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163 results about "Microphone array" patented technology
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A microphone array is any number of microphones operating in tandem. Typically, an array is made up of omnidirectional microphones, directional microphones, or a mix of omnidirectional and directional microphones distributed about the perimeter of a space, linked to a computer that records and interprets the results into a coherent form. Arrays may also be formed using numbers of very closely spaced microphones. Given a fixed physical relationship in space between the different individual microphone transducer array elements, simultaneous DSP (digital signal processor) processing of the signals from each of the individual microphone array elements can create one or more "virtual" microphones. Different algorithms permit the creation of virtual microphones with extremely complex virtual polar patterns and even the possibility to steer the individual lobes of the virtual microphones patterns so as to home-in-on, or to reject, particular sources of sound. The application of these algorithms can produce varying levels of accuracy when calculating source level and location, and as such, care should be taken when deciding how the individual lobes of the virtual microphones are derived.
An infrared imaging furnace temperature detection device
This utility model relates to the field of industrial boiler temperature measurement technology, specifically disclosing an infrared imaging furnace temperature detection device, including a thermometer body, a display panel, and a microphone array module. The display panel is rotatably mounted on the top of the thermometer body via a hinge, and the microphone array module is fixedly mounted on the front of the display panel. The upper half of the protective frame is closed to prevent impacts from above, while the lower half is open for easy disassembly and assembly of the lens module. The air vent, through an air curtain, reduces dust and smoke contamination of the lens at the source. The cleaning scraper, made of polytetrafluoroethylene, driven by a micro-drive motor and other components, can scrape away dust and impurities from the lens surface without scratching it, ensuring lens cleanliness and guaranteeing imaging and temperature measurement accuracy. The protective frame, cleaning scraper, and other structures also optimize and protect key components such as the lens with IP65 dustproof and waterproof design from different angles, further enhancing the overall reliability and durability of the device.
Owner:NINGBO GUOKE MONITORING TECHNOLOGY CO LTD
A concrete thin plate disease identification method based on microphone array technology
The application provides a concrete slab disease identification method based on a microphone array technology, and relates to the technical field of nondestructive testing.The application converts a disease edge search problem into a discrimination problem of maximum phase difference of array symmetrical measuring points, has a simple calculation process, fast response speed, can quickly determine an optimal search direction of the disease edge, can directly provide a basis for travel control for a detection robot, realizes autonomous tracking and continuous identification of the disease edge, and provides core technical support for intelligent detection of the concrete slab disease.Compared with traditional amplitude and energy characteristics, the phase characteristic is less affected by environmental noise and detection distance fluctuation, has stronger characteristic stability, effectively solves the problems that the traditional algorithm is susceptible to environmental interference and the search direction accuracy is insufficient, and greatly improves the accuracy of disease edge identification.
Owner:CCCC INFRASTRUCTURE MAINTENANCE GRP CO LTD +1
Speech processing method, apparatus, device, storage medium, and program product
Embodiments of the present application provide a speech processing method, device, equipment, storage medium and program product, and relate to the field of audio and video. The method comprises: receiving a mixed speech signal from multiple speakers in a conference using an omnidirectional microphone array; collecting facial visual information of at least one speaker in the conference when speaking using a camera; obtaining a spatial time-frequency mask of each speaker according to a direction of arrival angle of each speaker relative to the microphone array; for each speaker in the at least one speaker, performing speech synthesis on the facial visual information of the speaker using a lip-reading model to obtain a visual time-frequency mask of the speaker; fusing the spatial time-frequency mask and the visual time-frequency mask of any speaker to form an audio-visual mask of the speaker; and applying the audio-visual mask of any speaker to the mixed speech signal to obtain an independent speech signal of the speaker. The method of the present application improves the accuracy of speech separation in a multi-speaker conference.
