166 results about "Signal encoding" patented technology

The invention belongs to the technical field of wireless communication and artificial intelligence, and discloses a multi-mode semantic communication method and device oriented to multiple tasks, which avoid low-layer signal coding transmission of original data through extraction and transmission of semantic features, realize end-to-end optimization and channel adaptive robust transmission of semantic level communication, and improve the communication efficiency. The bandwidth occupation is obviously reduced; and the anti-noise performance is improved. Semantic transmission and task execution of multi-source data such as images, texts and voices under a unified framework are achieved through a shared neural network encoder and a channel interface, the robustness of tasks is kept under the complex channel condition, and cross-domain semantic expression among modes such as vision, texts and voices is achieved through the framework. Radio frequency data are sent and received in a real hardware platform, physical combination of an algorithm and a radio frequency link is achieved, and implementation of deep semantic communication in an actual wireless link shows that the method has engineering deployability and expansibility.

The invention discloses a multi-modal speech enhancement method and device based on a deep learning model, and relates to the technical field of artificial intelligence, and the method comprises the steps: obtaining the head posture data, binaural audio signals and visual context information of a user in a virtual reality environment, coding the binaural audio signals into three-dimensional space acoustic features, and carrying out the coding of the three-dimensional space acoustic features; and extracting virtual sound source position features and lip motion features from the visual context information, inputting the features into an immersive fusion enhancement network, selectively enhancing or inhibiting acoustic features from different spatial directions, generating an enhanced audio stream, and outputting the enhanced audio stream through a binaural rendering engine. According to the method, the technical problems that in the prior art, due to the fact that multi-modal prior information cannot be effectively fused, voice enhancement lacks spatial selectivity, and an interference sound source irrelevant to vision is difficult to restrain are solved, and head posture dynamic attention and lip motion cross-modal constraint are fused; the technical effects of natural binding of auditory attention and a visual focus and effective suppression of an interference sound source are achieved.

This invention relates to the field of control methods for public transportation equipment, specifically to a control method for LED wall washer lights for driver fatigue wake-up in long tunnels. The method includes: calibrating driver fatigue-sensitive sections in each spatial unit of the entire tunnel and completing alignment; updating the vehicle's spatial unit and collected parameters in real time to classify the driver's real-time fatigue state; generating a fatigue wake-up light signal encoding parameter set for the vehicle corresponding to the current driving tracking ID, the current fatigue state, and the current spatial unit; and driving the wall washer lights to generate optical flow signals according to the set parameters. This invention constructs an optical flow signal framework deeply bound to the driving state, simultaneously achieving both fatigue wake-up and directional navigation functions. It also binds the driver's real-time fatigue state classification to a stepped stimulation level, ensuring that the optical flow signal only acts on the surrounding visual area corresponding to the tunnel sidewall, without interfering with the driver's observation. This spatial distribution eliminates the interference of dynamic lighting on normal driving observation.

FIELD: video signal encoding and decoding.SUBSTANCE: residual coefficient of the residual block is extracted. The quantization parameter for the residual block is calculated. Inverse quantization on the residual coefficient using the calculated quantization parameter is performed. A residual sample of the residual block is formed by performing an inverse transform on the inversely quantized residual coefficient. The encoded residual coefficient for the partial region in the residual block is not transmitted from the encoding device. The residual sample of the partial region in the residual block is set to the default value preset in the decoder, which is 0. The default value is set based on at least one of the size or shape of the residual block. A partial region is a region excluding at least one of the N columns on the left side of the residual block or M rows on the top side of the residual block.EFFECT: increased efficiency of video signal coding.9 cl, 16 dwg

A multi-channel signal encoding method includes determining a downmixed signal of a first channel signal and a second channel signal in a multi-channel signal, and reverberation gain parameters corresponding to different subbands of the first channel signal and the second channel signal, where the obtained reverberation gain parameters belong to at least two reverberation gain parameter groups. The method further includes selecting, from the at least two reverberation gain parameter groups, a target reverberation gain parameter group. The method further includes generating parameter indication information, where the parameter indication information indicates the target reverberation gain parameter group. The method further includes encoding reverberation gain parameters corresponding to the target reverberation gain parameter group, the parameter indication information, and the downmixed signal to obtain a bitstream.

The present disclosure provides an apparatus and method for encoding a video with ultra-low latency, the apparatus including: one or a plurality of video sources configured to provide a video signal; an encoder configured to encode the video signal provided through the video source and provided for each of the video sources; and a caster configured to transmit video data encoded by the encoder to the outside through a network communication network.Accordingly, the present disclosure can transmit a video with ultra-low latency, so a video service is possible in real time anytime anywhere as long as the internet is connected, whereby there is the advantage that the present disclosure can be applied to various fields of 4th industry such as autonomous driving, unmanned drone operation, driving of unmanned heavy equipment, robot control, a remote medical service, VR / AR, an intelligent CCTV, a smart city⋅factory, provision of traffic information, etc.

