Tsuyoshi USAGAWA


Azimuthal and Elevation Localization Using Inter-Channel Phase and Level Differences for a Hemispheric Object
Yoshifumi CHISAKI Toshimichi TAKADA Masahiro NAGANISHI Tsuyoshi USAGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/10/01
Vol. E91-A  No. 10  pp. 3059-3062
Type of Manuscript:  LETTER
Category: Engineering Acoustics
Keyword: 
sound source localizationhemispheric objectsecurity camerafrequency domain binaural model
 Summary | Full Text:PDF(357.6KB)

On Bit Rate Reduction of Inter-Channel Communication for a Binaural Hearing Assistance System
Yoshifumi CHISAKI Ryouji KAWANO Tsuyoshi USAGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/08/01
Vol. E91-A  No. 8  pp. 2041-2044
Type of Manuscript:  Special Section LETTER (Special Section on Signal Processing)
Category: 
Keyword: 
frequency domain binaural modelhearing assistance systeminter-channel communication
 Summary | Full Text:PDF(287.3KB)

Spectral Subtraction Based on Statistical Criteria of the Spectral Distribution
Hidetoshi NAKASHIMA Yoshifumi CHISAKI Tsuyoshi USAGAWA Masanao EBATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/10/01
Vol. E85-A  No. 10  pp. 2283-2292
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
speech enhancementmusical noisespectral subtractionvariancehypothesis testing
 Summary | Full Text:PDF(957.7KB)

An Active Noise Control Headset for Crew Members of Ambulance
Tsuyoshi USAGAWA Yasuyuki SHIMADA Yoshitaka NISHIMURA Masanao EBATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/02/01
Vol. E84-A  No. 2  pp. 475-478
Type of Manuscript:  Special Section LETTER (Special Section on Noise Cancellation and Reduction Techniques)
Category: Active Noise Control
Keyword: 
ANCambulance sirendelayed-X harmonics synthesizer algorithmheadset
 Summary | Full Text:PDF(367.6KB)

A Signal Enhancement Method Using the Iterative Blind Deconvolution for Microphone Array System
Jin-Nam PARK Tsuyoshi USAGAWA Masanao EBATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/04/25
Vol. E82-A  No. 4  pp. 611-618
Type of Manuscript:  Special Section PAPER (Special Section on Advanced Signal Processing Techniques for Analysis of Acoustical and Vibrational Signals)
Category: 
Keyword: 
speech enhancementDSAalgorithm for multiple unknown signals extraction (AMUSE)coherency functioncost-functionsource estimation
 Summary | Full Text:PDF(723.5KB)

A New Adaptive Algorithm Focused on the Convergence Characteristics by Colored Input Signal: Variable Tap Length KMS
Tsuyoshi USAGAWA Hideki MATSUO Yuji MORITA Masanao EBATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1992/11/25
Vol. E75-A  No. 11  pp. 1493-1499
Type of Manuscript:  Special Section PAPER (Special Section on Acoustic System Modeling and Signal Processing)
Category: 
Keyword: 
acoustic echo cancelleradaptive FIR filterextension of NLMSconvergence by colored signalvariable tap length LMS
 Summary | Full Text:PDF(562KB)