Owner:INDUSTRIAL AND COMMERCIAL BANK OF CHINA
Downhole temperature field reconstruction and thermal disaster early warning method and system based on acoustic tomography
A kind of well temperature field reconstruction and thermal disaster early warning method and system based on acoustic tomography, method: staggeredly arranging explosion-proof loudspeaker array and microphone array on the two sides of roadway in monitoring area;Utilize frequency division multiplexing technology to emit / receive multiple frequency band acoustic waves synchronously, form entity acoustic path data set, and construct overdetermined equation group;Adopt virtual sound line method, realize virtual path enhancement;Realize high-resolution temperature field reconstruction of roadway cross section temperature field in combination with sound velocity-temperature linear model;Continuous multiple frame temperature field images are input into TimesNet model, and multi-scale features are extracted by adaptive period decomposition and two-dimensional space-time convolution, and fire warning grade and abnormal area coordinates are output.The system: including explosion-proof loudspeaker array, microphone array, edge computing node and host computer;Edge computing node is connected with explosion-proof loudspeaker array and host computer respectively.The present application can realize global temperature perception and concealed fire early warning in target monitoring area.
Owner:HUAIBEI MINING CO LTD +2
A high-voltage cable terminal sound image detection device for a motor train unit
The utility model relates to railway vehicle detection technical field, concretely relates to a kind of EMU high-voltage cable terminal acoustic image detection device, including acoustic image acquisition unit and acoustic image analysis unit, both constitute data connection signal transmission, wherein the acoustic image acquisition unit includes microphone array, camera, the microphone array is used for the acoustic perception of high-voltage cable, the camera is used for the image perception of high-voltage cable;The microphone array includes the MEMS type sensor combination of several array elements, and the arrangement of several array elements MEMS type sensor uses the irregular sparse array based on multi-arm spiral array.The utility model has the advantages that: realize EMU high-voltage cable terminal partial discharge abnormal sound non-contact detection, accurately master EMU high-voltage cable use condition and life cycle, scientific guidance roof high-voltage cable overhaul and replacement, can effectively guarantee EMU operation safety and stability, substantially reduce EMU operation and maintenance cost expenditure.
Owner:INST OF SCI & TECH SHANGHAI RAILWAYBUREAU +1
Unmanned aerial vehicle sound source positioning method and system based on microphone array and artificial intelligence
Owner:XIHUA UNIV
A method for integrated detection of in-pipe acoustic modes considering abnormal gain of microphones
PendingCN122262970ASubsonic/sonic/ultrasonic wave measurementBiological modelsAviationData acquisition
The application relates to the technical field of aero-engine aerodynamic acoustic detection, and discloses a pipe-in-sound mode integrated detection method considering abnormal gain of a microphone, which comprises the following steps: a microphone array unit, a rotating speed detection unit and a signal acquisition module are built to realize data acquisition; a core algorithm unit is built, a joint sparse model is constructed based on a blade passing frequency calculated from rotating speed data, and super parameter adaptive updating is completed through an EM algorithm until the super parameter meets a convergence condition; a mode coefficient matrix and an abnormal gain matrix are extracted based on the converged super parameter, elements of the abnormal gain matrix are arranged in ascending order, and the position of an abnormal microphone is determined according to a preset threshold; subsequently, channel data corresponding to the abnormal microphone is removed, and the mode coefficient is re-inverted by using a Bayesian compressive sensing method; and a standardized detection report is output by the system. The method realizes high-precision mode recognition and abnormal detection, does not need manual intervention, and improves detection efficiency and robustness.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Vehicle sealing performance detection method and device, vehicle, storage medium and product
The application relates to a vehicle sealing performance detection method and device, a vehicle, a storage medium and a product. The method comprises the following steps: acquiring original acoustic signals collected by a main microphone array arranged in a to-be-detected area of a vehicle and reference noise signals collected by a reference microphone array arranged in a reference area of the vehicle; performing background noise filtering processing on the original acoustic signals based on the reference noise signals to obtain target acoustic signals; extracting target acoustic features corresponding to the target acoustic signals; determining a feature similarity between the target acoustic features and reference acoustic features corresponding to a current running state of the vehicle; and in a case where the feature similarity is smaller than a similarity threshold, determining a sealing performance detection result of the to-be-detected area according to the target acoustic features. The method can continuously and comprehensively detect the sealing performance of the vehicle during driving.
