164 results about "Sound emission" patented technology

The invention discloses a silo internal state monitoring method and an adjustable experiment device, and relates to the technical field of vertical silos, the silo internal state monitoring device comprises a silo body and a silo bottom, the silo body and the silo bottom are connected through a flange plate, a tray is arranged in the silo body, a weight is arranged above the tray, and the lower portion of the tray is in contact with bulk materials placed in the silo body. And circular grooves are formed in the wall surfaces of the bin body and the bin bottom. The detection method comprises the steps that S1, the bottom opening of the conical bin bottom is closed, materials enter the bin body through the upper opening of the bin body to be stacked, and the tray is placed on the top faces of the materials; s2, after the materials are stacked, an acoustic emission acquisition device and a pressure acquisition device are turned on to prepare to start to acquire signals; s3, a bottom opening of the conical bin bottom is opened, and sound signals and pressure signals are collected till discharging is completed; and S4, after discharging is completed, collection of the sound signals and the pressure signals is stopped. According to the invention, the fluctuation difference between the sound signal and the pressure signal is collected, and the signal characteristics are analyzed to characterize the material flow state in the adjustable silo.

The invention discloses a goaf remaining coal pillar stability comprehensive evaluation method based on InSAR and acoustics fusion, and belongs to the field of mine safety evaluation.The goaf remaining coal pillar stability comprehensive evaluation method comprises the steps that an SAR satellite suitable for a mining area is selected, SAR satellite image data of the mining area is obtained, sequential deformation analysis is conducted, the deformation rate and an accumulated deformation graph of the mining area are obtained, and a settlement abnormal area of the mining area is recognized; a coal pillar area of a mining area is drilled, and an ultrasonic logging device, an inter-well sound wave chromatography system and a sound emission monitor are arranged; performing comprehensive analysis on all the obtained data, and constructing a coal pillar stability evaluation model; and through the coal pillar stability evaluation model, grading the coal pillar stability, and predicting a coal pillar instability risk. According to the InSAR and acoustics fused goaf remaining coal pillar stability comprehensive evaluation method provided by the invention, high-precision evaluation of the coal pillar stability is realized through combination of earth surface deformation monitoring and deep coal pillar structure detection.

The present disclosure provides a hearing aid system. The hearing aid system comprises a hearing aid main body and an earplug piece, the hearing aid main body is provided with a first playback channel, and the hearing aid main body is used for extending into an ear canal; the earplug piece comprises a supporting connecting layer, a temperature-sensitive deformation layer and an extension heat conduction coating layer, the supporting connecting layer is connected with the temperature-sensitive deformation layer, the extension heat conduction coating layer is connected to the peripheral wall of the side, away from the supporting connecting layer, of the temperature-sensitive deformation layer in a coating mode, and the supporting connecting layer is connected with the hearing aid body; a first playback via hole is formed in the supporting connecting layer, a second playback via hole is formed in the temperature-sensitive deformation layer, and the second playback via hole is used for being communicated with an ear canal; the temperature-sensitive deformation layer is used for being heated to deform and expand in the ear canal, and the extension heat-conducting coating layer is used for extending to deform to fit the ear canal when the temperature-sensitive deformation layer is heated to deform and expand, so that the extension heat-conducting coating layer is clamped and propped against the inner wall of the ear canal. The hearing aid system is good in use comfort in the long-term wearing and using process.

The invention discloses a children autism risk assessment method and system based on multi-modal collaborative reasoning and a vertical domain large model, and the method comprises the steps: collecting the audio data of a to-be-assessed child and a parent in a parent-child interaction link, and collecting the video data through collection equipment; analyzing and marking the collected audio data, and generating a sounding record and a transcription text with a timestamp; performing real-time analysis and labeling on the collected video data, and generating sight line, expression and action recognition records with timestamps; performing independent analysis on the preprocessed multi-modal data, performing feature fusion and collaborative analysis on the multi-modal data such as audio, text and video by using a multi-modal collaborative reasoning method, and generating a scientific data index for autism risk assessment; training a vertical domain large model special for autism risk assessment; and inputting the generated data indexes into a vertical domain large model, and outputting targeted assessment suggestions by the large model in combination with daily information of the children to be assessed obtained by interviews and conversations with parents.