Various problems in a wire rope, such as internal defects, fatigue damage, wear, and corrosion, are nondestructively analyzed by momentarily magnetizing a wire rope with a permanent magnet for detection and detecting, via sensors, magnetic flux leakage signals that are generated in the magnetized state, but issues arise: defect signals are not clearly delineated due to environmental noise and trends contained in raw magnetic flux leakage signals; and signal distortion caused by the dynamic state of a rope must be removed to detect defects more accurately. To address these issues, data preprocessing comprises: a channel trend removal step for removing low-frequency signals below a threshold after acquiring signal data from a plurality of Hall sensors; a channel noise removal step for identifying high-frequency signals above the threshold as noise and removing same from the signal data that has undergone the trend removal step; a change point detection step for removing the effect of the wire rope moving upward, downward, or being stationary, to distinguish states and calculating information for detecting defects; and a Hilbert transform step for making the signs of the signals to be the same on the basis of the threshold so that the defects of the wire rope can be detected.

This sound signal downmixing method comprises: a delayed crosstalk addition step for, with respect to each of two channels, acquiring, as a delayed crosstalk-added signal of the channel, a signal obtained by adding an input sound signal of the channel and a signal obtained by delaying an input sound signal of the other channel and multiplying the delayed input sound signal by a weight value that is a predetermined value with an absolute value less than 1; a left-right relation information acquisition step for acquiring preceding channel information that is information indicating which of the delayed crosstalk-added signals of the two channels precedes, and a left-right correlation value that is a value indicating the magnitude of a correlation between the delayed crosstalk-added signals of the two channels; and a downmixing step for acquiring a downmixed signal by performing weighted addition of the input sound signals of the two channels such that the input sound signal of the preceding channel out of the input sound signals of the two channels is included in a larger proportion as the left-right correlation value is larger, on the basis of the left-right correlation value and the proceeding channel information.

The video decoding method of the present invention comprises the steps of: generating a merge candidate list in a current block; specifying any one of a plurality of merge candidates included in the merge candidate list; deriving a first affine seed vector and a second affine seed vector of the current block based on the first affine seed vector and the second affine seed vector of the specified merge candidate; deriving an affine vector of a sub-block of the current block using the first affine seed vector and the second affine seed vector of the current block; and performing motion compensation prediction on the sub-block based on the affine vector.

The image decoding method according to the present invention includes the following steps: deriving merging candidates of the current block from neighboring blocks; adding the derived merging candidates to a merging candidate list; and when the number of merging candidates already added to the merging candidate list is less than a threshold, adding at least one predicted region merging candidate included in the predicted region motion information list to the merging candidate list; deriving motion information of the current block based on the merging candidate list; and performing motion compensation on the current block based on the derived motion information.

The application discloses a voice dialogue method, system, device and medium, wherein the method inputs a first target voice signal into an audio coding network for signal coding to obtain a first audio coding unit sequence, the first audio coding unit sequence includes a plurality of audio coding units, and each audio coding unit corresponds to an audio frame in the first target voice signal; inputs the first target voice signal and the first audio coding unit sequence into a large language model for disambiguation reasoning to obtain an audio response unit sequence output by the large language model; inputs the audio response unit sequence into an audio decoding network for signal waveform reconstruction to obtain a voice response signal, and performs dialogue response on the first target voice signal of the user according to the voice response signal. The method can effectively improve the response speed of voice dialogue and is beneficial to improving user experience. The application relates to the technical field of voice recognition.

The video decoding method according to the present invention includes the following steps: generating a merging candidate list for a first block; selecting any one of the merging candidates included in the merging candidate list; and performing motion compensation on the first block based on the motion information of the selected merging candidate. At this time, based on the number of spatial merging candidates and temporal merging candidates included in the merging candidate list, inter-frame merging candidates included in the inter-frame motion information list can be added to the merging candidate list.

A video decoding method includes the steps of: generating a merge candidate list for a first block; selecting one among merge candidates included in the merge candidate list; and performing motion compensation for the first block based on motion information of the selected merge candidate. At this point, an inter-region merge candidate included in an inter-region motion information list may be added to the merge candidate list based on the number of spatial merge candidates and temporal merge candidates included in the merge candidate list.

Embodiments of the invention describe decoders for decoding a digital time-varying signal from a data stream using a parametrizable function. Further embodiments describe encoders for encoding a digital time-varying signal into a data stream using a parametrizable function. Further embodiments comprise methods, data streams and computer programs.

