260 results about "Sound emission" patented technology

The invention relates to the technical field of elevator equipment state monitoring and fault diagnosis, and discloses an elevator traction machine running state real-time diagnosis method and system based on high-frequency sampling. According to the method, vibration (larger than or equal to 20 kHz), current (larger than or equal to 10 kHz), sound / sound emission, temperature and rotating speed signals of a traction machine are synchronously collected through a high-frequency multi-mode sensor array; capturing early weak fault transient characteristics; the edge computing unit completes data preprocessing, time synchronization, feature extraction and anomaly detection, and uploads key data to a cloud end through cloud-edge collaboration; the cloud end adopts a working condition self-adaptive strategy and a multi-modal fusion model to carry out deep diagnosis, and outputs fault types, positions and grades; and combining incremental learning and a degradation model to realize health quantification and residual life prediction. Through fusion of high-frequency data capture and an intelligent algorithm, the early fault detection capability, variable working condition adaptability and diagnosis real-time performance of the traction machine are improved, and a solution is provided for predictive maintenance of an elevator.

The invention relates to the technical field of rock mass earthquake dynamic response, and discloses a layered rock mass earthquake dynamic response multi-scale monitoring system and method, and the system comprises a rock mass three-dimensional geological module, a simulation setting module and an earthquake simulation module. The method comprises the following steps: establishing a layered rock mass three-dimensional geologic model; the method comprises the following steps: identifying a dangerous rock mass structural surface, monitoring slope displacement, and installing sound emission monitoring equipment at a key position to form a three-dimensional monitoring network; a layered rock mass and a broken area in the layered rock mass three-dimensional geological model are divided into discrete element areas, and a continuous medium area is divided into finite difference areas; coupling the discrete element region and the finite difference region; inputting the seismic wave as a dynamic boundary condition into the finite difference region, transmitting a response to the discrete element region through a coupling interface, and simulating a rock stratum and rock mass dynamic fracture process; and the crack propagation particle size and the original stress propagation are transmitted to the cloud platform. The geometric morphology and the internal structure of the rock mass can be accurately reflected.

According to the ring main unit with the intelligent online partial discharge detection system provided by the invention, the problem of multisource data asynchronization is solved through a four-dimensional space-time synchronous acquisition mechanism, so that the time alignment error of ultrahigh frequency and ultrasonic signals is lower, and the positioning precision is higher; the edge computing unit is used for executing adaptive filtering and pulse extraction, so that the effective data compression rate is greatly increased, the bandwidth requirement is reduced, and quick response within 3 seconds is realized; cross-modal coupling factor quantification electromagnetic-acoustic emission correlation characteristics are innovatively proposed, the contribution degree of a sensor is adaptively adjusted in combination with a dynamic weight distribution strategy, and high discharge type recognition accuracy is still kept in a strong electromagnetic interference environment; the space-time heterogeneous data is cooperatively processed through the two-channel deep learning model, the composite discharge mode is effectively identified, and the false alarm rate is lower compared with a traditional method; in addition, the system automatically and incrementally trains the model per week, continuously adapts to signal attenuation caused by equipment aging, and prolongs the effective monitoring life by more than three times.

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 relates to the technical field of oil-gas field oil well fault diagnosis, in particular to an oil-gas field oil well intelligent fault diagnosis method and device based on a swan-gap system. According to the method, the multi-mode equipment is connected through the swan-Mongolia distributed soft bus to collect data, and the edge computing nodes are deployed to perform local diagnosis, so that the dependence on the network is reduced, and the real-time performance of fault diagnosis is improved; a generalized Choquet integral synthesis model is used for fusing load displacement, acoustic emission and motor electrical parameter sub-risk values, the fault risk is comprehensively evaluated, the diagnosis accuracy is improved, and the missed diagnosis and misdiagnosis probability is reduced; self-inspection data such as hardware state and signal quality are collected through the sensor self-inspection layer, a fusion instruction is generated through the data credibility analysis layer to adjust data weight, a fault sensor is isolated, and data reliability is guaranteed; based on hardware and communication parameter analysis of network transmission data, a network adaptation execution instruction is dynamically generated, stable data transmission is ensured, and the anti-interference capability of the system is improved.

