305 results about "Sound propagation" patented technology

The invention relates to the technical field of underwater acoustic engineering and ocean exploration, in particular to a multi-channel underwater acoustic signal transmitting and measuring system and a signal processing method, which are used for solving the problems that the existing multi-channel underwater acoustic signal processing generally depends on fixed threshold detection or simple time sequence alignment, and the signal processing efficiency is low. The problem that residual vibration, local noise abrupt change or multipath reverberation is easily misjudged as an effective first arrival signal in a complex underwater environment due to the fact that the influence of the physical response characteristic of a transducer on emission time calibration is not considered and effective verification on whether a candidate arrival structure accords with a sound wave propagation physical rule is lacked is solved. According to the invention, a multi-channel energy time sequence and hydrophone space geometrical relationship is fused through an underwater sound propagation initial physical judgment module, a judgment mechanism is constructed based on distance-time consistency of sound propagation, and self-consistent verification is realized by combining a cross-channel arrival sequence and sound velocity constraint. And the accuracy, the robustness and the physical interpretability of the judgment of the effective launching time of the underwater sound are obviously improved.

The invention relates to the technical field of environmental noise monitoring, and discloses a road traffic noise intelligent monitoring and three-dimensional sound field reconstruction system, which comprises an acoustic sensor module, a data collection and storage module, a data analysis and evaluation module, a three-dimensional sound field construction and display module and a traffic flow feature library. According to the system, a differential geometry principle is adopted, a sound field is regarded as a Riemannian manifold with a local microstructure, and accurate description of an irregular sound field is realized through a curvature self-adaptive sound field manifold construction technology; introducing a covariant derivative in Riemannian geometry, and constructing a sound propagation model adapted to a complex road environment; and realizing hierarchical decomposition and reconstruction of the sound field by using a multi-scale analysis theory. According to the method, the sound source positioning precision and the calculation efficiency are improved, seamless analysis from microcosmic to macroscopic is realized, an innovative solution is provided for traffic and noise collaborative management, and intelligent traffic and environmental noise management are effectively supported.

The invention discloses a low-frequency sound propagation loss forecasting method suitable for a polar region sea area, and the method comprises the steps: building a two-dimensional ice layer model of a forecast sea area according to remote sensing data based on the setting that sea ice of the polar region sea area is a uniform elastic medium; calculating hydrological conditions of the ocean sound channel of the polar sea area; establishing a forecast sea area two-dimensional seabed model according to the seabed topography sediment database; an under-ice sound field model is constructed based on a three-dimensional cylindrical coordinate system, sound pressure from unit intensity sound sources with different sizes and depths to a receiving point in a forecast sea area is calculated through a frequency domain finite element method in combination with a PML technology, and sound propagation loss of a needed position is obtained through calculation. According to the method, the application limitation of traditional ray and normal wave theories under complex boundary conditions is broken through through a finite element method, a synergistic effect mechanism of actual ice layer parameter space change, submarine topography fluctuation and sound velocity profile gradient characteristics is systematically analyzed, and sound field modeling is more accurately carried out on different ice layers and submarine topographies in the Chukong sea region all year round; the influence of sound wave propagation is simulated.

A device to perform location-based audio signal compensation includes a memory configured to store instructions and one or more processors. The one or more processors are configured to execute the instructions to receive an audio input signal corresponding to sound received from a second device, determine position data indicative of a position of the device, and generate, based on the audio input signal, a compensation filter to be applied to an audio playback signal prior to playout from the second device, to at least partially compensate for distortion associated with sound propagation from the second device to the position of the device.

The invention relates to the technical field of ocean engineering monitoring and underwater acoustic sensing, in particular to an underwater engineering structure anomaly detection and positioning method based on a subsurface buoy acoustic array. Comprising the following steps: establishing an equivalent coupling sound propagation model; a subsurface buoy system is arranged in a water body area above an underwater engineering structure, an acoustic receiving array is fixedly arranged on the subsurface buoy system, and time synchronization, array element space position calibration and channel gain calibration are carried out on the acoustic receiving array; when an abnormal acoustic event with a spatial consistent propagation characteristic is detected, the acoustic receiving array enters an enhanced working mode and outputs a multi-channel enhanced acoustic signal; and in the enhanced working mode, outputting a judgment result of whether an abnormal acoustic event occurs or not, and solving to obtain a position estimation value of the abnormal event in the axial direction of the structure and a corresponding positioning confidence interval. The method is suitable for online anomaly monitoring and accurate positioning of an underwater linear engineering structure with a known space trend in a complex marine environment.

