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JP6215527B2 |
A physical quantity measuring apparatus of the present invention measures a physical quantity from a signal based on a physical quantity output by a physical quantity signal output apparatus. A correction signal output unit outputs a new...
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JP6213868B2 |
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JP6199478B2 |
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JP6182869B2 |
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JP2017118493A |
To provide a method for quantization noise cancellation in a continuous-time multi-stage noise shaping analog-to-digital converter (CT MASH ADC).Digital quantization noise cancellation filters adaptively track transfer function variation...
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JP6151889B2 |
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JP2017516340A |
In one embodiment, the method for training an adaptive filter is to receive an input signal and a training reference signal by the processor of the device, and to determine a correlation matrix according to the input signal, the training...
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JP6112821B2 |
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JP6110557B2 |
A system and method for reducing noise caused by two or more rotating devices by taking in input signals with frequencies that are related to the rotation rates of the rotating devices, and causing one or more loudspeakers to produce sou...
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JP6063428B2 |
A tire pressure decrease detection apparatus comprising a rotation speed information detection unit for detecting rotation speed information of wheels of a vehicle, a resonance frequency estimate unit for time-series estimating a torsion...
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JP6037318B2 |
Maximum likelihood bit-stream generation and detection techniques are provided using the M-algorithm and Infinite Impulse Response (IIR) filtering. The M-Algorithm is applied to a target input signal X to perform Maximum Likelihood Seque...
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JP6032247B2 |
A distortion compensation system includes a first communication node including a first reception unit including an equalizer configured by a first digital filter unit and a first transmission unit including an emphasis circuit configured...
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JP5982880B2 |
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JP5958218B2 |
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JP5902961B2 |
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JP5862295B2 |
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JP5860383B2 |
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JP5855716B2 |
A method and apparatus for a decision feedback equalizer wherein a correction term is used to compensate for slicer errors, thus avoiding error propagation. Filter coefficients for the equalizer are selected so as to minimize a cost func...
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JP2016015586A |
To provide an LRLS filter capable of obtaining an accurate solution concerning determination of time-varying α(k) and reducing an amount of calculation, and provide an LRLS (leaky recursive least-squares) filter having an algorithm capa...
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JP5818608B2 |
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JP5752928B2 |
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JP5715595B2 |
An audio system with at least one audio channel is disclosed. The audio system includes a digital audio processor in which at least one digital filter is implemented for each channel. The digital filter of each channel comprises: an anal...
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JP2015082739A |
To reduce calculation costs and prediction errors by accurately and quickly extracting a signal from data including noise.An adaptive signal processing device includes: a time series data input unit; an arithmetic processing unit which g...
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JP2015070471A |
To provide an adaptive signal processing technology capable of tracking environmental variance.A Kalman gain update part 42 updates Kalman gain based on autocorrelation of input data. A filter coefficient update part 46 updates a filter ...
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JP5694063B2 |
The invention is directed to a method for automatically determining an equalizing filter characteristic for an indoor communication system of a vehicular cabin, the indoor communication system comprising at least one loudspeaker and at l...
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JP5694444B2 |
A method and apparatus for a decision feedback equalizer wherein a correction term is used to compensate for slicer errors, thus avoiding error propagation. Filter coefficients for the equalizer are selected so as to minimize a cost func...
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JP5686752B2 |
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JP5685908B2 |
A loop filter include: a register that stores a result of arithmetic operation performed on a complex signal and outputs the stored complex signal; a first multiplier that multiplies the complex signal output from the register and a pred...
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JP5683307B2 |
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JP2015019174A |
To provide a signal processing device that has an improved characteristic of suppressing an interference signal.A signal processing device 1 includes: an adaptive filter 19 for outputting an interference replica signal input thereinto vi...
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JP2014228926A |
To provide smoothing processing while preserving edges at a low cost.A cyclic digital filter introduces level adaptation processing of input signals to perform smoothing processing while preserving edge areas, which are steep change of t...
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JP5605071B2 |
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JP5598390B2 |
The present application discloses a method for adaptive blind equalization of a PSK signal, an equalizer and a receiver. According to embodiments as provided, a conjugate product of a current output and a precedent output of an FIR filte...
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JP2014174347A |
To provide an active silencer which satisfactorily maintains an adaptive control performance of a control processing part.A first microphone collects a control target sound and generates it as a reference signal. A second microphone coll...
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JP5584969B2 |
In accordance with a particular embodiment of the present invention, a method is offered that includes providing a low-pass filter in an adaptive filter architecture employing a fast steepest descent method. The method further includes d...
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JP2014145905A |
To achieve a high silence effect even out of a specific distance between a microphone and speaker, in an active noise control system for eliminating sound by generating a sound of an inverse phase to a noise.In the active noise control s...
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JP5570250B2 |
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JP2014143672A |
To improve equalization characteristics with simpler constitution.An equalizer includes: a first identification circuit which receives an input signal corresponding to a signal output from a transmission-side equalizer, and binarizes the...
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JP5550476B2 |
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JP5542179B2 |
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JP5521725B2 |
To solve the problem of being incapable of flexibly changing a filter composition according to a requested characteristic since a filter circuit for an equalizer is conventionally fixed.The equalizer includes: the filter circuit which ca...
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JP2014049972A |
To provide an acoustic correction method of an acoustic output in electronic equipment and the electronic equipment.Electronic equipment includes: extraction means; analysis means; and setting means. The extraction means extracts a measu...
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JP2014030074A |
To provide a technique for automatically configuring a whitening filter with a frequency warping parameter optimized for increasing the resolution of a frequency band with a concentration of poles to a required level.A system is so confi...
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JP5405117B2 |
Techniques for filtering noisy estimates to reduce estimation errors are described. A sequence of input values (e.g., for an initial channel impulse response estimate (CIRE)) is filtered with an infinite impulse response (IIR) filter hav...
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JP5405541B2 |
A method and apparatus for a decision feedback equalizer wherein a correction term is used to compensate for slicer errors, thus avoiding error propagation. Filter coefficients for the equalizer are selected so as to minimize a cost func...
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JP5393412B2 |
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JP2014011615A |
To increase the number of taps and improve reception performance by suppressing an increase in circuit scale and an increase in operating clock frequency.A first block-generating section 102 divides an input signal in the time domain int...
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JP2013239780A |
To form a filter to remove a noise signal in a digital receiving device more quickly than ever.A sub-adaptive filter unit 35 is switched to a learning mode for as long as a determination time in which determination of a received signal i...
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JP5321914B2 |
A system identifying device for identifying an unknown system interposed between first and second input terminals. The system identifying device preferably comprises adaptive and dependent filters which receive a signal supplied through ...
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JP5319608B2 |
To provide a filter coefficient setting method of a digital receiving device and the digital receiving device which quickly perform, even when receiving different noise signals in respective receiving operation mode, calculation and upda...
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