68 results about "Distortion reduction" patented technology

The invention relates to an in-ear earphone with a caisson structure, and the earphone comprises a front cavity shell which is provided with a front cavity and a sound outlet communicated with the front cavity, and the sound outlet is sleeved with an earcap; the rear cavity shell is provided with a rear cavity communicated with the front cavity, a caisson structure part is arranged in the rear cavity and comprises an upper-layer caisson structure, a middle-layer caisson structure and a lower-layer caisson structure which are sequentially connected, the middle-layer caisson structure is located on the outer side of the upper-layer caisson structure, and the diameter of the middle-layer caisson structure is larger than that of the upper-layer caisson structure; the lower-layer caisson structure is located outside the middle-layer caisson structure and is larger than the middle-layer caisson structure in diameter; the sound production unit is arranged in the front cavity and the rear cavity; the caisson structure part is arranged in the rear cavity, the cavity is formed between the caisson structure part and the sound production unit, upward diffusion of sound is avoided, the sound gathering effect is achieved by scientifically applying the acoustic phase inversion hole principle, and meanwhile in order to enhance low-frequency response and improve sound quality, the phase inversion hole enables the bass to be cleaner and reduces distortion by reducing back wave reflection of the bass unit.

Presented herein are techniques for reducing distortions in noise cancellation systems, including but not limited to body noise cancellation filtering systems. In one aspect, a method is provided. The method comprises: receiving at least one input signal at a noise cancellation system; and processing the at least one input signal using the noise cancellation system to generate a noise cancellation output signal, wherein the noise cancellation system is controlled by a variable filtering strength parameter that is a function of a level of the at least one input signal.

In at least one aspect, an inductive position sensor comprising a target. The inductive position sensor can include a stator including an excitation coil being inductively coupled to the target, and a receiver coil including a first loop connected in series with a second loop, and inductively coupled with the target such that a receiver coil voltage is generated at the receiver coil. The second loop can be offset, on the stator and relative to the first loop, by a portion of a harmonic period corresponding with a harmonic for nullification in the receiver coil voltage. The inductive position sensor can include a control unit configured to receive a plurality of receiver coil voltages including the receiver coil voltage, the control unit configured to generate an angular position signal based on the plurality of receiver coil voltages.

The invention provides a loudspeaker and electronic equipment, and the loudspeaker comprises a support which is provided with an accommodation cavity with openings at two sides; the vibration system is connected to the support and covers the opening in one side of the containing cavity. The driving system is connected to the support and covers the opening in the other side of the containing cavity, and the driving system is used for driving the vibration system to vibrate so as to generate sound waves; the driving system comprises a phase inversion plug, the phase inversion plug is provided with at least one phase inversion channel, one end of the phase inversion channel is a sound inlet hole, and the sound inlet hole is located in the accommodating cavity; and the other end is a sound outlet hole which is located outside the accommodating cavity. According to the loudspeaker, the phase inversion channel is arranged on the phase inversion plug, and the sound in the accommodating cavity is transmitted to the outside of the loudspeaker through the phase inversion channel, so that the sound is superposed with the sound wave on the surface of one side, far away from the driving system, of the vibration system, a low-frequency enhancement effect is formed, a fuller and more powerful bass effect is realized, distortion is reduced, and the overall sound quality is improved. And the bass cut-off frequency is effectively reduced, so that the playback effect of the loudspeaker is better.

A device may be configured to reduce distortion in compressed feature data according to one or more of the techniques described herein. In one example, a bitstream including compressed feature data may be decoded according to the video coding standard. A quantization parameter or target bit rate and a picture type may be determined for a decoded picture corresponding to a channel. A distortion reduction engine may be selected based on the quantization parameter and the picture type. The distortion reduction engine may be applied to reduce distortion.

The invention discloses a large-model-driven digital human real-time interaction method, which relates to the technical field of digital humans and comprises the following steps: S1, inputting a question text through a man-machine conversation front end and sending the question text to a large-model rear end; s2, the large model rear end performs large model reasoning according to the question text and the knowledge base, generates an answer abstract and a complete answer, and sends the answer abstract and the complete answer to the digital human rear end and the man-machine conversation front end for display; s3, the classifier generates a plurality of classification labels according to the answer abstract; the digital human rear end retrieves and matches a preset video library according to the classification label to obtain a target preset video, and sends the target preset video to the man-machine conversation front end; s4, the digital human processing engine generates a digital human abstract video according to the answer abstract, and pushes the video to the player; and the player sequentially plays the target preset video and the digital human abstract video. And finally, smoother digital human real-time question and answer interaction experience is realized, and distortion experience is reduced.

