143 results about "Acoustic effect" patented technology

The invention relates to the technical field of audio signal processing, and discloses a room sound correction method, device and equipment for audio equipment and a storage medium, which are used for improving the accuracy and correction effect of correction parameters and effectively improving the acoustic effect of the audio equipment in a room. The room sound correction method of the audio equipment comprises the following steps: acquiring response data of a room to a multi-band preset test signal, and extracting room acoustic data by adopting a time-frequency conjoint analysis method, the room acoustic data comprising frequency attenuation, reflection paths, phase shifts and reverberation time information of different bands; based on the room acoustic data, performing compensation processing by using preset microphone calibration data to obtain a calibrated frequency response curve; performing fitting calculation on a preset ideal frequency curve and the calibrated frequency response curve according to an optimization algorithm to obtain specific correction parameters of the room; and correspondingly adjusting the output of the audio equipment according to the correction parameter.

The invention discloses an Internet of Things alarm audio call scheduling method and system, and relates to the technical field of Internet of Things intelligent decision, and the method comprises the steps: receiving an alarm request message from an Internet of Things sensing terminal, and carrying out the alarm audio call scheduling according to a device identifier and a region code in the alarm request message; collecting and generating a multi-dimensional information report of real-time environment noise data, audio playing equipment state information and user state information; according to the multi-dimensional information report, generating a dynamic priority score of the alarm request message by querying a preset strategy library; and sorting the dynamic priority scores of the alarm request messages to be processed, and generating a preliminary scheduling strategy for suggesting playing equipment and broadcasting parameters for the alarm request message with the highest priority. According to the method, high-fidelity simulation is performed through the acoustic digital twin model to generate the intelligibility index report, the optimal strategy is selected based on the simulation result to generate the execution instruction, and the execution instruction is issued to the target audio equipment, so that full-process intelligent scheduling from multi-dimensional dynamic perception to acoustic effect optimization is realized.

This application provides a system for generating a drive signal and a method for generating a drive signal for driving a two-in-one device integrating a first component capable of generating sound and a second component capable of generating vibration. The system includes an audio signal pre-processing module, configured to perform low-frequency filtering and acoustic effect processing on an input signal according to a high-pass filtering parameter to obtain an audio signal; a vibration signal generation module, configured to generate a vibration signal based on an acoustic characteristic of the audio signal or a preset vibration library; a signal synthesis module, configured to superpose the audio signal with the vibration signal to output the drive signal; and an amplitude-limiting control module, configured to determine whether the audio signal and the vibration signal exceeds a maximum allowable range when superposed, and attenuate the audio signal and / or the vibration signal.

The invention provides an acoustic system control method based on a scene type and a related device, and the method comprises the steps: carrying out the comprehensive analysis of a scene based on the collected real-time scene data in a current site, and obtaining the scene type of the current site at each time; when it is monitored that the current site is switched from the first scene type to the second scene type, based on a first acoustic parameter corresponding to the first scene type and a second acoustic parameter corresponding to the second scene type, an acoustic system is controlled to be transitionally switched to a target acoustic parameter; environment data of the current site at the time corresponding to the second scene type are collected; optimizing the second acoustic parameter based on the environmental data to obtain an optimized acoustic parameter; and controlling acoustic output parameters of an acoustic system of the current site based on the optimized acoustic parameters. According to the method, the problem of adapting to dynamic changes of field acoustic characteristics is solved, a good acoustic effect can be obtained in various scenes and environments, and the sound quality of an acoustic system is improved.

The invention discloses a novel induction-type magneto-thermo-acoustic detection method for the conductivity of a supercapacitor, and relates to the technical field of nondestructive material detection.The method comprises the steps that a steady-state static magnetic field and a pulse alternating magnetic field are introduced to form a composite excitation field, and a magneto-acoustic effect and a thermo-acoustic effect are simultaneously and cooperatively excited in a solid-state electrode material; the magnetoacoustic-thermoacoustic coupling effect is formed, eddy current induced by a pulse alternating magnetic field in the material not only generates joule heat, but also generates a direct carrier of Lorentz force under the action of a steady-state static magnetic field, the two physical effects are derived from the same electromagnetic excitation process, but the mechanisms for generating acoustic signals are complementary to each other, so that the effect of the magnetoacoustic-thermoacoustic coupling is achieved. The two effects are coupled as a unified sound source item, a sound pressure wave equation is established, the equation describes a sound field excitation process under the combined action of a force source and a heat source, the coupling mechanism remarkably enhances the strength and information abundance of ultrasonic signals, and the inherent defect that a single thermoacoustic detection method is insensitive to a high-conductivity material is overcome.