The invention provides a sound amplification device based on an M-H metamaterial and a sound transmission method using the sound amplification device, the sound amplification device at least comprises an upper shell, a lower shell and a waveguide located between the upper shell and the lower shell, and the waveguide is made of the Mie metamaterial; the waveguide comprises an outer wall, a plurality of sound wave inlets are formed in the outer wall, and the upper shell, the lower shell and the outer wall enclose a waveguide space; a through hole penetrating through the waveguide and the upper shell is formed in the waveguide space, and the through hole is a sound wave outlet in the sound amplification device; the waveguide comprises a plurality of fan parts which are arranged around the through hole in a circumferential radiation manner; a waveguide channel penetrating through the sound wave outlet and the sound wave inlet is formed between the adjacent fan parts; the control current of the sound source is determined by the size of the sound amplifying device and the scattering distribution condition of the sound amplifying device in different resonance modes, the sound at the sound wave outlet is larger than the sound at the sound source in energy level, and an included angle exists in the propagation direction. By determining the control current at the sound source which is most matched with the size of the sound amplifying device, the sound propagation control with low cost, high accuracy and wide application range is realized.

The invention discloses a low-altitude airspace noise assessment method based on space grids, and belongs to the technical field of low-altitude unmanned aerial vehicle flight monitoring and assessment. The objective of the invention is to solve the problem of depicting capability of a sound field state in a three-dimensional airspace. According to the method, noise sensitive objects in a low-altitude flight airspace and an air route range are identified, and a noise sensitive architectural space database with noise limit value labels is established based on set differentiated noise limit values; carrying out three-dimensional space rasterization modeling on the target evaluation area, and carrying out environment parameter assignment on each space grid unit to obtain a structured three-dimensional space grid framework of the target evaluation area; establishing a sound propagation attenuation model considering the multi-physics field coupling effect, and calculating the sound pressure intensity and the maximum allowable sound source intensity of each structured three-dimensional space grid unit; constructing a multi-dimensional data combined three-dimensional noise database; and carrying out airspace availability analysis and flight path feasibility evaluation. According to the invention, three-dimensional visualization and layering and partition quantization of low-altitude airspace noise influence are realized.

The invention discloses an air-ground cooperative intelligent monitoring method and system based on an iron tower base station, and the method comprises the steps: obtaining multi-mode video monitoring data of an air-ground cooperative monitoring region, and carrying out the feature extraction and analysis, and obtaining the position information of a target event; scheduling the unmanned aerial vehicle to collect close-range video monitoring data for analysis and anomaly detection based on the position information, and optimizing the position information based on a detection result to obtain optimized position information; performing reverse path calculation based on the optimized position information to obtain an upstream associated road section of the target event; and creating an event brief report and a playing frequency dynamic adjustment model to broadcast the traffic event, and pushing broadcast content to an upstream associated road section of the target event. According to the invention, the coverage range of video monitoring is improved, abnormal events can be accurately positioned, the video monitoring technology is combined with cloud broadcasting, effective utilization and fine management of broadcasting resources are realized, and the accuracy and coverage range of sound transmission are improved.

The invention provides a vector magnetic field detection method based on a surface acoustic wave magnetic field directivity model, and the method employs an external magnetic field to act on a magnetic sensitive film on a sound propagation path to generate a dynamic magnetoelastic coupling effect, modulates the propagation characteristics of surface acoustic waves, and carries out the decoupling of a sound signal, and obtains the magnetic field information. The response value of the sensor is influenced by the included angle between the direction of the external magnetic field and the anisotropic axis, so that the angle orientation of the sensor in the space and the size and direction of the magnetic field can be quantitatively calibrated by projecting the magnetic field to be measured in the space into a coordinate system of the sensor, and a surface acoustic wave magnetic field directivity model is constructed. The surface acoustic wave magnetic field sensing technology has the advantages of high sensitivity, quick response and the like, and the vector magnetic field detection method can realize the direction positioning function of a full-plane magnetic field and has important practical value in the application field of space vector magnetic field detection.

Provided is a headset including a speaker and a wearing part. The speaker includes a diaphragm. The wearing part includes a cavity and a sound output port. The cavity includes an accommodating room and an acoustic channel. The speaker is arranged in the accommodating room. The diaphragm is arranged facing the acoustic channel. The sound output port is arranged on an end of the acoustic channel away from the accommodating room. The acoustic channel extends curvedly in a reference plane. In the sound propagation direction, the cross-sectional area of the acoustic channel progressively increases.

