69 results about "Acoustic effect" patented technology

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 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 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 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 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.

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.

Provide a system. 【Solution means】 Means for collecting information on competitive events, Means for analyzing the structure of space based on the viewer's interest data and the situation of the event, Means for automatically generating space in a virtual environment based on the analysis results, Means for analyzing the opinions of viewers during the event and dynamically adjusting the staging of space, Means for proposing an optimal virtual environment based on the user's past viewing data and preferences, Means for automatically adjusting visual and acoustic effects by utilizing a generative AI model using prompt sentences, Means for providing the user with an experience of an individually configured virtual stadium through a smart device, A system including the above.

The present invention pertains to the enhancement of grand pianos with integrated video and audio features, all while preserving the piano's meticulously perfected mechanics and acoustics and its timeless and elegant appearance.

A filter is provided that can amplify and extend the bass frequency response of a speaker in an audio device. The filter can be space-efficient. The filter can be part of a device that does not necessarily have a large rear cavity and does not necessarily have ports and / or passive radiation. The low-frequency extension filter can, for example, be used with a smaller rear cavity while essentially simulating the acoustic effects of a much larger rear cavity. The low-frequency extension filter can include multiple acoustic paths, such as tubes, which can be wound along a tortuous path and can resemble a labyrinthine design. The tubes can be selected to resonate with a specific predetermined low-frequency channel. For example, these tubes can be approximately a quarter wavelength of the center of the corresponding frequency channel, or even slightly shorter.

1. Name of the design product: main body of acoustic board. 2. Use of the design product: for sound absorption and / or sound insulation to improve acoustic effect. 3. Design points of the design product: in shape. 4. Picture or photo best indicating the design points: design 1 perspective view. 5. Design 1 is designated as the basic design. 6. Other circumstances needing explanation: the part represented by the dotted line in the figure is not the part claimed by the design; the dashed line represents the boundary between the claimed part and other parts, which does not constitute part of the design; the reference figure is the overall or partial photo of the specific example of the design product.

The invention discloses a headphone and an ear muff structure thereof, and relates to the technical field of earphones. Each ear muff structure comprises an ear muff cover, a flexible ear muff shell and a flexible ear muff lining, one side of the ear muff cover forms an installation area used for being connected with the head beam, and one side, deviating from the installation area, of the ear muff cover forms a connection area and a containing area; the flexible earmuff shell is positioned on one side, deviating from the mounting area, of the earmuff cover; the flexible ear muff shell continuously extends from the outer ring end to the inner ring end to form an arc-shaped structure which is bent in the direction away from the ear muff cover, the outer ring end is connected with the connecting area, the inner ring end is arranged towards the containing area, the inner ring end and the containing area are distributed at intervals, and a main containing cavity is defined by the inner ring end and the containing area; the flexible earmuff lining is arranged on the side, facing the containing area, of the flexible earmuff shell, an auxiliary containing cavity communicated with the main containing cavity is defined by the flexible earmuff lining, the connecting area and the containing area, and the earmuff lining is provided with a breathable sound absorption structure capable of absorbing sound waves. According to the invention, not only can the wearing comfort be improved, but also the acoustic effect of the headphone can be improved.

The invention provides a controller, which can enable a sound device expanded in space to reach the ear of an operator from a sound generating part of a shell held and operated by a hand. The upper surface (11) of the housing (10) of a controller (1) used in video game and VR operation is provided with a main sound-generating unit (20), and the lower surface (12) is provided with a sub sound-generating unit (25). Effective sound reaches the ears of the operator from the main sound-generating unit (20) in the shortest time, and the effect sound reaches the operator from the sub-sound-generating unit (25) with a time difference. By generating a difference in transfer function between the sound emitted from the main sound-emitting unit (20) and the sound emitted from the sub-sound-emitting unit (25), a sound effect with a sense of expansion in space can be obtained.