Display device. A display device is disclosed, including a display panel configured to display an image by emitting light; a rear surface structure configured to surround a side surface and a rear surface of the display panel; a vibration generation device connected with the rear surface structure and configured to vibrate the display panel; a rear sound emission portion located between the display panel and the rear surface structure; and a rear sound guide member located between the display panel and the rear surface structure to surround the vibration generation device in a spiral shape and configured to be connected with the rear sound emission portion.

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.

This application relates to a method, vehicle, device, and medium for sharing external speakers across vehicle domains. The method includes: acquiring the actual vehicle speed and status information to generate a chassis domain horn sound source signal and / or at least one cabin domain interactive sound source signal, wherein the at least one cabin domain interactive sound source signal includes at least one of a low-speed pedestrian warning system sound source signal, an external media interactive sound source signal, and an in-vehicle sound source signal; based on the chassis domain horn sound source signal and / or at least one cabin domain interactive sound source signal, and in conjunction with a preset sound source management strategy, enabling a target external speaker to replace the external snail horn in performing corresponding sound source playback operations in the chassis domain and / or cabin domain. This application effectively reduces redundant vehicle parts, lowers overall vehicle costs, and improves the user experience by integrating low-speed pedestrian warning functions, interactive functions, and external speaker functions to share external speakers for sound emission.

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.

The utility model discloses a wireless stethoscope which comprises a stethoscope shell and a handheld shell, one end of the handheld shell is fixedly connected with a connecting block, the other end of the connecting block is fixedly connected with the outer wall of the stethoscope shell, and the stethoscope shell is fixedly installed at the end of the handheld shell through the connecting block. A trumpet-shaped opening is formed in one side of the auscultation shell, a mounting ring is fixedly arranged at the position, located on the inner wall of the trumpet-shaped opening, of the auscultation shell, and a sound filtering diaphragm is arranged in the middle of the interior of the mounting ring. According to the utility model, the plurality of microphones are uniformly arranged on the mounting ring in a surrounding manner, so that a microphone matrix is formed on the mounting ring, the sound direction detection sensor on the PLC judges the sound emitting direction according to the sound receiving sequence of the different microphones, and the sound direction is displayed on the display; therefore, a doctor can accurately find the sounding position according to the direction displayed on the display, and the doctor can judge the illness state of a patient.

The present invention provides a method and device for reducing the power consumption of a speaker module. The method comprises: receiving sound characterization parameters of the speaker module; determining the initial output voltage of the speaker module based on the sound characterization parameters and a mapping relationship library; and reducing the power consumption of the speaker module based on the initial output voltage. To address the problems of the prior art, the method and device for reducing the power consumption of a speaker module provided by the present invention automatically adjust the output voltage of the speaker module according to different sound emission scenarios, thereby reducing the required voltage while maintaining the original low-frequency performance of the overall system, thereby reducing power consumption.

This invention discloses a multi-axis linkage precision drilling control system and method for CNC six-sided drilling, belonging to the field of CNC six-sided drilling control technology, including the following steps: S1: self-calibration before machining; S2: adaptive control during machining, integrating multi-source sensor data to perform plate deformation compensation, multi-axis dynamic feedforward and cross-coupling control, drill bit runout suppression, and thermal error correction; S3: verification and self-learning after machining, detecting characteristic hole position deviations; This invention integrates multi-source sensor real-time perception, model prediction and cross-coupling multi-axis linkage control, biomimetic flexible clamping dynamic adjustment, active suppression of drill bit runout and self-repair of chipping sound emission, real-time identification and strategy avoidance of internal defects through deep learning of machining acoustic patterns, and online updating of thermal errors and self-learning of process parameters based on recursive least squares and Bayesian optimization, forming a complete closed-loop system of pre-machining self-calibration, in-machining adaptive compensation, and post-machining self-learning.

(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.

