42 results about "Multi resolution analysis" patented technology

The invention relates to a hyperspectral classification method and system based on wavelet spatial spectrum Mamba, and belongs to the technical field of hyperspectral image processing and deep learning. According to the method, a hyperspectral image cube is used as input, an image is divided into overlapped 3D small blocks, spatial and spectral characteristic decomposition is carried out on each small block at the same time, multi-resolution analysis is carried out on reconstructed characteristics by using classical Haar wavelets, long-range dependence is captured through a Mama network of a state space model, and finally the image is input into a classifier for classification. The method effectively balances the relationship between the network model performance and the calculation complexity, has the multi-scale feature extraction capability and the global modeling capability at the same time, can reduce the calculation resource consumption while remarkably improving the classification precision, and has excellent robustness and generalization capability.

The invention belongs to the technical field of motor health assessment analysis, and particularly relates to a method and instrument for assessing the health state of a new energy automobile motor, and the method comprises the following steps: collecting and synchronizing a multi-mode motor signal, and generating a trigger event according to the change of the motor signal; constructing a four-dimensional tensor data set, fusing the motor signal data through a graph neural network, and extracting cross-domain fault features based on the motor signal data; multi-resolution analysis is carried out on the cross-domain fault signals by using improved wavelet packet decomposition, and hidden harmonic waves and transient impact are identified; cross-domain fault features are extracted through edge computing nodes, a federated learning framework is adopted to aggregate multi-device data to train a global diagnosis model, and a fault classification method under a dynamic working condition is adopted; and fault types based on a global diagnosis model and a dynamic working condition. According to the invention, multi-source synchronization of data can be realized under the condition of evaluating the health state of the motor, the limitation of single-mode data is broken through, and the health evaluation precision of the motor is improved.

The present invention discloses a fluorescence image deconvolution method based on a multi-scale basis. Starting from the perspective of multi-resolution analysis, the present invention first designs a regularization term based on the characteristics of biological fluorescence images, which have distinct geometric shapes and rich information, and constructs a corresponding deconvolution algorithm, which has better noise reduction and deconvolution capabilities. Furthermore, for time series images, the present invention uses a deconvolution method that first deconvolutes the time domain, then the spatial domain, and then the time domain. Instead of pursuing a one-time noise reduction, the method performs noise reduction and deblurring in steps based on the characteristics of different wavelet bases, achieving both strong noise reduction and better resolution preservation. Furthermore, the present invention utilizes three-dimensional wavelets to fully utilize the three-dimensional continuous information of the sample sequence, combining the advantages and disadvantages of three-dimensional separable transforms and non-separable transforms to design a more optimized noise reduction process.

The invention discloses an I-Nodal node instrument battery pack aging test method, which combines relaxation time distribution (DRT) and multi-resolution analysis (MRA) technologies, performs multi-time scale separation on electrochemical impedance spectroscopy (EIS) data of a node instrument battery pack, and constructs an equivalent circuit model (ECM) with strong physical interpretability and unique structure. And high-precision online estimation of the SOC is realized based on an optimization algorithm and extended Kalman filtering (EKF). Meanwhile, SOC and DRT high-order features are combined and input into a machine learning model, and collaborative prediction of SOH is achieved. According to the method, the false peak occurrence rate is lower than 3%, the SOC estimation error does not exceed + / -1.5%, the SOH prediction RMSE does not exceed 0.015, high precision and high robustness are kept under the complex working conditions of low temperature, high temperature, dynamic load and the like, and the method is suitable for an unattended node instrument energy management system running for a long period.

The invention relates to the technical field of underwater acoustic signal processing, in particular to an underwater acoustic echo noise reduction method based on a wavelet convolution U-Net network. According to the underwater acoustic echo noise reduction method provided by the invention, the underwater acoustic echo can be subjected to noise reduction more efficiently and accurately; an existing technical scheme is not flexible enough to process frequency characteristics of underwater acoustic echoes. The wavelet convolution and reattention mechanism endows the model with multi-resolution analysis capability, can better adapt to the time-varying characteristics of the underwater acoustic echo at different frequencies, and can more meticulously analyze the underwater acoustic echo at different frequencies and time scales. The U-Net architecture is excellent in performance in the aspect of dense prediction tasks, and the method combines U-Net with wavelet convolution. Compared with a traditional underwater acoustic echo method based on a single structure, the scheme provided by the invention provides a more effective means for extracting and fusing features at different levels, and useful information in underwater acoustic echoes can be better mined.