A cancellation device according to one aspect of the invention is a cancellation device that cancels noise coming to a region in a vicinity of a loudspeaker, the cancellation device including at least two loudspeakers 1 and one reference microphone 3, in which the cancellation device is configured such that an acoustic signal emitted in a sound emission direction of a same loudspeaker and an acoustic signal emitted in an opposite direction collide with each other, the at least two loudspeakers 1 and the reference microphone 3 are arranged on a same plane, the at least two loudspeakers 1 emit cancellation sound that cancels the noise in synchrony, and the plane is a plane including a boundary between a sound emission direction of the two loudspeakers 1 and a direction opposite to a sound emission direction.

This application provides a display device and its audio output method. The display device includes a display screen, a first speaker, and a second speaker. The first speaker is located behind the display screen, and its sound emission direction is towards the upper rear of the display device. The second speaker's sound emission direction is towards the front of the display device or towards the lower part of the display device. The first speaker and the second speaker emit sound asynchronously. The display device of this application has good stereo sound effects.

The utility model discloses a rotating shaft structure capable of sounding prompt, which comprises an outer ring and an inner ring which can rotate relatively, a central hole is arranged in the inner ring, a rotary sounding clamping plate and an elastic element are arranged between the outer ring and the inner ring, a cavity for accommodating the rotary sounding clamping plate and the elastic element is arranged in the outer ring, and a circle of uniformly arranged tooth grooves are arranged on the inner wall of the outer ring. The inner ring is provided with a limiting clamping table sleeved with the rotary sound production clamping plate, the rotary sound production clamping plate is provided with meshing teeth, and when the outer ring and the inner ring rotate relatively, the meshing teeth are continuously and movably meshed with the tooth grooves to make a sound. According to the utility model, when the outer ring and the inner ring rotate relatively, a clear click sound can be made, a good rotation operation hand feeling can be maintained, and after rotation, a relative rotation angle can be maintained and shaking is not easy to occur; the rotary sounding clamping plate and the elastic element are simple in structure, high in part structural strength and convenient to process and assemble; after assembly, the meshing teeth are in movable contact with the tooth grooves in the circumferential direction during rotary adjustment, fatigue abrasion is not prone to occurring in the use process, and long-term use is facilitated.

The application discloses a sound box of a rotating shaft rotating type adjustable medium-high sound unit, and relates to the technical field of sound boxes.The sound box comprises a sound box body, strip-shaped sound boxes are installed on the two sides of the sound box body, a rotating shaft structure is connected to one end of the strip-shaped sound boxes, and the rotating shaft structure is connected with the upper end side wall of the sound box body.The rotating shaft structure can drive the strip-shaped sound boxes to flexibly adjust the sound emission position on the two sides of the sound box body, and a pull rod is inserted into the sound box body.The sound box is adjusted by the cooperation of the sound box body, the strip-shaped sound boxes and the rotating shaft structure, the medium-high sound emission direction is adjusted by using the physical structure, the point source sound emission is changed into bilateral distributed sound emission, the horizontal sound field coverage is greatly widened, the sound emission angle can be flexibly adjusted according to the position of the audience and the size of the scene, the clear sound quality and the stable sound field positioning can be kept in the whole area.

(Main claim): Electronic bicycle bell for arrangement inside a bicycle handlebar (1) with an electronic assembly (4) with control unit (5) and power supply (6), an actuator / sensor (8) that can be operated laterally on the handlebar, and at least one sound outlet (9) in the area of ​​a handlebar end plug (10), wherein an acoustic signal can be generated by actuating the actuator / sensor (8), which is emitted via the handlebar end area.

