76 results about "Acoustic processing" patented technology

The invention discloses an open architecture system for an underwater acoustic signal processor, and belongs to the technical field of underwater acoustic signal processors. The system comprises a hardware resource pool, a standardized algorithm container group, a visual processing link construction module, a containerized deployment and scheduling platform and a data processing and communication plane. According to the system, special hardware resources are pooled, an underwater sound processing algorithm is packaged into a standardized container, a user is allowed to arrange a processing flow in a graphical mode, an intelligent scheduling platform dynamically deploys the algorithm container to matched hardware for execution according to real-time resource conditions, and meanwhile, an efficient and reliable data communication channel is provided. According to the method, the problems that a traditional system is closed, poor in expansibility and low in resource utilization rate are solved, elastic sharing of hardware resources, agile deployment of an algorithm and flexible construction of a flow are achieved, and openness, flexibility and overall efficiency of an underwater acoustic signal processing system are remarkably improved.

The invention provides an impedance combined type broadband silencer based on a sound wave black hole gradient structure and a design method, and belongs to the technical field of noise control and environmental protection engineering, the whole impedance combined type broadband silencer is of an axisymmetric cylindrical structure, and the impedance combined type broadband silencer is composed of an inlet and outlet channel and a middle-section expanding type acoustic processing area; the expanded acoustic processing area comprises an inlet and outlet side expansion cavity, a composite impedance gradient perforation section and a porous sound absorption material layer. According to the sound wave black hole type multi-stage perforated ring structure, the sound wave black hole type multi-stage perforated ring structure composed of an axial uniform-parameter perforated ring belt and a radial gradient perforated ring belt is sequentially constructed in the silencer, so that the thickness of a perforated ring and the aperture and the perforation rate of the perforated ring belt are arranged on a propagation path according to a parameter gradient rule; porous materials are filled among the annular bands to form a gradient impedance composite dissipation system, so that sound waves are sequentially subjected to focusing and dissipation caused by geometric gradual shrinkage and viscosity and heat dissipation of porous media in the propagation process, and low-frequency enhanced absorption and wide-frequency-band continuous sound absorption are achieved.

The invention provides a low-noise mounting device and a noise reduction structure design method thereof, and relates to the technical field of aviation noise control. The design method of the noise reduction structure of the low-noise installation device comprises the steps of obtaining unsteady pressure pulsation data of the surface of a calculation model; wherein the calculation model has main body structure characteristics of the low-noise mounting device; obtaining the maximum position of the unsteady pressure pulsation amplitude on the surface of the calculation model according to the unsteady pressure pulsation data, and dividing a plurality of acoustic processing areas by taking the maximum position as the center in an outward expansion manner; calculating each acoustic processing area to obtain a corresponding target frequency; the acoustic impedance matching structure is selected according to the target frequency, so that acoustic structures with specific frequency characteristics can be designed for different acoustic processing areas, accurate control over multi-band noise by the mounting device is achieved, and the effect noise of machine body mounting is facilitated. Especially, the ideal noise reduction effect is achieved on the installation effect noise of the open type rotor engine.

Furniture such as desks and other items are provided with sound absorbing features consisting of micro-perforations extending through structures having vertical surfaces. The micro-perforations are formed using a LASER cutting tool or a punch and are either cylindrical or frustoconical. The micro-perforations are formed in drawer facings, doors, support structures, and free-standing objects and storage devices having vertical surfaces. The micro-perforations have diameters in the range of 0.20 to 0.70 mm. The micro-perforations have been found to increase sound absorption of a desk by as much as 4 Sabins within the frequency range of 100 to 5,000 Hz. Structural panels consisting of front and rear micro-perforated panels surrounding a porous central core may be employed in such furniture.