The invention discloses a real-time energy storage adjusting and monitoring method and system, and relates to the technical field of power grid monitoring, and the method comprises the steps: collecting a power grid load power signal and an energy storage system output power signal, and calculating the difference between the two signals as a net load fluctuation signal; dividing the component into a high-frequency fluctuation component, an intermediate-frequency adjustment component and a low-frequency trend component through a multi-resolution analysis method; generating a second-level power compensation instruction according to the high-frequency fluctuation component, controlling the energy storage system to rapidly charge and discharge so as to suppress power grid frequency deviation, and outputting a frequency stabilization effect; generating a minute-level optimal charging and discharging power instruction by combining the medium-frequency adjusting component with a state of charge (SOC) and a state of health (SOH) provided by a battery management system of the energy storage system; based on the low-frequency trend component and an electricity price curve obtained by an electricity market, combined with a battery aging cost function, executing hour-level energy management; a lightweight health assessment model is deployed on an edge computing platform based on acquired voltage, current, temperature and internal resistance data.

The invention relates to the technical field of data fusion, and particularly provides a multi-scale eco-hydrological parameter joint inversion method and system based on unmanned aerial vehicle and satellite-ground data fusion, and the method comprises the steps: obtaining multispectral, hyperspectral and thermal infrared data of a research region through a high-resolution sensor carried by an unmanned aerial vehicle; the method comprises the following steps: acquiring unmanned aerial vehicle data, acquiring satellite remote sensing data, performing radiation correction on the unmanned aerial vehicle data and the satellite data, and performing feature extraction and space-time fusion on the unmanned aerial vehicle data and the satellite data by using a deep learning algorithm to generate high-resolution fusion data; through a multi-resolution analysis or spatial interpolation technology, coordinating differences of unmanned aerial vehicle data and satellite data in space and time scales, and constructing a multi-scale data set; based on a physical model and a data driving model, combined with fusion data, an inversion result is visually displayed, and the method has the effects of meeting the hydrological monitoring requirement of high time resolution, and particularly providing real-time monitoring data in the hydrological process of rapid change.

The application relates to the technical field of driving behavior analysis, and particularly provides a multi-resolution driving working condition identification and classification method. A plurality of time length sliding windows are set to perform multi-scale division on a multi-channel driving time sequence data stream, and a multi-resolution analysis system is constructed; longitudinal driving working conditions are identified and classified according to a yaw angular velocity energy index; a dynamic time warping algorithm is used to match data segments with transverse working condition templates, so that the identification and classification of the transverse driving working conditions are realized; and key driving events are calibrated, thereby providing fine data support for subsequent driving style analysis. The application combines the multi-scale sliding window and time sequence similarity measurement technology, effectively improves the driving working condition identification precision, and significantly reduces the misjudgment rate in complex scenes.

The invention provides a knowledge asset traceability tracking method based on digital watermarking, and the method comprises the steps: obtaining to-be-protected knowledge assets, and extracting the multi-modal feature representation of the knowledge assets; according to the method, spatial intensity mapping is dynamically generated by combining a prediction model, intelligent embedding is realized, a DWT-SVD mixed domain core technology is adopted, the multi-resolution analysis capability of discrete wavelet transform and algebraic stability of singular value decomposition are fully played, tracing anchor points are provided for watermarks, and meanwhile, a multiple security guarantee system is constructed, so that the security of the watermarks is improved. And finally, an asset identification module, a watermark generation module, an intelligent embedding module, a traceability verification module and an audit report module are integrated through end-to-end systematic design, so that a complete management closed loop is formed, and the system universality is improved. The full-life-cycle management function enables intellectual property risk management and control through log auditing and a visual report, so that the concealment and safety of the digital watermark are improved.

The application relates to the technical field of intelligent distribution of educational resources, and discloses a dynamic distribution management system of educational teaching resources based on machine learning. The system comprises the following steps: collecting, through a data acquisition module, resource request time stamps, transmission rates and computing load data of learning terminals in real time; processing the data by a multi-resolution analysis module to generate a resource use mode atlas containing time, space and content dimensions; analyzing the atlas by a resource demand mapping module using a pre-trained deep belief network to output accurate resource quota suggestions; optimizing the suggestions based on network topology by a delay compensation module to form a delay-resistant distribution scheme; executing the distribution by a resource scheduling module and starting audit tracking; and updating network parameters according to the audit data by an adaptive optimization module. The system realizes accurate prediction and dynamic adaptive optimization of resource demand, and improves resource utilization efficiency and teaching service quality.