System (10) for determining a trigger amplitude indicating a precursor to material failure in a test specimen (12), the system (10) comprising: a microphone (20) that converts the sound emission emitted by the test specimen (12) into electrical signals (40), wherein a load (38) is applied to the test specimen (12) and the sound emission is emitted when the load (38) causes deformation of the test specimen (12) prior to material failure; a control module (22) in electrical connection with the microphone (20), the control module (22) being configured to execute instructions for: monitoring the electrical signals (40) generated by the microphone (20); filtering the electrical signals (40) generated by the microphone (20) to allow frequencies within a range of interest and to attenuate frequencies outside the range of interest;Converting the electrical signals (40) generated by the microphone (20) into individual frequency components (66) based on a fast Fourier transform (FFT) (62), wherein each of the individual frequency components (66) contains a peak intensity that represents audible sound; and determining the trigger amplitude based on the peak intensity of the individual frequency components (66) of the FFT (62); wherein the individual frequency components (66) of the FFT (62) define an amplitude track (82); wherein the control module (22) is executed to determine the trigger amplitude by: analyzing the amplitude track (82) using a kernel density estimator (KDE) function, wherein the KDE function produces a smoothed estimate of the amplitude track (82), and wherein the smoothed estimate of the amplitude track (82) contains a plurality of peaks (84), each representing a number of times that a peak amplitude (68) occurs in the FFT (62);and identifying a highest peak (84A) of the smoothed estimate of the amplitude trace (82), wherein the highest peak (84A) represents the peak amplitude (68) that occurs most frequently in the FFT (62).

The invention discloses an in-vehicle sun visor sound box, which comprises a sun visor body, an installation cavity formed by a loudspeaker installation area and a circuit board integration area is arranged in the sun visor body, the inner wall of the installation cavity is covered with sound insulation cotton, and a plurality of sound production hole groups are formed in the surface of the installation cavity; the loudspeaker assembly comprises two panel loudspeakers which are coaxially arranged, the mounting axis of the loudspeaker assembly is consistent with the thickness direction of the sun shield body, and the loudspeaker assembly is fixed to the loudspeaker mounting area through a buffering and damping structure; the angle detection unit is arranged at a rotating shaft of the sun shield body and is used for acquiring and outputting an angle signal in real time; the audio input module is integrated in the circuit board integration area and receives an external sound source input signal; the self-adaptive sound effect processing module is integrated in the circuit board integration area and adjusts an input signal according to a mapping relation between the angle signal and a preset sound effect parameter; and the DSP signal processing unit is used for performing digital signal processing, frequency division and power amplification on the adjusted signal, generating a driving signal and outputting the driving signal to the flat panel loudspeaker.

The utility model relates to the technical field of cooling tower water recovery, in particular to a hyperbolic-curve-type cooling tower water recovery system which comprises a water condensation structure arranged in a tower body in the axial direction of the tower body and a sound wave generator arranged on the inner circumferential wall of the tower body and corresponding to the water condensation structure. The water condensation structure comprises a plurality of longitudinally-arranged partition plates, and the sound production direction of the sound wave generator intersects with the partition plates. Sound waves generated by the sound wave generator interact with hot and humid air in the tower body, the molecular motion state of water vapor carried in the hot and humid air is changed under the action of the sound waves, the condensation process of the water vapor is accelerated, and the longitudinally arranged partition plates are matched with the sound wave generator to further promote the condensation effect. Water drops condensed under the action of sound waves are attached to the partition plate and slide down along the surface of the partition plate to be recycled, so that the amount of water vapor discharged out of the tower along with hot air is greatly reduced, the water evaporation loss of the cooling tower is remarkably reduced, and the utilization rate of water resources is effectively improved.

The utility model discloses a buried long-distance gas riser internal detection device, and particularly relates to the technical field of gas riser detection, the buried long-distance gas riser internal detection device comprises a gas riser and a detection box installed on one side of the gas riser, one side of the gas riser close to the detection box is provided with a detection window, and one side of the detection box close to the gas riser is fixedly connected with a sealing gasket. And a sealing cover plate is arranged on one side of the detection box. According to the utility model, firstly, the pressure sensor is used for monitoring the gas pressure change condition in the gas vertical pipe in real time, and the flow sensor can be used for accurately measuring the flowing speed and the flow of gas in a pipeline; according to the invention, acoustic emission signals generated by abnormal conditions such as leakage and crack propagation in the gas pipeline can be sensitively captured through the arranged acoustic emission sensor, and potential damage and leakage hidden dangers in the pipeline can be found in time by analyzing the signals, so that the effect of detecting the interior of the gas vertical pipe is realized, and the detection accuracy is improved.

