounting a microphone on a programmable rotating bracket, setting test parameters to accurately simulate different usage scenarios, obtaining test results, and accurately measuring the directional sound performance parameters of the loudspeaker, thus improving the comprehensiveness and suitability of loudspeaker directional sound performance testing.

This invention relates to the field of directional sound pickup technology, and discloses a directional sound pickup method, apparatus, computer equipment, and medium. The method includes: acquiring time-domain speech signals collected by at least two microphones and performing time-frequency transformation; calculating the observed phase difference at each frequency point, and determining the target theoretical phase difference based on the user-specified target pickup direction and microphone geometric parameters; encoding the target theoretical phase difference into a query vector, encoding the observed phase difference into a key vector, and generating a spatial confidence mask through a geometric cross-attention mechanism; filtering the frequency domain signal using the mask, and outputting enhanced speech in the target direction after inverse time-frequency transformation. This invention effectively solves the phase winding problem through a physically prior-guided attention mechanism, achieving highly robust and high-fidelity speech pickup in any direction under strong reverberation and low signal-to-noise ratio environments.

The application discloses an open wireless earphone voice recognition and directional sound transmission performance evaluation method and system, relates to the technical field of earphone equipment, and comprises the following steps: voice recognition test preparation is carried out through a convolutional neural network noise suppression and an adaptive audio feedback mechanism, and a dynamic voice signal library is constructed to collect earphone voice signals; a word error rate is calculated based on the collected earphone voice signals, voice recognition evaluation is carried out in combination with short-time objective voice intelligibility and syllable rate estimation, and sound field directional sound transmission testing is carried out in combination with a directional gain formula. The application accurately evaluates the similarity between enhanced voice and real voice through multi-band filtering, syllable rate analysis and short-time objective voice intelligibility scoring, quantifies the voice recognition effect in combination with the word error rate, establishes the relationship between the signal-to-noise ratio and the voice recognition performance, and provides a comprehensive and dynamic performance evaluation system.

This invention discloses a directional sound fusion analysis system and method based on voiceprint splicing, belonging to the field of directional sound fusion technology. Based on visitor status data within the target area, this invention distinguishes the current scene's browsing mode, determines the interference risk status, acquires the exhibition hall's spatial data and material information, calculates the reflected sound and its loudness distribution at different positions and angles reaching the target point according to the relative orientation of the visitor's position coordinates and the ultrasonic transducer array, obtains the reflection interference factor, outputs the optimal sound state parameters, calculates the beam pointing angle based on the visitor's real-time coordinates, and adjusts the main lobe width of the ultrasonic array under the constraint of the optimal sound state parameters for directional projection. This invention ensures that the optimal sound state of the broadcasting unit can be clearly projected to the target area, while minimizing crosstalk to adjacent areas, providing visitors with a high-quality guided tour service in the optimal listening area with appropriate volume and no interference.

The utility model provides a kind of tunnel risk field management and control equipment, it is related to tunnel risk control technical field, including directional sound wave loudspeaker device, vertical plate, support frame, slide bar, connecting rod and clamping assembly.The tunnel risk field management and control equipment, first beam for fixing device is fixed in tunnel side wall suitable position, the position of upper clamping plate and lower clamping plate is adjusted by long screw rod, so that it is clamped and fixed on the beam fixed on tunnel side wall, realize the stable installation of device.Rotating directional sound wave loudspeaker device rotates, while fixed screw rod two on connecting rod slides in horizontal groove, after device is adjusted to suitable inclination angle, tighten fixed screw rod one and fixed screw rod two, so that the both ends of connecting rod are fixed in swivel seat interior and between two groups of slide bar, play the role of auxiliary support and limit rotation angle.It can timely and accurately pass risk warning information to personnel in tunnel, effectively improve the efficiency and effect of tunnel risk control.

This utility model discloses an integrated directional sound-emitting device, including a directional sound-emitting screen and a drive box electrically connected to the directional sound-emitting screen. Each side of the directional sound-emitting screen is detachably connected to both sides of the drive box via a connecting rod. This utility model achieves integrated use of the directional sound-emitting screen, making installation convenient, operation easy, and the overall appearance simple and beautiful. It also improves its flexibility of use, thus greatly expanding its application scenarios and scope.

This invention belongs to the field of intelligent toy control technology. It discloses an interactive track toy sensing sound effect interaction system and method, comprising: capturing the magnetic field distortion signal of the permanent magnet marker at the bottom of the moving carrier through a magnetic induction array within the track; performing multi-node time-series comparison of the distortion signal, and determining the real-time track position and speed parameters based on the peak arrival time difference and amplitude attenuation characteristics; matching the position coordinates with the boundary of the scene trigger section to generate a sound effect trigger command; retrieving sound effect segments according to the scene type, dynamically adapting the playback rate and pitch based on the speed parameters to generate speed-related sound effect data; and implementing segmented progressive sound field projection according to the progressive position sequence of the moving carrier, driving the directional sound-generating components to output sequentially; greatly improving the quality of interactive track toy products.