Kensaku FUJII


A Step Size Control Method Improving Estimation Speed in Double Talk Term
Takuto YOSHIOKA Kana YAMASAKI Takuya SAWADA Kensaku FUJII Mitsuji MUNEYASU Masakazu MORIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/07/01
Vol. E96-A  No. 7  pp. 1543-1551
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
echo cancellerdouble talkstep size controlblock length controltarget error level control
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Normalization Method of Gradient Vector in Frequency Domain Steepest Descent Type Adaptive Algorithm
Yusuke KUWAHARA Yusuke IWAMATSU Kensaku FUJII Mitsuji MUNEYASU Masakazu MORIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/11/01
Vol. E95-A  No. 11  pp. 2041-2045
Type of Manuscript:  Special Section LETTER (Special Section on Smart Multimedia & Communication Systems)
Category: Digital Signal Processing
Keyword: 
Normalization of gradient vectorfrequency domainadaptive algorithmdiscrete Fourier transformlinear convolution
 Summary | Full Text:PDF

Application of Simultaneous Equations Method to ANC System with Non-minimum Phase Secondary Path
Kensaku FUJII Kenji KASHIHARA Isao WAKABAYASHI Mitsuji MUNEYASU Masakazu MORIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/07/01
Vol. E95-A  No. 7  pp. 1109-1116
Type of Manuscript:  PAPER
Category: Noise and Vibration
Keyword: 
non-minimum phaselattice filtercascade connectionrecursive filternon-recursive filter
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Application of Cascade Connection of Recursive and Non-recursive Filters to Active Noise Control System Using Simultaneous Equations Method
Kensaku FUJII Kenji KASHIHARA Mitsuji MUNEYASU Masakazu MORIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/10/01
Vol. E94-A  No. 10  pp. 1899-1906
Type of Manuscript:  PAPER
Category: Noise and Vibration
Keyword: 
simultaneous equations methodlattice filteractive noise controlrecursive filternon-recursive filterauxiliary filter
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A Low Processing Cost Adaptive Algorithm Identifying Nonlinear Unknown System with Piecewise Linear Curve
Kensaku FUJII Ryo AOKI Mitsuji MUNEYASU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/04/01
Vol. E92-A  No. 4  pp. 1129-1135
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
acoustic echo cancellernonlinearitypiecewise linear curveoutput erroradaptive filter
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A Variable Step Size Algorithm for Speech Noise Reduction Method Based on Noise Reconstruction System
Naoto SASAOKA Masatoshi WATANABE Yoshio ITOH Kensaku FUJII 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/01/01
Vol. E92-A  No. 1  pp. 244-251
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
noise reductionadaptive filtersystem identificationNLMS algorithmvariable step size
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A Flexible Gaze Detection Method Using Single PTZ Camera
Masakazu MORIMOTO Kensaku FUJII 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2007/01/01
Vol. E90-D  No. 1  pp. 199-207
Type of Manuscript:  Special Section PAPER (Special Section on Advanced Image Technology)
Category: 
Keyword: 
eye gaze detectionfacial directionviewing point detectionface tracking
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An Active Noise Control System Based on Simultaneous Equations Method without Auxiliary Filters
Mitsuji MUNEYASU Osamu HISAYASU Kensaku FUJII Takao HINAMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/04/01
Vol. E89-A  No. 4  pp. 960-968
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 18th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
active noise controlsimultaneous equations methodauxiliary filtermultiple channeladaptive filter
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A Noise Reduction System for Wideband and Sinusoidal Noise Based on Adaptive Line Enhancer and Inverse Filter
Naoto SASAOKA Keisuke SUMI Yoshio ITOH Kensaku FUJII Arata KAWAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/02/01
Vol. E89-A  No. 2  pp. 503-510
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
noise reductionadaptive line enhancerinverse filterfeedback path
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Performance Improvement for Distributed Active Noise Control Systems Based on Simultaneous Equations Method
Mitsuji MUNEYASU Ken'ichi KAGAWA Kensaku FUJII Takao HINAMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/07/01
Vol. E88-A  No. 7  pp. 1760-1764
Type of Manuscript:  Special Section LETTER (Special Section on Multi-channel Acoustic Signal Processing)
Category: 
Keyword: 
active noise controlmultiple-channel systemdistributed control
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A Noise Reduction Method for Non-stationary Noise Based on Noise Reconstruction System with ALE
Naoto SASAOKA Yoshio ITOH Kensaku FUJII 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/02/01
Vol. E88-A  No. 2  pp. 593-596
Type of Manuscript:  LETTER
Category: Digital Signal Processing
Keyword: 
noise reductionlinear predictionsystem identificationadaptive line enhancer
 Summary | Full Text:PDF

Distributed Active Noise Control Systems Based on Simultaneous Equations Methods
Mitsuji MUNEYASU Yumi WAKASUGI Ken'ichi KAGAWA Kensaku FUJII Takao HINAMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/04/01
Vol. E87-A  No. 4  pp. 807-815
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 16th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
active noise controlmultiple channeldistributed controlnoise reductionsimultaneous equations method
 Summary | Full Text:PDF

Application of a Frequency Domain Processing Technique to the Simultaneous Equations Method
Kensaku FUJII Shigeyuki HASHIMOTO Mitsuji MUNEYASU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/08/01
Vol. E86-A  No. 8  pp. 2020-2027
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
active noise controlfeedforward typesecondary path filtercross spectrum methodpath change
 Summary | Full Text:PDF

