124 results about "Sound image" patented technology

The present disclosure relates to the technical field of audio control. Provided are a computer-implemented method for audio control, and an electronic device and a storage medium. The computer-implemented method for audio control comprises: on the basis of a specified measurement signal, performing acoustic effect testing on a target space, in order to obtain environmental response information, wherein the environmental response information comprises impulse response information and post-separation impulse response information; analyzing the environmental response information, in order to obtain acoustic characteristic information of the target space; on the basis of the acoustic characteristic information, performing compensation processing on audio to be processed, in order to obtain regulated audio; regulating gains of multiple channels corresponding to the regulated audio, in order to obtain re-regulated audio; and performing multi-channel collaborative optimization processing on the re-regulated audio, in order to obtain audio having a target effect. The method achieves precise compensation for spatial acoustic defects, resolves inter-channel crosstalk, improves the acoustic image localization and spatial perception, significantly improves the perceptual audio quality, and optimizes an output.

The invention discloses a vehicle-mounted audio augmented reality system and method based on virtual-real fusion space anchoring, and relates to the technical field of intelligent cabin man-machine interaction, and the system comprises a controller, an augmented reality display device, a distributed loudspeaker array, and a sensor group. The controller receives the virtual image pixel coordinates, the eyeball position coordinates and the vehicle state semantic identifier, and stores a cabin three-dimensional digital model. The system converts a dynamic pixel coordinate into a three-dimensional virtual sound source coordinate by utilizing perspective inverse projection through vision-space mapping logic; the retrieval model anchors the semantic identifier to the physical component coordinates through the semantic-space mapping logic. The audio rendering module calculates a speaker drive gain based on the virtual sound source coordinates to synthesize a virtual sound source. By constructing a unified cabin three-dimensional digital model and a double-channel mapping mechanism, spatial alignment of an audio sound image, an AR visual track and a physical part of a vehicle body is realized, and audio-visual perception splitting is eliminated.

The present application provides output control device, output control system, and control method. The image and the sound with the sense of presence are provided to the passenger of the moving body. The output control device (1A, 1B, and 1C) has: position direction determination part (11), which determines the real position and the real orientation; reading part (12), which reads virtual space data (31); virtual position decision part (131), which decides the virtual position and the virtual orientation according to the real position and the real orientation; display control part (14), which makes the display device (4) display the image of the partial area or the partial object of the virtual space based on the virtual position and the virtual orientation and the setting position of the display device (4); sound output control part (15), which controls the position of the sound image formed by the output sound from the loudspeaker (5) based on the virtual orientation and the relative position relationship between the virtual position and the sound source body.

An information processing apparatus includes an acquisition section configured to acquire a situation of a subject vehicle and a situation of another vehicle, a setting section configured to set, on the basis of the situation of the subject vehicle and the situation of the other vehicle, a position in the subject vehicle at which a sound image of an occupant riding in the other vehicle is localized, and a sound image localization processing section configured to localize the sound image of the occupant at the position set by the setting section. The acquisition section acquires at least a position of a seat in which the occupant is seated, and the setting section sets an empty seat in the subject vehicle as the position where the sound image of the occupant in the other vehicle is localized. The present technology is applicable to an information processing apparatus for controlling telepresence.

The application discloses a ship-boat coupling type inspection robot for offshore wind turbine generator units, which comprises a drone and an unmanned ship, and a ship body monitoring module for assisting the drone in monitoring tasks is arranged on the unmanned ship; the body of the drone is in a cylindrical frame structure, can conveniently pass through inside a wind turbine tower drum, and the body is provided with a drone monitoring module; the drone monitoring module comprises an image acquisition device, a sound and image acquisition device and a vibration acquisition device, and can effectively acquire various data inside the tower drum of the wind turbine generator unit. The ship-boat coupling type inspection robot can realize all-around state monitoring and fault diagnosis of offshore wind turbine generator units by adopting the combined operation mode of the unmanned ship and the drone, can timely master the operation state of the wind turbine generator unit, early discover potential fault signs, reduce the fault rate, ensure safe and efficient power generation operation of the wind turbine generator unit, simultaneously changes the previous manual inspection mode, greatly saves the operation and maintenance cost, and ensures personnel safety.