The invention belongs to the technical field of underwater acoustic measurement, and relates to an indirect-coherent measurement method for the forward acoustic scattering target intensity of an underwater object. The method comprises the following steps: respectively carrying out background field measurement when an underwater object does not exist and target field measurement when the underwater object exists, and storing and recording receiving signals of an observation channel and a reference channel; based on the measurement signals of the background field and the target field, through time delay estimation and signal coherence subtraction processing, forward sound scattering signals of the underwater object are extracted; and calculating the forward sound scattering target intensity of the underwater object by using the extracted forward sound scattering signal based on the sound propagation loss estimation and the signal power. According to the method, after the forward sound scattering wave signal of the object is extracted, the definition formula of the target intensity in the sonar equation is directly used for measuring and calculating the forward sound scattering target intensity, the number of calculation links is small, and the calculation efficiency is high.

Embodiments of the present application disclose a river bed load transport characteristic determination method and device, electronic equipment and a computer readable medium, relating to the field of engineering technology. The method performs fast Fourier transform on the sound pressure signals of the microphone array to obtain a sound pressure matrix in the frequency domain; based on the sound pressure matrix, cross-spectrum operation is performed to obtain a cross-spectrum matrix; based on each scanning grid point j on the surface of the monitoring sensor plate as an imaginary sound source point, a sound propagation model is selected according to the aerodynamics theory to determine the sound signal monitored by any microphone; each grid point is scanned, the auto-spectrum of the simulated sound signal is calculated, and the sound source holographic image of the bed load shock wave is determined; the sound source intensity is simulated, the bed load spatial position is obtained, and the bed load particle size component information is obtained through the calibration function relationship. That is, in the present application, the bed load spatial position and the bed load particle size component information are obtained, this method can accurately determine the transport characteristics of the bed load, and becomes an important support for quantifying the disaster prevention and reduction work of mountainous rivers.

1. Name of the product in this design: Intelligent Array Microphone. 2. Purpose of this design: Intelligent array microphone for sound propagation. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

A method for determining at least one of a mud density or a standoff, includes determining, a short-spaced density, a long-spaced density, and a time of sound propagation between a tool body and a borehole wall. The method also includes determining, based at least in part on the short-spaced density and the long-spaced density, a formation density using a spine-and-rib-diagram. The method further includes determining a distance-to-spine value based on the short-spaced density, the long-spaced density, and the formation density. The method includes determining a mud density approximation, based at least on the distance-to-spine value. The method also includes determining a standoff approximation, based at least on the mud density approximation. The method further includes determining, based at least on the mud density approximation and the standoff approximation, at least one of a computed mud density or a computed standoff.

The utility model relates to the technical field of alarm devices, in particular to a curing degassing time alarm device which comprises an alarm body, supporting columns and a limiting ring, driving wheels are rotationally installed on the two sides of the outer wall of the upper end of the alarm body, the supporting columns are installed on the two sides of the outer wall of the upper end of the alarm body, and the limiting ring is arranged on the supporting columns. A first driven wheel is rotatably mounted on one side of the outer wall of the supporting column, an alarm lamp is mounted on one side of the outer wall of the upper end of the supporting column, a supporting rod is mounted on one side of the outer wall of the upper end of the first driven wheel, and a limiting ring is mounted on one side of the outer wall of the upper end of the alarm body. The comprehensiveness of the transmission direction of the alarm sound is improved, the cleanliness of the surface of the alarm lamp is kept, the alarm brightness of the alarm lamp is ensured, and the alarm effect of the alarm device is improved.

An audio device is disclosed, comprising multiple microphones and an audio module. The multiple microphones generate multiple audio signals. The audio module coupled to the multiple microphones comprises a processor, a storage media and a post-processing circuit. The storage media includes instructions operable to be executed by the processor to perform operations comprising: producing multiple instantaneous relative transfer functions (IRTFs) using a known adaptive algorithm according to multiple spectral representations for multiple first sample values in current frames of the multiple audio signals; and, performing distractor suppression over the multiple spectral representations and the multiple IRTFs using an end-to-end neural network to generate a compensation mask. The post-processing circuit generates an audio output signal according to the compensation mask. Each IRTF represents a difference in sound propagation between each predefined microphone and a reference microphone of the microphones relative to sound sources.

