Kenta NIWA


Integration of Spatial Cue-Based Noise Reduction and Speech Model-Based Source Restoration for Real Time Speech Enhancement
Tomoko KAWASE Kenta NIWA Masakiyo FUJIMOTO Kazunori KOBAYASHI Shoko ARAKI Tomohiro NAKATANI 
Publication:   
Publication Date: 2017/05/01
Vol. E100-A  No. 5  pp. 1127-1136
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
microphone arraybeamforming (BF)power spectral density (PSD) estimationGaussian mixture modelWiener filtering
 Summary | Full Text:PDF(2.1MB)

An Estimation Method of Sound Source Orientation Using Eigenspace Variation of Spatial Correlation Matrix
Kenta NIWA Yusuke HIOKA Sumitaka SAKAUCHI Ken'ichi FURUYA Yoichi HANEDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/09/01
Vol. E96-A  No. 9  pp. 1831-1839
Type of Manuscript:  PAPER
Category: Engineering Acoustics
Keyword: 
Microphone arraysound source orientationreflected soundtransfer functionspatial correlation matrix
 Summary | Full Text:PDF(2MB)

Selective Listening Point Audio Based on Blind Signal Separation and Stereophonic Technology
Kenta NIWA Takanori NISHINO Kazuya TAKEDA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2009/03/01
Vol. E92-D  No. 3  pp. 469-476
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
acoustic field representationblind source separationfrequency-domain independent component analysis (FD-ICA)spatial grouping
 Summary | Full Text:PDF(754.7KB)