The invention provides a navigation prompting method and device and electronic equipment, and relates to the technical field of navigation. The method comprises the following steps: determining a steering point according to a navigation path; when the vehicle enters the preset range of the steering point according to the navigation path, the initial position of a navigation sound image is determined according to the relative position of the steering point and a driver, and the navigation sound image is controlled to move from the initial position to the direction corresponding to the steering point, the navigation sound image is used for representing the position of the single loudspeaker for broadcasting the navigation prompt or the sensing orientation after the plurality of loudspeakers for broadcasting the navigation prompt are superposed. According to the invention, fixed broadcasting of navigation prompt is changed into spatialized dynamic broadcasting, the problem that a driver needs to change sight to confirm a route due to lack of direction level of traditional navigation prompt tone is solved, the driver can sense the steering direction through the sound direction while keeping the sight ahead, and the driving safety is improved. Therefore, the intuition and safety of navigation information transmission are improved.

An acoustic information processing method includes: a step (S201) of acquiring position information of a sound source object in a three-dimensional sound field based on an acoustic signal; a step (S201) of acquiring position information of a user in the three-dimensional sound field; a step (S202) of determining a plurality of representative directions; and a step (S203) of performing sound image processing of distributing a signal of the sound source object to the plurality of representative directions based on the position information of the user and the position information of the sound source object, in the step (S202) of determining, in a case where a selected candidate is one candidate from among candidates of selectable representative directions, the one candidate is determined as one of the plurality of representative directions, and in a case where the selected candidate is two or more candidates, one of the two or more candidates that is a front direction close to the user is determined as one of the plurality of representative directions.

This invention relates to the field of leakage detection technology, specifically to a process and apparatus for detecting leaks in the sealing layer of an artificial chamber. The process includes creating a sealed space through a gap; continuously evacuating the gap; and using an acoustic imaging device to perform full-area leakage detection on the inner side of the sealing layer while maintaining a preset negative pressure value within the gap. If a leak point exists in the sealing layer, the negative pressure within the gap on the outer side of the sealing layer causes airflow to flow from the inner side of the sealing layer to the outer side of the gap, generating characteristic sound waves for detection and identification by the acoustic imaging device, and visualizing the results as a cloud map. In this invention, by sealing the inherent through-type gap of the artificial chamber to create a sealed space, and then evacuating to construct a full-area negative pressure, full-area leakage detection of the sealing layer is achieved in conjunction with the acoustic imaging device. The leak point is accurately located through visualization of the characteristic sound wave cloud map, thus overcoming the limitations of traditional local detection, improving vacuuming efficiency, and simplifying operation.

The present application relates to a kind of audio-visual archives intelligent classification identification and archiving method and system, comprising the following steps: S1: according to the file classification of company audio-visual archives, storage period identification, file title, archiving department and file catalog service rule, constructs service rule system;S2: the original high-definition data of audio-visual archives is obtained and preprocessed, and face recognition library is constructed;S3: audio-visual archives file intelligent classification identification model is constructed;S4: according to the preprocessed audio-visual data and face recognition library, audio-visual archives file intelligent classification identification model is trained, and the optimized audio-visual archives file intelligent classification identification model is obtained;S5: based on the optimized audio-visual archives file intelligent classification identification model, each collection file is intelligently distributed in front of collection link, and based on service rule system verification, auxiliary archivist carries out audio-visual archives file auxiliary classification identification arrangement and cataloging archiving auxiliary work.The present application can accurately classify and catalog audio-visual archives.

To provide an "audio signal processor" for down-mixing a surround audio signal so as to obtain an excellent sound image feeling.SOLUTION: This device is provided with a pseudo surround audio signal generating part 1 for generating a surround audio signal SigA of 7.1. 2ch from an inputted audio stereo signal SigIN of 4ch, a signal processing part 2 for processing the surround audio signal SigA and outputting it as a signal SigB for down mix, and a down mix part 3 for synthesizing the signal SigB for down mix and outputting a stereo audio signal SigOUT of 2ch. The signal processing unit 2 combines the input audio signal of each channel of the SigA with the audio signal obtained by convolving the head-related transfer function from the speaker corresponding to the audio signal to the listener at a ratio corresponding to the position of the speaker, and outputs the combined signal as the audio signal of the SigB.SELECTED DRAWING: Figure 1

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.

The present disclosure relates to a method and device for acoustically imaging fan noise, an electric vehicle charging pile, and a storage medium. The method comprises: acquiring a noise time-domain signal generated by a fan when the fan is running; performing time-frequency conversion on the noise time-domain signal based on a short-time Fourier transform algorithm to obtain a noise frequency-domain signal; inputting the noise frequency-domain signal into a delay-and-sum beamformer to perform beamforming to obtain beam data; positioning principal component data of the beam data to obtain sound power data; and generating a sound image containing a sound source position according to the sound power data. In this embodiment, the resolution of the noise can be improved by positioning the principal component of the beam data, which achieves the effect of accurately positioning the sound source position and is conducive to obtaining a more accurate sound image.

