Echo return loss required for acoustic echo canceller based on subjective assessment. - Hiroshi Yasukawa; Masakazu Nishino; Kaoru Ishimaru; Hideyo Murakami (ICASSP, 1986)

Acoustic echo canceller with high speech quality. - Hiroshi Yasukawa; Shoji Shimada; Isao Furukawa (ICASSP, 1987)

Acoustic echo control for high quality audio teleconferencing. - Hiroshi Yasukawa; Isao Furukawa; Yasuzou Ishiyama (ICASSP, 1989)

An acoustic echo canceller using subband sampling and decorrelation methods. - Hiroshi Yasukawa; Shoji Shimada (IEEE Trans. Signal Process., 1993)

Quality enhancement of band limited speech by filtering and multirate techniques. - Hiroshi Yasukawa (ICSLP, 1994)

Enhancement of telephone speech quality by simple spectrum extrapolation method. - Hiroshi Yasukawa (EUROSPEECH, 1995)

Signal restoration of broad band speech using nonlinear processing. - Hiroshi Yasukawa (EUSIPCO, 1996)

Adaptive digital filtering for signal reconstruction using spectrum extrapolation. - Hiroshi Yasukawa (EUSIPCO, 1996)

Implementation of frequency domain digital filter for speech enhancement. - Hiroshi Yasukawa (ICECS, 1996)

Restoration of wide band signal from telephone speech using linear prediction error processing. - Hiroshi Yasukawa (ICSLP, 1996)

Signal processing and sonification of seismic electromagnetic radiation in ELF band. - Seiji Adachi; Hiroshi Yasukawa; Ichi Takumi; Masayasu Hata (EUSIPCO, 2000)

A Dynamic Flexible Grouping over COBRA-based Network and its Application to Mobile Computing. - Takashi Okuda; Seiji Adachi; Tetsuo Ideguchi; Hiroshi Yasukawa; Xuejun Tian (SAC (2), 2000)

Signal detection and processing of seismic electromagnetic radiation in ELF band. - Hiroshi Yasukawa; Seiji Adachi; Masayasu Hata; Ichi Takumi (ICECS, 2001)

A simple signal detection method for great earthquake prediction by observation of seismic electromagnetic wave radiations. - Hiroshi Yasukawa; Shinji Niwa; Masayasu Hata; Ichi Takumi (EUSIPCO, 2002)

Clustering of EM radiation source based on eigenvector. - Ichi Takumi; Shuhei Murakami; Akio Shimura; Masayasu Hata; Hiroshi Yasukawa (IGARSS, 2002)

Estimation of EM radiation source in ELF band. - Ichi Takumi; Shoichi Saito; Akio Shimura; Masayasu Hata; Hiroshi Yasukawa (IGARSS, 2002)

A source estimation method to locate anomalous electromagnetic source in ELF band with global noise separation by ICA. - Nobukazu Kodera; Ichi Takumi; Masayasu Hata; Hiroshi Yasukawa (IGARSS, 2003)

Study on analysis of EM radiation source based on eigenvector. - Shuhei Murakami; Ichi Takumi; Masayasu Hata; Hiroshi Yasukawa (IGARSS, 2003)

The precursor signal detection from electromagnetic waves for predicting great earthquakes using Kalman filter. - Shinji Niwa; Hiroshi Yasukawa; Ichi Takumi; Masayasu Hata (IGARSS, 2003)

Study on locating simulation of EM radiation source and transfer characteristic in ELF electromagnetic field. - M. Saito; Hiroshi Yasukawa (IGARSS, 2003)

A Study on Precursor Signal Extraction with PCA for Predicting Significant Earthquakes. - Shinji Niwa; Hiroshi Yasukawa; Ichi Takumi; Masayasu Hata (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2003)

Precursor signal estimation using ELF band observations for predicting earthquakes using Monte Carlo filter. - Shinji Niwa; Akitoshi Itai; Hiroshi Yasukawa; Ichi Takumi; Masayasu Hata (EUSIPCO, 2004)

Personal Identification Using Footstep Detection in In-Door Environment. - Yasuhiro Shoji; Akitoshi Itai; Hiroshi Yasukawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

Footstep Recognition with Psyco-acoustics Parameter. - Akitoshi Itai; Hiroshi Yasukawa (APCCAS, 2006)