This invention relates to the field of well logging data processing technology, and particularly to a method, system, and apparatus for improving the resolution of well logging data in thin sand layers. The method includes the following steps: S1, acquiring well logging data from thin sand layers in the area to be analyzed; S2, performing data preprocessing; S3, using wavelet transform technology for multi-resolution analysis to extract characteristic signals of the thin sand layers and enhance their resolution; S4, using a chart correction method to improve accuracy; S5, evaluating whether the characteristic signals of the thin sand layers processed in step S4 are acceptable. If the evaluation is unacceptable, steps S1-S5 are iteratively performed until the evaluation is acceptable. When the evaluation is acceptable, it indicates that the characteristic signals of the thin sand layers processed in step S4 represent well logging data with improved resolution. This achieves rapid and accurate high-resolution processing of acoustic logging data.

This application provides a TDLAS gas sensor and its anti-interference filtering and noise reduction method, relating to the field of gas concentration detection technology. The method includes: acquiring the original analog-to-digital conversion data of the gas to be measured; using an adaptive median filtering algorithm to filter, reduce noise, and correct the baseline of the original data to obtain a time-domain signal; and calculating the gas concentration based on Beer-Lambert's law. The adaptive median filtering algorithm uses multi-resolution analysis to decompose the signal into low-frequency and high-frequency components, identifies noise regions and absorption peak regions by calculating local gradient changes, and performs multi-scale reconstruction after adaptive threshold classification. This invention addresses the problem of TDLAS gas sensors being susceptible to interference from environmental temperature and pressure fluctuations. By protecting the absorption peak region while filtering out the noise region, it significantly improves the signal-to-noise ratio and detection stability, and has the advantages of strong anti-interference capability, fast response speed, and significant noise reduction effect.

The invention discloses a tACS artifact removal method and device combining multi-resolution analysis and principal component analysis, equipment and a medium. The method comprises the steps that electroencephalogram signals are obtained; dividing the electroencephalogram signal by adopting a multi-resolution analysis method based on wavelet transformation to obtain wavelet coefficients of different scales; performing principal component analysis on the wavelet coefficient by adopting a PCA algorithm, and removing components according to an analysis result; and processing the residual PCA components by adopting a power spectrum interpolation method, and reconstructing signals to obtain electroencephalogram signals without tACS artifacts. According to the method, multi-level frequency decomposition is carried out on the signals through wavelet transform, the frequency range where tACS artifacts are located is accurately positioned and separated, then PCA analysis is carried out on data of each frequency level, components containing the strongest artifacts are further distinguished and removed, other important physiological information is reserved, and the flexibility and accuracy of artifact processing are improved. The method can be widely applied to the field of electroencephalogram signal processing.

The invention relates to the technical field of intelligent aided driving, and particularly provides a multi-time-scale driving style analysis method, which comprises the following steps of: acquiring driving time sequence segments in seconds by a multi-resolution analysis method, and classifying working conditions; labeling a short-time driving style label through a driving behavior clustering method, and constructing and training a short-time driving style classification model; setting a medium-and-long-time driving task window with minute or hour as a unit, extracting a short-time driving style by using the trained short-time driving style classification model, acquiring a distribution vector according to a short-time driving style sequence in the medium-and-long-time driving task window, and mapping the distribution vector to a predefined medium-and-long-time style mode space, identifying a corresponding medium-time and long-time style mode through the clustering model; setting a long-time style window with weeks, months, seasons or years as units, counting medium and long-time style mode sequences in the long-time style window to obtain a distribution vector, mapping the distribution vector to a predefined long-time style evolution space, and realizing long-time style evolution analysis of the driver through a clustering classification model.

Embodiments of the present application disclose an identity authentication method, device and equipment, and a storage medium. The method determines a first key point of a first signature handwriting through a multi-resolution analysis manner; performs key point matching on the first key point and a second key point to obtain a key point matching pair; determines a matched first handwriting segment and a second handwriting segment according to the key point matching pair; and authenticates the first signature handwriting according to a distance between the matched first handwriting segment and the second handwriting segment. That is, the embodiments of the present application use signature handwriting to perform identity authentication, which can effectively avoid adverse consequences caused by username and password leakage, and at the same time, the key points of the first signature handwriting are determined by using a multi-resolution analysis manner, the influence of different resolutions on the key points is considered, and the accuracy of the key points is improved. Therefore, the accuracy of an authentication result can be improved when the first signature handwriting is authenticated based on the key points in the subsequent process, and thus the security of identity authentication can be improved.