A signal processing device is connected to an optical transmitter that transmits an Ethernet signal by optical modulation based on a data signal. The signal processing device includes a mapper unit configured to map a plurality of client signals into a frame signal, an encoder configured to encode the frame signal to generate blocks of a number of bits corresponding to the Ethernet signal, and a signal outputter configured to generate the data signal from the blocks and outputs the data signal to the optical transmitter.

The present invention provides embedded coding of a monaural audio signal and audio signals of multiple channels in which the algorithm delay in stereo coding / decoding is not greater than the algorithm delay in monaural coding / decoding. A coding device (100) codes the audio signals of multiple channels in units of frames. A stereo coding unit (110) obtains and outputs a stereo code representing a feature parameter which indicates a feature regarding inter-channel difference between the audio signals of multiple channels. A down-mixing unit (150) obtains, as a down-mixed signal, a signal in which the audio signals of multiple channels are mixed. A monaural coding unit (120) obtains a monaural code by coding the down-mixed signal using a coding scheme which includes a process of multiplying overlapped parts between frames by a window function, and outputs the monaural code. An additional coding unit (130) obtains an additional code by coding a signal in a overlapped section between a current frame and the immediately subsequent frame of the down-mixed signal, and outputs the additional code.

Provided is a technique for accurately estimating a scene even when the number of input signals increases. A scene estimation method includes: when S is the number of scenes and M is the number of input acoustic signals, an acoustic signal encoding step of generating, by a scene estimation device, an integrated acoustic feature amount from an m-th input acoustic signal (m=1, . . . , M) and a position where the m-th input acoustic signal is acquired (hereinafter referred to as an m-th input acoustic signal acquisition position) (m=1, . . . , M); and a scene selection step of selecting, by the scene estimation device, a scene from which M input acoustic signals are acquired from among S scenes, using the integrated acoustic feature amount.

The present invention relates to a method for generating coding tables for sensor signals of a vehicle, comprising: detecting the occurrence frequencies of the sensor signals; dividing the sensor signals into different levels according to the occurrence frequencies, wherein the numbers of the levels correlate with the number of coding bits, whereby with increasing occurrence frequency the numbers of the levels become smaller and the corresponding number of coding bits decreases;Assigning binary codes to the sensor signals, wherein the binary codes have a single middle bit position, as well as front bit positions and back bit positions, wherein a first bit value is written into the middle bit position, the number of front bit positions representing the level, and a second bit value is written, wherein the number of back bit positions depends on the number of front bit positions, and the value of the sensor signal is represented by means of the bit value of the back bit positions; generating a coding table to establish a correspondence between the sensor signals and the binary codes. The present invention further relates to a corresponding coding method, a corresponding decoding method, a corresponding computer program product, and a corresponding processing device. This makes it possible to reduce the internal memory required for recording the sensor signals.

Provided are a method and apparatus for improving encoding / decoding efficiency by partitioning a picture into a plurality of tiles or a plurality of slices.SOLUTION: The method includes partitioning a current picture into a plurality of tiles, decoding partition information indicating a slice type and whether a rectangular slice is applied, when the partition information indicates that the rectangular slice is applied, determining the number of slices included by the picture based on information of the number of slices, determining the number of tile columns included by the slice based on width information indicating a value subtracting 1 from the number of tile columns included by the slice, and determining the number of tile rows included by the slice based on height information of the slice. Whether to decode width information of a slice from a bitstream is determined according to whether a top-left tile of the slice is included in a rightmost tile column of a plurality of tile columns, and when the top-left tile of the slice is included in the rightmost tile column, decoding of the width information of the slice from the bitstream is omitted and a value thereof is set to 0.SELECTED DRAWING: Figure 33

Disclosed herein are various example systems, methods, and compositions, for extremely high-resolution in situ spatial analysis of a sample, with particular applicability to biological materials, by strategically multiplexing a. plurality of different imaging techniques. For instance, certain inputs can be configured to elicit multiple different types of output signals from the sample simultaneously, each of which encodes a different attribute of the sample. These various outputs, once detected, decoded, and assembled, provide for a more- robust analysis than their individual techniques, i.e., if performed sequentially. As just one illustrative example, the infrared light involved in photothermal-infrared (PI) microscopy can also be used, to simultaneously trigger fluorescence-encoded infrared (FEIR) excitation within the sample. Pegging the excitation signals to specific biomarker targets can drastically enhance the combined 3D imagery' that results. Additional techniques may be integrated (i.e., higher-order multiplexing) to resolve the imagery even further.