The invention discloses a tomography and targeted energy thermal therapy system and method based on an acousto-optic coupling functional film layer, and relates to the technical field of noninvasive medical diagnosis and treatment. The system comprises an intelligent processing carrier, an acousto-optic coupling function film layer, a scanning mechanism, an energy treatment module and a processing and temperature control module. The intelligent processing carrier at least comprises a 20Hz-20kHz audio unit, a pickup unit, an optical signal unit and a processor; the acousto-optic coupling functional film layer is of a single physical structure and is inseparable, acoustic frequency conversion focusing imaging and targeted warm delivery at 42-47 DEG C are achieved in the same physical area in a time-sharing mode, the acoustic processing layer achieves 1000-8000 frequency doubling through a multi-stage resonance microcavity array, and the echo signal-to-noise ratio is larger than or equal to 15 dB; the scanning mechanism comprises a plurality of modes such as rotation, translation, multi-device array, human body movement, local limb movement, human body bearing support device movement and the like; the energy forms cover all types of light, electromagnetism, radio frequency and the like capable of generating a warm effect, including but not limited to non-contact or contact energy delivery modes. The traditional Chinese medicine composition is suitable for tumors, infections, inflammations, and all lesions sensitive to temperature of 42-47 DEG C including nervous system lesions such as amyotrophic lateral sclerosis, Alzheimer's disease, Parkinson's disease, multiple sclerosis and the like, is low in cost, free of radiation and easy to popularize, and has extremely high creativity and practical value.

An acoustic aural development system. A medical device is worn by an infant while the infant is in a neonatal intensive care unit (NICU) and is in communication with an acoustic processing station. The device and station protect the child's hearing by active acoustic filtering, while, at the same time, provides aural stimulation for development. Acoustic filtering is done at the acoustic processing station to reduce power and electronics required by the wearable medical device.

A method for optimizing acoustic performance in listening spaces addresses limitations in room acoustics for music production and reproduction. The method comprises two optimization steps: a multi-objective room optimization method applicable to any room shape and a multi-objective treatment optimization method that iteratively searches a library of potential acoustical treatments to determine optimal solutions for each accessible area. The method utilizes a multi-objective search engine to simultaneously optimize several critical acoustic metrics, including low-frequency response, spatial variation around listening positions, early reflections, modal temporal decay, and mid-to-high-frequency reverberation time. The integration of both optimization methods provides comprehensive acoustic control across the entire audible spectrum.

The present disclosure relates to an acoustic processing device that can suppress the occurrence of excessive atmospheric pressure changes in the eardrums of a user. Provided is an acoustic processing device comprising: a driver unit having a diaphragm; and a housing in which the driver unit is housed. The diaphragm has a vent hole that communicates a first space on a first surface side of the driver unit in the housing and a second space on a second surface side on the reverse side of the first surface. The present disclosure can be applied to, for example, an earphone device.

The invention is suitable for the technical field of acoustic processing, and provides a voice propagation method capable of absorbing and reflecting, used equipment comprises a panel installed in a recording studio, the panel is provided with a plurality of conversion grooves arranged in a rectangular array, and the conversion grooves are internally provided with conversion assemblies capable of converting between a sound absorption mode and a reflection mode. A driving assembly for controlling the conversion assemblies to operate is arranged on the outer side of the panel, and the operation steps include S1, when pure'dry sound 'needs to be recorded in the recording studio, the driving assembly is started, the driving assembly drives the conversion assemblies in all the conversion grooves to operate, and the conversion assemblies are converted into sound absorption modes, and S2, when mixed sound needs to be recorded, the driving assembly is started, and the driving assembly drives the conversion assemblies in all the conversion grooves to operate. According to the sound processing method, the static state is converted into the dynamic state, one-key switching of acoustic scenes is achieved, and seamless conversion between the sound absorption mode and the reflection mode can be achieved in the same physical space according to actual requirements.

The embodiment of the application relates to the technical field of robot control, and particularly relates to a robot multi-cavity sound production device.The device comprises a control module and at least one sound production module; the control module comprises a processor and a signal driver; the sound production module comprises a vibration module and an acoustic cavity in communication with the vibration module; the sound production module is in communication connection with the signal driver of the control module through a cable or a wireless communication module, the vibration module is arranged to be driven by the control module to generate an initial sound wave, the acoustic cavity is arranged to acoustically process the initial sound wave, and when the sound production module is multiple, the multiple sound production modules are arranged at different positions of a head, a neck or a trunk of a robot body respectively.The device can simulate the spatial listening of human sound production and the sound characteristics of the common sound production of multiple positions, enhances the authenticity of robot sound production, makes the robot output have natural human voice characteristics, enhances the immersion and naturalness of human-computer interaction, and improves the interaction experience.

