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JP5127345B2 |
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JP5118175B2 |
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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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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JP5120079B2 |
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JP5118234B2 |
The finite impulse response (FIR) filter is implemented as a table using read-only memory (ROM). The FIR filter table stores a pre-calculated output filter value for each permissible combination of input values to be filtered. Streams of...
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JP5119388B2 |
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JP5114752B2 |
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JP5115764B2 |
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JP5114870B2 |
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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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JP5106936B2 |
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JP5109886B2 |
A disclosed group delay characteristic correcting device corrects group delay characteristics of an analog low-pass filter used to remove aliasing of a digital-analog converter or an analog-digital converter. The group delay characterist...
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JP5108022B2 |
A finite impulse response filter is implemented as a sum of individual component, running-sum filters. The sum of all of the component filters required for a desired filter response is calculated in an accumulator and only the component ...
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JP5106641B2 |
A demultiplexing apparatus includes, in each of n stages, 2 n FC+RXHBFs 12 that down-sample a signal, from which a high-frequency component is removed after frequency conversion is carried out, and output the signal. The demultiplexing a...
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JP2012253592A |
To provide a systolic FIR filter that performs a filter operation with many taps without requiring an increased circuit scale.The systolic FIR filter comprising arrayed processing elements each having a multiplier and an adder includes: ...
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JP5103606B2 |
It is intended to expand the bit number of information signals and to prevent the information at that time from degradation. For this intention, a signal from an input terminal (1) is fed through predetermined delay means (2) to a variab...
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JP5102710B2 |
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JP5099035B2 |
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JP5095444B2 |
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JP5092580B2 |
The present invention provides a digital signal processing device that considerably reduces a return noise generated in a processing result signal in specific signal processing without wastefully increasing the processing load. There is ...
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JP5092902B2 |
To compute an FIR filter coefficient having a fine SN ratio and response characteristic based on a set frequency characteristic. An individual phase information generating part 22 computes a real part and an imaginary part of a spectrum ...
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JP5086442B2 |
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JP5086621B2 |
A Finite Impulse Response (“FIR”) filter that uses an approximation of the time integral of the impulse response derived from data collected at non-uniform intervals and processes time-synchronized measurements taken at uneven interv...
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JP5086675B2 |
To provide a filter computing unit using Booth's algorithm and a motion compensation device that can reduce hardware resources and power consumption. The filter computing unit, which multiplies-and-accumulates filter coefficients and inp...
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JP5083884B2 |
A signal processing unit (2) processes a digital signal from an AD conversion unit (1). The signal processing unit (2) includes a filter unit (4) and a memory unit (5) for accumulating filter coefficient data. An FIR filter (40) and an F...
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JP2012231257A |
To provide a sampling frequency conversion device that converts a sampling frequency for an input signal at a fractional ratio as calculating only necessary sample signals.The sampling frequency conversion device includes an interpolatio...
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JP2012227594A |
To provide a decimation filter that implements a satisfactory filter characteristic without requiring many arithmetic devices.The decimation filter includes: an initial stage arithmetic unit having a buffer memory for selectively outputt...
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JP5068373B2 |
A signal processing circuit has two types of filters: an IIR filter 11 and an FIR filter 12 having an equivalent transfer function at all times. In an adjustment mode in which the signal processing circuit is adjusted to have an arbitrar...
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JP2012213076A |
To provide a digital signal processing apparatus and a digital signal processing method that employ a filter comprising a multistage series connection of IIR filters having a shelving characteristic (or stepping characteristic), set a pl...
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JP5061638B2 |
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JP5059508B2 |
A filter operation circuit of a microprocessor executes an IIR filter operation by using data provided from registers R0 to R2 and outputs one sample of data Y[n] subjected to filter operation and transfer data P[n] to be used in the nex...
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JP5054324B2 |
A noise-canceling device of a voice communication terminal that removes noise elements included in received voice-signals. The device comprises: a digital filter array (14) that exhibits filter qualities in response to a coefficient sett...
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JP5051116B2 |
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JP5045499B2 |
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JP2012191417A |
To improve the reproduction quality of audio or music included in digital audio data by eliminating data oversupply or data undersupply at a data reception circuit when the data reception circuit is not synchronized with a data transmiss...
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JP2012189779A |
To improve reproduction quality of audio or music contained in digital audio data without causing excessive data or data loss in a data receiving circuit when the data receiving circuit is out of synchronization with a data transmitting ...
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JP5032976B2 |
Television audio signal encoders include a matrix that sums a left channel audio signal and a right channel audio signal to produce a sum signal. The matrix also subtracts one of the left and right audio signals from the other to produce...
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JP5033101B2 |
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JP5036677B2 |
To provide a variable characteristic signal conversion apparatus and signal conversion method capable of playing back signals with sound quality and image quality according to user preferences for discrete data. In a signal conversion pr...
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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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JP5035254B2 |
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JP5034596B2 |
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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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JP5030068B2 |
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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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JP5029200B2 |
An optical transceiver and a method to setup the optical transceiver are disclosed, where the transceiver has a function to compensate the distortion and the dispersion due to the limited bandwidth of the electrical signal line, that of ...
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JP5023434B2 |
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JP5022577B2 |
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JP5018499B2 |
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