89 results about "Crosstalk cancellation" patented technology

A computer-implemented method for generating crosstalk cancellation (CTC) filters for a reverberant acoustic environment having multiple audio zones, the method comprising determining, based on a CTC simulation model of an acoustic environment, a first set of frequency responses for respective positions proximate to one or more speakers located in the acoustic environment, and a second set of frequency responses for respective listening positions in the acoustic environment, generating, based on the first set of frequency responses and the second set of frequency responses, an acoustic environment transfer function matrix for the acoustic environment, and generating, based on the acoustic environment transfer function matrix, a set of CTC filters for a set of speakers in the acoustic environment.

The invention relates to an adaptive crosstalk cancellation circuit agile design method and device, and the method comprises the steps: obtaining a circuit design index of a target circuit schematic diagram inputted by a target user; sending the circuit design indexes to a preset generator, so that the generator calculates a plurality of parameters in the target circuit schematic diagram according to a preset parameter automatic calculation algorithm; and substituting the plurality of parameters into the target circuit schematic diagram to convert the plurality of parameters into a netlist file, a layout file and a tester corresponding to the target circuit schematic diagram through a preset TED built-in engine, and constructing the target circuit schematic diagram according to the netlist file, the layout file and the tester. Therefore, the problems that in the prior art, crosstalk exists in a Chiplet chip parallel interface circuit, and the design efficiency, flexibility and expandability are poor are solved.

The invention provides a bridge circuit and a switching power supply, the bridge circuit comprises at least one bridge arm and at least one anti-crosstalk circuit, the bridge arm comprises two driving switching tubes connected in series, the anti-crosstalk circuit comprises a negation circuit and a clamping switching tube, a first end of the driving switching tube is connected with a controller and a first end of the clamping switching tube, and a second end of the driving switching tube is connected with a second end of the negation circuit. The second end of the driving switch tube is connected with the second end of the clamping switch tube, and the second end of the driving switch tube is connected with the negative electrode of the diode in the driving switch tube. The first end of the driving switch tube and the negation circuit are used for receiving a driving signal sent by the controller, and the negation circuit is used for negating the driving signal and sending the negated driving signal to the third end of the clamping switch tube, so that the clamping switch tube is kept on when the driving switch tube is turned off. By adopting the bridge circuit, the two ends of the driving switch tube can be clamped in time to absorb crosstalk, the crosstalk elimination effect is good, and the working reliability of the switch tube in the bridge circuit is improved.

Example embodiments relate to audio processing. According to an example embodiment, there is provided a method for processing an input audio signal according to spatial metadata to play back the spatial audio signal in a device according to at least one sound reproduction characteristic of the device, the method comprising: obtaining the input audio signal and the spatial metadata; obtaining the at least one sound reproduction characteristic of the device; rendering, in accordance with the spatial metadata, a first portion of the spatial audio signal using a first type of playback process applied to the input audio signal, where the first portion includes a sound direction within a front region of the spatial audio signal; and rendering a second portion of the spatial audio signal using a second type of playback process applied by the input audio signal in accordance with the spatial metadata and in accordance with the at least one sound reproduction characteristic, where the second portion includes sound directions not included in the first portion, and where the second portion includes sound directions not included in the first portion. The second type of playback process is different from the first type of playback process and involves a crosstalk cancellation process.

Embodiments of the invention relate to a method and device for adaptive Head Related Transfer Function (HRTF) individualization for binaural rendering through headphones, earphones or crosstalk-cancelled speakers. The Adaptive HRTF individualizer (AHI) can simplify the complicated problem of custom tailoring an HRTF to a user via a GUI (graphical user interface), and can incorporate a single controller (e.g. a slider) that controls the selection of filters that allow the listener to virtualize sound sources at desired locations through any binaural rendering system. The slider allows cycling through processed HRTFs that are a composite of deconstructed measured filters with reconstructed cues such as interaural time difference (ITD) and interaural level difference (ILD). The deconstructed filters are analyzed and pre-processed enabling a smooth interpolation of the filters in the time domain prior to the addition or reconstruction of cues into the filter itself. Expanding this procedure for a single location into multiple locations enables a customized and accurate listening experience for multichannel content virtualized through any binaural rendering system. This can be done for a multitude of speaker locations to customize and render any surround sound content.