An external chip driving system includes a decision circuit, multiple first adjustable enhancement circuits, multiple second adjustable enhancement circuits, a pull-up circuit, and a pull-down circuit. The decision circuit outputs first and second decision signals based on a frequency signal and an input signal. In response to the first and second decision signals and one of the first selection signals, each of the first adjustable enhancement circuits generates a first control signal. In response to the first and second decision signals and one of the second selection signals, each of the second adjustable enhancement circuits generates a second control signal. Because the signal amplitude attenuates and becomes distorted during high-speed data transmission, in this disclosure, the first driver in the pull-up circuit is activated in response to the corresponding first control signal, and the second driver in the pull-down circuit is activated in response to the corresponding second control signal, thereby increasing the slew rate of the output signal and reducing the distortion of the output data.

Described herein are switches with asymmetrical anti-series varactor pairs to improve switching performance. The disclosed switches can include asymmetrical varactor pairs to reduce distortions. The asymmetry in the varactor pairs can be associated with geometry of each varactor in the pair. The disclosed switches can stack both symmetrical and asymmetrical varactor pairs. The disclosed switches with asymmetrical anti-series varactor pairs can be configured to improve both H2 and H3 simultaneously.

To reduce uncomfortable feeling given to a user when switching between display of a part of an image and display of a part of an image obtained by performing distortion correction of the image.SOLUTION: An electronic device includes: acquisition means which acquires a first image and a second image which is an image obtained by subjecting the first image to geometric conversion processing for distortion reduction; switch means which switches a display mode between a first mode which displays a range of a part of the first image on a display region and a second mode which displays a range of a part of the second image on the display region; and adjustment means which, when the display mode is switched, adjusts a display position of an image to be displayed in the display region after the display mode is switched so that an object which appears at a first position of the display region before the display mode is switched appears at the first position after the display mode is switched.SELECTED DRAWING: Figure 7

Embodiments include an optical system that may be included in a waveguide display. A waveguide apparatus according to some embodiments includes an in-coupler grating having a first grating vector G1 substantially perpendicular to a first axis, x; a first eye pupil expander grating having a second grating vector G2 and a first angle ΦG with respect to the first axis; a second eye pupil expander grating having a third grating vector G3 and an angle substantially equal to 90°+ΦG with respect to the first axis; and an out-coupler grating having a fourth grating vector G4 substantially perpendicular to the first axis. Example embodiments describe relationships among the grating vectors, the angle ΦG, and associated parameters to achieve a satisfactory field of view while reducing distortion.

The invention provides a piezoelectric MEMS (Micro Electro Mechanical System) loudspeaker and a preparation method thereof. The piezoelectric type MEMS loudspeaker comprises a substrate supporting layer, a piezoelectric layer and a piezoelectric layer, the multi-cantilever piezoelectric diaphragm array is arranged above the substrate supporting layer, and one side of the edge of the multi-cantilever piezoelectric diaphragm array is fixedly connected with the substrate supporting layer; and the plurality of reinforcing ribs are arranged below the multi-cantilever piezoelectric diaphragm array, are formed by etching SOI wafer substrate silicon and an SOI wafer buried oxide layer, and form an integrated structure with the multi-cantilever piezoelectric diaphragm array to improve the sound pressure level frequency response characteristic of the multi-cantilever diaphragm piezoelectric MEMS loudspeaker. Compared with a piezoelectric MEMS loudspeaker without a reinforcing rib design, the reinforcing rib design suppresses the partial distortion mode of the multi-cantilever piezoelectric diaphragm array, and adjusts the resonance working frequency points of the cantilever piezoelectric diaphragms, so that under the condition of high sound pressure level output, the resonance peak of a high frequency band in a sound pressure level frequency response curve can be obviously reduced, and the sound pressure level output efficiency is improved. The flattening of the medium-high frequency band sound pressure level frequency response curve is realized, so that the effects of reducing distortion and improving sound quality are achieved.

A system and method for distortion reduction. In some embodiments, a system for distortion reduction includes a transmitter comprising pulse amplitude modulation driver circuitry. The pulse amplitude modulation driver circuitry may include a main driver comprising a most significant bit (MSB) amplifier and a least significant bit (LSB) amplifier. The LSB amplifiers may include an upper arm and a lower arm, the strength of which is adjustable.