The application discloses a system for passive terminal communication, and belongs to the technical field of laser communication. The system comprises an optical-acoustic communication relay node module and a plurality of passive photoacoustic terminal modules. The optical-acoustic communication relay node module comprises a multi-channel encoder unit, an encoded laser unit, a listening laser unit, a beam control and tracking emission unit, a photoelectric detector unit and a decoding and communication exchange processing unit. The passive photoacoustic terminal module is composed of an optical-acoustic effect material. The application realizes bidirectional optical-acoustic communication between a plurality of passive terminals through the optical-acoustic communication relay node module. The application realizes networked, multi-user and real-time bidirectional communication between passive terminals while maintaining the advantages of no power supply and simple structure, solves the problems of multi-user access and relay forwarding in point-to-point optical-acoustic communication, and can be applied to the fields of non-electric environment, strong electromagnetic interference and secret communication.

The invention discloses a multi-mode fire early warning method and system, and relates to the technical field of industrial storage area fire early warning, the system collects temperature field distribution, particulate matter concentration and frequency spectrum signal data in real time by arranging a thermal infrared imager, a smoke sensor and an acoustic array microphone; performing time sequence frame difference and multi-frame mean filtering, calculating a thermal anomaly index and triggering smoke effect identification; adopting a sliding window difference and multi-point mean variance algorithm to extract smoke abnormal characteristics and trigger acoustic effect identification; based on the frequency spectrum signal, acoustic abnormal features are extracted, and cross-modal fusion judgment is triggered; and fusing the multi-modal abnormal indexes, calculating a fire comprehensive judgment index, and generating a corresponding early warning strategy according to a preset threshold value. According to the invention, efficient, accurate and real-time monitoring and response of the fire risk of the storage area are realized, the timeliness and reliability of fire early warning are improved, and a remarkable safety guarantee effect is achieved.

The utility model relates to a preceding-stage effector, belongs to the technical field of sound effect processing devices, and particularly relates to a preceding-stage effector capable of switching functions, which comprises a shell, a front panel is fixed on one side of the shell, and a mounting plate is arranged in the shell; according to the utility model, through the cooperation among the audio input interface, the audio output interface, the signal detection module, the mode switching module, the audio processing module and the microprocessor, audio processing parameters and functions can be automatically adjusted according to different use scenes, and through a built-in intelligent identification system and a preset mode, the audio processing parameters and functions can be automatically adjusted. The type of an input signal can be automatically detected, a corresponding mode is switched, and optimal sound effect processing is provided; through the arrangement of the mounting assembly, the movement of the mounting plate is conveniently controlled, so that when maintenance and cleaning are needed, the mounting plate is pulled out to be exposed outside, and the operation is convenient; the problems that an existing preceding-stage effector cannot conduct function switching and is inconvenient to clean and overhaul are solved.

This invention belongs to the field of indoor acoustic effects technology and discloses a sound reflector structure for indoor ceilings and its installation method. The sound reflector structure includes: a frame; a top plate; a spherical panel, with a first overlapping edge and a second overlapping edge forming an overlapping seam; the surface of the spherical panel has a water ripple texture to reflect and diffuse incoming sound waves; and a first filler material to fill the overlapping seam so that the spherical panel and the top plate fit together to enclose the frame; the spherical panel, the top plate, and the first filler material are all made of GRG material. This invention improves the sound field strength and reduces low-frequency absorption by designing the sound reflector with a unique water ripple texture and a specific curved surface calculated acoustically, and by using GRG material with superior acoustic performance. This improves the reverberation time and surround sound effect in the auditorium, achieving a balance between early and late reflections, thus realizing a purely natural sound environment.

A sealing unit (100) designed to connect to an edge of a rear window (12) of a vehicle. The sealing unit (100) comprises a body (102) with a front part (110), a middle part (120), and a rear part (130). The front part (110), the middle part (120), and the rear part (130) each have front tops (112, 122, 132) and front bottoms (114, 124, 134). The middle top (122) of the middle part (120) has a flat profile, and the rear top (132) of the rear part (130) has a convex profile. The middle top (122) of the middle part (120) transitions gradually and smoothly into the rear top (132) of the rear part (130). The flat-convex lip profile of the sealing unit (100) meets the packaging requirements, i.e., it fulfills the aero-acoustic effect without affecting the packaging and water management.