Abrupt noise rejection using wavelet transform for electromagnetic wave observation signals. - Akitoshi Itai; Hiroshi Yasukawa; Ichi Takumi; Masayasu Hata (EUSIPCO, 2006)

Global signal elimination from ELF band electromagnetic signals by Independent Component Analysis. - Motoaki Mouri; Arao Funase; Andrzej Cichocki; Ichi Takumi; Hiroshi Yasukawa; Masayasu Hata (EUSIPCO, 2006)

Global Noise Elimination from ELF Band Electromagnetic Signals by Independent Component Analysis. - Motoaki Mouri; Arao Funase; Andrzej Cichocki; Ichi Takumi; Hiroshi Yasukawa; Masayasu Hata (ICA, 2006)

Applying Non-negative Matrix Factorization for global signal elimination from electromagnetic signals. - Motoaki Mouri; Arao Funase; Andrzej Cichocki; Ichi Takumi; Hiroshi Yasukawa; Masayasu Hata (EUSIPCO, 2007)

Sound Localization of Approaching Vehicles Using Uniform Microphone Array. - Kenji Kodera; Akitoshi Itai; Hiroshi Yasukawa (ITSC, 2007)

Residual Salinity Detection on Road Surface Using Neural Network. - Muneo Yamada; Hiroshi Yasukawa; Tetsuya Tanizaki; Koji Ueda (ITSC, 2007)

Global Noise Estimation Based on Tensor Product Expansion with Absolute Error. - Akitoshi Itai; Hiroshi Yasukawa; Ichi Takumi; Masayasu Hata (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

Background signal estimation from multi-sensor signals based on outer product and non-linear filters. - Akitoshi Itai; Hiroshi Yasukawa (EUSIPCO, 2008)

Improvement of Earthquake Prediction by using Global Signal Elimination from Environmental Electromagnetic Signals. - Motoaki Mouri; Arao Funase; Ichi Takumi; Andrzej Cichocki; Hiroshi Yasukawa; Masayasu Hata (IGARSS (5), 2008)

Detection of Anomalous Environmental Electromagnetic Wave by Statistical Property in Magnetic Field Azimuth. - Tokiyasu Sato; Ichi Takumi; Masayasu Hata; Hiroshi Yasukawa (IGARSS (3), 2008)

Footstep classification using simple speech recognition technique. - Akitoshi Itai; Hiroshi Yasukawa (ISCAS, 2008)

Frequency offset compensation for OFDM receiver using rotating concyclic antenna. - Daisuke Mizukami; Kenji Kodera; Hiroshi Yasukawa (ISCAS, 2008)

Global Signal Elimination and Local Signals Enhancement from EM Radiation Waves Using Independent Component Analysis. - Motoaki Mouri; Arao Funase; Andrzej Cichocki; Ichi Takumi; Hiroshi Yasukawa; Masayasu Hata (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2008)

Implementation of matrix factorization based on minimizing quasi-absolute distance for electromagnetic global signal elimination. - Motoaki Mouri; Arao Funase; Andrzej Cichocki; Ichi Takumi; Hiroshi Yasukawa; Masayasu Hata (EUSIPCO, 2009)

Detection and Radiation Area Estimation of Anomalous Environmental Electromagnetic Wave Related to Earthquake Precursor. - Tokiyasu Sato; Ichi Takumi; Masayasu Hata; Hiroshi Yasukawa (IGARSS (4), 2009)

EOG-related noise rejection in EEG signal with eye movement task by tensor product expansion with absolute error. - Akitoshi Itai; Arao Funase; Andrzej Cichocki; Hiroshi Yasukawa (EUSIPCO, 2010)

HMM based anomalous signal detection from ELF electromagnetic wave signals. - Yoshinao Ito; Akitoshi Itai; Hiroshi Yasukawa; Ichi Takumi; Masayasu Hata (EUSIPCO, 2010)

A study on anomalous signal detection using HMM for ELF electromagnetic wave. - Yoshinao Ito; Akitoshi Itai; Hiroshi Yasukawa; Ichi Takumi; Masayasu Hata (IGARSS, 2010)