The invention relates to the technical field of fault diagnosis and prediction, in particular to a power distribution network early fault diagnosis and prediction method based on transient signal feature mining and transfer learning. The method comprises the following steps: acquiring transient signals of key equipment of the power distribution network in normal and slightly abnormal states, and preprocessing the transient signals; extracting a multi-resolution feature vector based on the preprocessed transient signal, a wavelet packet, multi-scale Fourier and empirical mode decomposition, inputting the multi-resolution feature vector to a sparse auto-encoder, and extracting a key feature subset representing a fault stage; a feature distribution difference metric between the source domain device and the target device is constructed based on the key feature subset. According to the method, multi-resolution analysis means such as a wavelet packet, multi-scale Fourier transform and empirical mode decomposition are fused, and impact, oscillation and frequency spectrum characteristics reflecting slight abnormality of equipment are deeply excavated from transient voltage / current signals.

The invention discloses a distributed spectrum sensing noise stripping method based on wavelet gradient, and belongs to the technical field of communication and artificial intelligence crossing. The method comprises the following steps: acquiring original spectrum data through a distributed cognitive radio node; performing sliding window segmentation, Hanning window weighting and power spectrum density calculation on the data; the preprocessed data are input into a differentiable wavelet noise separation layer, the layer serves as a learnable one-dimensional convolution kernel through a parameterized biorthogonal wavelet filter, and end-to-end trainable multi-resolution analysis is achieved in a deep learning framework; calculating the power spectrum density gradient of the high-frequency detail coefficient in real time, and quantifying the noise abrupt change intensity based on a central difference method; dynamically generating a gating weight, and selectively suppressing the wavelet coefficient of the high-gradient frequency point; inputting the processed data into a one-dimensional convolutional neural network with residual connection for classification; and results are fused by adopting a clustering type collaborative decision-making mechanism.

The invention relates to a switching power supply fault diagnosis system based on sound wave signals. The switching power supply fault diagnosis system comprises a signal acquisition device and a fault diagnosis device, the signal acquisition device is arranged near the switching power supply in a non-contact manner and is used for acquiring sound wave signals generated in the working process of the switching power supply and sending the sound wave signals to the fault diagnosis device; the fault diagnosis device comprises an operation analysis module. And the operation analysis module is used for dividing the sound wave signal into a plurality of sub-bands based on a discrete wavelet transform method, extracting key features determined in advance for each fault type from the sub-bands, analyzing the key features by using a preset fault diagnosis model and outputting a fault diagnosis result. According to the switching power supply fault diagnosis system, the safety risk of operators is greatly reduced, the electrical parameters and the operation state of the switching power supply are not directly interfered, the calculation efficiency and the multi-resolution analysis capability can be improved by using the discrete wavelet transform method, and the accuracy of fault diagnosis is ensured.

The application discloses a GIS device-based detection method for the synchronization of the state of a knife switch and the action of a three-phase knife switch, comprising the following steps: 1, preprocessing current data and dividing data sets; 2, designing a CNN network based on a double-layer LSTM neural network with an attention mechanism and a dynamic time warping algorithm; 3, constructing the CNN network based on the double-layer LSTM neural network with the attention mechanism and the dynamic time warping algorithm; and 4, obtaining the output result of a test set sample based on the CNN network based on the double-layer LSTM neural network with the attention mechanism and the dynamic time warping algorithm. The application can provide multi-scale and multi-resolution analysis of time series, dynamically capture the characteristics of data in the time domain and the frequency domain, improve the detection accuracy of the synchronization of the state of a GIS device knife switch and the action of a three-phase knife switch, and thus meet the actual requirements of accuracy and rapidity.