Methods, systems, and devices for crosstalk cancellation for signal lines are described. In some examples, a device (e.g., a host device or a memory device) may generate a first signal and may invert the first signal to obtain an inverted first signal. The device may obtain a second signal based on attenuating a first range of frequencies of the inverted first signal and a second range of frequencies of the inverted first signal, where the first range of frequencies is below a first threshold frequency and the second range of frequencies is above a second threshold frequency that is greater than the first threshold frequency. The device may transmit the first signal via a first signal line of a set of signal lines and the second signal line via a second signal line of the set of signal lines.

The invention discloses a loudspeaker playing signal generation method and a related device, and relates to the field of players, and the method comprises the steps: carrying out the signal delay processing of audio frame data, reversing a delayed audio signal, obtaining an opposite signal, carrying out the filtering processing of the opposite signal, calculating the maximum loudness value of the filtered audio frame data, and obtaining the maximum loudness value of the filtered audio frame data. If the maximum loudness value is greater than the threshold value, storing the filtered audio frame data until the maximum loudness value is less than the threshold value to obtain audio frame storage data; respectively accumulating odd-numbered items and even-numbered items of the left channel audio frame storage data, respectively accumulating odd-numbered items and even-numbered items of the right channel audio frame storage data, and accumulating even-numbered items of the right channel audio frame storage data; the left channel odd number term signal and the right channel even number term signal are added, and the right channel odd number term signal and the left channel even number term signal are added, thereby generating a loudspeaker playing signal. According to the invention, the audio quality can be improved while crosstalk elimination is ensured.

The embodiment of the invention provides an audio playing method, electronic equipment, a readable storage medium and a vehicle, a vehicle cabin comprises an independent sound area, the independent sound area comprises sound production units, and the method comprises the following steps: according to a position relationship between the sound production units of a to-be-played audio signal, the sound production units of the to-be-played audio signal are used for playing the to-be-played audio signal; performing crosstalk elimination filtering processing on the audio signal to obtain a target audio signal; and sending the target audio signal to the corresponding sound production unit so as to play the target audio signal through the sound production unit. According to the embodiment of the invention, crosstalk elimination filtering processing can be adaptively performed on the audio signal according to the position relation between the sound production units of the audio signal to be played, so that the problem of mutual interference between the audio signals when different sound production units play the audio signals is solved, and the audio quality of each independent sound area is optimized; and the audition experience of passengers is ensured.

The embodiment of the present application provides a near-end crosstalk cancellation circuit, including: a first chip and a first crosstalk cancellation module; the transmitting end of the first chip is used to connect with the receiving end of the second chip to send a first signal to the second chip, the receiving end of the first chip is used to connect with the transmitting end of the second chip to receive a second signal sent by the second chip, and the first crosstalk cancellation module is used to connect between the transmitting end of the first chip and the receiving end of the first chip to invert and attenuate the first signal to eliminate the first near-end crosstalk of the first signal to the second signal. In this technical solution, a crosstalk cancellation module is set between the transmitting end and the receiving end of the chip to eliminate the near-end crosstalk caused by the transmitting end to the receiving end.

The embodiments herein are directed to technologies for crosstalk cancellation structures. One semiconductor package includes conductive metal layers separated by insulating layers, the conductive metal layers for routing signals between external package terminals and pads on an integrated circuit device. Signal lines formed in the conductive metal layers have electrode structure (capacitor electrode-like structures) formed for at least adjacent signaling lines of the package terminals. Two of the electrode structures from the adjacent signaling lines are formed opposite each other on different metal layers.

Various embodiments disclose a computer-implemented method comprising: determining a location and orientation of a user in an environment; determining a subset of closest points in a dimension map based on the location and orientation of the user, each point being associated with a corresponding transfer function; determining a respective weight for each transfer function associated with the subset of closest points based on a distance between each point in the subset of closest points and the position and orientation of the user in the dimension map; determining at least one crosstalk cancellation filter by combining each of the transfer functions associated with the subset of closest points based on the respective weights; generating a plurality of audio signals for a plurality of loudspeakers based on the at least one crosstalk cancellation filter; and transmitting the plurality of audio signals to the plurality of loudspeakers for output.

A radar-based sensing and communication apparatus, a method, and a device, relating to the technical field of electronics, and used for solving the problem of interference caused by a crosstalk signal (S2) in a radar-based sensing and communication apparatus, thereby improving the performance of the apparatus. The apparatus comprises: a first transmit link (21) for transmitting a transmit signal (S1); a loopback link (22) for receiving an input signal and outputting a first crosstalk cancellation signal, the input signal being the transmit signal (S1) or a baseband signal corresponding to the transmit signal (S1); and a first receive link (23) for receiving the first crosstalk cancellation signal and a receive signal, the receive signal comprising the crosstalk signal (S2) corresponding to the transmit signal (S1) and an echo signal obtained when the transmit signal (S1) is reflected by an obstacle. The phase of the first crosstalk cancellation signal is opposite to that of the crosstalk signal (S2), and the absolute value of the difference between the amplitude of the first crosstalk cancellation signal and the amplitude of the crosstalk signal (S2) is less than a preset value.

