Posture stability control of a small inverted pendulum robot in trajectory tracking using a control moment gyro

K Tanaka, S Nagasawa - Advanced Robotics, 2020 - Taylor & Francis
This paper reports on a posture stability control method for an inverted pendulum robot
using a control moment gyro (CMG) mounted on the top of the inverted pendulum. As an …

Online speech source separation based on maximum likelihood of local Gaussian modeling

M Togami - 2011 IEEE International Conference on Acoustics …, 2011 - ieeexplore.ieee.org
We propose an online speech source separation method which can separate sources under
underdetemined conditions. The proposed method is based on local Gaussian modeling …

Simultaneous optimization of forgetting factor and time-frequency mask for block online multi-channel speech enhancement

M Togami - ICASSP 2019-2019 IEEE International Conference …, 2019 - ieeexplore.ieee.org
In this paper, we propose a block-online multi-channel speech enhancement technique
which simultaneously optimizes time-frequency masks and forgetting factors for estimation of …

DOA estimation method based on sparseness of speech sources for human symbiotic robots

M Togami, A Amano, T Sumiyoshi… - 2009 IEEE International …, 2009 - ieeexplore.ieee.org
In this paper, direction of arrival (DOA) estimation methods (both azimuth and elevation)
based on sparseness of human speech," modified delay-and-sum beamformer based on …

[PDF][PDF] Sparseness-Aware DOA Estimation with Majorization Minimization.

M Togami, R Scheibler - INTERSPEECH, 2020 - interspeech2020.org
We propose a direction-of-arrival (DOA) estimation technique which assumes that speech
sources are sufficiently sparse and there is only one active speech source at each time …

[PDF][PDF] Sound Source Localization with Majorization Minimization.

M Togami, R Scheibler - Interspeech, 2021 - isca-archive.org
We propose a sound source localization technique that estimates a speech source location
without precise grid searching. The source location is estimated in a parameter optimization …

Head orientation estimation of a speaker by utilizing kurtosis of a DOA histogram with restoration of distance effect

M Togami, Y Kawaguchi - 2010 IEEE International Conference …, 2010 - ieeexplore.ieee.org
In this paper, we propose a head-orientation estimation method from multichannel acoustic
signals. Sharpness of a DOA histogram which is extracted by using the sparseness based …

Refinement of direction of arrival estimators by majorization-minimization optimization on the array manifold

R Scheibler, M Togami - ICASSP 2021-2021 IEEE International …, 2021 - ieeexplore.ieee.org
We propose a generalized formulation of direction of arrival estimation that includes many
existing methods such as steered response power, subspace, coherent and incoherent, as …

A multi-source localization method based on clustering and outlier removal

S Gao, M Jia, C Bao - 2021 Asia-Pacific Signal and Information …, 2021 - ieeexplore.ieee.org
Multiple sound source localization is a hot topic of concern in recent years. In this paper, a
multi-source localization method based on weight clustering and outlier removal is proposed …

Beamforming array technique with clustered multichannel noise covariance matrix for mechanical noise reduction

M Togami, T Sumiyoshi, Y Obuchi… - 2010 18th European …, 2010 - ieeexplore.ieee.org
In this paper, we propose a novel multichannel noise reduction method for a mechanical
noise with a time-variant impulse response. The mechanical noise source location moves …