Owner:CHONGQING LANDIAN AUTOMOBILE TECHNOLOGY CO LTD
Waterproof sealing mechanism of microphone and electronic device
This application relates to a waterproof sealing mechanism for a microphone and an electronic device. Based on this application, a sound transmission channel can be formed between a sound-permeable hole in the device housing and a microphone mounted on a module substrate. Furthermore, a waterproof sound-permeable membrane and a sealing film are stacked and sealed between the module substrate and the device housing. The waterproof sound-permeable membrane is horizontally placed within the sound transmission channel, and the sound-permeable holes of the sealing film seal and surround the sound transmission channel penetrating the waterproof sound-permeable membrane between the substrate's pickup hole and the sound-permeable hole, thereby achieving a waterproof seal for the sound transmission channel. Additionally, the sealing film also forms a sealed partition around the outer periphery of the waterproof sound-permeable membrane between the device housing and the module substrate, achieving a secondary waterproof seal for the sound transmission channel. This improves the impact of the sound-permeable hole on the sealing performance of the device housing. Furthermore, if a microphone array containing multiple microphones is used, the sealing consistency of the multiple sound-permeable holes can also be ensured.
Owner:HANGZHOU HIKVISION DIGITAL TECHNOLOGY CO LTD
A gas leakage identification and positioning method and system suitable for mobile monitoring
The application discloses a kind of gas leakage identification positioning method and system suitable for mobile monitoring, belong to deep learning technical field.The method includes: through the microphone array on robot real-time acquisition sound signal on inspection path, input time attention module and frequency domain space attention module, obtain frequency domain space feature sequence after frequency domain space attention enhancement and time feature sequence after time attention enhancement, fusion obtains latent space feature;Based on latent space feature, multi-task gas leakage monitoring is carried out, and prediction classification result, distance prediction value and angle prediction value of gas leakage source are obtained;Effectively capture dynamic acoustic change related to robot position movement, improve identification and positioning accuracy.
Owner:HUAZHONG UNIV OF SCI & TECH
A motorcycle off-line voice interaction system and method thereof
This invention discloses an offline voice interaction system and method for motorcycles, belonging to the field of voice interaction technology. The invention aims to solve the technical problems of low recognition rate and lack of driving safety control in existing motorcycle voice systems under high-speed wind noise environments. Its technical solution includes: synchronously acquiring microphone array audio signals and CAN bus vehicle driving status data; dynamically loading a high-noise robust simplified instruction library or a full-function instruction library based on the real-time environmental signal-to-noise ratio to adapt to different riding scenarios; using a safety interlock decision module to match voice operation intentions with physical states such as vehicle speed and tilt angle in a permission mapping table, intercepting high-risk instructions or triggering secondary confirmation; and adaptively adjusting the gain and speech rate of the feedback voice based on the environmental signal-to-noise ratio. This invention can achieve highly reliable voice interaction across the entire speed range while ensuring riding safety.
Owner:ZHEJIANG QIANJIANG MOTORCYCLE
A three-arm space robot multi-modal shared teleoperation system and method
The application discloses a three-arm space robot multi-modal shared teleoperation system and method, which comprises at least a master teleoperation system, a communication module and a slave robot system, the master teleoperation system comprises at least two force feedback hand controllers, a microphone array and upper computer software, and the slave robot system comprises two end work arms equipped with grippers, an observation arm with a double-eye camera at the end, a vision unit, a force sensor and lower computer software; an operator controls two work arms of the extravehicular robot to perform a task, and controls the observation arm to obtain a better local visual angle; the method fuses the multi-modal teleoperation control method comprising pose control, voice control and force control with the robot autonomous control through a shared control algorithm, can realize the position, posture and contact force of the robot controlled by the operator and the robot autonomously performing other relatively simple tasks according to the demand of the operator, reduces the operation burden of the operator and improves the control efficiency.