The invention provides an arc fault signal feature extraction method based on wavelet analysis and a related device, and relates to the technical field of electrical safety monitoring. According to the method, self-adaptive filtering is achieved by collecting current and voltage signals and combining load type recognition, and an analysis window is dynamically adjusted according to the signal-to-noise ratio; carrying out multi-resolution analysis by adopting wavelet transform, and extracting typical features such as energy distribution and spectrum abrupt change points and wavelet entropy auxiliary features; and fault judgment is completed through deep learning and a support vector machine cascade model, confidence coefficient verification is carried out by fusing adjacent user data, and finally early warning information is uploaded. According to the scheme, the detection sensitivity and the anti-interference capability of weak arc are improved, the problems that a traditional circuit breaker has many recognition blind areas and the misoperation rate is high are effectively solved, and the circuit breaker is suitable for early fire early warning of an intelligent power distribution system.

The invention discloses an RLBI high-resolution angle parameter estimation method and device based on adaptive CS-STFT-IRT, and the method comprises the steps: receiving a target signal through employing double array elements of a rotating long baseline interferometer, and calculating a cross-correlation signal; multi-resolution analysis is carried out under the condition of multiple preset window lengths, and an adaptive compressed sensing hybrid algorithm is introduced to generate a time-frequency power spectrum matrix. And then, respectively executing inverse Radon transformation on the time-frequency power spectrum matrixes under different window lengths to obtain corresponding inverse Radon domain images, and extracting peak value information through an intelligent peak searching algorithm. And scoring each window length processing result according to a preset quality evaluation criterion, and adaptively selecting an optimal inverse Radon domain image. And accurately calculating the pitch angle and the azimuth angle of the target according to the peak point coordinates in the optimal image. According to the method, the limitation of the traditional method in the aspects of resolution and robustness is effectively overcome, and the angle estimation precision and reliability under the adjacent information source condition are remarkably improved.

The present disclosure provides a method for enriching for multiple genomic regions using a first bait set that selectively hybridizes to a first set of genomic regions of a nucleic acid sample and a second bait set that selectively hybridizes to a second set of genomic regions of the nucleic acid sample. These bait set panels can selectively enrich for one or more nucleosome-associated regions of a genome, said nucleosome-associated regions comprising genomic regions having one or more genomic base positions with differential nucleosomal occupancy, wherein the differential nucleosomal occupancy is characteristic of a cell or tissue type of origin or disease state.

The present application belongs to the field of acoustic signal processing, deep learning and intelligent operation and maintenance of industrial equipment, and discloses a voiceprint anomaly detection method and system based on wavelet convolution time domain feature extraction. In view of the technical bottlenecks such as poor robustness of voiceprint feature extraction and weak model generalization ability in the industrial scene, the multi-resolution analysis ability of wavelet packet transform and the end-to-end learning ability of convolutional neural network are deeply integrated to construct a wavelet convolution time domain feature extraction module with strong robustness, and an unsupervised anomaly classification module is built in combination with a variational autoencoder to form an end-to-end integrated model of feature extraction and anomaly classification. The present application only needs voiceprint samples of normal operation of equipment to complete model training, and in the industrial scene with strong background noise, it can not only accurately capture the transient time domain features of early weak faults of equipment, but also realize unsupervised and high-accuracy anomaly state classification, effectively solving the industry pain points of low detection accuracy under strong noise interference and lack of abnormal samples in the industrial scene.

This application provides a construction waste detection method and system based on YOLOv11 and wavelet convolution, relating to the field of computer vision. The method includes: constructing a target detection model; inputting acquired construction waste images into the Backbone layer to extract multi-scale features and generate a first feature map; inputting the first feature map into the Neck layer, fusing first feature maps of different depths to capture and enhance feature information at different frequencies, dynamically learning channel and spatial attention weights, and generating a second feature map for target detection of construction waste through the Head layer. This application embeds wavelet convolution modules and CBAM attention modules into the Backbone and Neck layers of YOLOv11 to enhance high-frequency details and cross-scale feature interaction capabilities. Through multi-resolution analysis and parallel detection heads, it can improve the detection accuracy of construction waste in complex scenes.

The invention provides a harmonic detection method for a charging pile, and relates to the technical field of harmonic detection, and the method comprises the following steps: 1, signal collection; step 2, wavelet decomposition; step 3, signal reconstruction; step 4, interference positioning; step 5, acquiring a fundamental wave frequency; step 6, building an Adaline network; 7, adjusting a weight vector; according to the method, the multi-resolution analysis characteristic of wavelets is combined and utilized, noise is effectively removed, meanwhile, useful components of the signals are reserved, the Adaline improved network is combined, the denoised signals serve as input, expected output is known harmonic components, the precision and efficiency of harmonic detection are improved, and the method has the advantages that the method is simple and convenient to operate, and the method is suitable for large-scale popularization and application. And the adaptability and the real-time performance of the system are enhanced.