The invention relates to the field of ultrasonic flaw detection, in particular to an ultrasonic nondestructive flaw detection system based on a photoacoustic effect, which comprises a photoacoustic excitation module used for emitting excitation laser to scan the surface of a detected object and inducing the photoacoustic effect to generate ultrasonic waves on the surface of the detected object through the excitation laser; the optical detection module comprises a detection laser and a four-quadrant detector, the detection laser is used for emitting detection laser, the detection laser is incident to a detection point on the surface of the detected object at a preset inclination angle, and the four-quadrant detector is used for receiving the detection laser reflected by the detection point; and the computer is connected with the four-quadrant detector, and is used for receiving the current signal output by the four-quadrant detector, calculating the light spot offset of the center of the detection light spot relative to the center of the four-quadrant detector, and calculating the internal damage position of the detected object by analyzing the time domain characteristic of the light spot offset. According to the invention, the defects of contact detection limitation and coherent light interference technology are overcome, the sensitivity and applicability are improved, and the cost is reduced.

The present disclosure relates to the technical field of audio control. Provided are a computer-implemented method for audio control, and an electronic device and a storage medium. The computer-implemented method for audio control comprises: on the basis of a specified measurement signal, performing acoustic effect testing on a target space, in order to obtain environmental response information, wherein the environmental response information comprises impulse response information and post-separation impulse response information; analyzing the environmental response information, in order to obtain acoustic characteristic information of the target space; on the basis of the acoustic characteristic information, performing compensation processing on audio to be processed, in order to obtain regulated audio; regulating gains of multiple channels corresponding to the regulated audio, in order to obtain re-regulated audio; and performing multi-channel collaborative optimization processing on the re-regulated audio, in order to obtain audio having a target effect. The method achieves precise compensation for spatial acoustic defects, resolves inter-channel crosstalk, improves the acoustic image localization and spatial perception, significantly improves the perceptual audio quality, and optimizes an output.

The embodiment of the invention relates to the display technology, in particular to display equipment. The display device comprises the display panel, the backlight assembly and the exciter, the exciter drives the display panel to vibrate and produce sound through the cavity between the backlight assembly and the display panel, the acoustic effect is good, and sound and picture integration is easy to achieve. Besides, the actuating piece of the exciter easily generates a large amount of heat due to reciprocating vibration, the exciter body and the actuating piece are connected through the damper, the heat generated by vibration of the actuating piece is transmitted to the exciter body for heat dissipation, in this way, heat generated by the actuating piece can be dissipated through the damper besides air, and the service life of the actuator is prolonged. The temperature of the actuating piece is reduced, the influence of local temperature on the image display quality is reduced, and the image display quality of the display equipment is improved.

The invention discloses a quantitative evaluation model and system for underwater sonar detection efficiency by mesoscale vortexes, and belongs to the technical field of marine acoustic detection. The method comprises the following steps: acquiring marine environment data; identifying vortex types (cold vortex / warm vortex / mixed vortex), positions, radiuses R and amplitudes A based on a velocity gradient method of optimized parameters and a deep learning model; utilizing an ROMS numerical mode to simulate a vortex three-dimensional thermohaline structure; generating a sound velocity disturbance coefficient in combination with a Wilson sound velocity model and the vortex amplitude A; calculating propagation loss PL (z) through a Bellhop sound field model; an acoustic detection efficiency index ADEI is constructed; and outputting the detection probability matrix. According to the method, the technical bottleneck that a traditional model cannot dynamically couple the vortex acoustic effect and the detection probability is solved, full-process automatic evaluation is realized, and a sonar deployment strategy is remarkably optimized.

The invention discloses a sound effect optimization method, system and equipment based on an adaptive algorithm, and relates to the technical field of stage sound equipment, and the method comprises the steps: obtaining stage three-dimensional sound field topological parameters, and constructing a reference sound field model through combining a preset sound equipment parameter table; obtaining audio source characteristic information, and generating a first optimized sound effect model according to the reference sound field model and the audio source characteristic information; generating a second optimized sound effect model through an acoustic compensation algorithm according to the reference sound field model and the first optimized sound effect model; based on the first sound effect optimization model and the second sound effect optimization model, triggering an adaptive regulation and control instruction, the adaptive regulation and control instruction comprising a sound field calibration instruction and a sound effect optimization instruction; the invention provides the stage sound equipment capable of dynamically optimizing the sound effect according to the site change.