A saccade-related noise reduction in EEG signals using outer product expansion with reference signal. - Akitoshi Itai; Arao Funase; Andrzej Cichocki; Hiroshi Yasukawa (EUSIPCO, 2011)

Rotating a circular array antenna to improve performance of OFDM receivers. - Hironori Ogihara; Hiroshi Yasukawa (ICSPCS, 2011)

Performance of anomalous signal detection with HMM approach in electromagneticwave observation using moving window. - Yoshinao Ito; Akitoshi Itai; Hiroshi Yasukawa; Ichi Takumi; Masayasu Hata (IGARSS, 2011)

Analysis of environmental electromagnetic signal using nonnegative Matrix Factorization minimizing quasi-L1 norm. - Motoaki Mouri; Arao Funase; Andrzej Cichocki; Ichi Takumi; Hiroshi Yasukawa (IGARSS, 2011)

OFDM Receiver Performance Using Rotating Circular Array Antenna for Vehicle Communications. - Hironori Ogihara; Hiroshi Yasukawa (VTC Spring, 2011)

Rotation speed control method for OFDM receiver using rotating circular array antenna. - Hironori Ogihara; Hiroshi Yasukawa (WCNC, 2011)

Improvement of contour extraction precision of active contour model with structuring elements. - Satoshi Urata; Hiroshi Yasukawa (ICASSP, 2012)

A study on clustering for anomalous signal detections from electromagnetic wave data. - Satoshi Urata; Hiroshi Yasukawa; Akitoshi Itai; Ichi Takumi (IGARSS, 2012)

Non-linear filter based outer product expansion with reference signal for EEG analysis. - Akitoshi Itai; Arao Funase; Andrzej Cichocki; Hiroshi Yasukawa (ISCAS, 2012)

Evaluation of human detection system with one-way communication. - Kodai Yokoo; Hiroshi Yasukawa (ISPACS, 2012)

A study on test image production using frequency domain correlation with convex function for radiographic inspection equipments. - Yoichi Kato; Tetsuya Tanizaki; Hiroshi Yasukawa (ISIE, 2013)

Revising algorithm for nonnegative matrix factorization based on minimizing quasi-L1 norm. - Motoaki Mouri; Ichi Takumi; Hiroshi Yasukawa; Andrzej Cichocki (APCCAS, 2014)

A study on footstep detection in outdoor environment using Itakura-Saito distance. - Shota Tanaka; Akitoshi Itai; Hiroshi Yasukawa (APCCAS, 2014)

A study of using nonnegative matrix factorization to detect solder-voids from radiographic images of solder. - Motoaki Mouri; Yoichi Kato; Hiroshi Yasukawa; Ichi Takumi (ISIE, 2014)

The Background Noise Estimation in the ELF Electromagnetic Wave Data Using Outer Product Expansion with Non-linear Filter. - Akitoshi Itai; Hiroshi Yasukawa; Ichi Takumi; Masayasu Hata (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2014)

Foreword. - Hiroshi Yasukawa; Akira Asano (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2014)

Improvement of background signal reduction using modified trimmed mean based outer product expansion. - Akitoshi Itai; Hiroshi Yasukawa; Ichi Takumi; Masayasu Hata (ICICS, 2015)

Incorporation of blind source separation in X-ray energy subtraction for extracting solder bumps. - Motoaki Mouri; Hiroshi Yasukawa; Ichi Takumi (ISIE, 2016)

Implementation of valid and stable algorithm of QL1-NMF for analyzing environmental elf magnetic signals. - Motoaki Mouri; Ichi Takumi; Hiroshi Yasukawa (IGARSS, 2017)

Reference Signal Based Tensor Product Expansion for EOG-Related Artifact Separation in EEG. - Akitoshi Itai; Arao Funase; Andrzej Cichocki; Hiroshi Yasukawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2017)

Development of Reliable and Stable QL1-NMF Algorithm for Analyzing Environmental ELF Magnetic Signals. - Motoaki Mouri; Ichi Takumi; Hiroshi Yasukawa (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2018)

A Study on Features Extraction for HMM Based Anomalous Signal Detection from Waveform Images of ELF Magnetic Signals. - Motoaki Mouri; Akitoshi Itai; Hiroshi Yasukawa; Ichi Takumi (IGARSS, 2019)