This invention discloses an algorithm and system for audio and virtual scene synchronization adaptation in digital broadcasting, belonging to the field of virtual digital broadcasting technology. The method includes acquiring video stream data and audio stream data, identifying camera switching frames, and determining the switching type; acquiring the rendering load data of the current virtual scene to calculate the load coefficient, predicting the delay duration of the camera switching frame based on the switching type, and calculating the compensation time of the audio stream data by using the predicted delay duration and load coefficient; acquiring the historical coordinate data and current action characteristics of the virtual character, determining whether the coordinates are lagging or actually displaced, and adjusting the spatial distance attenuation coefficient of the audio stream data based on the determination result; acquiring the camera's pitch angle change data and adjusting the sound image height offset of the audio stream data; and using the compensation time, spatial distance attenuation coefficient, and sound image height offset as setting parameters for the audio stream data. This invention ensures audiovisual synchronization through adjustments in three directions: time, spatial distance, and sound image height.

A method for manufacturing a cymbal (1.1), in particular a ride cymbal, with a shaped sound, especially with a particularly narrow frequency range and short decay time, comprises the following steps: providing a blank made of sheet metal, forming the blank to create a base body (2) with a cymbal shape, automatically separating at least one edge piece from the base body (2) to create at least one sound shape recess (5) in the base body (2), wherein the sound shape recess (5) is open to an edge of the base body (2), and wherein the sound shape recess (5) is created for precisely shaping the sound according to a predetermined sound influence geometry. Furthermore, a cymbal (1.1) with a shaped sound and a system with such a cymbal.

The invention discloses a weak sound source sound pressure level calibration method based on an improved DAS beam, relates to the technical field of sound source positioning, and is used for solving the problem of repeated weak sound source positioning. According to the method, a distance matrix is constructed based on array geometric parameters, and a cross spectrum matrix and a steering vector are respectively calculated for a plurality of target frequencies in combination with a near-field propagation model to obtain a multi-frequency acoustic image; and performing normalization and relative threshold side lobe suppression on each frequency sound image result, superposing and highlighting a real sound source area on a scanning grid, suppressing a side lobe irrelevant to a position, and utilizing a sound pressure level calibration model obtained by training reference data to convert a sound image output quantity into a real sound pressure level, so as to realize spatial positioning and quantitative sound pressure evaluation of multiple sound sources. The weak sound source can still be clearly distinguished under the background that the sound pressure level difference of the strong and weak sound sources is large and the noise is complex, and the sound source positioning precision and the engineering detection reliability are improved.

The invention relates to the technical field of sound source positioning, and discloses a sound source three-dimensional positioning system and method based on a binocular acoustic camera, and the positioning system, and the system comprises a first acoustic camera and a second acoustic camera which are used for shooting the same sound source from different positions to obtain an acoustic image; the information processing system is in communication connection with the first acoustic camera and the second acoustic camera and is used for receiving and processing the acoustic image data acquired by the two acoustic cameras; and calculating the position coordinates of the sound source in the three-dimensional space based on the relative position relationship between the first acoustic camera and the second acoustic camera, the horizontal pixel path, the vertical pixel path and the pixel coordinates of the sound source in the first acoustic camera and the second acoustic camera in the acoustic image. The limitation that a traditional single acoustic camera can only achieve two-dimensional positioning is broken through, the two cameras collect acoustic images from different positions, the information processing system constructs complete logic of multi-source data fusion-three-dimensional coordinate calculation, and a basic solution is provided for complex three-dimensional space sound source positioning.

To realize localization of a sound image even with respect to an acoustic component in a low frequency band handled by a subwoofer.SOLUTION: A signal processing device includes a sound source assigning unit 61 that assigns each of a plurality of sound sources corresponding to different positions to one or more subwoofers according to a positional relationship with the sound source among a plurality of subwoofers installed in an acoustic space, and a signal processing unit 62 that generates a plurality of first sound signals respectively corresponding to the plurality of subwoofers from a plurality of sound source signals respectively corresponding to the plurality of sound sources according to a result of the assignment by the sound source assigning unit 61.SELECTED DRAWING: Figure 5

Embodiments provide an acoustic control device, a program product, and a method that can improve the positioning accuracy of an acoustic image by using only two speakers without using real-time control. An acoustic control device according to one embodiment is provided with: a filter calculation unit that calculates a first filter coefficient and a second filter coefficient of a virtual acoustic image filter to be applied to a sound source signal, on the basis of head transfer characteristic data for each of a plurality of hearing positions included in a hearing area; a first filter processing unit that outputs, to a first speaker, a first sound source signal obtained by multiplying the sound source signal by a first filter coefficient; and a second filter processing unit that outputs, to a second speaker, a second sound source signal obtained by multiplying the sound source signal by a second filter coefficient. The head transfer characteristic data for each of the plurality of listening positions includes head transfer characteristic data measured for head postures that differ for each listening position.