A New Active Sinusoidal Noise Control System Using the Simultaneous Equations Technique
Kensaku FUJII Yoshihisa NAKATANI Mitsuji MUNEYASU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/08/01
Vol. E85-A  No. 8  pp. 1877-1881
Type of Manuscript:  Special Section LETTER (Special Section on Digital Signal Processing)
Category: Adaptive Signal Processing
Keyword: 
active noise controlsinusoidal noisesecondary pathsimultaneous equations technique
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A New Noise Reduction Method Using Estimated Noise Spectrum
Arata KAWAMURA Kensaku FUJII Yoshio ITOH Yutaka FUKUI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/04/01
Vol. E85-A  No. 4  pp. 784-789
Type of Manuscript:  Special Section PAPER (Special Section of Selected Papers from the 14th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
noise reductionlinear predictionadaptive digital filtersignal whiteningnoise reconstruction
 Summary | Full Text:PDF

Analysis on the Convergence Property of the Sub-RLS Algorithm
Kensaku FUJII Mitsuji MUNEYASU Takao HINAMOTO Yoshinori TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/10/01
Vol. E84-A  No. 10  pp. 2591-2594
Type of Manuscript:  LETTER
Category: Digital Signal Processing
Keyword: 
sub-RLS algorithmconvergence conditionLS algorithmRLS algorithmmaximum eigenvalue
 Summary | Full Text:PDF

Analysis on the Convergence Property of Quantized-x NLMS Algorithm
Kensaku FUJII Yoshinori TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/08/01
Vol. E84-A  No. 8  pp. 1840-1847
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: Adaptive Signal Processing
Keyword: 
convergence propertyconvergence conditionIIR filter expressionNLMS algorithmquantization step
 Summary | Full Text:PDF

Normalized Least Mean EE' Algorithm and Its Convergence Condition
Kensaku FUJII Mitsuji MUNEYASU Takao HINAMOTO Yoshinori TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/04/01
Vol. E84-A  No. 4  pp. 984-990
Type of Manuscript:  Special Section PAPER (Special Section on Acoustic Signal Processing)
Category: 
Keyword: 
linear predictioncorrelationreference signalcost functionconvergence condition
 Summary | Full Text:PDF

Hybrid Active Noise Control Systems Based on the Simultaneous Equations Method
Mitsuji MUNEYASU Yumi WAKASUGI Osamu HISAYASU Kensaku FUJII Takao HINAMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/02/01
Vol. E84-A  No. 2  pp. 479-481
Type of Manuscript:  Special Section LETTER (Special Section on Noise Cancellation and Reduction Techniques)
Category: Active Noise Control
Keyword: 
active noise controlsimultaneous equations methodhybrid system
 Summary | Full Text:PDF

Convergence Property of Tri-Quantized-x NLMS Algorithm
Kensaku FUJII Yoshinori TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/12/25
Vol. E83-A  No. 12  pp. 2739-2742
Type of Manuscript:  LETTER
Category: Digital Signal Processing
Keyword: 
tri-quantized-x NLMS algorithmconvergence propertyIIR filter expressionreference signalsigned regressor algorithm
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Analysis on Convergence Property of INLMS Algorithm Suitable for Fixed Point Processing
Kensaku FUJII Juro OHGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/08/25
Vol. E83-A  No. 8  pp. 1539-1544
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: Adaptive Signal Processing
Keyword: 
INLMS algorithmfixed point processingIIR filter expressionconvergence propertyconvergence condition
 Summary | Full Text:PDF

Acoustic Echo Canceller System Materialized with a 16-bit Fixed Point Processing Type DSP
Jun'ichi SAKAGUCHI Tsutomu HOSHINO Kensaku FUJII Juro OHGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/12/25
Vol. E82-A  No. 12  pp. 2818-2821
Type of Manuscript:  LETTER
Category: Acoustics
Keyword: 
acoustic echo cancellerINLMS algorithmquantized-x algorithmblock length adjustmentfixed point processing
 Summary | Full Text:PDF

A Practical Trial to Realize Active Noise Control System by a Fixed Point Processing Type DSP
Atsushi YAMAGUCHI Hiroyuki FURUYA Kensaku FUJII Juro OHGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/05/25
Vol. E80-A  No. 5  pp. 840-843
Type of Manuscript:  Special Section LETTER (Special Section on Acoustical Inverse Problems)
Category: 
Keyword: 
active noise controlfiltered-x algorithm'polarized-x' algorithmINLMS algorithmfixed point processing
 Summary | Full Text:PDF

Equation for Brief Evaluation of the Convergence Rate of the Normalized LMS Algorithm
Kensaku FUJII Juro OHGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/12/25
Vol. E76-A  No. 12  pp. 2048-2051
Type of Manuscript:  Special Section LETTER (Special Section of Letters Selected from the 1993 IEICE Fall Conference)
Category: 
Keyword: 
normalized LMS algorithmconvergence rateecho cancelleradaptive FIR filtertraining signal
 Summary | Full Text:PDF

Compensation for the Double-Talk Detection Delay in Echo Canceller Systems
Kensaku FUJII Juro OHGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/07/25
Vol. E76-A  No. 7  pp. 1143-1146
Type of Manuscript:  Special Section LETTER (Special Section of Letters Selected from the 1993 IEICE Spring Conference)
Category: 
Keyword: 
Echo cancellerDouble-talknormalized LMS algorithmIIR filter expressionStep gain
 Summary | Full Text:PDF

A Fast Adaptive Algorithm Suitable for Acoustic Echo Canceller
Kensaku FUJII Juro OHGA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1992/11/25
Vol. E75-A  No. 11  pp. 1509-1515
Type of Manuscript:  Special Section PAPER (Special Section on Acoustic System Modeling and Signal Processing)
Category: 
Keyword: 
fast adaptive algorithmacoustic echo cancellerIIR filter expressioncorrelation coefficient
 Summary | Full Text:PDF