The present invention discloses a method for encoding / decoding a video signal and an apparatus for the method. More specifically, a method for decoding a video signal comprises generating a residual block of a current block by performing entropy decoding on the video signal; if size of the current block is smaller than a predetermined first size, parsing a transform skip flag which indicates whether a transform skip is applied to the current block; determining whether to parse a primary transform flag which indicates whether a primary transform is applied to the current block; if it is determined to parse the primary transform flag, parsing the primary transform flag; and if the primary transform flag indicates that a primary transform is applied to the current block, generating a primary inverse transformed transform block of the current block by performing a primary inverse transform to the residual block.

The method comprises: obtaining a mixed-format audio signal (S3101), the mixed-format audio signal comprising a plurality of channels; determining a first parameter of the mixed-format audio signal and / or an energy parameter of one or more channels of the plurality of channels (S3103); performing bit allocation on the plurality of channels according to the first parameter of the mixed-format audio signal and / or the energy parameter of the plurality of channels to obtain a bit allocation parameter (S3104); encoding the plurality of channels according to the bit allocation parameter to obtain a channel signal encoding parameter (S3105); and writing the bit allocation parameter and the channel signal encoding parameter into a bitstream (S3106). The method can solve the problem that a coding and decoding method in the prior art cannot reconstruct a desired and most suitable sound field.

1. Name of the designed product: encoder (X002A). 2. Use of the designed product: used for signal encoding and conversion. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The video decoding method according to the present application includes the steps of generating a merge candidate list for a first block, selecting any one of merge candidates included in the merge candidate list, and performing motion compensation on the first block based on motion information of the selected merge candidate. At this time, inter merge candidates included in an inter motion information list can be added to the merge candidate list based on the number of spatial merge candidates and temporal merge candidates included in the merge candidate list.

A signal encoding and decoding protocol to transmit both clock information and a data payload in a single line is disclosed. Data may be encoded in a unipolar non-return-to-zero line in which an initial pulse width determines a clock frequency, followed by a series of pulses indicating the data payload. Each clock transition following an initial synchronization pulse indicates a data bit in which the value of the bit is determined in relation to the previous bit. Edge information may indicate a change in bit value from the previous bit. If the transmission signal remains at the same level for a subsequent clock period, the bit value remains the same.

The present disclosure relates to a tinnitus suppression device, method, system and computer program. In some aspects, a tinnitus suppression device comprises a receiver module configured to receive sound signals, a processing module operably connected to a memory and to the receiver module, and a neurostimulation module operably connected to the processing module. In some aspects, the processing module and the neurostimulation module may be configured to determine a received sound signal that corresponds to a template stored in the memory, that is above a preconfigured threshold, preferably above a preconfigured threshold which is specific for the individual, or both. A multi-channel neurostimulation signal encoding the determined sound signal may be generated and applied to a neurostimulation device of the individual that may be configured to directly stimulate afferent sensory neurons of the central nervous system of the individual and thereby to elicit, for each channel of the neurostimulation signal, one or more non-auditory, preferably somatosensory, perceptions in a cortex area of the individual.

Embodiments of the disclosure provide a speech signal encoding and decoding methods and apparatuses, an electronic device, and a computer-readable storage medium. The decoding method includes: obtaining a bitstream including a first substream, and the first substream being a bitstream obtained by encoding a low-frequency subband signal of an original speech signal by using a first encoding method; and performing signal reconstruction based on the first substream in a case that the bitstream includes no second substream, to obtain a reconstructed speech signal; or performing signal reconstruction based on the first substream and at least one second substream in a case that the bitstream includes the at least one second substream, to obtain a reconstructed speech signal, each second sub stream being obtained by encoding a high-frequency subband signal of the original speech signal, and the encoding being performed by using a second encoding method corresponding to the each second substream.

The present disclosure relates generally to signal encoding for value documents. One aspect of the technology relates to authentication of value documents comprising line art patterns. In one example, authentication relies of detection of signals encoded within the line art, and expected frequency domain analysis of the line art. Other combinations are described as well. For example, authentication may rely on detection of signals encoded within encoded and then printed documents, expected frequency domain characteristics encoded signals, presence or absence of halftoning, a color check and / or trained classifier analysis. Other aspects, technology, claims and combinations are described as well.

The application provides a railway project state joint simulation and control signal generation method, device and system, for each time step under each exogenous factor simulation path, obtaining multi-source data under the current time step; according to the preset DAG topology sequence, scheduling multiple sub-models to perform cascade calculation, outputting adjustment amount of each dimension; then calculating the comprehensive constraint scalar and the constraint load ratio; performing interval range comparison on the comprehensive constraint scalar to generate control signal coding; and performing the forward-backward algorithm of the hidden Markov state space model to infer the hidden state coding of the current time step; after all the time steps of all the simulation paths are traversed, starting the random dynamic programming optimal stop model to solve backward recursively to determine the optimal path distribution; outputting structured data containing the control signal coding and the optimal path distribution; the application can improve the numerical stability of the state joint simulation and the accuracy of the output control signal.