65 results about "Sound classification" patented technology

Audio frames are classified as either speech, non-transient background noise, or transient noise events. Probabilities of speech or transient noise event, or other metrics may be calculated to indicate confidence in classification. Frames classified as speech or noise events are not used in updating models (e.g., spectral subtraction noise estimates, silence model, background energy estimates, signal-to-noise ratio) of non-transient background noise. Frame classification affects acceptance/rejection of recognition hypothesis. Classifications and other audio related information may be determined by circuitry in a headset, and sent (e.g., wirelessly) to a separate processor-based recognition device.

The invention particularly relates to an audio/video combined monitoring method and a system thereof, belongs to the technical field of industrial environment monitoring, and aims to solve the problems in the prior art, for example, the monitoring is only conducted by video monitoring operators on duty, who are easy to be fatigue and hardly identify places with potential safety hazards, moreover, video monitoring is limited by functions and viewing angles, so that the potential hazard cannot be found in time, thereby missing rescue opportunities. The audio/video combined monitoring method uses audio signals and video signals at the same time to conduct environmental monitoring, and guides the operators on duty to selectively observe video windows by using the identification results of the audio signals. The processing method of the audio signals comprises the following steps: (1) feature extraction, (2) model training, (3) sound classification, (4) online study, and (5) hazard rating evaluation.

The invention discloses a sleep snoring sound classification detecting method based on depth learning. The method mainly comprises the steps of collecting sleep sound signals of a patient to be detected all night long through a sensor, detecting sonic sections in the sleep sound signals, and obtaining a sonic section map in the sleep sound signals; adopting depth learning for performing snoring sound and non-snoring sound classification on the sonic section map, and reserving a pure-snoring sound recognition result; then, adopting the depth learning for classifying four types of snore sounds for the pure-snoring sound recognition result, and completing automatic recognition and detection on snoring sounds of the patient suffering from obstructive sleep apnea-hypopnea syndrome (OSAHS); according to the snoring sound recognizing and detecting result, counting the number of snoring sounds of each type of the patient to be detected all night long, and obtaining an AHI index of the patientto be detected all night long. The invention further discloses a detecting system of the sleep snoring sound classification detecting method based on depth learning. The method and system can effectively and accurately evaluate whether or not a snoring object falls ill and evaluate the illness degree, and data references are provided for the patient suffering from the OSAHS.

A digital electronic stethoscope includes an acoustic sensor assembly that includes a body sensor portion and an ambient sensor portion, the body sensor portion being configured to make acoustically coupled contact with a subject while the ambient sensor portion is configured to face away from the body sensor portion so as to capture environmental noise proximate the body sensor portion; a signal processor and data storage system configured to communicate with the acoustic sensor assembly so as to receive detection signals therefrom, the detection signals including an auscultation signal comprising body target sound and a noise signal; and an output device configured to communicate with the signal processor and data storage system to provide at least one of an output signal or information derived from the output signal. The signal processor and data storage system includes a noise reduction system that removes both stationary noise and non-stationary noise from the detection signal to provide a clean auscultation signal substantially free of distortions. The signal processor and data storage system further includes an auscultation sound classification system configured to receive the clean auscultation signal and provide a classification thereof as at least one of a normal breath sound or an abnormal breath sound.

The invention provides a control system and method for an acoustic control window. In the system, whether a sound comes inside the window or outside the window can be determined through a microphone array; and the type of the sound can be determined through a sound classification module; and a control module customized by a user automatically decides the state of the window. The design scheme ensures that the window can be automatically closed according to user setting so as to bring convenience for the user.