The application discloses a kind of sea surface convergence zone parameter calculation method and system based on sound propagation loss, method includes: propagation loss acquisition step: according to horizontal sound velocity profile variation data, seabed topography variation data and seabed sediment parameter, propagation loss data is obtained by sound propagation model;Convergence path acquisition step: based on propagation loss data, convergence path data and convergence zone quantity parameter are obtained by constant false alarm processing technique and connected domain technique;Convergence zone center point acquisition step: based on convergence path data, the position of convergence zone center point is determined by constant false alarm technique;Convergence zone boundary acquisition step: based on the gradient variation characteristics of convergence zone center point position combined with propagation loss data, the range boundary of the range boundary of convergence zone center point position is determined, and the detection and identification of underwater acoustic field convergence zone under complex marine environment are realized by the application.

Embodiments of the present application relate to the technical field of audio products, and disclose a sound cavity structure and an electronic device. The sound cavity structure comprises a cavity body. The cavity body is provided with an inner cavity, a mounting hole in communication with the inner cavity and used for connecting a loudspeaker, and a sound outlet hole in communication with the inner cavity. The inner cavity is provided with a sound transmission channel for transmitting sound emitted by the loudspeaker to the sound outlet hole. The sound transmission channel comprises at least one layer of sub-channels arranged in the axial direction of the mounting hole, and there are a plurality of sub-channels located in a same layer. Moreover, the lengths of the plurality of sub-channels gradually increase in a direction away from the center of the inner cavity, and two adjacent sub-channels are in communication with each other. The sound cavity structure and the electronic device provided by the embodiments of the present application can enhance the bass effect of the electronic device within a limited space at low costs.

The utility model provides an electronic device. The electronic equipment comprises a shell, a loudspeaker and a fragrance card, a first space is defined by the shell, the shell is provided with a first sound outlet hole, the first sound outlet hole is communicated with the first space and the exterior of the shell, the loudspeaker is installed in the first space, and the first sound outlet hole is used for transmitting sound emitted by the loudspeaker to the exterior of the shell. The fragrance card is detachably connected in the first space, an air passage is arranged in the first space, the air passage is communicated with the first sound outlet hole, the air passage is used for transmitting fragrance generated by the fragrance card to the first sound outlet hole, and the first sound outlet hole is used for transmitting the fragrance in the air passage to the outside of the shell. The fragrance card of the electronic equipment can emit fragrance, and the fragrance can be transmitted to the outside of the shell through the first sound outlet hole. The shell of the electronic equipment does not need to be additionally provided with through holes for emitting fragrance, so that the shell of the electronic equipment is provided with fewer holes, the appearance integrity of the electronic equipment is better, and dust and water vapor are not easy to introduce.

The utility model belongs to the technical field of earphones, and particularly relates to a sound quality enhancing earphone structure which comprises an earphone body and an ear hook connected with the earphone body. The earphone body comprises an external earphone shell; a mounting cavity is formed in the earphone shell, a sound outlet hole communicated with the mounting cavity is formed in the earphone shell, the position of the sound outlet hole is aligned with the position of an ear canal when the earphone is worn, a sound production unit is arranged in the mounting cavity, the sound production unit comprises a moving coil loudspeaker and a sound guide tube component connected with the moving coil loudspeaker, and a sound outlet hole communicated with the front sound cavity is formed in the earphone shell; the sound guide tube component comprises a sound guide channel. And the sound outlet hole faces the external auditory canal of the human body, so that the medium-high frequency directivity is strong, the loudness is large, and the effect of enhancing the medium-high frequency is achieved. Meanwhile, the sound guide tube part is arranged, the sound transmission direction can be changed through a sound guide channel, the peak resonant frequency of a harmonic peak of air guide sound in a middle-high frequency band or a high frequency band can be weakened conveniently, and the effect of middle and low frequencies can be effectively enhanced.

The utility model discloses a cover body assembly which comprises a cover body, the cover body is provided with a gas inlet channel and a fuel gas channel, the two ends of the fuel gas channel are correspondingly provided with a gas inlet and a gas outlet, the gas inlet is communicated with the gas inlet channel, and the gas outlet is used for being communicated with a combustion cylinder. Wherein the fuel gas channel is provided with at least one section of narrowing part, the cross sectional area of the narrowing part is smaller than that of the fuel gas channel, and / or the fuel gas channel is provided with at least one section of expansion part, and the cross sectional area of the expansion part is larger than that of the fuel gas channel. Therefore, the change of acoustic impedance can be caused in the acoustic propagation process, and the reflection and interference phenomena of sound waves are generated, that is, the noise generated in the rapid flowing process of fuel gas can be reflected, interfered and the like at the narrowing part or the expansion part, so that the noise generated in the use process of the heat exchanger can be reduced. In addition, the utility model further discloses the heat exchanger with the cover body assembly.