The utility model discloses a loudspeaker with a novel magnetic circuit design, which comprises a loudspeaker body, the loudspeaker body is arranged in an up-and-down penetrating manner, the upper surface of the loudspeaker body is provided with a vibrating diaphragm, and the middle part of the upper surface of the vibrating diaphragm is provided with a dome; a plurality of voice coils are arranged on the lower surface of the vibrating diaphragm in parallel, the voice coils are symmetrically distributed with the symmetric plane of the vibrating diaphragm as the center and are arranged at equal intervals, the central axes of the voice coils are horizontally arranged, and a plurality of magnets are arranged on the lower portion of an inner cavity of the loudspeaker body. The magnets are distributed among the plurality of voice coils and on one side of the edge voice coil, and the horizontally arranged central axis of the voice coil is favorable for optimizing the linearity of the loudspeaker, so that the change of a BL value in the whole voice coil displacement range is smoother, and nonlinear distortion is reduced; the magnets are distributed between the voice coils and on one side of the edge voice coil, so that the design of a magnetic field can be optimized, the uniformity of the magnetic field can be improved, the smoothness of a BL value can be improved, distortion can be reduced, and dynamic response can be optimized.

The present application relates to a mobile body control device and control method, storage medium, and vehicle that appropriately recognize the outside of a mobile body according to a movement scene. A mobile body control device having one or more imaging devices includes: an image acquisition unit that acquires images of the outside of the mobile body from the one or more imaging devices; a correction unit that performs distortion reduction processing for reducing distortion of the images for one or more regions included in the images acquired from the one or more imaging devices; and a recognition unit that recognizes the outside of the mobile body based on the images after the distortion reduction processing, the correction unit determining the one or more regions that are the targets of the distortion reduction processing in accordance with a predetermined rule corresponding to the movement scene of the mobile body.

The embodiment of the invention provides a signal processing system and electronic equipment. The system comprises an input signal module, a displacement model, a filter coefficient generation module, a group delay compensation module, an adjustable equalizer, an amplifier and an audio converter. The input signal module is respectively connected with the group delay compensation module and the displacement model, the displacement model is connected with the filter coefficient generation module, the group delay compensation module is connected with the adjustable equalizer, the adjustable equalizer is connected with the amplifier, the amplifier is connected with the audio converter, and the filter coefficient generation module is connected with the adjustable equalizer. According to the technical scheme provided by the embodiment of the invention, the frequency response change related to the displacement of the driver can be corrected in a very wide frequency range, so that distortion, particularly intermodulation distortion, is reduced.

The present invention discloses an audio device, which includes a speaker, an input module and a control module. The speaker includes a magnetic circuit system and a vibration system. The magnetic circuit system is provided with a magnetic gap. The vibration system includes a diaphragm and a voice coil. The diaphragm is connected to one end of the voice coil and is arranged opposite to the magnetic circuit system. The other end of the voice coil is inserted in the magnetic gap. The voice coil has a first coil segment and a second coil segment. The first coil segment and the second coil segment are arranged in sequence along the axial direction of the magnetic gap, and the current direction in the first coil segment is opposite to the current direction in the second coil segment. The input module is electrically connected to the voice coil, and the input module is used to input current to the voice coil. The control module is electrically connected to the input module, and the control module is used to control the input module to switch the current size. The present invention aims to provide an audio device that can eliminate the reverse electromotive force of the voice coil, and the audio device can effectively reduce distortion, improve loudness, and improve subjective listening quality.

The application relates to a method for generating distortion reduced images of a wafer having a periodic semiconductor structure. A reference image of the wafer showing a reference region of the wafer with at least one reference feature representing a part of the periodic semiconductor structure is determined and a plurality of additional images of the wafer are determined, each of the additional images showing the reference region with the at least one reference feature and a milled region obtained by milling a top surface of the wafer, wherein the plurality of additional images differ from one another by a depth of the milled region. A first position of the at least one reference feature is calculated in the reference image, and for each of the additional images, a second position of the at least one reference feature in the additional images is calculated. A transform is determined with which the second positions are matched to the first position and the transform is applied to the additional images in order to obtain the distortion reduced images in the milled region.

Broadly speaking, embodiments of the present techniques generally relate to a method and user device for generating modified audio signals using a machine learning, ML, model. In particular, the present application relates to a computer-implemented method for training a ML model to generate modified audio signals for hearing-impaired persons and / or for distortion reduction or removal, and a user device for generating modified audio signals using a trained ML model. Advantageously, the present techniques provide an effective way of training a ML model to aid in the treatment of hearing impairments.