Owner:SOUTHEAST UNIV
An all-pass filter-based sound source orientation method, device, equipment and medium
The application discloses a sound source orientation method and device based on an all-pass filter, equipment and a medium, and relates to the technical field of computers. The method comprises the following steps: recording a sound source based on a linear microphone array to obtain multi-channel recording data, performing first generalized cross-correlation operation on a wideband excitation signal and the multi-channel recording data, performing slicing and second generalized cross-correlation operation on the obtained first cross-correlation result, determining an initial delay value by using a quadratic function fitting method, and judging whether the absolute value of the initial delay value is greater than a preset threshold. If yes, the multi-channel sliced data is up-sampled, the signal delay relationship of each adjacent channel is modeled by using a Thiran all-pass filter, the target delay value of each adjacent channel is determined based on the obtained linear equation and by using a least square method, and the sound source incidence angle is determined by using the target parameters of the linear microphone array. The method breaks through the constraint of the Rayleigh limit and performs high-precision delay estimation, so that the accuracy of sound source orientation is ensured.
Owner:MALANSHAN AUDIO & VIDEO LABORATORY
Vehicle noise reduction method, device, equipment, system and storage medium
The application provides a vehicle noise reduction method, device, equipment, system and storage medium, and relates to the technical field of vehicles.The method comprises the following steps: acquiring noise signals of a vehicle engine collected by each microphone in a vector microphone array, wherein the vector microphone array comprises at least two microphones, and the microphones are arranged on the side of the vehicle engine; performing beamforming on the noise signals collected by each microphone respectively to obtain beamformed signals; performing noise reduction processing on the beamformed signals to obtain noise reduction signals, and outputting the noise reduction signals in the vehicle; and wherein the noise reduction signals are opposite in phase to noise signals propagating to the vehicle. The technical scheme provided by the application can reduce the engine noise in the vehicle.
Owner:IFLYTEK CO LTD
Acoustic detection multi-channel microphone array cooperative control method
The application discloses an acoustic detection multi-channel microphone array cooperative control method, relates to the technical field of audio processing, and solves the technical problem of low positioning accuracy caused by the asynchronization among the microphones in the existing multi-channel microphone positioning method; the method comprises the following steps: obtaining test data corresponding to a microphone array; grouping each microphone in the microphone array according to the test data to obtain a plurality of positioning subarrays; obtaining positioning detection data corresponding to each positioning subarray; inputting each sound signal in the positioning detection data into a sound positioning model to obtain positioning information corresponding to the positioning subarray; sequentially obtaining the positioning information corresponding to each positioning subarray, fusing each positioning information to obtain a final positioning point, and ensuring that each positioning subarray is not affected by the sampling time deviation among the microphones during positioning, thereby ensuring the positioning accuracy of the microphone matrix.
Owner:ZHUHAI XINRUNDA ELECTRONICS CO LTD
A multi-source localization method combining adaptive spatial grid refinement and sparse reconstruction
PendingCN122085215APosition fixationComplex mathematical operationsSound source locationSound sources
This invention proposes a multi-source localization method combining adaptive spatial grid refinement and sparse reconstruction. It is a parameterized localization method based on physical sound propagation models and array signal processing theory. The method uses a microphone array to collect sound signals, constructs an array guidance model, and combines sparse reconstruction and continuous parameter optimization to estimate the sound source location. The steps include: Step 1: Array signal acquisition and preprocessing; Step 2: Constructing a coarse-resolution spatial grid and guidance dictionary; Step 3: Selecting candidate sound source locations using a sparse algorithm, and performing coarse multi-source localization based on sparse reconstruction; Step 4: Adaptively refining the local spatial grid; Step 5: Performing multi-parameter joint optimization in continuous space through nonlinear least-squares optimization of position and amplitude for fine localization; Step 6: Outputting the multi-source localization results. This invention is applicable to sound source spatial location estimation under planar microphone array conditions.
Owner:FUZHOU UNIV
Medical voice interaction intelligent name card
This invention provides a medical voice-interactive smart badge, including a badge body for wearing on medical personnel; a battery module, located within the badge body, for powering various modules; the invention utilizes a bone conduction vibration sensor and an inertial measurement unit attached to the chest for low-power initial trigger detection, waking up the microphone array and positioning module only when the medical personnel are detected speaking or moving, avoiding continuous high-power operation and extending the badge's battery life; simultaneously, it identifies the current dialogue scenario by collecting environmental audio, location information, and posture data after wake-up, and uses corresponding activation conditions to determine the scenario, switching the badge from standby to working state only during actual medical-related dialogue, thus solving the problem of accidental triggering in non-medical scenarios and eliminating the need for manual button operation by medical personnel, achieving hands-free and scenario-adaptive intelligent activation.