The utility model discloses a lamp with a sound box. The lamp comprises a lampshade, a radiator, a light source, a loudspeaker and a rear sound cavity, the radiator is arranged in the lampshade, and the interior of the radiator is hollow; the plurality of light sources are arranged on the outer side of the radiator; the loudspeaker is arranged at one end of the radiator, and the loudspeaker is communicated with the interior of the radiator, so that the rear sound cavity is formed in the radiator. The light source is arranged on the outer side of the radiator, the interior of the radiator is hollow, the loudspeaker is arranged at one end of the radiator, the loudspeaker is communicated with the interior of the radiator, and the internal space of the radiator can serve as a rear sound cavity of the loudspeaker. The lamp has the sound playing function, meanwhile, the internal space of the radiator is effectively utilized, the radiator can play a role in radiating the light source and improving the acoustic effect, multiple purposes are achieved, the space in the lampshade is saved, and the cost can be saved.

The embodiment of the invention belongs to the technical field of display, and provides display equipment, the display equipment comprises a display panel, lamp panels and an exciter, the vibration output end of the exciter is connected with the splicing position of the lamp panels, vibration force can be transmitted to the lamp panels at the same time, and the vibration area is increased; and the exciter drives the display panel to vibrate and produce sound through the gas in the cavity between the lamp panel and the display panel, so that the acoustic effect is good, and sound and picture integration is easy to realize.

The invention provides a puncture guide wire with foresight detection and penetration functions and an intelligent intervention system, and belongs to the technical field of medical minimally invasive intervention instruments. The energy conversion assembly is innovatively integrated at the head end of the puncture guide wire, and the dual functions of A-type ultrasonic foresight detection and ablation are achieved through electric or optical path driving. The system supports two implementation modes: in an electroacoustic mode, a piezoelectric micro-electro-mechanical system is used for realizing ultrasonic transceiving and ablation; in the opto-acoustic mode, ultrasonic waves are generated by utilizing the opto-acoustic effect of the optical fiber, echoes are detected by utilizing optical interference, and ablation is performed by utilizing high-energy laser or ultrasonic waves. According to the invention, blood vessel, heart and occlusion lesions are identified based on a waveform fingerprint algorithm of time domain echoes, and a high-energy mode can be dynamically switched to assist in penetrating tissues. The problems that in an existing minimally invasive interventional operation, in-vitro image guiding precision is insufficient, a traditional IVUS / ICE catheter is too large in size and high in cost, and a traditional guide wire lacks active detection and auxiliary penetrating capacity when facing complex lesions are solved.

The utility model discloses an easily spliced wood-wool acoustic board for automotive trim, which comprises two board body components 1 and a board body component 2, the two board body components 1 are spliced together, the board body component 2 is spliced with one of the board body components 1, the board body component 1 comprises two side boards 1, a middle board 1 and two wall boards 1, and the two side boards 1 are spliced together. The two first side plates are connected to the two sides of the first middle plate in a clamped mode respectively, one ends of the two first wall plates are connected to one sides of the two first side plates in a clamped mode, and the second plate body assembly comprises a second middle plate, two second side plates and two second wall plates. The boards applied to the first board body assembly and the second board body assembly are wood-wool sound-absorbing boards, sound reflection and echoes can be effectively reduced, the acoustic effect of space is improved, the environment in a vehicle is quiet and comfortable, the performance of a sound system can be improved, noise and resonance are reduced, the overall sound quality is improved, meanwhile, the materials belong to environment-friendly materials, and the cost is low. The weight is light, too much burden cannot be added to the vehicle, and the device is suitable for various vehicle types.

The application discloses a KTV system rear surround setting method and device, a terminal and a medium. The method comprises the following steps: acquiring rear surround device static parameters, box environment data, box acoustic data and customer preference data; determining a target position of the rear surround device in the box based on the rear surround device static parameters, the box environment data and the box acoustic data; determining a target adjustment parameter combination corresponding to the rear surround device based on the rear surround device static parameters, the box acoustic data and the customer preference data; processing the rear surround device based on the target adjustment parameter combination, and placing the rear surround device at the target position. The application aims to achieve the optimal acoustic effect of the rear surround device of the KTV system in the box, and ensure that the acoustic effect of the rear surround device meets the preferences of customers in the box.

A performance analysis method is realized by a computer and includes acquiring a time series of input data representing played pitch that is played, inputting the acquired time series of input data into an estimation model that has learned a relationship between a plurality of items of training input data representing pitch and a plurality of items of training output data representing an acoustic effect to be added to sound having the pitch, and generating a time series of output data for controlling an acoustic effect to be added to sound having the played pitch represented by the acquired time series of input data.

1. Name of the Design Product: Pre - amplifier (EKX - 2A). 2. Use of the Design Product: Used to enhance the sound effect. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Three - dimensional view.