The invention discloses a flow-induced noise integration method, device and equipment based on a finite element method and a storage medium, and relates to the technical field of noise integration, and the method comprises the steps: obtaining an aerodynamic noise source based on a sound source type and a time domain flow field file; transmitting an aerodynamic noise source from the fluid grid to the acoustic grid based on the acoustic grid file and a data mapping algorithm to obtain a time domain sound source; converting the time domain sound source into a frequency domain sound source based on a time-frequency conversion strategy; and constructing a numerical model based on the frequency domain sound source, and solving the numerical model to obtain a sound propagation result. The problems that in a traditional mixing method, due to the fact that a plurality of independent modules exchange large-scale intermediate data through a file system, the process is split, reading and writing are time-consuming, and user operation is tedious are solved, integrated solving of aerodynamic noise simulation from sound source extraction to sound field calculation is achieved, user operation steps are simplified, and user experience is improved. Therefore, on the premise that the calculation precision is guaranteed, the overall execution efficiency and the automation level of the simulation process are remarkably improved.

The invention relates to a regional ocean sound propagation field millisecond-level prediction method based on a deep neural network, and the method comprises the steps: constructing two factors which have the greatest influence on a sound propagation field for a target region: a sound velocity profile and a terrain; an environment information data set of an area sound propagation field is constructed by constructing an annual sound velocity profile of a target area node and building a large number of two-dimensional terrain models by extending around the node by 360 degrees, and the sound propagation fields of the area under different environment conditions are calculated by using a traditional sound field calculation model to serve as a training set; feature simplification parameters of the sound velocity profile and the terrain in each environment sample are extracted to serve as guide information of a corresponding sound propagation field, and a deep neural network is built to learn distribution rules of the sound propagation fields under different environment conditions in the area; and finally, the trained model can quickly predict the corresponding sound propagation field in the region according to different environmental condition characteristic batches.

The application relates to the technical field of virtual engine and discloses an immersive directional sound effect simulation optimization method and system based on a virtual engine. The method submits an acoustic ray tracing task to a hardware light tracing unit of a graphic processor at an acoustic solving rate lower than a graphic frame rate, accesses the same level of a bounding box acceleration structure as a graphic light tracing task, solves an effective sound propagation path according to a graphic material identification of a hit triangular facet, generates a path signature according to a sound source and the hit triangular facets successively passed through, and packs the path signature into an acoustic state snapshot for output; an audio rendering thread runs at an audio block rate higher than the acoustic solving rate, matches the snapshot and an active path set according to the signature, distinguishes a continuous path, a newborn path and a dying path, and respectively performs smoothing, fading in and fading out, and performs binauralization rendering on a sound source signal to obtain output binaural signals. The application solves the acoustic by reusing the graphic side acceleration structure, and continuously presents the directional sound effect without artifacts at a lower solving rate.

The invention relates to a measurement and inversion reconstruction method for a helicopter rotor sound radiation ball in an acoustic wind tunnel, and relates to the technical field of helicopter aeroacoustics wind tunnel test technology and sound target characteristics, and the method comprises the steps: measuring the noise radiated by a helicopter rotor in the acoustic wind tunnel through a hemispherical far-field noise measurement device; noise signals of the rotor in different directions are obtained, and a rotor sound radiation ball model is constructed; based on a sound propagation theory in a flow field, constructing a propagation model from the surface of the sound radiation ball model to the position of a microphone, and based on the influence of background noise, establishing a sound propagation equation from the surface of the sound radiation ball model to the microphone in the hemispherical far-field noise measurement device; and converting the sound propagation equation into solving a least square problem, solving to obtain sound source distribution on the surface of the sound radiation ball model, and reconstructing noise at any position of the far field of the helicopter rotor. The method can be suitable for reconstructing the helicopter rotor sound radiation ball in complex environments such as acoustic wind tunnels and high background noise, and practical research and application are carried out.