The invention relates to the technical field of creep age forming, in particular to a creep age forming integrated device integrating acoustic emission and electric pulse. A stable creep age temperature environment is provided through a heating furnace, and a mold assembly and a loading driving assembly in a loading system work cooperatively; accurate and controllable forming load can be applied to a to-be-formed component, so that the to-be-formed component is promoted to creep. An acoustic emission monitoring system integrated in a cavity of a heating furnace acquires acoustic signals generated by internal damage initiation and expansion of a to-be-formed component in real time through an acoustic emission sensor fixed on the surface of the component, and transmits the acoustic signals to external data processing equipment, so that online in-situ sensing of damage activity in the forming process is realized. The electric pulse repairing system integrated in the furnace can be triggered immediately, and the high-energy pulse current generated by the electric pulse generating equipment is guided into the component damage area by the electrode based on the damage state judged by the sound signal, so that the on-line in-situ repairing of the damage is realized.

This invention generally refers to the technology of sound emission in a vehicle to inform a person in the area surrounding the vehicle that the vehicle is moving or about to start moving in the direction of movement, for example forward or backward. More specifically, this invention refers to a method of sound alerting for vehicles (V) with a low noise level. A method of sound alerting for low-noise vehicles (TS), containing the stages during which:a) using external devices installed on the vehicle, input data parameters are obtained which include at least the following information: on activation / deactivation of the vehicle, information on the selected mode of movement of the vehicle, information on the vehicle speed, information on the geolocation zone in which the vehicle is located, information on the current time of day, information on the position of the visibility value controller;b) a sound data packet containing at least two event sounds, a parking sound, a forward motion sound consisting of four separate layers, and a reverse movement sound is received from the AVAS (Acoustic Vehicle Alert System) computing unit;c) the received data are processed at the stages a) and b) using a processing module, as a result of which a sound signal is generated for the alert mode depending on the values of the data of the input parameters and the sound data packet, and the alert volume level depending on information on the current time of day, information on the geolocation zone in which the vehicle is located, and the information on the position of the visibility value controller;d) a sound alerting is carried out using a vehicle speaker system with a set volume and a set sound mode, determined at step c).

The utility model discloses a display device, comprising a display panel configured to display image information; the backlight assembly comprises a plurality of lamp panels, the plurality of lamp panels are mutually spliced, the lamp panels are configured to provide backlight for the display panel, a cavity is formed between the lamp panels and the display panel, a plurality of splicing positions are formed among the plurality of lamp panels, and the plurality of splicing positions comprise a first splicing position located in the middle of the display equipment; the exciter is arranged on the side, away from the display panel, of the lamp panel, and the exciter is suitable for driving the lamp panels on the two sides of the first splicing position to vibrate synchronously. According to the display equipment, the exciters are arranged at the splicing positions close to the middle of the display equipment in the splicing positions, so that the lamp panel in the middle area can be well pushed to vibrate, the vibration area and the vibration quality are reduced, the vibration sensitivity and the high-frequency ductility can be improved, and the medium-high-frequency sound production performance of the display equipment is improved.

[Task] To provide a speaker device capable of diffusing an inaudible range sound output from a speaker and improving directional characteristics of the inaudible range sound.[Solution] Provided is a speaker device including a speaker that outputs an audible range sound and an inaudible range sound, and a diffusion member that is provided on a sound emission surface of the speaker and diffuses the inaudible range sound output from the speaker, in which the diffusion member is a member that propagates the audible range sound and the inaudible range sound inside.

To provide earphones with superior noise cancellation accuracy compared to conventional models. [Solution] The earphone comprises an earphone body having a housing in which a speaker unit is incorporated, and an earpiece attached to a roughly cylindrical sound conduit protruding from the housing. The sound conduit has, as separate spaces from each other, sound emission holes for releasing sound emitted from the speaker unit to the earpiece, and a microphone housing for housing a noise-canceling microphone.

A coffee bean grinder (100) includes a housing with a sound emitter (740) and sound sensor (750), a hopper (150) for storing and feeding coffee beans to a grinding mechanism, an output device (760), and a controller (702) electrically coupled with the sound emitter (740), sound sensor (750), and output device (760). The controller (702) includes a processor (710) and memory (720) with stored instructions. Execution of the instructions causes the controller (702) to control the sound emitter (740) to output a sound wave, sample the sound sensor (750) to obtain a measurement, determine whether the hopper (150) is empty, and control the output device (760) to indicate the hopper (150) is empty.