The utility model discloses an insulator defect detection device based on the acoustic image fusion technology, and particularly relates to the field of power transmission line maintenance, the insulator defect detection device comprises a connecting frame, an insulator is arranged at the bottom of the connecting frame, a ring winding detection mechanism and a padlock mechanism are arranged on the outer wall of the connecting frame, and the ring winding detection mechanism comprises a gear motor arranged on one side of the connecting frame. The gear motor is arranged in a vertical state, a threaded rotating rod is arranged at the bottom of the gear motor, the threaded rotating rod is arranged vertically downwards, the length of the threaded rotating rod is larger than that of the insulator, and the outer wall of the threaded rotating rod is in threaded connection with a supporting plate; according to the utility model, the ring winding detection mechanism and the padlock mechanism are arranged, and the structure of the detection equipment is driven to rotate around the outer side of the insulator, so that the equipment for detecting the defects of the insulator can surround the outer side of the insulator to carry out comprehensive detection; and the condition of omission caused by incomplete insulator defect detection effect is avoided.

This invention discloses an audio rendering method, apparatus, device, and computer-readable storage medium, applied in the field of computer technology. The method includes: extracting sound bed components, audio object components, and metadata from a spatial audio file; mapping the audio object components to virtual speaker channels for sound image localization based on the metadata, obtaining a first format file; mapping the sound bed components to a second format file; the second format file is a spherical format file; merging the first and second format files to obtain a target rendering file; and performing audio rendering based on the actual playback scene and the target rendering file. Compared to current uniform rendering, which results in poor audio rendering quality, this invention distinguishes between the rendering processes of objects and sound beds, and uses a mapping algorithm for sound image localization to achieve channel gain allocation. This avoids the sound image blurring caused by phase interference in traditional solutions, thus better preserving the creator's intent and sound field consistency, thereby improving the rendering effect.

The invention relates to a panoramic sound space sound image positioning precision analysis method and device and electronic equipment. Comprising the following steps: determining sound image positioning positions, and acquiring an audio signal when a preset test audio is played at each sound image positioning position by using a head simulation audio acquisition device to obtain an audio signal pair of each sound image positioning position; calculating a time difference value and a sound pressure difference value of each position, and calculating an autopower spectrum of each audio signal pair by using Fourier transform; and carrying out region division on the spatial position and determining a weight, and obtaining a positioning precision analysis result according to a time difference value, a sound pressure difference value, a first autopower spectrum and a second autopower spectrum of each sound image positioning position and four parameter results of each position in a corresponding position in the ideal observer model. Therefore, the problems of consumption of a large amount of manpower and time cost, low precision, large result discreteness, difficulty in reproduction and the like in related technologies are solved, the influence of human subjective factors is eliminated, and the result has consistency, objectivity, stability and reproducibility.

The invention discloses an audio processing method and device, electronic equipment and a storage medium, and relates to the technical field of audio processing, and the method comprises the steps: obtaining the spatial distribution information of a plurality of loudspeakers in a target space and the pose information of a listener, and obtaining the azimuth information of a virtual sound source of an audio signal, the pose information comprises the offset position of the listener relative to each loudspeaker and the head orientation; performing sound field reconstruction processing on the audio signal based on the azimuth information and the pose information of the virtual sound source and a head-related transfer function acquired in the target space to obtain a binaural audio signal; and when the virtual sound source is in the lateral orientation of the listener, correcting the binaural audio signal according to the orientation information and the spatial distribution information of the virtual sound source to obtain a target binaural audio signal. The positioning definition of the lateral sound image can be improved.

The present application relates to a kind of sound leakage detection method, system, equipment and storage medium of secret meeting room, its method includes obtaining image data and the visual angle range data corresponding to image data;According to image data, corresponding sound data is called, sound data includes sound spectrum data and sound imaging data, sound spectrum data is the sound spectrum diagram of sound, sound imaging data can reflect the image of sound source distribution position;Based on the matching rule of pre-established, according to visual angle range data and sound imaging data, the sound source position in visual angle range data is matched, and target sound source is marked in sound imaging data;According to the preset image analysis rule and sound imaging data, adjust sound spectrum data, obtain target sound spectrum data;Based on the preset sound spectrum transformation model, target sound spectrum data is inversely transformed, and the target audio data corresponding to image data is obtained.The present application realizes the effect that the sound condition in the limited range outside secret meeting room is monitored.