A stringed musical instrument includes: a musical instrument body configured such that a string is attached thereto; a pickup configured to: i) detect vibration of the string and ii) output a string vibration signal according to the vibration; a detection sensor that is: i) attached to the musical instrument body and ii) configured to output a detection signal according to a force applied to the musical instrument body; and a controller that is attached to the musical instrument body, and is configured to output, based on the detection signal, a control signal configured to control an operation of an effector configured to impart an effect to the string vibration signal.

The embodiment of the utility model relates to the display technology, in particular to display equipment. The display device comprises the display panel, the backlight assembly and the exciter, the exciter drives the display panel to vibrate and produce sound through the cavity between the backlight assembly and the display panel, the acoustic effect is good, and sound and picture integration is easy to achieve. The actuator of the exciter easily generates a large amount of heat due to reciprocating vibration, the damper is arranged to transfer the heat generated by vibration of the exciter to the side deviating from the vibration output end of the exciter, and a gap is formed between the damper and the backlight assembly; the heat generated by vibration of the exciter can be dissipated through air and also can be dissipated through the damper, so that the temperature of the actuating piece is reduced, the influence of local temperature on the image display quality is reduced, and the image display quality of the display equipment is improved.

The utility model discloses a kind of decompression telescopic data lines, traditional acoustic effect structure is centrally arranged at the top of turntable, so it needs to reserve space between the inner top wall of traditional shell and turntable, the utility model makes the inner top wall between turntable and shell no longer needs to reserve space by the way of accommodating groove cooperation moving piece, thereby reduce the thickness of finished product, effectively reduce the volume of finished product, become more portable.

The atmosphere lamp structure comprises an integrally-formed cavity and a bottom cover fixed to an opening of the cavity, a power supply and a control circuit board are arranged in the cavity, a circular through hole is formed in the middle of the top wall of the cavity, and a mounting support is fixed to the bottom face of the top wall of the cavity; a circular supporting column is arranged in the circular through hole, a light source plate connected with the control circuit board is fixed to the outer side of the circular supporting column, the outer side of the circular supporting column is sleeved with a lampshade, and the outer side of the lampshade is sleeved with a decorative outer cover. A decorative ring is fixed in the circular through hole through a screw, an abutting convex ring is arranged on the inner wall of the circular through hole, a sealing ring is arranged between the decorative ring and the abutting convex ring, and the inner ring surface of the sealing ring abuts against the outer surface of the decorative outer cover; and a sealing gasket layer is fixed at the joint of the cavity and the bottom cover. The loudspeaker is reasonable in structural arrangement, the sealing performance of the whole structure can be improved, and the loudspeaker and the gradually-changed horn mouth are matched, so that the quality and the sound effect of the whole sound are improved.

The invention relates to the technical field of thermoacoustic refrigeration, in particular to a thermoacoustic effect air conditioner and a cold supply system. The technical problems that a heat pump air conditioner needs to use a compressor and a refrigerant, energy consumption is high, and pollution to the environment is large are solved. To this end, the thermo-acoustic effect air conditioner of the present application comprises: a resonant tube; the thermo-acoustic engine comprises a first heat regenerator, and the two axial sides of the first heat regenerator comprise a hot end and a first room temperature end correspondingly; the heating device is used for establishing an initial temperature difference between the hot end and the first room temperature end, and the first heat regenerator generates sound waves under the action of the initial temperature difference and the thermoacoustic positive effect; the thermoacoustic refrigerator comprises a second heat regenerator, and the cold end of the second heat regenerator absorbs heat under the action of sound waves and the thermoacoustic reverse effect; and the internal heat exchange pipeline is connected with the cold end in a heat exchange manner, so that the temperature of a heat exchange medium at an outlet of the internal heat exchange pipeline is reduced to provide cooling capacity. Refrigeration can be achieved based on the thermoacoustic effect, and the low-temperature heat exchange medium is output to achieve continuous refrigeration.

The utility model discloses an independent cavity suspension structure of a sound equipment loudspeaker, which comprises a shell, a loudspeaker cavity, a loudspeaker hard cavity support and a soft cavity support, one surface of the loudspeaker cavity is fixedly assembled with the hard cavity support, the hard cavity support is arranged in the soft cavity support, the soft cavity support is fixedly assembled with the shell, and the shell is fixedly assembled with the loudspeaker cavity. The loudspeaker is installed in the loudspeaker cavity through the hard cavity support. And the other surface of the horn cavity is assembled and fixed with the shell through a flexible connecting piece, and a suspended flexible connection structure is formed between the horn cavity and the shell through the matching of the flexible connecting piece and the flexible cavity bracket. According to the utility model, the loudspeaker cavity is separated from the main body shell, and the loudspeaker cavity is flexibly connected with the shell through the elastic body, so that the loudspeaker cavity absorbs energy through the elastic body during vibration, vibration transmitted to the shell is reduced to the greatest extent, the vibration of the shell is reduced, the problem of vibration sound is effectively solved, and the acoustic effect of the sound equipment is improved.

