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Matches 651 - 700 out of 5,200

Document Document Title
JP2012019370A
To adjust a notch filter automatically to minimize the oscillatory frequency components which are generated when the control band is widened.The adaptive notch filter comprises a notch filter which minimizes the natural frequency compone...  
JP2012019371A
To automatically adjust a notch filter group so as to suppress a plurality of resonances.An adaptive notch filter 10 comprises: a plurality of notch filters which are arranged in series in the control system and includes at least a first...  
JP4854826B2
Each filter processing element has a register of partial results equal to a number of different filters.  
JP4857446B2  
JP2012501152A
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 dete...  
JP4853343B2  
JP4845246B2
An adaptive channel equalizer (50) for processing a demodulated (18) VSB signal containing terrestrial broadcast high definition television information operates adaptively in blind, training, and decision-directed modes. The VSB signal i...  
JP2011259460A
To provide a data receiver and an adaptive equalizer circuit that can suppress a circuit size and reduce power consumption.A plurality of receiving circuits 2a to 2d are connected to transmission lines and receive data signals from the t...  
JP2011254140A
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...  
JP2011239262A
To provide an adaptive equalizer which can be stable and maintain equalization performance under the circumstance where obtained states of input data frequently change.An adaptive equalizer of the first mode of this invention equalizes r...  
JP4822946B2  
JP2011228803A
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...  
JP2011216955A
To provide a method for controlling a preamplifier by a simple method and a device materializing the method.A statistical information calculation circuit 50 included in a frequency characteristic compensation device, monitors a digital i...  
JP2011211706A
To provide a method for adaptive blind equalization of m PSK signals applicable to a much wider range, and to provide an equalizer therefor.An equalizer for a PSK signal includes a complex-conjugate calculator, an equalization coefficien...  
JP2011205533A
To obtain an adaptive equalizer, capable of preventing identification accuracy of a linear element from being reduced by the existence of a non-linear element in a transfer function.In a first signal converter 101 to a second signal conv...  
JP2011205692A
To provide a method for automatically determining an equalizing filter characteristic of an indoor communication system for a vehicular cabin.The indoor communication system includes at least one loudspeaker and at least one microphone. ...  
JP2011197011A
To vary coverage of a detection zone by changing a range gate in each antennal beam.A radar detection process includes computing a derivative of an FFT output signal to detect an object within a specified detection zone. A zero crossing ...  
JP4780904B2  
JP2011188357A
To provide a digital filter in which high-speed, high-accuracy and real-time filter processing can be obtained, by introducing and setting as a variable a value relating to the correlation of an error signal, an input signal and an outpu...  
JP4775596B2  
JP4778007B2  
JP2011182349A
To provide an adaptive filter in which quasi-odd symmetry is utilized to further accelerate a convergence speed in comparison with an adaptive filter based on half memory algorithm.An error signal output circuit 600 generates two kinds o...  
JP4773294B2  
JP4771657B2  
JP2011161965A
To provide an on-vehicle audio apparatus which can compensate an audio signal for natural noise in a cabin in terms of audibility upon consideration of a silencing amount of noise in the cabin by an active noise controller even when a ve...  
JP2011123389A
To suppress an echo caused by words spoken by a user, and a sound emitted from an acoustic device used by a user at a seat of an aircraft, etc., and to effectively reduce noise in the surrounding.A noise reducing device includes a plural...  
JP4708359B2  
JP4700871B2
Stereo echo cancellation is necessary to overcome the objections observed by, for example, teleconferencing, voice controlled video/audio apparatuses, etc. To improve the existing filters, an adaptive filter is used along with a signal p...  
JP4700054B2  
JP4699664B2  
JP4699479B2  
JP2011109478A
To provide a receiver for precisely and efficiently estimating a transmission path even when the transmission path is temporally changed.The receiver includes: an FFF 20 for multiplying tap coefficients for each tap through the use of a ...  
JP4690243B2
To solve the problem that, in a conventional noise reduction system, noise is emphasized for noise (periodic noise) including line spectrum components, while noise including continuous spectrum components is reduced very well. In a perio...  
JP2011103673A
To provide decision feedback equalization techniques to perform equalization in a manner to achieve good performance in a communication system.A channel impulse response is estimated and converted to obtain a channel frequency response a...  
JP2011103663A
To provide a filter apparatus and a method for filtering a time domain input signal, and a filter generator and a method for outputting an intermediate filter definition signal.The filter apparatus for filtering a time domain input signa...  
JP4681813B2  
JP4675327B2  
JP2011069901A
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 updated...  
JP4663630B2  
JP2011066664A
To solve the problem that a stereo acoustic coupling amount is obtained without obtaining a local solution even when there is no symmetry between a microphone and a speaker.Stereo acoustic coupling estimating technique includes a means f...  
JP2011060369A
To provide a filter coefficient control apparatus for adaptively determining a filter coefficient of a digital filter.The filter coefficient control apparatus adaptively calculates and outputs the filter coefficient of the digital filter...  
JP2011050114A
To provide a compact antenna element that operates in a high-density circuit environment, is relatively low-cost, and can be used to provide an array antenna having relatively higher performance.An antenna element includes a cover layer ...  
JP2011044798A
To obtain an effect equivalent to one to be obtained when a tap coefficient is extended without extending the bit width of the tap coefficient settable in a multiplier in a digital filter.A target tap coefficient made to be a numeric val...  
JP4632047B2  
JP4638134B2
An equalizer and an equalization method usable in a high definition television (HDTV) are provided. The equalizer may receive an input signal including a data signal and a training sequence and may compensate for distortion of the input ...  
JP2011022604A
To provide a signal processing method and a device achieving noise cancellation in which convergence time is short and distortion of output speech is small for input signals of a signal-to-noise ratio having a broad range at a speech inp...  
JP4616196B2  
JP2011010253A
To provide a control logic having the oscillating reducing effect in broad frequency band, and to provide a feedback control system.In a control logic for updating a filter coefficient while including convolution integration, only an err...  
JP2011010346A
To provide an improved technique for spectral envelope adjustment.The present invention proposes a new method for improving the performance of a real-valued filter bank based spectral envelope adjuster. By adaptively locking the gain val...  
JPWO2009038182A1
The system identification device which identifies the unknown system which intervenes between the 1st input terminal and the 2nd input terminal is constituted as follows. The adaptation filter and subordinate filter which consider as an ...  

Matches 651 - 700 out of 5,200