To provide an edge and the like that improve sound quality. The edge includes an edge-shaped portion that is formed from an inner peripheral portion to an outer peripheral portion, and a groove portion that is formed in the edge-shaped portion and has a peak portion and a valley portion, wherein a ridge line of the valley portion of the groove portion extends from a start point on the inner peripheral portion side to an end point on the outer peripheral portion side so as to draw a continuously changing curve.

This application discloses a noise control method and a near-ear open-back audio device, relating to the field of acoustic processing technology. The noise control method is applied to a near-ear open-back audio device, which includes at least two first microphones. The noise control method includes: acquiring ambient noise signals collected by each first microphone; performing noise pattern recognition based on the ambient noise signals to obtain a target noise pattern; performing noise localization based on the ambient noise signals to obtain a target noise direction; selecting a target noise reduction controller from a plurality of preset noise reduction controllers that corresponds to the target noise pattern and target noise direction; and performing active noise control based on the target noise reduction controller. This application provides a solution for applying active noise control in a near-ear open-back audio device and improving the noise control effect.

To maintain volume heard by a user constant, even when the user of a spot-sound-reproduction chair moves his / her head. To this end, a sound emission device according to the disclosed technology emits sound such that only an area in the immediate vicinity of the user becomes an audible region, the sound emission device including a speaker sound-reproduction unit, a sensor signal acquisition unit, and an acoustic processing unit. The speaker sound-reproduction unit makes a first speaker and a second speaker emit acoustic signals that are approximately opposite in phase to each other. The sensor signal acquisition unit acquires movement of at least part of the head of the user. The acoustic processing unit determines a gain of acoustic signals emitted from the first speaker and the second speaker on the basis of the movement. Here, acoustic signals emitted from the first speaker and acoustic signals emitted from the second speaker make up one audible region for the user.

The invention provides a speech synthesis method, a speech synthesis model and electronic equipment. The method comprises the following steps: acquiring speech synthesis data; processing the speech synthesis data to obtain a sequence unit; adjusting the index value of the sequence unit to obtain an adjusted sequence unit; the adjusted index values of the original text sequence unit and the reference text sequence unit are in an index range of a text matrix block of a unified embedding layer, and the adjusted index value of the reference audio sequence unit is in an index range of an audio matrix block of the unified embedding layer; inputting the adjusted sequence units into a unified embedding layer for feature embedding processing to obtain embedding vectors of the sequence units; and performing acoustic processing on the embedded vector to obtain a target audio sequence unit corresponding to the original text. According to the technical scheme, the uniform embedding layer of the speech synthesis model is used for carrying out feature embedding on the sequence units of different modes at the same time, and the bottleneck of multi-mode speech synthesis in the aspects of calculation efficiency and memory efficiency is solved.

The application provides a low-delay streaming voice interaction system with a breaking processing function, and relates to the technical field of artificial intelligence.The application carries out necessary preprocessing and acoustic feature extraction through a real-time acoustic processing module, and uses robustness enhancement technology to resist distortion and complex environmental noise introduced by an interaction channel.A streaming acoustic decoding module carries out acoustic modeling, language model application and decoding in real time and in parallel, and outputs an ultralow-delay text transcription result stream.The real-time acoustic processing module is responsible for high-precision and ultralow-delay detection of user voice activity, especially user voice activity during AI playback of voice, to determine the real-time voice activity state of the user.The system uses an efficient and low-delay bidirectional streaming network transmission mode between modules and between the system and a communication platform, so that audio streams, acoustic feature streams, text streams and control signals can be transmitted and processed in real time with extremely low end-to-end delay.

