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Search Results: Conference Papers
 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 24  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
SAT 2021-10-07
17:50
Online Online A potential cause of pulsive noises in receiving BS signals
Ryouichi Nishimura, Byeongpyo Jeong, Hajime Susukita, Takashi Takahashi (NICT) SAT2021-46
The level of receiving BS signals is affected by various factors such as precipitation in the atmosphere and the conditi... [more] SAT2021-46
pp.17-22
IE, EMM, LOIS, IEE-CMN, ITE-ME, IPSJ-AVM [detail] 2019-09-19
14:45
Niigata Tokimeito, Niigata University A study on the optimal acquisition interval for sample and hold signals
Ryouichi Nishimura (NICT) LOIS2019-10 IE2019-23 EMM2019-67
Micro Electro Mechanical Systems (MEMS) sensors are promising for IoT applications because they are small and available ... [more] LOIS2019-10 IE2019-23 EMM2019-67
pp.19-24
RCS, SAT
(Joint)
2019-08-23
09:30
Aichi Nagoya University Comparison of Speech Quality between Voice Communication System based on Communication Satellite Network and Satellite Mobile Phone
Byeongyo Jeong, Ryouichi Nishimura, Hajime Susukita, Takashi Takahashi (NICT) SAT2019-32
The mobile networks become almost useless under large-scale disasters due to physical damage of mobile base stations, el... [more] SAT2019-32
pp.79-83
EMM 2019-03-13
16:50
Okinawa TBD An attempt of source position estimation based on multipoint observation of infrasound
Zhenglie Cui, Ryosuke Sasahara (Tohoku Univ.), Ryouichi Nishimura (NICT), Yoiti Suzuki (Tohoku Univ.) EMM2018-110
Since infrasound travels in the atmosphere significantly faster than tsunami gravity waves, early detection of tsunamis ... [more] EMM2018-110
pp.101-104
SANE, SAT
(Joint)
2019-02-14
13:20
Kagoshima Tanegashima Island An attempt of rainfall estimation by monitoring broadcasting satellite combined with machine learning
Ryouichi Nishimura, Byeong-Pyo Jeong, Kazuyoshi Kawasaki, Takashi Takahashi (NICT) SAT2018-79
Signal level observed by a BS antenna will be attenuated when it rains because of the rain attenuation. Accordingly, it ... [more] SAT2018-79
pp.123-128
ASN
(2nd)
2018-11-29
17:20
Overseas Hanoi University of Science and Technology [Invited Lecture] Prototype of submerged stationary 360 camera and WiFi data transmission buoy for fishery ICT
Kiyohiko Hattori (Saitama), Katsuhiro Temma, Ryouichi Nishimura (NICT)
 [more]
EA 2018-10-11
14:30
Fukushima Iwaki business Innovation Center (Iwaki) A study on ship type identification by use of deep neural network
Ryouichi Nishimura, Katsuhiro Temma (NICT), Kiyohiko Hattori (Saitama Inst. of Tech.), Kenji Kaneko (TEAMS), Akinori Ito (Tohoku Univ.), Toyonobu Fujii (TEAMS), Akihiro Kijima (Tohoku Univ.) EA2018-54
Poaching has recently become a serious problem due to the globalization of food culture and the accompanied rising price... [more] EA2018-54
pp.1-6
SIP, EA, SP, MI
(Joint) [detail]
2018-03-20
09:00
Okinawa   [Poster Presentation] Optimization of Outdoor Loudspeaker Level Based on U50 for Disaster Prevention Administrative Radio
Ryouichi Nishimura (NICT), Shuichi Sakamoto (Tohoku Univ.), Yoshifumi Chisaki (Chiba Inst. of Tech.), Zhenglie Cui (Tohoku Univ.) EA2017-146 SIP2017-155 SP2017-129
Announcement through outdoor loudspeakers of disaster prevention administrative radio is important not only for early wa... [more] EA2017-146 SIP2017-155 SP2017-129
pp.245-250
SIP, EA, SP, MI
(Joint) [detail]
2018-03-20
09:00
Okinawa   [Poster Presentation] Design and implementation of resilient node networks for outdoor loudspeaker system
Yuki Ueda, Yoshifumi Chisaki (Chiba Inst. of Tech.), Shuichi Sakamoto (Tohoku Univ.), Ryouichi Nishimura (NICT), Cui Zhenglie (Tohoku Univ.) EA2017-147 SIP2017-156 SP2017-130
The outdoor loudspeaker system has some problems, and one of those is that a listener hears the multiple sounds from oth... [more] EA2017-147 SIP2017-156 SP2017-130
pp.251-254
SANE, SAT
(Joint)
2017-02-23
10:45
Chiba Katsuura Hotel Mikazuki A Study on Speech Quality Evaluation of VoIP Using WINDS
