Tetsuji OGAWA


Class-Distance-Based Discriminant Analysis and Its Application to Supervised Automatic Age Estimation
Tetsuji OGAWA Kazuya UEKI Tetsunori KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2011/08/01
Vol. E94-D  No. 8  pp. 1683-1689
Type of Manuscript:  PAPER
Category: Image Recognition, Computer Vision
Keyword: 
FDALFDACDDALCDDAdimensionality reductionautomatic age estimation
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Speech Enhancement Using a Square Microphone Array in the Presence of Directional and Diffuse Noise
Tetsuji OGAWA Shintaro TAKADA Kenzo AKAGIRI Tetsunori KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/05/01
Vol. E93-A  No. 5  pp. 926-935
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
directional noise reductiondiffuse noise reductionsquare microphone arrayspeech recognitionmobile devices
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Influence of Lombard Effect: Accuracy Analysis of Simulation-Based Assessments of Noisy Speech Recognition Systems for Various Recognition Conditions
Tetsuji OGAWA Tetsunori KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2009/11/01
Vol. E92-D  No. 11  pp. 2244-2252
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
Lombard effectsimulationassessmentnoisy speech recognition
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Ears of the Robot: Direction of Arrival Estimation Based on Pattern Recognition Using Robot-Mounted Microphones
Naoya MOCHIKI Tetsuji OGAWA Tetsunori KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/05/01
Vol. E91-D  No. 5  pp. 1522-1530
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
robot auditiondirection-of-arrival estimationpattern recognitionmultiple signal classificationcrosspower-spectrum phase
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Ears of the Robot: Three Simultaneous Speech Segregation and Recognition Using Robot-Mounted Microphones
Naoya MOCHIKI Tetsuji OGAWA Tetsunori KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2007/09/01
Vol. E90-D  No. 9  pp. 1465-1468
Type of Manuscript:  LETTER
Category: Speech and Hearing
Keyword: 
robot auditionsound source segregationspeech recognitionSAFIAspectral subtraction
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Genetic Algorithm Based Optimization of Partly-Hidden Markov Model Structure Using Discriminative Criterion
Tetsuji OGAWA Tetsunori KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/03/01
Vol. E89-D  No. 3  pp. 939-945
Type of Manuscript:  Special Section PAPER (Special Section on Statistical Modeling for Speech Processing)
Category: Speech Recognition
Keyword: 
acoustic modelhidden Markov modelpartly-hidden Markov modelweighted likelihood-ratio maximization criteriongenetic algorithmlecture talk speech recognition
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Extension of Hidden Markov Models for Multiple Candidates and Its Application to Gesture Recognition
Yosuke SATO Tetsuji OGAWA Tetsunori KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2005/06/01
Vol. E88-D  No. 6  pp. 1239-1247
Type of Manuscript:  PAPER
Category: Image Recognition, Computer Vision
Keyword: 
gesture recognitionHidden Markov Modelmultiple candidates of feature vectormobile robot
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