The invention discloses a full-automatic vehicle-mounted sound system with an environment sensing function. The full-automatic vehicle-mounted sound system comprises an environment sensing module, an audio processing module, a sound output module and a central control module, the environment sensing module is composed of a sound sensor, a light sensor and a temperature sensor and can accurately collect environment information inside and outside a vehicle. The audio processing module adaptively adjusts and optimizes an input audio signal according to the collected information, and comprises an audio equalizer, a volume controller and a sound effect processor. The sound output module is composed of a plurality of high-performance loudspeakers and can provide an all-around high-quality sound effect. The central control module analyzes and processes environmental data in real time by using advanced algorithms and models, and coordinates the operation of each module as a whole, thereby achieving full-automatic intelligent control. In addition, the vehicle-mounted sound system is also provided with an interface for communicating with external equipment. According to the invention, the sound effect can be automatically regulated and controlled according to the driving environment of the vehicle, comfortable and personalized hearing enjoyment is provided for a user, and the driving safety and interestingness are enhanced.

The technical problem to be solved by the present invention is to generate sound through intuitive operation. A sound generation device (100) is provided, comprising: a first region (R1) configured with an operating element for receiving an operation to generate a rhythmic tone signal; a second region (R2) configured with an operating element for receiving an operation to generate a melody tone signal; and a third region (R3) configured with an operating element for receiving an operation to impart an acoustic effect to a synthesized sound signal obtained by combining the rhythmic tone signal and the melody tone signal. The first region (R1), the second region (R2), and the third region (R3) are independent of each other.

A kind of floating construction floor structure for sound insulation and vibration reduction of machine room equipment, the floating construction floor structure includes concrete floor structure layer, sound insulation and vibration reduction layer, waterproof structure layer, floating construction layer in turn from bottom to top distribution, the periphery of concrete floor structure layer is built with surrounding edge structure to form with vibration reduction floating construction installation area, the inner side of surrounding edge structure is pasted with frame isolation strip, sound insulation and vibration reduction layer is fixed in the vibration reduction floating construction installation area above concrete floor structure layer, waterproof structure layer is fixed above sound insulation and vibration reduction layer, floating construction layer is fixed above waterproof structure layer.The utility model can separate sound insulation and vibration reduction layer from building main body by installing frame isolation strip on one side of surrounding edge structure, so that floating construction floor structure plays the maximum acoustic effect, the lower part of floating construction layer is laid with sound insulation and vibration reduction layer, waterproof structure layer layer, can effectively improve the function of concrete structure floor sound insulation, waterproof, dustproof, effectively reduce the vibration frequency generated when equipment runs.

This invention proposes a combined audio system, including at least one dynamic baffle speaker; at least one phase-guided speaker; an audio power amplifier; and a speaker switcher, whose input is connected to the output of the audio power amplifier, its first output is connected to the dynamic baffle speaker, and its second output is connected to the phase-guided speaker. The speaker switcher generates a control signal to switch between three operating modes: first mode: only the dynamic baffle speaker is activated, simulating a concert hall sound effect; second mode: only the phase-guided speaker is activated, simulating a dance hall sound effect; third mode: both the dynamic baffle speaker and the phase-guided speaker are activated simultaneously, simulating a stadium sound effect. This invention uses a combination of dynamic baffle and phase-guided speakers, controlled by a speaker switcher, to simulate the sound effects of a concert hall, dance hall, and stadium, meeting users' multi-scene sound needs.

The application discloses a premixing noise reduction burner of a combustor and a combustor with the same, and relates to the technical field of combustors.The premixing noise reduction burner comprises a shell, a flow divider, a gas pipeline and an air pipeline, the flow divider is arranged in a containing space and defines a first premixing chamber, the flow divider and the inner wall of the shell jointly define a second premixing chamber, and the cross-sectional area of the flow divider gradually decreases from the middle of the flow divider to the two ends of the flow divider.Thus, by configuring the flow divider in the form of gradually decreasing cross-sectional area from the middle of the flow divider to the two ends of the flow divider, a larger sound absorption area can be provided by the flow divider, the sound absorption effect of the premixing noise reduction burner can be enhanced, the noise can be reduced, the acoustic effect can be improved, the use experience of the combustor can be improved, and the emission of nitrogen oxides can be reduced and the environmental pollution can be reduced by separating the first premixing chamber and the second premixing chamber of the premixing noise reduction burner.