The application discloses a kind of based on digital encoding multi-channel data transmission crosstalk elimination method and device, the application based on digital encoding multi-channel data transmission crosstalk elimination method includes that each three-way signal is converted to four-way signal for each channel needing sending multiple parallel signals of sending party to crosstalk elimination, and the multiple signals obtained after conversion are combined and sent into channel to carry out data transmission;For the signal received by each channel, each four-way signal is restored to three-way signal to obtain original data;The device of the application includes the encoder for converting the three-way signal needing sending of sending party to four-way signal and the decoder for restoring the four-way signal received by receiving party to three-way signal.The application aims at the data transmission of multi-channel digital signal to ensure efficient premise and realize maximum crosstalk elimination.

The present disclosure relates to a computer-implemented method of generating audio signals. A computer-implemented method of generating audio signals for a low frequency unit array and a high frequency unit array housed in a computing device is disclosed, the method comprising: receiving a plurality of input audio signals to be reproduced by the low frequency unit array and the high frequency unit array at a respective plurality of control points in an acoustic environment; and generating a respective output audio signal for each low frequency unit and each high frequency unit by applying one or more crosstalk cancellation algorithms to the plurality of input audio signals to control a pressure at each of the plurality of control points, wherein the low frequency unit array comprises two low frequency units and the high frequency unit array comprises at least three high frequency units.

This invention provides a low-crosstalk signal demodulation device and method for fiber optic laser communication, belonging to the field of fiber optic communication technology. The device includes a fiber optic signal input port, an optical circulator, a polarization beam splitter / combiner module, a balanced photodetector unit, a low-noise amplification and quadrature demodulation module, an adaptive crosstalk cancellation unit, a MIMO equalization and decision unit, and a digital signal output port, connected in series according to the signal flow direction. It also includes a crosstalk monitoring and feedback unit bidirectionally connected to the low-noise amplification and quadrature demodulation module, the adaptive crosstalk cancellation unit, and the MIMO equalization and decision unit. This invention, employing the aforementioned low-crosstalk signal demodulation device and method for fiber optic laser communication, overcomes the limitations of traditional single-domain crosstalk suppression. Through the synergistic effect of optical path, circuit, and algorithm layers, it effectively suppresses crosstalk caused by multi-channel multiplexing, polarization mode dispersion, and backscattering, significantly improving demodulation accuracy, anti-interference capability, and system stability.

The invention relates to three-dimensional audio source spatialization. Techniques for delivering audio in a telepresence system include specifying a frequency threshold below which crosstalk cancellation (CC) is used and above which VBAP is used. In some embodiments, such a frequency threshold is between 1000 Hz and 2000 Hz. Further, in some embodiments, the improved techniques include modifying a VBAP for more than three loudspeakers by forming an overdetermined system to determine amplitude weights for all loudspeakers at a time.

The invention discloses a multi-channel data transmission crosstalk elimination method and device based on digital coding, and the method comprises the steps: converting every three paths of signals into four paths of signals for crosstalk elimination by a sender for multi-path parallel signals needing to be transmitted by each channel, multiple paths of signals obtained after conversion are combined and then sent to a channel for data transmission; the receiver restores every four paths of signals into three paths of signals according to the signals received by the channels to obtain original data; the device comprises an encoder and a decoder, wherein the encoder is used for converting three-way signals needing to be sent by a sender into four-way signals, and the decoder is used for restoring the four-way signals received by a receiver into the three-way signals. The invention aims to realize crosstalk elimination to the greatest extent on the premise of ensuring high efficiency of data transmission of multi-channel digital signals.

The present invention discloses a crosstalk cancellation method, apparatus, audio device and computer-readable storage medium, belonging to the technical field of audio processing. The crosstalk cancellation method provided by the present invention includes the following steps: obtaining a target transfer function when a user wears a near-ear open audio device; performing crosstalk cancellation processing on an input signal received by the near-ear open audio device according to the target transfer function to obtain an output signal; playing the output signal through a speaker of the near-ear open audio device, so that both ears of the user wearing the near-ear open audio device receive a sound signal consistent with the input signal. The present invention provides a crosstalk cancellation method for near-ear open audio devices, enabling the listening effect when the sound played by the near-ear open audio device reaches both ears of the user to be the same as that when wearing headphones, and solving the problem of sound crosstalk existing in the use of near-ear open audio devices.