Owner:固原市人民医院
A microphone array speech noise reduction method and system for a video conference room
PendingCN122266388ADirection finders using ultrasonic/sonic/infrasonic wavesSpeech analysisTime domainDynamic noise
The application relates to the technical field of voice noise reduction, in particular to a microphone array voice noise reduction method and system for a video conference room, which comprises the following steps: acquiring a multi-channel frequency domain observation vector containing a main speaker voice and a burst interference, and performing an algebraic left multiplication operation on the multi-channel frequency domain observation vector by using a main speaker direction space suppression matrix to separate out a multi-channel residual vector after suppression; independently determining the update weight of each frequency point in a cross-verification manner of spatial and frequency domain characteristics; driving a bottom layer dynamic noise covariance matrix to perform a weighted recursive replacement with a frequency point by frequency point and independent step length. A beam space filtering weight vector is solved by using the updated covariance matrix, and then a time domain voice after noise reduction is reconstructed. The application aims to improve the voice purity of a video conference room in a complex acoustic environment.
Owner:湖北君宇实业有限公司
A method for improving voice conference call quality
The application discloses a method for improving voice conference call quality, relates to the technical field of computer voice processing, and comprises the following steps: using an Escape-TDNN model, adopting diversity samples and double noise reduction technology; using a multi-index fusion algorithm, providing personalized audio services, using adaptive beam forming technology and Wiener filtering algorithm, adopting a human voice separation model, combining with a voiceprint recognition result for post-processing optimization, using natural language processing technology, combining with migration learning technology, using voice synthesis and post-processing technology, fusing microphone array space information and video visual features, combining with environmental prior information, introducing an attention mechanism, and supporting online update of the human voice separation model. The application separates background sound by using an algorithm, isolates noise, makes voice clear, introduces text-to-speech, copes with situations where voice cannot be emitted or a microphone fails, accurately identifies and separates human voice by means of voiceprint technology, improves recognition and purity, and enhances audio effect.
Owner:AVIC HUADONG OPTOELECTRONICS (SHANGHAI) CO LTD
A method and apparatus for 6DOF rendering
An apparatus, comprising at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: obtain a listener position; obtain at least two microphone array positions, each of the at least two microphone array positions associated with a respective microphone array configured to capture audio signals representing an audio scene; determine a use for at least two immersive streams from the at least two microphone arrays, the use determined based on the at least two microphone array positions and the listener position; determine a bitrate for the at least two immersive streams from the at least two microphone arrays based on the use; and control an encoding of the at least two immersive streams based on the audio signals and the determined bitrate.
Owner:NOKIA TECHNOLOGIES OY
Speech separation method and apparatus, system, device, storage medium, and program product
A speech separation method and apparatus, a system, a device, a storage medium, and a program product. The method comprises: acquiring a speech signal from a target vehicle, wherein the speech signal is collected by a microphone array mounted on the target vehicle (110); extracting a speech feature and a directional feature of the speech signal, wherein both the speech feature and the directional feature are independent of the configuration of the microphone array (120); and performing speech separation on the basis of the speech feature and the directional feature so as to obtain a speech separation result corresponding to the speech signal (130). The complete isolation of sound in the vehicle can be realized without depending on the configuration information of the microphone array, so as to provide a guarantee for the independent interaction of speech zones, thereby avoiding the problem, in conventional solutions, that speech separation in vehicles relying on a separation model obtained by training configuration information, leading to "one-model-per-vehicle" limitation. The speech separation is performed on the basis of the configuration-independent features , which improves the large-scale delivery efficiency of the system, reduces costs, and reduces the waste of resources.