The present invention discloses a cochlear implantation sound scene identification system and method. The system comprises a foreground and background classifier, a foreground feature extraction module, a foreground identification network, a background feature extraction module, a background identification network, a comprehensive scene determination module and a program selector, and the foreground and background classifier performs classification of foreground and background sound for sound signals of an input system and then outputs the processed sound signals; after classification of the foreground and background classifier, if the sound signals are foreground sound, the sound signals are input to the foreground feature extraction module, and after extraction of sound features, a foreground feature array is output to the foreground identification network; if the sound signals are background sound, the sound signals are input to the background feature extraction module, and after extraction of sound features, a background feature array is output to the background identification network; through comprehensive analysis, the concrete classification of the current scene is output; and an output program is selected. Compared to a traditional scene identification system, the cochlear implantation sound scene identification system and method can identify more sound scenes.

A system method and computer program product for hierarchical categorization of sound comprising one or more neural networks implemented on one or more processors. The one or more neural networks are configured to categorize a sound into a two or more tiered hierarchical course categorization and a finest level categorization in the hierarchy. The categorization of a sound may be used to search a database for similar or contextually related sounds.

The embodiment of the invention provides a far-field sound classification method, and the method comprises the steps: building a far-field sound classification relation through the self-learning capability of an artificial intelligence model, and enabling the far-field sound classification relation built by the self-learning capability of the artificial intelligence model to be a far-field sound classification relation built based on data augmentation and a convolution neural network of multi-scale information; acquiring a voice signal in the target area; performing feature extraction on the voice signal based on the amplitude information of the voice signal to obtain a spectrogram; and inputting the spectrogram into a far-field sound classification relationship established by utilizing the self-learning ability of the artificial intelligence model to obtain a classification result. Audio data of sound classification is matched with signal distribution received by a microphone in a real environment; according to the method, noise, reverberation and other interference factors are removed, and sound classification is carried out by using a data augmentation mode, so that training data of the model can better fit data distribution of a real environment, better robustness can be obtained, and the accuracy of a sound classification task is improved.

The invention relates to the field of audio signal recognition, and in particular, relates to a breathing sound classification method based on deep learning. The method comprises the steps: S1, acquiring an audio signal sample of breathing sound, and preprocessing the audio signal; S2, according to breathing sound period text information, performing period division on the audio signal in the stepS1 to obtain a breathing sound signal of a set period; performing data enhancement on the breathing audio signal in the data set through an audio data enhancement method, and extracting acoustic features of the breathing audio signal; and S3, constructing a type recognition model by using the acoustic features extracted in the step S3 to classify and recognize the breathing sound to obtain a classification and recognition result.

An embodiment of the invention discloses a voice verification method, a voice verification device, computer equipment and a storage medium. The method includes the steps: acquiring verification voiceinformation; judging whether a voice content is a preset sound category or not according to the verification voice information; determining that voice verification fails when judging that the voice content does not belong to the preset sound category. The verification voice information is the voice content acquired by a target terminal when a verification user reads the verification information, and the preset sound category is sound classification representing the voice content of human voice. The method verifies whether the verification voice is real human voice or not, malicious users suchas a machine, AI (artificial intelligence) and crawlers can be effectively removed, attack of the malicious users to networks and platforms is prevented, validity and reality of verification users areensured, and voice verification safety is improved.

The invention discloses a broiler feed intake detection system based on an audio technology. The system comprises a sound collection chamber, a switch, an upper computer and a server, and is characterized in that the sound collection chamber is used for collecting broiler pecking audio data; the switch is used for transmitting broiler pecking audio data; the upper computer is connected with the server and reads the audio data at regular time; a broiler pecking sound classification and recognition model algorithm based on a one-class support vector machine OC-SVM operated in a server makes thesound divided into pecking sound and non-pecking sound, and pecking and non-pecking are accurately judged by taking power spectral density as sound recognition features; and the broiler feed intake isobtained based on the relationship between the broiler pecking times and the feed intake. According to the method, an audio detection technology is taken as a carrier, the relationship between pecking times and feed intake is analyzed and determined according to the pecking times of the broiler chickens during feeding, and the feed intake of the broiler chickens is calculated by utilizing high correlation between the pecking times and the feed intake.