The invention discloses a business expansion work order handwritten date identification method and system. The method comprises the steps of performing high-precision correction on an inclined work order image through a Zernike moment and edge joint estimation algorithm, and solving the problem of large-angle inclination of a work order without a table line; then positioning a handwriting date area by using a YOLOv8 model; for watermark and stamp interference possibly existing in the region, a frequency domain generative adversarial network (FD-GAN) is adopted for watermark elimination, and the network integrates frequency domain power spectrum analysis and wavelet domain multi-resolution analysis to accurately separate the watermark and reconstruct a stroke structure; and finally, carrying out OCR (Optical Character Recognition) by utilizing a CogVLM2 According to the method, the problem of low recognition rate of a traditional method under the interference of watermarks and stamps is effectively solved, and the automation efficiency and accuracy of business expansion work order processing are remarkably improved.

The present application belongs to the technical field of motor health evaluation and analysis, and particularly relates to a method and instrument for evaluating the health state of a motor of a new energy vehicle, comprising the following steps: collecting and synchronizing multi-modal motor signals, and generating a trigger event according to changes in the motor signals; constructing a four-dimensional tensor data set, fusing motor signal data through a graph neural network, and extracting cross-domain fault features based on the motor signal data; applying an improved wavelet packet decomposition to perform multi-resolution analysis on the cross-domain fault signals, and identifying implicit harmonics and transient impacts; extracting cross-domain fault features through an edge computing node, aggregating multi-device data to train a global diagnostic model using a federated learning framework, and a fault classification method under dynamic working conditions; and based on the global diagnostic model and the fault type under dynamic working conditions. The present application can realize multi-source synchronization of data in the evaluation of the health state of the motor, break through the limitations of single-modal data, and improve the accuracy of motor health evaluation.

The invention relates to the technical field of snowfall monitoring, and discloses a GB-ArcSAR-based airport pavement area snow measurement method, which comprises the following steps of: generating an echo signal by using a GB-ArcSAR, optimizing signal sampling through a self-adaptive sampling technology, and reducing redundant calculation; performing multi-resolution analysis on the echo signal in combination with wavelet transform, and extracting snow layer features; the extraction of snow layer features is optimized through a convolutional neural network, and a snow accumulation area is automatically identified; adopting fast Fourier transform to accelerate frequency domain processing of the echo signal; the data processing efficiency is improved through parallel computing and a distributed computing framework, it is ensured that the system can feed back accumulated snow information in real time, and airport snow removal work and flight scheduling are supported. Through the technical means of adaptive sampling, deep learning optimization, fast Fourier transform acceleration, parallel calculation and the like, the efficiency and precision of accumulated snow amount measurement are remarkably improved, redundancy calculation and processing bottlenecks are avoided, an efficient and stable accumulated snow monitoring solution is provided, and efficient operation of an airport and flight safety are ensured.

The present disclosure provides a method for enriching for multiple genomic regions using a first bait set that selectively hybridizes to a first set of genomic regions of a nucleic acid sample and a second bait set that selectively hybridizes to a second set of genomic regions of the nucleic acid sample. These bait set panels can selectively enrich for one or more nucleosome-associated regions of a genome, said nucleosome-associated regions comprising genomic regions having one or more genomic base positions with differential nucleosomal occupancy, wherein the differential nucleosomal occupancy is characteristic of a cell or tissue type of origin or disease state.

The invention discloses a speech recognition sampling method based on multichannel learnable wavelet transform, and belongs to the technical field of automatic speech recognition. The method comprises the following steps: acquiring a fbank spectrogram after voice signal calculation; constructing a speech recognition model, and optimizing the speech recognition model by adopting a learnable wavelet transform method; and completing speech recognition sampling based on the optimized speech recognition model. According to the method, by utilizing the characteristic that wavelet transform has multi-resolution analysis capability, the signal can be decomposed into sub-signals with different scales and directions, and feature fusion is performed after noise reduction processing, so that the model can capture the features of the audio in different scales and directions; the automatic learning optimal wavelet filter is used, so that different audio data features are better adapted, the expression ability and generalization performance of the model are improved based on a learnable nonlinear threshold, and the ability of the model to suppress noise and unimportant features can be improved.