A stringed musical instrument includes a musical instrument body configured such that a string is attached thereto. The musical instrument also includes a pickup configured to detect vibration of the string and output a string vibration signal according to the vibration. The musical instrument also includes a detection sensor that is attached to the musical instrument body and configured to output a detection signal according to a force applied to the musical instrument body. The musical instrument also includes a controller that is attached to the musical instrument body, and is configured to output, based on the detection signal, a control signal configured to control an operation of an effector configured to impart an effect to the string vibration signal.

Computer game sound effects (SFX) are provided to customers in a container that includes not only the audio files (such as .wav files) of the SFX, but also information underlying the SFX, so that the customer can change the SFX at runtime or offline without having to purchase new sounds or return to the sound provider to request that they make the desired changes.

To improve a user experience.SOLUTION: In a virtual space, a first area 51 and a second area 52 that are adjacent mutually are provided. An acoustic effect added to a voice in the virtual space is correlated with each of the first area 51 and the second area 52. A boundary sound source 65 that is a virtual sound source is disposed in a boundary between the first area 51 and the second area 52. An acoustic processing section adds an acoustic effect correlated with an area positioned on a side close to a virtual microphone 62 in a boundary sound source 65 in the first area 51 and the second area 52 to a boundary voice that is a voice of the boundary sound source 65 obtained by the virtual microphone 62 disposed in the virtual space. An acoustic output section allows a speaker to output the boundary voice to which an acoustic effect is added by the acoustic processing section.SELECTED DRAWING: Figure 2

The present invention relates to a photo-acoustic spectroscopy gas cell designed for the identification of gases. The system comprises a gas chamber for containing a gas sample and a light receiving portion that receives excitation light capable of inducing a photo-acoustic effect in the contained gas. A cantilever is mounted at / within the gas chamber. The cantilever is specifically adapted with resonance characteristics that enable it to resonate in response to the photo-acoustic excitation generated within the gas cell. A measurement unit within the system is configured to analyze the response of the cantilever to the photo-acoustic effect, thereby determining the identification of the gas based on this response. This invention provides a precise and reliable way for gas analysis and identification

This application provides a loudspeaker and an electronic device. The loudspeaker includes a housing; a vibration assembly including a diaphragm and a diaphragm drive coil connected to the diaphragm; a magnetic circuit assembly and a drive assembly. The magnetic circuit assembly has a gap, and the diaphragm drive coil is opposite to the gap. The magnetic circuit assembly drives the vibration assembly to vibrate in the receiving cavity, and the drive assembly drives the magnetic circuit assembly to vibrate with the vibration assembly, thereby improving the linearity of the vibration of the diaphragm drive coil and the acoustic effect of the loudspeaker.

The present invention belongs to the technical field of electroacoustics in electronics, and relates to an audio system formed by a speaker-enclosure planar array, and a preparation method for the audio system. Different from the prior art, the present invention uses a plurality of small / -micro-aperture speakers to form a special planar array audio device, such that by using the plurality of small- / micro-aperture speakers, audio signals with frequencies of 20-120 Hz or even higher, which are typically cut off in small-aperture speaker systems, are caused, by means of synchronous superposition operation, to output powerful, clear and pure bass sound waves. Moreover, an algorithm for a linear digital filter is used to perform frequency division and surround sound processing on digital audio signals of the speakers without generating a phase shift. Therefore, a series of functional defects in conventional large-aperture subwoofers are overcome, thereby enabling the planar-array audio system to achieve a surround sound effect in a three-dimensional or two-dimensional space.

A distributed acoustic sensing (DAS) system is configured to generate at least two respective light pulses, such as a first pulse and a second pulse, at each scan cycle, the pulses having equivalent (similar or identical) optical characteristics, and to generate at least two respective light pulses, such as a first pulse and a second pulse, by directing each of the at least two pulses through different optical fibers of different fiber lengths. A time delay is generated between the at least two pulses such that a time difference [Delta] t is formed between the at least two pulses. Each pulse generated may be directed through a sensing fiber of the DAS system, and one or more optical characteristics of (e.g., Rayleigh) backscattered light returned from the sensing fiber may be detected to determine one or more updated characteristics affecting acoustic waves of the sensing fiber for detecting acoustic effects such as mechanical strain, acoustic vibration, etc.