The utility model belongs to loudspeaker technical field discloses a kind of loudspeaker and electronic equipment, and loudspeaker includes shell and sounding unit, and the shell wall of shell is provided with first sound outlet;Sounding unit is equipped with second sound outlet, and second sound outlet is communicated with first sound outlet;Sounding unit includes fixed assembly, at least one diaphragm, at least one first polarity structure and at least one second polarity structure;Fixed assembly is installed in shell, and diaphragm is conductive structure, and diaphragm is correspondingly arranged with first polarity structure, and diaphragm is connected between fixed assembly and corresponding first polarity structure, and first polarity structure and second polarity structure are alternately arranged along first direction, and second polarity structure is equipped on both sides of first polarity structure;When one of first polarity structure and second polarity structure includes electrode layer, the other of both includes electret layer.The loudspeaker and electronic equipment provided by the utility model have good acoustic effect and long service life.

A kind of exhibition stand device, including exhibition stand and acoustic device with active noise reduction function, the inside of exhibition stand is equipped with the circuit board assembly connected acoustic device, circuit board assembly includes multiple function switches, and multiple interactive keys corresponding to multiple function switches are provided on exhibition stand;Interactive key is used to trigger corresponding function switch under the action of external force exerted by user, to control acoustic device;Multiple interactive keys include first key and multiple second keys, first key allows user to control acoustic device to execute and pause active noise reduction function, and second key allows user to control acoustic device to execute other functions.Under the premise that the basic operation demand of user to acoustic device is satisfied based on second key, through the first key set, user can control acoustic device to execute and pause active noise reduction function, so that by comparing the acoustic effect of acoustic device before and after active noise reduction, the experience effect of user to the active noise reduction performance of acoustic device can be effectively improved.

The invention provides a support assembly, a vehicle glass assembly and a vehicle, and relates to the technical field of automobile spare parts, the support assembly comprises a support body and a sound production module, the support body comprises a substrate, a fixed seat arranged back to vehicle glass and a bonding surface arranged facing the vehicle glass, the fixed seat is arranged on the substrate and is provided with a first connecting part, and the bonding surface is provided with a second connecting part; the sound production module is connected to the first connecting part. The sound production module can be integrated to the support body, space resources near the windshield are fully utilized, occupation of other areas in the automobile is avoided, the sound effect is improved, it is ensured that the original functions of the support body and the automobile driving sight are not affected, and the driving safety of the automobile is improved. The space utilization efficiency of the support body is improved, and the layout and performance of the vehicle-mounted sound system are optimized.

This invention relates to a sound insulation optimization method based on a polyurethane foam electro-driven acoustic package, comprising the following steps: S1, determining the sound insulation layer material. S2, optimizing the sound insulation performance in the mid-to-low frequency range. The chemical reaction ratio of polyether polyol and isocyanate is adjusted to change the internal skeletal structure of the polyurethane foam and control the Young's modulus of the polyurethane, thereby altering the natural frequency of the structure composed of "motor metal shell - polyurethane foam material - sound insulation layer material" and improving acoustic performance. S3, optimizing the sound insulation performance in the mid-to-high frequency range. For the polyurethane foam material, the optimal air permeability is determined using both sound absorption and sound insulation evaluation methods. Based on the principle of prioritizing sound insulation while considering sound absorption, the air permeability is determined. This serves as the basis for determining the foam stabilizer content in the formulation system, altering the elasticity of the pore walls during cell formation, thereby controlling the foam's density and achieving optimal air permeability, thus improving the mid-to-high frequency acoustic effect.

The present application relates to a method and system for creating a viewing atmosphere in a car cabin based on artificial intelligence, the method comprising: automatically analyzing the selected viewing content of the user using an AI content recognition analysis module; according to the content recognition result, an AI generation module generates a corresponding atmosphere rendering mode for all screens and light systems in the cabin, including but not limited to: lightning simulation under the scene of thunder and lightning, atmosphere light changes in horror scenes, soft light adjustment under romantic scenes; the AI sound effect control module intelligently adjusts the sound effect according to the type and scene of the film, synchronizes with the atmosphere rendering mode, and provides an immersive auditory experience; the user feedback module collects the physiological and behavioral data of the user in real time, and dynamically adjusts the atmosphere rendering mode. The present application can utilize artificial intelligence technology to realize the atmosphere rendering of the multi-screen and light system in the car cabin synchronized with the viewing content, and provide personalized and immersive viewing experience for the user.