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JP2014204824A |
To transmit a biological signal of a plurality of channels in real time through wireless communication.A mobile type biological signal transmission device has: a plurality of analog sensor sections in which a biological signal is input; ...
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JP2014204220A |
To provide a digital filter that can suppress the amount of generation of a discontinuous change in a filtering result when a filter characteristic is modified by switching a coefficient vector.Coefficients K-Kcorresponding to an input d...
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JP2014204213A |
To provide a digital filter that can suppress the generation of a discontinuous change in a filtering result when a filter characteristic is modified by switching a coefficient vector.When switching from a first coefficient vector to a s...
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JP5611316B2 |
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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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JP5593988B2 |
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JP5595355B2 |
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JP5587212B2 |
The present invention relates to a method of processing a signal which is received by a receiver, comprising, obtaining an analog signal (yt) based on another signal (xt) and noise; defining a sampling kernel based on the noise; and usin...
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JP5579273B2 |
It is an object of the present invention to obtain a demultiplexing apparatus in which a circuit size can be reduced. The demultiplexing apparatus includes a demultiplexed-signal selecting and distributing unit 130 configured to apply fr...
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JP5574998B2 |
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JP5575149B2 |
To obtain a demultiplexing device that can reduce power consumption. The demultiplexing device includes frequency-conversion and reception low-pass-filter units 101 to 114 that perform a frequency converting process and a low-pass filter...
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JP5577187B2 |
The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as...
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JP5573901B2 |
A position coordinate difference calculation section (5) calculates a position coordinate difference between a position coordinate of an output digital signal and a position coordinate of an input digital signal close to it. An FIR coeff...
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JP5573926B2 |
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JP5564743B2 |
There is provided a filter circuit for producing a noise reduction signal for reducing a noise signal collected by a microphone, including: a digital section including an analog/digital conversion section configured to convert the noise ...
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JP5563469B2 |
The invention allows the interpolation factor, a critical parameter in sample rate conversion systems, to be computed in a real-time system where there is a complex relationship between a DSP clock and the data clocks. Typically, two or ...
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JP5560787B2 |
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JP5557339B2 |
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JP5557467B2 |
The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as...
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JP5541832B2 |
The present invention relates to a method for processing an input signal (x(n)) of a first sampling rate that comprises the steps of up-sampling (1) the input signal (x(n)) to obtain an up-sampled signal (x L (n)), low-pass filtering (2)...
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JP2014123251A |
To provide a digital signal processing device capable of changing a unit smaller than a division unit of an input signal (for example, a frame of video or a sound, a field of video, a block and a slice of video or an image) and an applic...
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JP5540211B2 |
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JP5529988B2 |
The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502),...
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JP5531024B2 |
Methods for filtering an input signal x(k) to produce an output signal y(k) such that the ratio of a power level of the output signal to a power level of the input signal is substantially equal to a desired value γ are provided. The met...
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JP5521762B2 |
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JP5526305B2 |
To provide a device by which compression effect is held constant irrespective of an input level of an audio signal.A gain converter 40 outputs a compression gain obtained by dividing a preset threshold value t by an envelope signal outpu...
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JP5514050B2 |
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JP5506825B2 |
A 1/n-rate decision feedback equalizer (DFE) and method include a plurality of branches. Each branch includes a summer circuit configured to add a feedback signal to a received input, and a latch configured to receive an output of the su...
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JP2014093766A |
To provide a method that significantly reduces the complexity of deciding coefficients of a FIR filter by a frequency sampling method.An inverse Fourier transform scheme involving coefficient averaging and truncation requires the followi...
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JP2014511064A |
Filters and methods for filtering signals are disclosed. The filter is equivalent to multiple biquad filters connected in series, receiving a series of signal values at a sampling rate characterized by a sampling period, and each receive...
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JP2014064282A |
To provide a method for optimizing processor operation in a processing system including one or more digital filters.A flowchart 200 indicates a method for optimizing processor operation in a processing system including one or more digita...
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JP2014057317A |
To provide compact filters with low power consumption.A passive switched-capacitor (PSC) filter implements a second-order infinite impulse response (IIR) filter with two complex first-order IIR sections. Each complex first-order IIR sect...
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JP5453222B2 |
A filter converter (104) for converting an impulse response signal indicative of an amplitude/frequency filter characteristic in a time domain into filter definition signal, the converter comprising a complex modulated filter bank (301) ...
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JP5452936B2 |
A filter converter (104) for converting an impulse response signal indicative of an amplitude/frequency filter characteristic in a time domain into filter definition signal, the converter comprising a complex modulated filter bank (301) ...
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JP5447680B2 |
For an input signal with a ringing superposed thereon, a ringing-generating filter (12) generates an analogous ringing waveform from only a peak portion of the signal which precedes the ringing. A subtractor (11) subtracts the analogous ...
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JP5444753B2 |
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JP2014050036A |
To provide a filter coefficient conversion device, method and program that convert a computer-determined filter coefficient of a FIR filter (BPF) comprising a real component to a complex filter coefficient including an imaginary componen...
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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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JP5438062B2 |
The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502),...
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JP5438069B2 |
The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502),...
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JP5428481B2 |
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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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JP5415851B2 |
The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502),...
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JP2014027343A |
To provide a peak suppression circuit capable of reducing a circuit scale of band limit of impulse signal, while improving adjacent channel leakage power ratio when peak signal having power being higher than average power is suppressed.A...
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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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JP5399271B2 |
In certain embodiments, an improved audio equalization filter can be generated by frequency warping one or more digital filters having a plurality of frequency bands. Frequency warping can include, for example, transforming at least some...
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JP5388542B2 |
To resolve the problem that distortion may occur due to lack of quantization bits during digital processing of a low-level audio signal because an audio signal analogically occur in many cases and has features of a wide dynamic range. A ...
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JP5379379B2 |
A method and apparatus are disclosed. The apparatus includes a store of at least one historical sensor measurement, a store of potential cut-off frequencies, and a filter. Each potential cut-off frequency is associated with a respective ...
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JP5369944B2 |
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