The present invention discloses an in-ear earphone with a caisson structure, comprising: a front cavity shell, comprising a front cavity and a sound outlet connected to the front cavity, wherein the sound outlet is sleeved with an earmuff; a rear cavity shell, comprising a rear cavity connected to the front cavity, wherein a caisson structure part is arranged in the rear cavity, wherein the caisson structure part comprises an upper caisson structure, a middle caisson structure and a lower caisson structure connected in sequence, wherein the middle caisson structure is located outside the upper caisson structure, and its diameter is larger than that of the upper caisson structure, and the lower caisson structure is located outside the middle caisson structure, and its diameter is larger than that of the middle caisson structure; a sound-emitting unit is arranged in the front cavity and the rear cavity; by arranging the caisson structure part in the rear cavity, a cavity is formed between the caisson structure part and the sound-emitting unit, thereby preventing the sound from diffusing upward, and scientifically applying the principle of acoustic inverted holes to play a role in gathering sound, and at the same time, in order to enhance the low-frequency response and improve the sound quality, the inverted holes reduce the back wave reflection of the bass unit, thereby making the bass cleaner and reducing distortion.

MEMS loudspeaker (1) for generating sound waves in the audible wavelength spectrum with a support element (9), a membrane (2) that can be deflected relative to the supporting element (9) along a z-axis, at least one piezoelectric actuator (7) supported on the support element (9) for deflecting the membrane (2), which is connected to the membrane (2) via a lifting structure (6), and an electronic control unit (11) for controlling the actuator (7), characterized by that the MEMS loudspeaker (1) includes at least one position sensor (19) by means of which a sensor signal (37) dependent on the membrane deflection can be provided to the control unit (11), that the position sensor (19) is at least partially integrated into the actuator (7), so that the position of the membrane (2) along the z-axis can be indirectly detected with it, that a connecting element (22) connects a free end of the position sensor (19) to the hub structure (6) and that the control unit (11) is designed in such a way, that it takes into account the elastic vibration properties of the connecting element (22) and that it performs a functional self-test procedure, a distortion reduction procedure, a damage protection procedure and / or a compensation procedure for changes in behavior, analyzing the sensor signal (37) and / or comparing it with a reference signal (8) stored in the control unit (11) and controlling the actuator (7) in a controlled manner, taking into account the analysis result (35) and / or comparison result (34).

An electronic device acquires a first image, and a second image that is an image obtained by applying a geometric transformation to the first image to reduce distortion. The electronic device switches display modes between a first mode of displaying an area of the first image in a display region, and a second mode of displaying an area of the second image in the display region. When switching the display modes, the electronic device adjusts a display position of an image that is displayed in the display region after the switching of the display modes such that an object located in a first position in the display region before the switching of the display modes will be located in the first position after the switching of the display modes.

In embodiments of the invention, the present invention is directed to a contact hearing system including: a transmit circuit including a transmit coil positioned in an ear tip, THE transmit circuit having a first bandpass characteristic, wherein the transmit circuit is tuned such that a center of the first bandpass characteristic is set at a first frequency; and a receive circuit including a receive coil positioned on a contact hearing device, the receive circuit having a second bandpass characteristic, wherein the receive circuit is tuned such that a center of the second bandpass characteristic differs from the center of the first bandpass characteristic.

The purpose of the present invention is to reduce distortion a frequency band component encoded with a small number of bits in a time domain and improve quality. An audio decoding device (10) decodes an encoded audio signal and outputs the audio signal. A decoding unit (10a) decodes an encoded sequence containing an encoded audio signal and obtains a decoded signal. A selective temporal envelope shaping unit (10b) shapes a temporal envelope of a decoded signal in the frequency band on the basis of decoding related information concerning decoding of the encoded sequence.

Telecommunications network hardware unit comprising a processor connected to a computer-readable memory unit, the memory unit containing instructions which, when executed by the processor, implement a method for dynamically filtering telecommunications network agents, the method comprising: Retrieval, by the processor executing software code with respect to a virtual network function (VNF) and a physical network function (PNF) of the telecommunications network hardware unit, of peripheral data associated with a user device (UE) that is enabled with respect to a telecommunications network associated with the telecommunications network hardware unit; Assigning peripheral data to a predefined filter selection model by the processor; Selecting, by the processor executing the predefined filter selection model, and in response to the results of mapping, a filtering agent model from a pool of model resources; Selecting, by the processor in response to the execution of the filtering agent model, filtering agents from the VNF and in connection with noise and distortion reduction, which is related to the UE in relation to the telecommunications network; Retrieval, by the processor using a plurality of sensors of a global positioning system (GPS sensors), of environmental properties related to the telecommunications network; Identify, by the processor based on the environmental characteristics, a specified location of the UE that is enabled in relation to the telecommunications network; Sending the filtering agents to the UE via push, through the processor, with the filtering agents being stored within a temporary memory area of ​​an operating system of the UE; Generating, by the processor, network instructions related to the execution of the filtering agents; Execution, by the processor in response to the activation of the network instructions, of the filtering agents with respect to the UE, wherein the execution activates the filtering agents with respect to the UE for a specified time frame; and Reduce, by the processor in response to the results of execution, noise and distortion that occur during the operation of the UE in relation to the telecommunications network.