The invention discloses an inter-core-particle interconnection 5b-6b crosstalk cancellation transceiver, a chip and equipment, the inter-core-particle interconnection 5b-6b crosstalk cancellation transceiver comprises a transmitter, a receiver and a clock module, the transmitter comprises an encoder used for realizing inter-channel bit smooth coding, the receiver comprises a clock module, and the clock module comprises a clock module. The receiver comprises a decoder used for realizing inter-channel bit smooth decoding, inter-channel bit smooth coding refers to performing inter-channel bit smooth coding on 5-bit binary data to obtain 6-bit coded data, and inter-channel bit smooth decoding refers to performing inter-channel bit smooth decoding on the 6-bit coded data to obtain 5-bit binary data. The present invention is directed to combining crosstalk cancellation coding with channel characteristics to maximize bandwidth and edge density while maintaining signal integrity, improving the ability to maintain signal integrity in high density interconnects by reducing bit transitions between channels to reduce far-end crosstalk (FEXT) between lines and to improve crosstalk suppression performance.

Various embodiments disclose a computer-implemented method comprising determining a position and an orientation of a user in an environment, determining, based on the position and the orientation of the user, a subset of nearest points in a dimensional map, each point is associated with a corresponding transfer function, determining, based on the distance between each point in the subset of nearest points to the position and the orientation of the user in the dimensional map, a respective weight for each transfer function associated with the subset of nearest points, determining at least one crosstalk cancellation filter by combining each of the transfer functions associated with the subset of nearest points based on the respective weights, generating a plurality of audio signals for a plurality of loudspeakers based on the at least one crosstalk cancelation filter, and transmitting the plurality of audio signals to the plurality of loudspeakers for output.

Connectors to a set of differential transmit signal contacts for multiple lanes of a communications link may incur signal crosstalk between adjacent lanes. Similar signal crosstalk at the other end of the communications link may be incurred by connectors to a set of differential receive signal contacts. The connector arrangement may provide opposite polarities to the signal crosstalk contributions at opposite ends of the link, creating a substantial reduction in crosstalk.

The invention relates to a camera channel crosstalk elimination device and method based on a color primitive hologram, and belongs to the technical field of color digital holography. The device comprises a red laser, a green laser, a blue laser, a reflector, a beam splitter, a beam expander, a Fourier lens and a dichroic sheet. A red laser beam, a green laser beam and a blue laser beam are split into three pairs of object light and reference light, and the object light and the reference light are expanded and collimated into plane waves; the red, green and blue object light and the reference light are interfered, and red, green and blue three-element holograms with different frequencies and angles are generated on a recording plane of the color camera by designing different included angles between the object light and the reference light and are recorded by the camera at the same time; the method comprises the following steps: performing fast Fourier transform on each color channel of a camera, separating the intensities of red, green and blue element holograms with different frequencies and angles in a frequency spectrum, extracting the intensity relationship of the red, green and blue element holograms in the frequency spectrum of each color channel to construct a crosstalk matrix, and eliminating channel crosstalk through matrix operation.

An audio device for providing an improved three-dimensional sound experience by means of the generated soundfield is provided. The audio device comprises a housing, which has an elliptical torus shape and a plurality of loudspeakers, and a processing circuitry. The processing circuitry is configured to process a plurality of input signals (L, R, UL, UR) in a manner, which enables the plurality of loudspeakers to form at least a first (DH1, DH3) and second (DH2) horizontal dipoles for crosstalk cancellation within at least two different frequency ranges (HF, MF), and to form at least a first vertical dipole (DV1, DV3) for sound elevation of the soundfield. Hereby, a desired frequency ranges (HF, MF) may be adjusted using an appropriated distance of the plurality of loudspeakers.

A computer-implemented method for generating crosstalk cancellation (CTC) filters for a reverberant acoustic environment having multiple audio zones, the method comprising determining, based on a CTC simulation model of an acoustic environment, a first set of frequency responses for respective positions proximate to one or more speakers located in the acoustic environment, and a second set of frequency responses for respective listening positions in the acoustic environment, generating, based on the first set of frequency responses and the second set of frequency responses, an acoustic environment transfer function matrix for the acoustic environment, and generating, based on the acoustic environment transfer function matrix, a set of CTC filters for a set of speakers in the acoustic environment.