Disclosed is a weapon firing simulator device for attachment to a weapon and for simulating the firing of the weapon by a user without the use of ammunition or blanks. In some embodiments, the device controls at least one light emitter and at least one sound emitter in accordance with one or more operational modes including weapon stoppage drill; ammunition top up drill and weapon handling test drill. The device improves the training of a user for realistic combat situations.

The invention relates to a method for processing a hairpin (12) by means of a pulsed laser beam (18), wherein the method comprises: processing the hairpin (12) by means of the pulsed laser beam (18); detecting a sound emission from the hairpin (12) during the processing of the hairpin (12); and determining information about the processing of the hairpin (12) by analysing the detected sound emission.

The invention relates to the technical field of alloy powder preparation, discloses high-entropy alloy powder and a preparation process thereof, and aims at solving the problems that Y2O3 particles are easy to agglomerate, the process depends on experience and the batch stability is poor in a traditional ODS high-entropy alloy process, a preparation method combining multi-scale simulation with digital twinning optimization is constructed, critical ball milling impact energy is simulated through molecular dynamics, and the high-entropy alloy powder is obtained. The method comprises the following steps: judging a ball milling end point in real time by adopting an acoustic emission intelligent monitoring system, and performing internal oxidation in an Ar-(3-10)% O2 atmosphere by utilizing defect engineering to generate Y2O3 nano-phase particles of 5-10nm; monitoring an O + / Ar + spectral line intensity ratio through a fiber optic spectrometer in SPS sintering to intelligently trigger pressure loading; constructing a digital twinborn body to realize virtual iterative optimization; the yield strength of the prepared high-entropy alloy powder reaches 1200-1300 MPa, the ductility is larger than or equal to 12%, and the strength is improved by 20-30% compared with that of a traditional process.

The application discloses an audio playing system, method, driving device and storage medium, and relates to the technical field of audio playing systems. The audio playing system comprises an audio playing platform, which comprises a receiving module, an arbitration module and a first sending module. The receiving module is used for receiving a focus request. The arbitration module is used for performing focus arbitration processing in response to the focus request and obtaining a focus arbitration result. The first sending module is used for sending the focus arbitration result to at least a sound source object corresponding to the focus request, so that the sound source object sends audio data to a shared sound card according to the focus arbitration result. The second sending module is used for sending the focus arbitration result to a control module, so that the control module controls the shared sound card to play the audio data according to the focus arbitration result. The application provides a dedicated audio playing platform to perform focus arbitration, which can effectively coordinate the sound emission sequence in the audio playing system, control the shared sound card to play the audio data, avoid simultaneous sound emission, and improve driving safety.

The utility model provides a sound box, which comprises a shell, a loudspeaker, a passive basin and a top plate, the loudspeaker and the passive basin are arranged in the shell, the loudspeaker is arranged at the upper part, and the passive basin is arranged at the lower part; the top plate is fixed to the upper end of the shell, a gap is formed between the top plate and the shell, and the sound emitting direction of the loudspeaker faces the top plate. The utility model provides a sound box. According to the loudspeaker box, certain size adjustment can be adaptively performed, a better sound expression effect and a better bass effect can be achieved, and the loudspeaker box can be matched with the top plate, so that the sound transmission range can be expanded, and the overall use experience of the loudspeaker box is improved.

Automotive control software for controlling a sound emitted by a sound emitting device (12) storable in, and executable by, automotive electronic processing resources (2) of a motor vehicle (1). The automotive control software is designed to cause, when executed, such automotive electronic processing resources (2) to become configured to receive (block 4) an automotive quantity indicative of a number of revolutions per minute of an engine of the motor vehicle (1), an automotive quantity indicative of a current gear engaged for the motor vehicle (1), and an automotive quantity indicative of an engine torque delivered by the engine of the motor vehicle (1). Furthermore, the automotive control software is designed to cause, when executed, such automotive electronic processing resources (2) to become configured to determine (block 5) a current sound map (6) based on the current gear engaged; such current sound map (6) being configured to perform a mapping between number of revolutions per minute of the engine and acoustic quantities of a sound indicative of an engine torque delivered by the engine of the motor vehicle (1). The automotive control software is further designed to cause, when executed, such automotive electronic processing resources (2) to become configured to determine (block 7) one or more acoustic quantities of a sound to be emitted, indicative of the engine torque delivered by the engine of the motor vehicle (1), based on the automotive quantity indicative of the engine torque delivered by the engine of the motor vehicle (1), based on the number of revolutions per minute of the engine and based on the current sound map (6). Furthermore, the automotive control software is designed to cause, when executed, such automotive electronic processing resources (2) to become configured to control (8) the operation of the sound emitting device (12) so as to cause it to emit the sound, indicative of the engine torque delivered by the engine of the motor vehicle (1), based on the determined acoustic quantities.

