Akira IKUTA


Adaptive Noise Suppression Algorithm for Speech Signal Based on Stochastic System Theory
Akira IKUTA Hisako ORIMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/08/01
Vol. E94-A  No. 8  pp. 1618-1627
Type of Manuscript:  Special Section PAPER (Special Section on Advances in Adaptive Signal Processing and Applications)
Category: 
Keyword: 
noise suppressionspeech signalstochastic systemadaptive algorithmactual environment
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Static and Dynamic Signal Processing Methods for Noise Cancellation in Sound and Electromagnetic Environment
Hisako MASUIKE Akira IKUTA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/03/01
Vol. E92-A  No. 3  pp. 753-761
Type of Manuscript:  Special Section PAPER (Special Section on Latest Advances in Fundamental Theories of Signal Processing)
Category: 
Keyword: 
noise cancellationbackground noiseleast mean squared methodsound amd electromagnetic environment
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A Digital Filter for Stochastic Systems with Unknown Structure and Its Application to Psychological Evaluation of Sound Environment
Akira IKUTA Hisako MASUIKE Mitsuo OHTA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2005/07/01
Vol. E88-D  No. 7  pp. 1519-1525
Type of Manuscript:  Special Section PAPER (Special Section on Recent Advances in Circuits and Systems--Part 1)
Category: Adaptive Signal Processing
Keyword: 
unknown structural systemquantized observationdigital filterpsychological evaluationsound environment
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A Cancellation Method of Background Noise for a Sound Environment System with Unknown Structure
Akira IKUTA Osman TOKHI Mitsuo OHTA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/02/01
Vol. E84-A  No. 2  pp. 457-466
Type of Manuscript:  Special Section PAPER (Special Section on Noise Cancellation and Reduction Techniques)
Category: Noise Cancellation for Acoustic System
Keyword: 
cancellation of background noiseunknown structuresound environment system
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A State Estimation Method in Acoustic Environment Based on Fuzzy Observation Contaminated by Background Noise Utilization of Inverse Probability and Digital Filter
Akira IKUTA Mitsuo OHTA Noboru NAKASAKO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/05/25
Vol. E80-A  No. 5  pp. 825-832
Type of Manuscript:  Special Section PAPER (Special Section on Acoustical Inverse Problems)
Category: 
Keyword: 
state estimationfuzzy observationinverse probabilityacoustic environment
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Some New Type Regression Analysis Methods for Acoustic Environmental System Based on the Introduction of Multiplicative Noise
Mitsuo OHTA Akira IKUTA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/01/25
Vol. E78-A  No. 1  pp. 123-126
Type of Manuscript:  LETTER
Category: Acoustics
Keyword: 
regression analysismultiplicative noiseprediction of response probabilityacoustic environment
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Establishment of Nonlinear ARMA Model for Non-Gaussian Stochastic Process and Its Application to Time Series Data of Road Traffic Noise
Akira IKUTA Mitsuo OHTA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/08/25
Vol. E77-A  No. 8  pp. 1345-1352
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
nonlinear ARMA modelnon-Gaussian processtime series modelacoustic environment
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A Signal Processing for Generalized Regression Analysis with Less Information Loss Based on the Observed Data with an Amplitude Limitation
Mitsuo OHTA Akira IKUTA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1993/09/25
Vol. E76-A  No. 9  pp. 1485-1487
Type of Manuscript:  Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
Improved Regression AnalysisObservation with Amplitude LimitationPrediction of Response ProbabilitySound EnvironmentNonlinear Correlation
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An Estimation Method of Probability Distribution for a Specific Stochastic Signal Contaminated by an Additional Noise Based on the Arbitrarily Quantized Level Observation
Mitsuo OHTA Akira IKUTA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1992/09/25
Vol. E75-A  No. 9  pp. 1046-1051
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
estimation of probability functionquantized level observationstochastic signal processingnoise removalacoustic environment
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A State Estimation Method of Impulsive Signal Using Digital Filter under the Existence of External Noise and Its Application to Room Acoustics
Akira IKUTA Mitsuo OHTA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1992/08/25
Vol. E75-A  No. 8  pp. 988-995
Type of Manuscript:  Special Section PAPER (Special Section on the 6th Digital Signal Processing Symposium)
Category: 
Keyword: 
state estimationimpulsive signaldigital filterroom acoustic
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A New Restoration Method for Medical X-Ray Images with Optical Blurs and Quantum Mottles
Mitsuo OHTA Akira IKUTA Yasuo MITANI Yoshie KODERA Masaaki OGAWA Minoru FUJITA Takuro WADA 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1990/05/25
Vol. E73-E  No. 5  pp. 670-678
Type of Manuscript:  Special Section PAPER (Special Issue on Information Theory and Its Applications)
Category: 
Keyword: 
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A Stochastic Signal Processing of Analog and Digital Types for Acoustic Random Power State Variable and an Establishment of Digital Filter
Mitsuo OHTA Akira IKUTA Yasuo MITANI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1989/05/25
Vol. E72-E  No. 5  pp. 521-530
Type of Manuscript:  Special Section PAPER (Special Issue on Information Theory and Its Applications)
Category: 
Keyword: 
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A Stochastic Signal Processing of Incomplete Observation Data with Amplitude Limitation and State Estimation under the Existence of Additional Noise
Mitsuo OHTA Akira IKUTA Naomitsu TAKAKI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1988/01/25
Vol. E71-E  No. 1  pp. 8-15
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
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