The application provides a low-noise mounting device and a noise reduction structure design method thereof, and relates to the technical field of aviation noise control. The low-noise mounting device noise reduction structure design method comprises the following steps: obtaining unsteady pressure fluctuation data of a calculation model surface; wherein the calculation model has the main structure characteristics of the low-noise mounting device; obtaining the maximum unsteady pressure fluctuation amplitude position of the calculation model surface according to the unsteady pressure fluctuation data, and expanding and dividing multiple acoustic processing areas from the maximum position as the center; calculating each acoustic processing area to obtain the corresponding target frequency; and selecting an acoustic impedance matching structure according to the target frequency, so that the acoustic structure with specific frequency characteristics can be designed for different acoustic processing areas, thereby realizing the precise control of the mounting device on multi-frequency noise, and further helping to achieve the ideal noise reduction effect on the body mounting effect noise, especially the mounting effect noise of the open rotor engine.

An acoustic treatment for use in an acoustic treatment for a gas turbine engine includes a sheath having a plurality of perforations. A plurality of cell structures extends from the sheath such that the sheath and the cell structures are a monolithic component. The plurality of perforations of the sheath are formed by filaments of a first material that define a first dimension of the perforations having a linear edge and filaments of a second material crossing the filaments of the first material that define a second dimension of the perforations having a linear edge. Such perforations have a non-cylindrical shape defined by the linear edges of the filaments of the first material and the filaments of the second material. A gas turbine engine is also disclosed.

The invention provides a voice processing method and system, the system comprises an initial voice processing link composed of a plurality of voice processing modules, and the method comprises the steps: obtaining a to-be-processed audio signal, and extracting multi-modal feature information for representing a current acoustic scene based on the audio signal; determining an acoustic processing mode corresponding to the current acoustic scene based on the multi-modal feature information; adjusting the start-stop state and / or processing parameters of a voice processing module in the initial voice processing link based on the acoustic processing mode to obtain a target voice processing link; and performing voice enhancement processing on the audio signal by using the target voice processing link to obtain an enhanced voice signal. According to the invention, flexible speech enhancement processing for different acoustic scenes can be realized.

A first electronic device used by a first user can determine whether a second electronic device that is being used by a second user is located within a threshold distance of the first electronic device. The first electronic device may be presenting a first extended reality (XR) environment to the first user and the second electronic device may be presenting a second XR environment to the second user. The first electronic device, in response to the second electronic device being located within the threshold distance, can perform acoustics processing for nearby spatial audio. For example, the first electronic device can play a voice of the second user with a sound adjustment. Other aspects are also described and claimed.

The application discloses a kind of active and passive collaborative near-field stealth sound field system and implementation method, belong to acoustic privacy, mobile terminal and vehicle-mounted acoustic technical field.This system takes mobile terminal, mobile terminal protective shell and vehicle-mounted cabin as carrier, realizes frequency band convergence and sound energy attenuation to wideband human voice by passive acoustic processing module, cooperates active acoustic processing module to carry out anti-phase interference cancellation to narrowband signal, and eliminates structural vibration, gap leakage sound and reverberation by residual energy dissipation module, forms stable near-field stealth sound field around user mouth.System is automatically triggered according to communication state, only suppresses human voice to spread outward, does not interfere with normal pickup microphone, so that human voice attenuates to below ambient noise in preset distance and cannot be identified.The application has good universality, stable privacy protection effect, low power consumption, easy to integrate, can be adapted to terminal built-in, vehicle-mounted cabin, protective shell peripheral form, etc., and can also be applied to wearable audio and video equipment and other scenes.

The invention discloses an adaptive beam forming method and device, a storage medium and a computer program product, and relates to the technical field of acoustic processing, and the method comprises the steps: obtaining a microphone array signal; a neural network model is adopted to predict based on the microphone array signals, first masks corresponding to the time frequency units are obtained, and the larger the first masks are, the larger the probability that signals of the corresponding time frequency units in the microphone array signals belong to noise signals is; calculating a noise covariance matrix corresponding to the time frequency unit according to the first mask corresponding to the time frequency unit and a first complex vector corresponding to the time frequency unit in the microphone array signal; and calculating a filter coefficient of an adaptive beam forming filter according to the noise covariance matrix corresponding to each time frequency unit, and performing beam forming processing on the microphone array signal according to the filter coefficient. According to the invention, the estimation accuracy of the noise covariance matrix is improved, and the filtering effect of the adaptive beam forming filter on the noise is improved.