The utility model discloses a head-mounted game earphone, which comprises two symmetrically distributed earmuff shells, loudspeakers are arranged in the earmuff shells, a plurality of through holes for sound transmission are arranged on the earmuff shells, flexible sleeves are sleeved outside the earmuff shells, a head beam is arranged between the two earmuff shells, and connecting mechanisms are arranged at two ends of the head beam. The connecting mechanism is connected with the earmuff shell on the same side, and the earmuff shell is connected with the head beam through the connecting mechanism. The elastic sheet can be bent when being stressed and is matched with the elastic characteristic of the head beam, so that the earmuff shell can move within a certain range and keep a state of being tightly attached to the ear, and the earmuff is suitable for users with different head shapes. Meanwhile, the ball body can move in the groove body, the earmuff shell can freely move in a small range, and the earmuff has the advantage of being high in flexibility, so that after the earmuff shell is tightly attached to the ear, the position of the earmuff shell is finely adjusted, and the earmuff shell is tightly attached to the ear.

The application discloses a charging pile soundproof cover and belongs to the technical field of charging piles. The soundproof cover comprises an outer cover. The outer cover is the main structure of the soundproof cover and is detachably fixed on the air inlet and outlet of the charging equipment through a mounting piece. The outer cover defines a cavity for accommodating and guiding the propagation of sound. The cavity has a first opening through which sound propagates into the cavity of the outer cover. The inner wall of the outer cover is covered with a sound-absorbing layer for absorbing sound entering the cavity. The sound propagating into the cavity of the outer cover through the first opening is absorbed by the sound-absorbing layer covering the inner wall of the outer cover, thereby effectively reducing the propagation of sound of the charging equipment. Further, the cavity also has a second opening adjacent to the first opening, through which the heat of the air inlet and outlet of the charging equipment can be discharged. At the same time, by adjusting the fixed position of the outer cover to change the opening direction of the second opening, the propagation direction of residual sound can be changed, thereby minimizing the influence on the user.

The utility model discloses a kind of surface sound source auxiliary sound systems, including frame, vibrating sound board, driver, sound insulation board and backboard being set to the rear side of the frame;The driver is set on the vibrating sound board, the vibrating sound board and the sound insulation board are set in the frame, the sound insulation board is set between the vibrating sound board and the backboard;First shock absorber is arranged between the vibrating sound board and the frame, second shock absorber is arranged between the sound insulation board and the frame.The surface sound source auxiliary sound system of the utility model passes through reasonable structural design, effectively blocks and absorbs the sound diffused to back, reduces the waste of sound energy, improves the propagation efficiency and directivity of sound, improves tone quality and sound propagation effect.

The invention discloses a method for simulating sound propagation in a porous medium based on a QSGS-LBM, and the method comprises the steps: building a sound propagation physical model of an anisotropic porous medium based on the QSGS-LBM, and obtaining the density, pressure, speed and temperature distribution of a flow field during sound wave propagation; obtaining a density distribution function evolution equation and a temperature distribution function evolution equation based on the D2Q9 discrete velocity space; setting QSGS method parameters in the flow field area, and generating a porous medium model; obtaining a distribution function of each grid point after collision and migration, and applying boundary constraint conditions to the solid-liquid area based on the distribution function; and obtaining macroscopic variables on the grid points. According to the method, the iterative calculation time for multiple groups of porosity and structure parameters is remarkably shortened, the attenuation law of sound waves, sound pressure pulsation and temperature change caused by energy dissipation can be effectively captured, and the goodness of fit between a simulation result and a theoretical analytical solution is higher.

The present application relates to the field of sound technology, and discloses a multifunctional rotary sound equipment, which comprises a sound equipment body, a base connected to the sound equipment body through a rotating shaft, characterized in that a rotating ring capable of lifting and sliding is arranged on the rotating shaft, and a connecting rod is arranged between the rotating ring and the sound equipment body, the connecting rod pushes the sound equipment body to overturn in a vertical plane, and the rotating shaft is rotationally connected to the bottom of the sound equipment body.In the present application, when the number of people in front of the sound equipment body increases, the sound emitted by the vertically placed sound equipment body will be blocked by the dense crowd in front, resulting in poor sound propagation. Therefore, the position state of the crowd is processed into an electrical signal by a sensor for monitoring and transmitted to a driving mechanism, and then the driving mechanism is opened to drive the rotating ring to lift on the through rod, and then the sound equipment body is lifted at an angle, so that the broadcasting path is lifted at an angle and is no longer directly opposite the crowd, thereby reducing the obstruction of the broadcasting path and making the broadcasting more smooth.