Owner:IFLYTEK CO LTD
A sound detection method
The application discloses a sound detection method and relates to the technical field of measuring electric variables; the method comprises the following steps: S1, audio signals are segmented by using a sliding wake-up time window, and multi-channel root mean square values are calculated; when the multi-channel root mean square values are greater than a preset wake-up threshold, it is determined that wake-up is triggered; S2, the audio signals are segmented by using a sliding interaction time window to obtain audio segments of each channel; each audio segment is further divided to obtain multiple equal-length sub-segments; single-channel root mean square values are calculated; when the single-channel root mean square values are greater than an activation threshold, it is determined that valid signals exist in the sub-segments; the wake-up detection in step S1 and the formation of a lightweight signal processing method in step S2 take into account real-time performance and deployment cost, and the efficiency of recognizing touch sequences based on a microphone array is improved; in step S2, the multiple equal-length sub-segments are further divided, the single-channel root mean square values of the sub-segments are compared with the activation threshold, and the recognition accuracy is improved.
Owner:SUZHOU ACOUSTIC IND TECH RES INST CO LTD
Method and apparatus for receiving speech from a speaker outside a vehicle
A method and apparatus for receiving voice from a speaker outside a vehicle are disclosed. The method for receiving voice according to embodiments of this disclosure includes: determining location information of the speaker outside the vehicle based on an image captured by a camera when an external call mode for receiving voice from a speaker outside the vehicle is activated; opening a window of the vehicle, taking noise into account, based on the degree of opening and closing; and controlling beamforming of the voice received by a microphone array based on the determined location information of the speaker.
Owner:HYUNDAI MOTOR CO LTD +1
A pickup method of a microphone array, an electronic device, and a storage medium
The application discloses a microphone array sound pickup method, electronic equipment and computer readable storage medium. The sound pickup method comprises the following steps: fixed beam forming is performed on a voice signal received by a microphone array, and a beam forming direction of the microphone array is pointed to an estimated expected direction of arrival; blocking processing is performed on the processed voice signal, so that the voice signal from the expected direction of arrival is blocked, and only the voice signal from a non-expected direction of arrival is reserved; the processed signal is used as a reference signal, a first filter is used to filter out the signal from the non-expected direction of arrival and reserve the signal from the expected direction of arrival; and an update factor of the first filter is calculated according to the following formula (I), wherein the update factor of the first filter of the mth microphone channel is SNR f,d (ω, l) is Y f,d (ω, l) is a signal-to-noise ratio of Y f,d (ω, l) is a delay signal obtained by delaying the signal processed in the step S1, SNR m (ω, l) is a signal U m (ω, l) is a signal-to-noise ratio of Y. The application further improves voice quality.
Owner:COLSONIC SUZHOU ELECTRONICS CO LTD
Battery pack detection method, detection device, electronic equipment and storage medium
This invention relates to the field of energy storage technology, and provides a method, device, electronic equipment, and storage medium for detecting battery packs. The invention includes: pre-pressurizing the battery pack under test and acquiring multi-channel acoustic signals from the pressurized battery pack using a microphone array; performing noise reduction processing on the multi-channel acoustic signals to obtain target acoustic signals; determining the signal characteristics of each detection location on the battery pack under test based on the target acoustic signals, and matching the signal characteristics of each detection location with a pre-stored leakage feature library to obtain the leakage situation corresponding to each detection location; and visually presenting the leakage situation corresponding to each detection location based on a visible light image of the battery pack under test. This addresses the shortcomings of existing battery pack airtight leakage detection methods in identifying minute leaks, spatially locating leak points, and providing intuitive traceability of detection results.
Owner:JINKO SOLAR CO LTD +1
Speech enhancement method and device based on double microphone array, equipment and medium
The specification provides a speech enhancement method based on a dual microphone array, the method comprising: acquiring surrounding acoustic signals collected by two microphones in a microphone array respectively. Based on the acoustic signals collected by the two microphones respectively, coherence information between the two microphones is determined. Based on the coherence information, a speech activity state is judged, and in the case that the speech activity state is a speech missing state, a noise covariance matrix of the spatial filter is updated; and a gain function value of the post-filter is determined based on the coherence information. The two collected acoustic signals are subjected to beamforming processing by the spatial filter to obtain acoustic signals of at least one beam direction. The acoustic signals of any beam direction are subjected to filtering processing by the post-filter to obtain an estimation result of a speech component contained in the acoustic signals of the any beam direction.