The invention relates to a direct broadcasting room singing identification method and device, a server and a storage medium, and relates to the field of direct broadcasting. Firstly, a sound feature vector sequence is classified through a music sound classification model, and a classification result is obtained; if the classification result represents that the sound feature vector sequence comprises a music sound feature vector, an audio stream comprising the music sound feature vector is extracted from the direct broadcasting stream; then a human voice feature vector in the audio stream including the music voice feature vector is extracted; and finally, the human voice feature vectors are classified through a singing voice classification model to obtain a classification result. With the above analysis, the sound feature vector sequences are classified through the music sound classification model, and then the human voice feature vectors are classified through the singing sound classification model so that the obtained classification result is more accurate, and whether the anchor in the current direct broadcasting room is singing or not can be determined more accurately.

The invention provides a cable fault point rapid positioning method and device. The fault point positioning method comprises the steps of collecting a plurality of second sound signals, extracting spectrum characteristic parameters, inputting the spectrum characteristic parameters into a trained sound classification model, and preliminarily judging whether the second sound signals comprise a cable fault sound signal or not; performing noise reduction processing on the second sound signals through a noise reducer, and judging whether the second sound signals after noise reduction processing contain a cable fault sound signal or not; and if the second sound signals after noise reduction processing contain the cable fault sound signal, inputting the frequency spectrum characteristic parameter in the second sound signals into a pre-constructed sound analysis model to obtain an impact function coefficient characteristic, and based on the impact function coefficient characteristic and a pre-constructed sound source positioning model, obtaining the distance between the cable fault sound source and a sound acquisition terminal, and then obtaining the position of the cable fault point.

The invention provides an audio and video combined pedestrian accidental tumble monitoring method based on a neural network. The method comprises the steps of constructing an initial training set and a test set; constructing a pedestrian target detection model; carrying out time sequence classification recombination on the pedestrian targets output by the pedestrian target detection model by using a frame recombination method; constructing an action recognition classification network model as a video classifier; constructing a call-for-help sound classification network model as an audio classifier; performing joint judgment on video and audio classification results by using a D-S evidence theory; and comprehensively outputting a judgment result. According to the invention, the tumble accident of the pedestrian is monitored by using the audio and video monitoring data, assistance is provided for public safety behavior analysis, and the loss of life and property is reduced.

The invention discloses a real-time sound classification method based on an FPGA, wherein the method comprises the steps: carrying out feature extraction of sound data through the FPGA, obtaining an MFSC feature map of the sound data, carrying out calculation of the obtained MFSC feature map through a CNN classification network, and achieving the classification function of collected sounds; and monitoring and classifying the external sound conveniently and quickly anytime and anywhere. The system has the advantages of low power consumption, low cost, portability, real-time performance, high practicability and the like.

The invention relates to a method for selecting the semi-mute broadcasting mode of a television. The method comprises the steps as follows: (1) entering a sound classification menu from a view-guiding main menu and configuring a semi-mute interface at the same time; (2) configuring the control of the navigation and direction keys of a TV remote controller and adjusting left navigation keys and right navigation keys corresponding to a channel classification menu; (3) selecting a semi-mute function to be in 'on' state with the semi-mute function started; (4) firstly recording current volume variable data and storing the variable data in the temporary variable and then halving the volume variable data to be read into a corresponding register by a mute key, with the volume instantly halved so as to realize the semi-mute state; pressing the mute key again and clearing the volume variable to zero to be read into the corresponding register, with full mute state; (5) selecting the semi-mute function to be in 'off' state with the semi-mute function not started and then pressing the mute key again to have original mute function and realize the full mute state. The method for selecting a semi-mute broadcasting mode of a television provided can rapidly and conveniently reduce the volume, with convenient use.

The invention provides a sound big data analysis and calculation imaging system based on a cloud side end. The system comprises a sound data acquisition module, a sound preprocessing module, a digital audio recognition module, a digital audio imaging processing module and a calculation result management module. According to the invention, a new early warning form and method are provided for city safety monitoring, and the intelligent demand of city emergency early warning in digital city construction is satisfied by using a deep learning sound classification model and a sound graphical search algorithm of the cloud.