The utility model discloses a signal acquisition device for building curtain wall safety intelligent alarm, belongs to the technical field of building structure health monitoring, and solves the technical problem that the existing monitoring system is not high in monitoring precision. The system comprises a control room host and a plurality of signal integration processing modules, the control room host is in wireless communication connection with the signal integration processing modules, and the signal integration processing modules are correspondingly and electrically connected with a plurality of sound wave detection sensors used for receiving instantaneous sound waves generated by damage of the glass curtain wall. Each sound wave detection sensor is correspondingly attached to a glass panel of a glass curtain wall, and each signal integration processing module is installed on a floor panel of a room. According to the utility model, the distributed sound sensing network architecture is adopted, the millisecond sound wave capture response speed is realized through the multi-node piezoelectric sound emission sensor array, the hysteresis of the traditional manual inspection is broken through, the precision is high, the operation and maintenance cost is low, and the system is particularly suitable for large-scale application scenes of super high-rise building groups.

The application discloses an ultrasonic spectrum cross-scale particle size distribution detection method and system, which comprises the following steps: generating multiple groups of burst sound emission signals with different frequency ranges based on a pre-constructed linear frequency modulation signal constraint; sequentially exciting multiple transducers to emit ultrasonic waves and receive ultrasonic waves passing through a liquid to be detected; recording the received signals passing through pure water and the liquid to be detected; calculating the amplitude information and the attenuation coefficient of the received signal waveform at multiple different frequencies; constructing the attenuation coefficient at different frequencies and forming an observation matrix G; combining a coupled phase model HT and a BLBL analog optical absorption law to construct a theoretical model matrix A; performing inversion by calculating the following formula: AF=G, to obtain a solid-liquid two-phase medium particle size distribution F. By combining multiple groups of transducers with different frequency bands into an array, wideband detection from several kHz to several tens of MHz is realized, and finally the particle size scale range is from several microns to several millimeters, which is suitable for the detection requirements of high and low volume concentration particle size distribution.

The utility model discloses a kind of sound box shell glue storage structures, it includes sound box shell and is set to the sound emission unit installation part of sound box shell, sound emission unit installation part and sound box shell are formed with glue storage groove between, the groove wall of glue storage groove is fixedly connected with limiting boss, the gap of limiting boss and sound emission unit is less than the gap of glue storage groove groove wall and sound emission unit.The utility model can effectively reduce the risk that sound emission unit separates from sound box shell in working process, and reduce the risk of sound box air leakage.

Disclosed is an ear device including: a housing; a sound emission rod that is connected to the housing and has a sound hole; and a movement adjuster that moves the sound emission rod in an axial direction of the sound emission rod relative to the housing according to a user operation on the movement adjuster. According to the user operation, a state of the sound emission rod is switchable between: a closed state in which the sound hole of the sound emission rod is to be placed inside an external auditory meatus of an ear of a user; and an open state in which the sound hole of the sound emission rod is to be placed outside the external auditory meatus.

The application discloses a hearing aid control method and system based on brain wave emission tinnitus treatment, the method comprises the following steps: configuring relief sound wave signal generation program in the first hearing aid and the second hearing aid respectively, controlling the first hearing aid and the second hearing aid to respectively emit the first sound wave signal and the second sound wave signal in different ear canals according to the relief sound wave signal generation program; presetting different frequencies of sound wave emission corresponding to the hearing aid, so that the first hearing aid and the second hearing aid emit corresponding first sound wave signals and second sound wave signals at a preset frequency difference; recording the operation time of the user on the relief sound wave of the hearing aid, and providing a modulation method of the relief sound wave for the first hearing aid or the second hearing aid, which is used for modulating the frequency difference of the first sound wave signal and the second sound wave signal; according to the recorded operation time of the user on the relief sound wave of the hearing aid, the tinnitus time rule of the user is analyzed, and the relief sound wave sound emission strategy for tinnitus relief is automatically provided.