The invention relates to a conference pod designed for private meetings, phone calls, or video conferences. The pod features a structural enclosure with a ceiling, walls, and a floor, including a door for access. A key aspect is the height-adjustable shielding plate mounted on a designated wall, which supports a desk top surface. This configuration allows ergonomic adjustment of the working position for the user, enhancing comfort and safety by preventing access to potentially hazardous components. The pod may include acoustic treatment for soundproofing, a ventilation system for air quality, and integrated lighting and electrical connections for convenience. The shielding plate can also support a computer display, ensuring optimal viewing angles. This design offers flexibility, safety, and enhanced functionality for users in a compact, enclosed space.

The invention discloses an automatic zooming reflection type coaxial light path multi-mode coal quality detection system and method, and belongs to the technical field of coal quality detection. The implementation method comprises the following steps: 1, detecting the distance from the second laser displacement sensor to the center of the surface of a sample; 2, detecting the distance from the first laser displacement sensor to the center of the small mirror; 3, focusing of laser on the surface of the sample is realized; 4, generating plasma; 5, coupling the optical signal to an optical fiber; 6, transmitting the spectral data to a spectral data processor, and transmitting the acoustic spectral data to an acoustic processor; 7, preprocessing the spectrum and extracting sound spectrum characteristic parameters; 8, forming a multi-modal data set; 9, inputting the data set into the model to obtain coal quality parameters; 10, focusing the laser on the surface of the sample in real time; compared with the prior art, the technical problems of light path pollution caused by industrial field dust, light path deviation caused by vibration, laser defocusing caused by coal flow surface fluctuation and vibration and insufficient robustness of a single spectrum model are solved.

The invention discloses a heterogeneous resource management method for a containerized platform of an underwater acoustic signal processor, and belongs to the technical field of the containerized platform of the underwater acoustic signal processor, and the method comprises the steps: constructing a unified capability representation resource pool, and quantifying the hardware architecture of a heterogeneous calculation unit and the performance of an underwater acoustic reference algorithm; analyzing an underwater sound task to generate an acoustic processing logic diagram containing nodes and dependency relationships; according to the algorithm type and real-time constraint of each node in the graph, matching mapping is carried out by combining the performance of the resource pool and the load state, and a task-is generated; a resource mapping scheme; instantiating the processing container, connecting the container according to a data flow through a software defined network, configuring storage, and forming a distributed computing pipeline; and during operation, monitoring performance and triggering dynamic rescheduling and reconstruction. According to the method, fine scheduling of heterogeneous resources, intelligent deployment of task assembly lines and adaptive optimization are realized, and the underwater acoustic signal processing efficiency, the real-time guarantee and the resource utilization rate are improved.

To stably estimate a speech position for each speech production.SOLUTION: A speech position estimation part estimates a speech position for each frame of a prescribed period on the basis of a spatial spectrum of a sound source analyzed from an acoustic signal of a plurality of channels, a speech information acquiring part acquires speech section information indicating a speech section in which speech is produced on the basis of the acoustic signal of at least one of the plurality of channels, a speech position processing part identifies an every position speech section in which the speech position is estimated in the speech section, and determines the speech position on the basis of the amount of the every position speech position.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of automobile noise control, and provides an automobile windowing noise reduction control method and system based on working condition self-adaption and application, and the method comprises the steps that when it is detected that an automobile meets active noise reduction conditions, multi-dimensional working condition data are synchronously collected; based on the multi-dimensional working condition data, the current driving working condition is determined through a wind noise-working condition prediction model, and airflow control parameters and acoustic control parameters are obtained through calculation; according to the airflow control parameters, an intelligent flow deflector array arranged on the upper edge of the vehicle window is driven to act to the target angle; meanwhile, according to the acoustic control parameters, sound signals inside and outside the vehicle are collected, and corresponding offset sound waves and optimized sound signals are output after acoustic processing; and when it is detected that the vehicle meets the maintenance condition, the intelligent flow deflector array is controlled to reset, and self-cleaning operation is executed on the intelligent flow deflector array. According to the invention, a dual noise reduction mechanism of active diversion and acoustic offset is adopted, the noise reduction effect is greatly improved, selective sound scene management can be realized, and the driving and riding comfort is improved.