Owner:ZHEJIANG GEELY HLDG GRP CO LTD +1
Audio processing methods, devices, chips, module equipment and storage media
This application discloses an audio processing method, apparatus, chip, module device, and storage medium. The method includes: acquiring dual-channel audio collected by a dual-microphone array; processing the dual-channel audio to obtain the amplitude attenuation coefficient of each frame signal in a first frequency point set; for each frame signal, determining the weighted average of the amplitude attenuation coefficients at each frequency point in the first frequency point set as the single-frame amplitude attenuation coefficient of each frame signal; for each frame signal, performing amplitude attenuation processing on each frequency point in a second frequency point set based on the single-frame amplitude attenuation coefficient of each frame signal to obtain the attenuated signal of each frame of the dual-channel audio; and performing beamforming and inverse Fourier transform based on the attenuated signal of each frame of the dual-channel audio to obtain the enhanced dual-channel audio. This method can uniformly attenuate the signal across the entire spectrum using a single-frame amplitude attenuation coefficient, thereby reducing audio signal distortion.
Owner:UNISOC CHONGQING TECH CO LTD
An electronic pet behavior triggering method based on sound perception
The application discloses a sound perception-based electronic pet behavior triggering method, and relates to the technical field of intelligent interaction.The method comprises the following steps: collecting environmental sound signals through a microphone array and constructing a sound feature vector, determining sound intensity levels, sound source directions, and user voice classes, environmental event sound classes, and third-party biological sound classes; analyzing different sound classes to obtain user instruction intentions, user emotion labels, and sound event types; dynamically updating in combination with current emotion parameters and energy parameters of the electronic pet; generating priority behavior instructions based on the above information and sending the priority behavior instructions to an action execution module; and monitoring the short-term energy of the electronic pet in real time during the execution process and performing self-noise control.The technical problems of single sound processing, rigid state updating, serious self-noise interference, and lack of continuity of behavior response in the life state of the existing electronic pet are solved.
Owner:BEIJING AH LATIN INTERNATIONAL CULTURAL DEVELOPMENT CO LTD
A motor bearing diagnosis model training method, device and equipment and storage medium
A method, apparatus, device, and storage medium for training a motor bearing diagnostic model include: acquiring noisy signal samples based on a microphone array; performing directional signal enhancement on the noisy signal samples in the direction of the target device using delayed summation beamforming to obtain enhanced signal samples; performing Mel-spectrum signal conversion on the enhanced signal samples to obtain Mel-spectrum features; extracting bearing fault features from the Mel-spectrum features using image temporal dual-channel features; performing fault classification prediction on the bearing fault features to obtain predicted diagnostic results; determining the prediction loss based on the diagnostic prediction results and the actual diagnostic results; and iteratively optimizing the initial motor bearing diagnostic model based on the prediction loss to obtain a fully trained motor bearing diagnostic model. This application uses delayed summation beamforming to perform directional enhancement on the samples, reducing and preserving noise interference, improving the model's adaptability to environmental noise, and meeting the diagnostic needs of production environments.
Owner:HUBEI ENERGY GRP EZHOU POWER GENERATION CO LTD
Area pickup method, device, equipment and readable storage medium
Embodiments of the present application provide a region pickup method, device, equipment and readable storage medium. An electronic device uses each microphone in a microphone array to pick up sound, and obtains a microphone signal of each microphone. The microphone signal is a noisy and reverberant signal. Then, the electronic device determines a complex spectrum of each microphone signal, inputs the complex spectrum into a region pickup model to obtain a weight of each complex spectrum, and estimates a target signal in a target pickup region according to the complex spectrum of each microphone and the weight of each complex spectrum. With this scheme, the electronic device uses the region pickup model to determine the weight of the complex spectrum of each microphone signal. The weight is used to retain the target signal in the target pickup region, suppress the reverberation effect, shield the noise of the target space and the interfering human voice outside the target pickup region, so that the estimated target signal is closer to the actual target signal, and then the remote participant can hear the accurate voice signal, thereby achieving the purpose of improving the quality of the remote conference.
Owner:GUANGZHOU SHIYUAN ELECTRONICS CO LTD +1