The embodiment of the invention discloses a method and a device for realizing alarming. In specific implementation, the method comprises the following steps of: acquiring ambient sound of the environment where a user is , inputting the acquired ambient sound into a sound classification model generated by pre-training to obtain a classification result of the ambient sound, and when the classification result of the ambient sound belongs to a dangerous environment, sending alarming information to a first terminal used by a user and/or second terminal equipment bound with the first terminal equipment. Namely, when the user is in a dangerous environment, the user does not need to actively trigger the alarm function, the user is identified to be in the dangerous environment according to the sound of the current environment of the user, and the alarm information is automatically sent to the first terminal and/or the second terminal, so that the purposes of intelligent alarming, reminding theuser to pay attention to safety and/or notifying relatives of the user are achieved, and the user safety is fully protected.

The disclosure relates to a system for generating a status output based on sound emitted by an animal. The system comprising: a client (102), a server (104) and a database (106); the database (106) is accessible (107) by the server (104) and comprises historic sound data pertaining to the animal (302) or animals of the same type as the animal; the client (102) comprising circuitry (110) configured to: detect (202) sound emitted (308, 312) by the animal (302); record (204) the detected sound (308, 312); analyze (206) the recorded sound for detecting whether the sound (308, 312) comprises a specific sound characteristic out of a plurality of possible sound characteristics, wherein the sound characteristic includes at least one of intensity, frequency and duration of the detected sound; transmit (208), in response to detecting that the sound (308, 312) comprises the specific sound characteristic, the recorded sound to a server (104); the server (104) comprises circuitry (122) configured to: receive (210) the recorded sound; classify (212) the recorded sound by comparing one or more sound characteristics of the recorded sound with the historic sound data comprised in the database (106); generate (214) the status output based on the classification of the recorded sound. A method (200) for generating a status output based on sound emitted by an animal is also provided.

An audio device with a number of microphones that are configured into a microphone array. An audio signal processing system in communication with the microphone array is configured to derive a plurality of audio signals from the plurality of microphones, use prior audio data to operate a filter topology that processes audio signals so as to make the array more sensitive to desired sounds than to undesired sounds, categorize received sounds as one of desired sounds or undesired sounds, and use the categorized received sounds and the categories of the received sounds to modify the filter topology.

The invention relates to the technical field of sound recognition, and particularly provides a sound recognition method and device, electronic equipment and a storage medium. The method comprises the steps of carrying out the preprocessing of the obtained hylobatidax recording data, extracting Mel spectrum features, obtaining hylobatidax audio clips in to-be-classified hylobatidax recording data through a hylobatidax sound classification model obtained through the training of the Mel spectrum features, splicing and cutting the hylobatidax audio clips to obtain a complete hylobatidax audio, and further recording the chirping time of the hylobatidax in the target area, thereby realizing efficient monitoring of the hylobatidax. Due to the fact that the adopted hylobatidax sound classification model is lighter, hylobatidax audio clips in hylobatidax recording data can be rapidly recognized, and real-time monitoring of hylobatidax is achieved.

The invention discloses a sound classification method without digital feature extraction and calculation. The method comprises the following steps of: 1, obtaining an analog recording signal through a recording system, and obtaining analog signals of N frequency bands through an analog filter group formed by analog circuits, N being the number of frequency bands required by a feature vector; 2, respectively processing the analog signals of the N frequency bands generated in the step 1, and carrying out energy calculation; 3, converting the analog energy characteristics of each frequency band into digital energy characteristics through an analog-to-digital converter; and 4, performing matching calculation on the digital energy characteristics of each frequency band and the model data to obtain the type of the sound. According to the method, an analog signal processing method is adopted to replace a digital signal processing method to obtain sub-band energy feature vectors required by simple sound classification, and the method can be suitable for simple sound classification.