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WO/2024/051277A1 |
The present invention relates to a variable-step quaternion adaptive noise reduction method and system for active impulse noise control, and relates to the technical field of active control noise reduction. The method comprises the follo...
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WO/2023/236247A1 |
The present invention relates to the field of automatic control. Disclosed is an adaptive robust estimation method and system for unmanned surface vessel parameters. The method comprises: firstly, constructing an augmented state estimati...
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WO/2023/226150A1 |
The present application provides an RC low-pass filter and a method for fast establishment of a filter. The RC low-pass filter comprises: an at least first-order RC low-pass filter and at least one charge transfer unit, the at least firs...
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WO/2023/162143A1 |
The present invention can compensate for various types of distortion while suppressing an increase of the calculation amount. A first filter (23) performs compensation for first distortion included in reception signals which have been co...
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WO/2023/032472A1 |
The present invention provides a signal-processing system comprising: an adaptive decimation filter device having a decimation filter that outputs an output signal obtained by down-sampling an input signal, and a filter control unit that...
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WO/2023/032471A1 |
Provided is a signal processing system comprising: an adaptive decimation filter device having a decimation filter for outputting an output signal obtained by downsampling an input signal, and a reflected noise detection unit for detecti...
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WO/2023/032470A1 |
Provided is an adaptive filter device comprising a decimation filter that outputs an output signal obtained by down-sampling an input signal, and a filter control unit that adjusts the order of the decimation filter on the basis of a cha...
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WO/2022/217641A1 |
A unified expression method for a self-adaptive filter coefficient-based radio frequency fingerprint and an electronic device. The method comprises: a receiver receives a wireless signal by means of oversampling, and obtains all baseband...
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WO/2022/193213A1 |
ADAPTIVE LOGIC BOARD FOR VARIABLE SPEED DRIVE An adaptive logic board (100) for a variable speed drive (52), VSD, of a heating, ventilation, air conditioning, and refrigeration, HVAC&R, system includes a signal sensing circuit (154) conf...
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WO/2022/171168A1 |
A filter (100), comprising: a piezoelectric layer (105); a first electrode (108) disposed on a first vertical surface of the piezoelectric layer (105) and configured to receive an electrical signal; and a second electrode (109) disposed ...
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WO/2022/040316A1 |
An optical system including an optical cavity and a method of tuning an optical cavity using a machine learning model is provided. The method includes determining a tuning parameter of the optical cavity by: analyzing, using a convolutio...
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WO/2022/034967A1 |
The present invention relates to a novel type of adaptive filter, and an echo cancelling device and method using same, and provides an adaptive delay diversity filter for coping with a situation in which the variation of time delay betwe...
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WO/2021/241362A1 |
A tap coefficient control circuit (12) sets tap coefficients which are updated by a second tap coefficient updater (11) as initial values for a convergence operation of tap coefficients of a first digital filter (13) updated by a first t...
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WO/2021/210259A1 |
In order to reduce the amount of calculation for signal distortion compensation, this filter coefficient updating device for updating the filter coefficients of a plurality of filters in a filter layer comprising the plurality of filters...
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WO/2021/183936A1 |
A multi-tune filter system and a control system for operating the multi-tune filter system are described herein. The multi-tune filter system is a tunable frequency range filter. Further, the multi-tune filter system is a digitally progr...
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WO/2021/079647A1 |
In order to suppress wrong convergence of a filter coefficient without reducing data communication speed, this filter coefficient update amount output device is provided with: a first output unit which outputs a first coefficient update ...
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WO/2021/046136A1 |
An multi-input, multi-output audio process is implemented as a linear system for use in an audio filterbank to convert a set of frequency-domain input audio signals into a set of frequency-domain output audio signals. A transfer function...
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WO/2021/016002A1 |
An adaptive filter calculates frequency domain coefficients and in the frequency domain dynamically adjusts a leakage/step size parameter that controls adaptation of the adaptive filter based on the calculated frequency domain coefficien...
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WO/2021/016001A1 |
An adaptive filter converts time domain samples of an input signal into frequency domain signals, dynamically adjusts a stability conditional number based on the frequency domain signals, and uses the dynamically adjusted stability condi...
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WO/2020/248164A1 |
Some of embodiments of the present application provide an active noise reduction method, device and chip, and an active control system and a storage medium. The active noise reduction method comprises: performing frequency-domain adaptiv...
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WO/2020/204408A1 |
The present disclosure relates to an artificial intelligence (AI) system which simulates functions such as cognition, judgment, and the like of the human brain by utilizing machine learning algorithms such as deep learning and the like, ...
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WO/2020/153816A1 |
An electronic device in a wireless communication system according to various embodiments may comprise: a processor; a power amplifier (PA) for a first frequency band; a low-noise amplifier (LNA) for a second frequency band which at least...
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WO/2020/105430A1 |
The purpose of the present invention is to obtain an output signal y by performing waveform equalization in which an input signal x having non-linearity is expanded in a second-order Volterra series. The m-th output signal y(m) is determ...
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WO/2020/074771A1 |
An apparatus, method and computer program is described comprising: receiving a near-field audio source signal from a near-field microphone (22); receiving a far-field audio signal from an array comprising one or more far-field microphone...
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WO/2020/055994A1 |
A digital signal conditioner (DSC) system in which a sample selector bank (56) receives a digital sample block (A_SMPL) of an input signal (IN_SMPL) that is provided at a supported input oversampling factor and selects a subset of sample...