To provide a sound image adjustment method and a volume adjustment method for correcting the offset of a sound image sensed by a user, and an audio output device and a volume adjustment method for correcting the volume difference between left and right speakers caused by the mass difference of the mechanical structures of the speakers placed against the left and right ears.SOLUTION: A sound image adjustment method obtains a volume difference between a first sound wave and a second sound wave, and adjusts a time difference between the first sound wave and the second sound wave. The volume adjustment method obtains a volume difference between the first sound wave and the second sound wave, and adjusts an amplitude difference between the first excitation and the second excitation. An audio output device corrects an offset of the sound image perceived by a user due to a mass difference between the first mechanical structure and the second mechanical structure. The audio output device also corrects a volume difference between the first speaker and the second speaker due to a mass difference between the first mechanical structure and the second mechanical structure.SELECTED DRAWING: Figure 9

The present technology relates to a sound processing apparatus and a sound processing system for enabling more stable localization of a sound image.A virtual speaker is assumed to exist on the lower side among the sides of a tetragon having its corners formed with four speakers surrounding a target sound image position on a spherical plane. Three-dimensional VBAP is performed with respect to the virtual speaker and the two speakers located at the upper right and the upper left, to calculate gains of the two speakers at the upper right and the upper left and the virtual speaker, the gains being to be used for fixing a sound image at the target sound image position. Further, two-dimensional VBAP is performed with respect to the lower right and lower left speakers, to calculate gains of the lower right and lower left speakers, the gains being to be used for fixing a sound image at the position of the virtual speaker. The values obtained by multiplying these gains by the gain of the virtual speaker are set as the gains of the lower right and lower left speakers for fixing a sound image at the target sound image position. The present technology can be applied to sound processing apparatuses.

To control generation of a sound image so as to further improve interactivity.SOLUTION: A sound image control device includes a virtual sound image generation filter that generates a virtual sound image in a space using a speaker array including a plurality of speaker elements, and a control unit that controls a spatial spread of the sound image in accordance with a motion of one or more body parts acquired by motion capture. The present technology can be applied to, for example, a real-time virtual sound image generation system using a linear speaker array or a spherical speaker array.SELECTED DRAWING: Figure 2

The application discloses a sound control method, electronic equipment and computer readable storage medium. The sound control method comprises the following steps: obtaining actor position information, stage size information and stage equipment position information; performing position relationship judgment processing according to the actor position information and the stage size information, and generating channel opening control information in the case that the actor is located in the stage; performing calculation processing according to the actor position information and the stage equipment position information, and determining a sound image value, a target sound source, a target output channel and volume control information; generating a sound control instruction according to the channel opening control information, the sound image value, the target sound source, the target output channel and the volume control information; and controlling stage sound according to the sound control instruction. According to the scheme of the application, the audio output of the sound can be adjusted according to the position relationship between the performer and the stage and the stage equipment, and better stage performance effect can be presented.

To reduce deviation between the visual line direction of a crew member boarding a vehicle and the sound image localization position in the vehicle.SOLUTION: In an on-vehicle device which is installed on a vehicle, the on-vehicle device comprises a visual line detection sensor which detects a visual line direction of a crew member boarding the vehicle and a control part which adjusts sound image localization position of sound outputted to the inside of the vehicle. The control part performs adjustment so that the sound image localization position is in the visual line direction on the basis of the visual line direction of the crew member which the visual line detection sensor has detected.SELECTED DRAWING: Figure 1

The invention provides a multi-channel acoustic intelligent sofa with a built-in resonance cavity, and relates to the technical field of intelligent furniture, the multi-channel acoustic intelligent sofa comprises a sofa body, the sofa body comprises a cushion area, a backrest area and armrest parts located on the two sides of the cushion area; at least one low-pitch playing module is arranged on the armrest part, at least one high-pitch playing module is arranged on the backrest area, and the high-pitch playing module and the low-pitch playing module are separated in space to form sound field subareas; the armrest part is arranged to be of a box-type structure with a closed resonance cavity inside, and the bass playing module is located in the resonance cavity; and low-frequency sound waves of the bass playing module are output after being enhanced by the resonance cavity. The armrest comprises a low pitch playing module and a high pitch playing module, the armrest part is provided with a closed resonance cavity, sound energy is amplified in the closed resonance cavity and then is transmitted through a structure, and a shocking body feeling is brought; and the high-frequency part drives a high-pitch loudspeaker of the backrest to directly reach human ears to form a clear sound image.