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JP5313496B2 |
The adaptive beamformer unit (191) comprises: a filtered sum beamformer (107) arranged to process input audio signals (u 1, u2) from an array of respective microphones (101, 103), and arranged to yield as an output a first audio signal (...
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JP5298894B2 |
A distortion compensating apparatus (1) which compensates for distortion in a waveform of a received light signal through a digital signal processing includes a plurality of fixed amount compensating units (2-1 through 2-N, and 3-1 throu...
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JP5290956B2 |
An audio signal decorrelator (100) for deriving an output audio signal (170) from an input audio signal (112) comprises a frequency analyzer (110) for extracting a first partial signal (120) and a second partial signal (122) from the inp...
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JP5284475B2 |
The application relates to a method for determining at least one updated filter coefficient of an adaptive filter (22) adapted by an LMS algorithm. According to the method, filter coefficients of a first whitening filter (25') are determ...
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JP5251808B2 |
To accurately remove noise from input voice. A removing part removes the component of a second voice from a first signal obtained from a first input part to which first voice is mainly input, by using a filter coefficient which is update...
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JP5245685B2 |
In accordance with a particular embodiment of the present invention, a method is offered that includes providing a filter and an adaptive control element that is operable to communicate with the filter. The method also includes measuring...
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JP5245686B2 |
In accordance with a particular embodiment of the present invention, a method is offered that includes characterizing a data correlation matrix for an idle pattern offline in a filter environment and, further, using a static adaptive con...
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JP5242649B2 |
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JP2013135328A |
To recognize a desired wave signal transmitted by a portable device more securely at a digital receiver.A determination part 51 determines whether a reception signal is a desired signal Sk or a noise signal Sn at every predetermined peri...
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JP5200239B2 |
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JP5205935B2 |
To suppress degradation of adaptation speed by reducing a calculation amount of a coefficient update of an adaptive filter, by performing suitable tap coefficient update in a dynamically changing device and environment. A coefficient upd...
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JP5196653B2 |
A large-scale sound system or communication system is numerically and stably identified. When an input signal is represented by the M(s N)-th order AR model, high-speed H filtering can be performed with a computational complex 3N + ...
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JP5191413B2 |
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JP5172801B2 |
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JP5160712B2 |
An input signal is filtered for creating an output signal using an adaptive filter. An error signal is derived from the output signal. The adaptive filter has coefficient whose value can be modified. A value of a coefficient is modified ...
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JP5157536B2 |
An apparatus includes an oscillator circuit configured to generate a certain oscillation signal, an adder configured to add the oscillation signal to the tap coefficient of any of one or more taps of the transversal filter, a signal-qual...
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JP5146571B2 |
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JP5131416B2 |
To suppress reduction in stability with respect to disturbance, and further to prevent a convergence speed from decelerating, even if input signal is chromatic. As a control apparatus 30 for an adaptive filter 10, which periodically upda...
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JP2013016895A |
To provide an adaptive filter which can properly control an update amount of a filter coefficient even when the amplitude of an input signal significantly fluctuates.An adaptive filter includes: a filter configured to perform a filtering...
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JP5122591B2 |
A method for reducing ringing in a signal output from a filter comprising inputting a signal into a filter; filtering a first portion of the input signal to generate a filtered portion of the output signal; analyzing the filtered portion...
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JP5119388B2 |
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JP5113145B2 |
An active noise control system includes a plurality of adaptive filters. The plurality of adaptive filters each receives an input signal representative of an undesired sound. The adaptive filters may each generate an output signal based ...
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JP5115952B2 |
To provide a noise suppression device and noise suppression method based on a Kalman filter, which do not need estimation on AR (autoregressive) coefficient, are simple and which have high noise suppression capability. A noise suppressio...
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JP5099035B2 |
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JP5095444B2 |
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JP5089281B2 |
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JP5065784B2 |
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JP5063851B2 |
A near object detection (NOD) system includes a plurality of sensors, each of the sensors for providing detection coverage in a predetermined coverage zone and each of the sensors including a transmit antenna for transmitting a first RF ...
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JP5064358B2 |
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JP5045574B2 |
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JP2012191509A |
To adjust a frequency band compensation level of an equalizer so that it can comply with attenuance in a predetermined frequency band of an input signal.According to an embodiment, a storage device includes a first equalizer, a second eq...
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JP5032921B2 |
To prevent an audio sound signal from being distorted, the audio sound signal being obtained by correcting, based on sound image control information, a transformation coefficient of duplicated quadrature transformation such as MDCT. In a...
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JP5029355B2 |
A complex signal in which one of two signals that have been generated from a single real signal and that have phases that are shifted 90° with respect to each other is a real part and the other signal is an imaginary part is applied as ...
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JP5029357B2 |
An adaptive digital filter is provided with a filter unit for generating and supplying an output signal by means of a convolution operation of an input signal and a filter coefficient, or a filter unit for taking as input signal a comple...
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JP5029356B2 |
A complex signal in which one of two signals that are generated from one real signal and that have phases shifted from each other by 90° is a real part and the other signal is an imaginary part is applied as input to an input terminal (...
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JP5016501B2 |
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JP5016500B2 |
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JP5020057B2 |
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JP5013580B2 |
To provide an adaptive filter device which controls an updating amount with a simple configuration, and well follows the change of a system. The adaptive filter device calculates: a signal e'(n) where the front half of a total step numbe...
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JP2012151865A |
To filter noisy estimates to reduce estimation errors.Input samples y(k) from a receiver are sent to a channel estimator 310 and to a data finite impulse response (FIR) filter 360. Within the channel estimator 310, an initial channel est...
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JP4975073B2 |
To achieve an improved convergence behaviour for, e.g., echo cancellation there is provided a digital adaptive filter which includes a filter coefficient update means to successively update filter coefficients in accordance with an input...
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JP4966121B2 |
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JP2012123135A |
To solve the problem in which: in an active noise reduction device using a filtered-X LMS algorithm, if there are variations in acoustic transmission characteristic and level of reference signal, it is difficult to grasp a gain margin an...
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JP4964267B2 |
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JP4963356B2 |
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JP4945955B2 |
A method determines tap coefficients of a phase interpolation finite impulse response (FIR) filter with respect to a digital-signal phase-locked loop processing apparatus including an A/D converter receiving a reproduced signal serving a...
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JP4929134B2 |
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JP4928918B2 |
To provide a signal processing device capable of a reliable adaptive operation without a distortion in a target signal or adaptation to background noise. The signal processing device has a first adaptive filter 1 and a second adaptive fi...
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JP4928052B2 |
An antenna element is described which has at least one radiator layer disposed over a feed circuit layer. The radiator has a first ground plane disposed thereon and the feed circuit layer has a second ground plane disposed thereon. A con...
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JP4914188B2 |
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