Byeong-pyo Jeong, Hajime Susukita, Ryouichi Nishimura, Takashi Takahashi, Morio Toyoshima, Shinichi Taira (NICT) SAT2016-64
 [more] SAT2016-64
pp.17-21
EA 2015-07-03
11:00
Tokyo The Univ. of Electro-Communications, 80th Anniversary Memorial Hall An attempt of speech signal reconstruction based on super resolution
Ryouichi Nishimura, Seigo Enomoto, Hiroaki Kato (NICT) EA2015-4
 [more] EA2015-4
pp.17-22
EA 2015-07-03
13:00
Tokyo The Univ. of Electro-Communications, 80th Anniversary Memorial Hall [Invited Talk] Auditory Control of Acoustic Space -- Reality and Individuality --
Kazuya Takeda (Nagoya University), Takanori Nishino (Mie University), Kenta Niwa (NTT), Yoichi Haneda (UEC), Hiroshi Saruwatari (The University of Tokyo), Ryouichi Nishimura (NICT) EA2015-5
One of typical goals of audio study is to create an enjoyable audio contents. Recent studies of audio technologies expan... [more] EA2015-5
pp.23-26
EMM 2014-03-08
14:20
Ishikawa JAIST Generating surround sound signals for headphone listening with high sense of reality by means of constrained weighted least squares
Ryouichi Nishimura (NICT), Kotaro Sonoda (Nagasaki Univ.) EMM2013-118
Considering that people watch video clips often on mobile terminals, we propose a method for surround sound mixing. In t... [more] EMM2013-118
pp.111-116
EA 2013-10-11
12:30
Kyoto NTT CS Lab. Sound field recording and reproduction by multiple parallel linear arrays using crosstalk cancellers in spatio-temporal frequency domain
Takuma Okamoto, Seigo Enomoto, Ryouichi Nishimura (NICT) EA2013-64
A novel signal processing for sound field recording and reproduction using parallel multiple linear microphone / loudspe... [more] EA2013-64
pp.1-8
EA, EMM 2012-11-17
14:10
Oita OITA Univ. Estimation of sound field based on inversion of Kirchhoff-Helmholtz integral equation and forward wave propagation
Takuma Okamoto, Seigo Enomoto, Ryouichi Nishimura (NICT) EA2012-105 EMM2012-87
We propose a novel sound field estimation method based on inversion of Kirchhoff-Helmholtz integral equation and forward... [more] EA2012-105 EMM2012-87
pp.141-146
EA, US
(Joint)
2012-01-26
16:00
Osaka Kansai Univ. [Invited Talk] Three-Dimensional Audio: Present and Future Perspective -- Current Research Focus at NICT --
Ryouichi Nishimura, Seigo Enomoto, Hiroaki Kato, Akiko Callan, Toshiyuki Kimura, Hironori Takemoto, Parham Mokhtari (NICT) US2011-94 EA2011-112
Towards practical use of three-dimensional audio, many research topics have to be solved. We have been tackling subjects... [more] US2011-94 EA2011-112
pp.47-52(US), pp.49-54(EA)
EMM 2011-11-15
15:00
Miyagi   Relationships between spectral distance correlation and sound localization in the median plane
Ryouichi Nishimura, Hiroaki Kato, Hironori Takemoto, Parham Mokhtari (NICT) EMM2011-54
Spatial audio technologies allow audio media to contain spatial information more flexibly than conventional stereo or su... [more] EMM2011-54
pp.83-88
EMM 2011-05-30
16:30
Tokyo National Inst. of Info. [Panel Discussion] Future of multimedia processing aimed by EMM
Akira Nishimura (Tokyo Univ. Info. Sci.), Isao Echizen (NII), Ryouichi Nishimura (NICT), Michiharu Niimi (Kyushu Inst. Tech.), Hirohisa Hioki (Kyoto Univ.), Naofumi Aoki (Hokkaido Univ.) EMM2011-7
 [more] EMM2011-7
pp.37-40
EA 2010-07-16
13:00
Tokyo RION Co., Ltd. A study on methods for solo play synthesis with a spherical speaker array
Yoko Yamakata (Kyoto Univ.), Ryouichi Nishimura, Michiaki Katsumoto, Toshiyuki Kimura (NICT) EA2010-38
We have constructed a spherical loudspeaker array that has 26 multi-channel loudspeakers on its surface and can reproduc... [more] EA2010-38
pp.1-6
EA 2008-12-04
14:45
Fukushima   Ear Canal Transfer Functions (ECTFs) in Listening through Headphones
Ryouichi Nishimura, Hironori Takemoto, Hiroaki Kato (NICT/ATR) EA2008-104
Head Related Transfer Functions (HRTFs) are usually defined as transfer functions from a sound source at various locatio... [more] EA2008-104
pp.19-24
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