The invention discloses an efficient sound increasing type bamboo flute and a manufacturing process thereof. The process comprises the four steps of flute pipe pretreatment and resonance optimization, sound hole acoustic processing, composite acoustic coating forming and sound wave guiding calibration. In the whistle pipe pretreatment stage, microwave-low-frequency sound wave composite treatment is adopted to regulate and control the moisture content of raw materials and activate acoustic performance, and meanwhile, a multi-stage resonance structure is processed; sound hole machining is based on an acoustic model, and high-precision numerical control machining is combined with ultrasonic polishing and laser cladding strengthening; the composite acoustic coating adopts a three-layer structure of bottom layer permeation, middle layer compounding and surface layer adaptation; and finally, through initial adjustment, fine adjustment and temperature and humidity-vibration composite stability testing in a standard acoustic environment, acoustic performance is ensured to reach the standard. According to the technology, the volume and sound wave propagation efficiency of the bamboo flute can be remarkably improved, meanwhile, intonation stability and structural durability are guaranteed, and the technology is suitable for batch production of bamboo flutes with different adjustments and has the advantages of being standard in technology, high in controllability and excellent in product acoustic performance.

An acoustic processing device mountable on a vehicle, the acoustic processing device includes: a memory; and a processor coupled to the memory, and when executing a program stored in the memory, performs operations. The operations include: outputting a noise level obtained by subtracting a sound source level from a microphone level; outputting a velocity noise level indicating a frequency characteristic of a noise based on a velocity of the vehicle; outputting a volume sound source level; outputting an SN ratio which is a ratio between the volume sound source level and the velocity noise level; selecting based on the SN ratio, the estimated noise level candidates including a level related to the noise level and the velocity noise level; and outputting a selected one of the estimated noise level candidates as an estimated noise level.

The invention discloses a far-field pickup and interference suppression system based on structure and acoustics collaborative optimization, and the system comprises a sound guide structure assembly, a noise isolation assembly, a microphone array, an acoustics processing module, a system control unit, and a structure-acoustics collaborative module. The sound guide structure assembly is integrated on the equipment body and is used for guiding sound waves in a target direction to the microphone array; the noise isolation assembly is arranged between the microphone array and the equipment shell and is used for attenuating structure propagation vibration; and the acoustic processing module is used for carrying out beam forming, noise suppression and echo cancellation processing on audio signals collected by the microphone array. The beneficial effects of the invention are that integrated design is carried out from a physical structure to a processing algorithm, and structural parameters are introduced to an acoustic processing link; dynamic adaptation and joint optimization of hardware characteristics and a software algorithm are realized, so that the quality and robustness of far-field speech capture are fundamentally improved.

The application discloses a kind of acoustic treatment devices of gantry crane in wind tunnel test anechoic chamber in the technical field of wind tunnel test anechoic treatment, including gantry crane acoustic treatment module, specifically is: leg processing module, leg beam processing module, top beam processing module, supplementary structure processing module and acoustic processing unit, based on the characteristics of each module is processed by targeted anechoic treatment.This application carries out accurate partition processing by aiming at the distribution and characteristics of gantry crane noise source, hoisting mechanism and other core high-noise areas are customized by high windward surface sub-module Package, the glass wool and other efficient sound-absorbing materials filled in the interior can convert sound energy into heat energy and dissipate;Complex structure is seamlessly covered, forming closed or semi-closed sound-absorbing cavity, increase the reflection and absorption times of sound wave on the propagation path, from the source and the propagation path, double tube, build sound-absorbing barrier, thereby reduce the radiation intensity of overall noise.