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WO/2020/000979A1 |
A modeling method for a spatial filter. The modeling method for the spatial filter comprises: obtaining the formula of a self-adaptive filtering algorithm (202); and changing the formula of the self-adaptive filtering algorithm to be a p...
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WO/2019/241877A1 |
In a general aspect, a motion detection system detects gestures (e.g., human gestures) and initiates actions in response to the detected gestures. In some aspects, channel information is obtained based on wireless signals transmitted thr...
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WO/2019/232610A1 |
A compensation circuit for an oven-controlled crystal oscillator serving as a reference for a phase-locked loop in holdover mode is disclosed. A non-linear function module generates a modified aging signal that is a non-linear function o...
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WO/2019/181734A1 |
Provided is a filter control method comprising: accepting a plurality of parameters which define a frequency response of a filter element used to control a sound signal and which include a parameter defining a central inclined portion be...
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WO/2019/141579A1 |
The invention relates to a method for estimating a radiorefrequency frame received by a plurality of antennae delivering a plurality of corresponding reception signals. Such a method comprises the following steps: detection, or not, of a...
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WO/2019/135053A1 |
The invention relates to a method for filtering an input signal (3b, 4b, 5b) relative to a physical variable of a turbine engine (9), the input signal being digitised, the method implementing frequency filtering of said signal in a compu...
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WO/2019/129838A1 |
The material invention shows a filter that is capable of filtering a noisy, periodic measurement signal having oscillations at a variable fundamental frequency and harmonic oscillation components of the fundamental frequency by virtue of...
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WO/2019/123682A1 |
An apparatus for controlling a system includes a memory to store a model of the system including a motion model of the system subject to process noise and a measurement model of the system subject to measurement noise, such that one or c...
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WO/2019/092798A1 |
In order to achieve high-speed convergence and low-distortion output signals without manually controlling a step size, a signal processing apparatus is provided with: a first input means that receives a first intermingled signal in which...
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WO/2019/056372A1 |
The invention provides a method of processing signals by an adaptive filter. The method includes the steps of determining a direct path distance d between a speaker and a microphone. Based on said determined direct path distance d, a num...
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WO/2019/016494A1 |
We describe a method for acoustic source separation. The method comprises: inputting acoustic data from a plurality of acoustic sensors, said acoustic data comprising acoustic signals combined from a plurality of acoustic sources; conver...
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WO/2018/234617A1 |
A method, apparatus and computer-readable medium are disclosed for receiving, from a far-field microphone device, at least one far-field audio signal in a time domain corresponding to a mobile source located within a recording space, the...
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WO/2018/234618A1 |
A method, apparatus and computer-readable medium are disclosed for using a linear transformation of a far-field audio signal and a linear transformation of a near-field audio signal to determine a room impulse response filter relating to...
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WO/2018/226842A1 |
A method of performing cancellation for acoustic or electromagnetic measurement or communications includes receiving an output signal to be applied to a transmit transducer, introducing a delay to the output signal to produce a delayed o...
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WO/2018/225708A1 |
An equalizer is provided in which a balance between mounting cost and reception quality is achieved in SC-MIMO transmission. The equalizer can connect with N reception antennas that receive single-carrier transmission signals transmitted...
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WO/2018/103932A1 |
The invention relates to a method for adapting an electronic filter unit (40). At the beginning, a plurality of first input values (31) is captured within a first time period. Subsequently, filtered output values (36) are produced by fil...
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WO/2018/044801A1 |
Embodiments of source separation for reverberant environment are disclosed. According to a method, first microphone signals for each individual one of at least one source are captured respectively by at least two microphones for a period...
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WO/2017/189271A1 |
Embodiments of the present disclosure provide mechanisms that enable designing an FIR filter that would have a guaranteed globally optimal magnitude response in terms of the minimax optimality criterion given a desired weight on the erro...
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WO/2017/135012A1 |
An active vibration and noise control device robust against outside disturbances, and an active vibration and noise control circuit are provided. An adaptive control circuit (50) of this active vibration and noise control device (24) has...
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WO/2017/129569A1 |
Method and device for determining the parameters of an adaptive Kalman filter from an ARMA model of data from a time series and method and device for determining an ARMA model approximating a time series.
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WO/2017/100298A1 |
Various examples are provided related to speech recognition. In one example, a method includes converting an auditory signal into a pulse train, segmenting the pulse train into a series of frames having a predefined duration, and identif...
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WO/2017/097161A1 |
An apparatus, comprising a receiver configured to receive a primary signal that comprises a narrowband noise component and a broadband noise component, a processor coupled to the receiver and configured to determine, in a time domain, an...
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WO/2017/017056A1 |
Partitioned block frequency domain adaptive filter device comprising: a frequency domain adaptive filter configured for filtering a frequency domain representation of a time domain input signal depending on a set of filter coefficients c...
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WO/2017/012350A1 |
A filter state divergence judgement method and device, which are used for solving the problems in the prior art that a filter state judgement method has a relatively high calculation complexity and has a possibility of misjudgement. The ...
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WO/2016/134839A1 |
A channel selector (C0) for a frequency modulation radio frequency receiver, comprising a band-pass filter (2), of which the frequency band (BPF) is centred on the central frequency (F0) of the channel to be selected, and has a width tha...
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