The present invention provides an optimum acoustic XR for each user environment by sensing the generation position of a real sound generated in real space and user environment information, and sending reproduction information for each user calculated from the information and presentation sound data corresponding to a user request together. In this control method, an acoustic signal that is listened to by a user wearing a sound emission device, which enables external sound to be listened to and is mounted on the head of the user, is controlled. In the control method, a relationship between a predetermined microphone and the user is acquired, and control is performed such that a predetermined acoustic signal is emitted from the sound emission device on the basis of the relationship. The relationship includes a distance and / or a transmission characteristic, and the predetermined acoustic signal takes into account the time that elapses before the direct sound of the acoustic signal emitted from a predetermined sound source arrives at the user, and the time at which the predetermined acoustic signal is emitted.

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.

To provide a sound emission control device that performs adjustment so that sound in a specific frequency band is heard at a desired sound pressure level.SOLUTION: A sound emission control device 200 has a tapered diffuser 230 whose tip faces a sound-emitting surface of a diaphragm 120 of a speaker unit 100, and a first waveguide 210 which surrounds a vibration axis Z of the diaphragm 120 and has an aperture 201 allowing sound emitted from the diaphragm 120 to pass through and propagate towards a diffuser 230. The distance of the aperture 201 from a vibration axis Z varies along the circumferential direction around the vibration axis Z.SELECTED DRAWING: Figure 1

The application discloses a wide-range sound transmission triangular sound box, which comprises a sound box body, the cross section of the sound box body is triangular, left and right sides of the sound box body are respectively provided with longitudinal left and right mounting plates, the left mounting plate is sequentially provided with a first high-pitch loudspeaker, a first medium-pitch loudspeaker and a first low-pitch loudspeaker from top to bottom, the right mounting plate is sequentially provided with a second low-pitch loudspeaker, a second medium-pitch loudspeaker and a second high-pitch loudspeaker from top to bottom, the first high-pitch loudspeaker and the second low-pitch loudspeaker are arranged on the same horizontal line, the first medium-pitch loudspeaker and the second medium-pitch loudspeaker are arranged on the same horizontal line, and the first low-pitch loudspeaker and the second high-pitch loudspeaker are arranged on the same horizontal line. The left and right sides of the sound box body can emit sound, the sound transmission range is wide, the sound transmission coverage angle reaches more than 240 degrees, the sound transmission effect on the surrounding space is good, the loudspeakers emit sound in combination, the mutual interference is small, the sound emission effect is good, the sound box is convenient to use, and the consumer experience is good.

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.

A hearing aid having one or more biometrical sensors, where the hearing aid comprises at least one microphone configured to receive a sound of the surroundings, a signal processor configured to process the sound received from the microphone and a speaker unit configuration configured to emit the processed sound into the ear of a user, wherein one or more sensors is positioned substantially in the ear together with at least a part of the hearing aid, wherein the one or more sensors is configured as biometrical sensors configured for recording health data of a hearing aid user.

A terminal apparatus includes a first structural component, a second structural component, a third structural component, and at least one acoustic element, where the second structural component is located between the first structural component and the third structural component, and the first structural component, the second structural component, and the third structural component surround and form a cavity; the acoustic element is accommodated in the cavity; at least one sound emission slot is formed between the first structural component and the second structural component and / or between the second structural component and the third structural component, a sound guide slot is in communication with the sound emission slot, the sound emission slot is located on a side of the sound guide slot that faces away from the acoustic element, and the acoustic element transmits sound to the outside through the sound guide slot and the sound emission slot.

The present application belongs to the field of marine hydraulic system, and particularly relates to a marine hydraulic system fault diagnosis system and device, comprising the following steps: constructing a knowledge base based on a fault tree structure; obtaining fault phenomenon description keywords and performing a first matching with the knowledge base; based on the first matching result and the first reasoning fault diagnosis result, continuing to obtain fault phenomenon description keywords and performing a second matching with the knowledge base; repeating the steps until a component-level fault is matched, then outputting the fault diagnosis result and recording it into weight analysis. The present application can greatly improve the diagnosis efficiency and accuracy based on fault tree and fault probability matching and reasoning. The present application has high integration and is convenient to carry; non-invasive measuring elements are adopted, which can non-contact measure sound emission, vibration, rotating speed, temperature and other signals, and can intelligently judge the fault according to the signals. Moreover, the present application can reduce the dependence on related personnel and reduce the difficulty of marine hydraulic system fault diagnosis.

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).