According to the omnidirectional circularly polarized antenna, the oscillator arms are of a spiral structure, so that under the condition that the heights of the antennas are the same, compared with linear oscillator arms, the oscillator arms are longer in current path and have good standing-wave ratio characteristics and gain characteristics; due to the fact that the multiple oscillator arms on the same layer are arranged in the circumferential array mode, and the spiral directions of the oscillator arms on different layers are opposite, the omnidirectional circularly-polarized antenna has the excellent omnidirectional performance and the stable radiation characteristic. Due to the arrangement of the short-circuit sleeve, the influence of induction current on the feed cable on an antenna radiation pattern can be effectively reduced, the original pattern can be preserved to the greatest extent, and the antenna has higher gain and more stable radiation performance; in general, the omni-directional circularly polarized antenna is not easily influenced by cable induction current, and shape preservation and distortion reduction can be performed on a directional diagram to the greatest extent while the characteristics of high gain and high axial ratio are maintained, so that the communication quality is improved.

In embodiments of the invention, the present invention is directed to a contact hearing system including: a transmit circuit including a transmit coil positioned in an ear tip, THE transmit circuit having a first bandpass characteristic, wherein the transmit circuit is tuned such that a center of the first bandpass characteristic is set at a first frequency; and a receive circuit including a receive coil positioned on a contact hearing device, the receive circuit having a second bandpass characteristic, wherein the receive circuit is tuned such that a center of the second bandpass characteristic differs from the center of the first bandpass characteristic.

The audio power amplifier distortion reduction method is based on the common negative feedback introduction mode, at which the resistors-based R5, R6, Rnfb linear adder (12) sums input signal voltage Uin and output signal voltage Uout, as well as on the absence of the voltage amplifier stages. The signal is current-amplified only. First stages (10) convert the output voltage of the adder Uin + Ufnb into the output currents. Resistor Rcm (11) sets the current for two current mirrors at once, stabilizing the emitter currents of the transistors of first stages (10). Current amplifiers are supplied from the ground. Frequency dependent chains Rf, Cf (20, 21) and Rca, Cfc (40, 41) form the frequency dependence of amplifiers (30, 31) current gain. Current mirrors (50, 51) carry out the additional signal current amplification. Circuit (13) sets the bias voltage of the output stage transistors, and the output stage converts the voltage into the amplifier output current. Transistor blocks (10, 11, 50, 51) are supplied via power buses +U and –U over RC-filters (60, 61).

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to select a set of beams to generate energy in a first coverage region (e.g., an out-of-coverage (OOC) region) to reduce the effects of a distorted electric field. The UE may select the set of beams based on gain parameters associated with a set of antennas at the UE, where the gain parameters are determined for communications in a second coverage region (e.g., an in-coverage (INC) region). In some examples, the UE may use iterative techniques to select the beams. In some examples, the UE may select the set of beams based on calculations using a set of codebook beams associated with the second coverage region. In some examples, the UE may additionally select the set of beams for communications in the second coverage region.

A system is provided that may include plural converters that are connected to a common bus. Each of the converters may be configured to convert an alternating current (AC) through the common bus to a direct current (DC) by alternating switches of each of the plural converters between open and closed states in a switching cycle. The system may also include a controller circuit that may be configured to adjust the AC conducted onto the common bus to the plural converters so that a root mean square of a ripple current component of the AC meets one or more designated criteria.

The purpose of the present invention is to reduce distortion a frequency band component encoded with a small number of bits in a time domain and improve quality. An audio decoding device (10) decodes an encoded audio signal and outputs the audio signal. A decoding unit (10a) decodes an encoded sequence containing an encoded audio signal and obtains a decoded signal. A selective temporal envelope shaping unit (10b) shapes a temporal envelope of a decoded signal in the frequency band on the basis of decoding related information concerning decoding of the encoded sequence.