The invention discloses a sound field expansion method, an audio device and a computer readable storage medium, and relates to the technical field of audio processing, and the method comprises the steps: obtaining a target transfer function between a test audio device at an expansion target position and two ears of a user, and obtaining personalized acoustic transmission data of a target user, the personalized acoustic transmission data comprises at least one head related transfer function HRTF generated based on the personal auditory physiological data of the target user; rendering the original audio according to the personalized acoustic transmission data to obtain personalized audio; and performing crosstalk elimination processing on the personalized audio according to the target transfer function to obtain a target audio, and playing the target audio. While the sound field is effectively expanded, the crosstalk is reduced, and the sound quality is guaranteed.

The present invention discloses a signal processing method for improving the positioning performance of a two-speaker crosstalk cancellation system. The method includes the following steps: obtaining the azimuth angles of the left and right speakers in the two-speaker crosstalk cancellation system, and calculating the average amplitude of the input signals of the left and right speakers at any low-frequency band under each target angle; obtaining the average perceived angle under free-field conditions based on the speaker azimuth angle and the target angle; calculating the amplitude that needs to be increased for the input signals of the left and right speakers at this low-frequency band under the condition that the target angle is equal to the average perceived angle; adjusting the low-frequency amplitude of the input signals of the left and right speakers, and performing spectral smoothing on the highest frequency of the input signals of the left and right speakers at this low-frequency band. The present invention can perform corresponding signal processing according to the speaker arrangement angle and the target angle of the crosstalk cancellation system, so as to solve the problem of the decline in the system positioning performance caused by the mismatch between the calculated crosstalk cancellation system and the actual application environment.

A method for operating a multi-channel acousto-optic modulator includes obtaining (S20) print data for a plurality of channels of the multi-channel acousto-optic modulator. The radio frequency signal is modulated (S30) for each of the plurality of channels based on the print data. The modulated radio frequency signal is provided (S40) via the electrical input connector to a corresponding transducer of the multi-channel acousto-optic modulator. For at least one channel, the modulation of the radio frequency signal comprises crosstalk cancellation (S32). Wherein the modulated radio frequency signal is compensated by a modulated radio frequency signal of at least electrically adjacent channels among the electrical input connectors scaled by a predetermined factor and phase shifted by a predetermined phase difference. A method for calibrating a multi-channel acousto-optic modulator, a control unit for a multi-channel acousto-optic modulator and a pattern generator are also presented.

Semiconductor devices, packages, and structures are described. A semiconductor structure can include a plurality of BGA pads, where a plurality of BGA balls are attached to a first surface of the plurality of BGA pads. The semiconductor structure can further include a layer of dielectrics deposited on a second surface of the plurality of BGA pads. The second surface can be opposite from the first surface. The semiconductor structure can further include at least one floating structure deposited on the layer of dielectrics. The at least one floating structure and at least two of the plurality of BGA pads can form at least two capacitors that are connected within the interposer.

The invention discloses a microseismic crosstalk noise elimination method and device based on cross-correlation. The method comprises the following steps: S1, inputting microseismic monitoring data; s2, calculating a correlation coefficient of each channel of monitoring data, and constructing a standard crosstalk set based on each channel of correlation coefficient and a crosstalk identification threshold; s3, calculating a maximum crosstalk channel, and obtaining a standard crosstalk channel based on the correlation coefficient of the maximum crosstalk channel and the standard crosstalk set; s4, calculating a correlation coefficient of the standard crosstalk channel and the data, and constructing a crosstalk elimination factor based on the correlation coefficient of the standard crosstalk channel and the data; s5, constructing crosstalk of each channel through the standard crosstalk channel and the crosstalk elimination factor, and eliminating the crosstalk of each channel from the original data of each channel to obtain new microseism monitoring data; and S6, repeatedly executing the steps S2-S5 on the new micro-seismic monitoring data until the standard crosstalk set cannot be constructed, and outputting the micro-seismic monitoring data after crosstalk elimination. According to the invention, the crosstalk of the microseism monitoring data can be automatically eliminated.

Semiconductor devices are described herein. The semiconductor device may include a semiconductor package including a plurality of circuits and a plurality of connectors configured to facilitate signal transmission between the semiconductor package and an apparatus when the semiconductor package is connected to the apparatus via the plurality of connectors. At least a first connector of the plurality of connectors may be embedded with a capacitor. A capacitor embedded in the first connector may be connected to a second connector of the plurality of connectors.