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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| AP | 2023-10-20 10:55 |
Iwate | Iwate University (Primary: On-site, Secondary: Online) |
Consideration for mutual impedance and mutual radiation resistance of loop antenna arrays Nakato Kojima, Nobuyoshi Kikuma (NITech)  AP2023-123 |
Mutual coupling is a critical consideration in the design of an array antenna. Mutual coupling is expressed as a mutual... [more] |
AP2023-123 pp.133-138 |
| AP | 2022-10-20 10:55 |
Gifu | GIFU CITY CULTURE CENTER (Primary: On-site, Secondary: Online) |
Consideration on Mutual Coupling and Mutual Radiation Resistance of Array Antenna Nakato Kojima, Koichi Miyazaki (MELCO) AP2022-136 |
The mutual impedance and the mutual radiation resistance of the array antenna are expressed, using the fields expansion ... [more] | AP2022-136 pp.181-186 |
| EA, ASJ-H, EMM | 2020-11-20 09:00 |
Online | Online | [Poster Presentation]
Sound Field Recording Using Distributed Microphone Arrays Based on a Virtual Sphere Model Kosuke Katada, Shuichi Sakamoto (Tohoku Univ.) EA2020-23 EMM2020-38 |
Higher-order Ambisonics (HOA) is a sound field synthesis method based on wave equation. Sound field recorded at certain... [more] |
EA2020-23 EMM2020-38 pp.9-14 |
| EA, ASJ-H, ASJ-AA | 2019-07-17 11:25 |
Hokkaido | SAPPORO COMMUNITY PLAZA | Directivity synthesis using multipole sources based on higher spherical harmonic expansion
-- application to FDTD method -- Daichi Sakamoto, Takao Tsuchiya (Doshisha Univ.) EA2019-14 |
In this paper, a method to obtain arbitrary directivity patterns by FDTD method is considered, focusing on the directivi... [more] | EA2019-14 pp.71-76 |
| EA, US (Joint) |
2019-01-22 14:00 |
Kyoto | Doshisha Univ. | [Poster Presentation]
Binaural signal reproduction with perception of movement using spherical microphone array Takayuki Obayashi, Yoichi Haneda (UEC) EA2018-96 |
In recent years, a service has been proposed to improve immersion by adding a binaural signal to the omnidirectional ima... [more] | EA2018-96 pp.19-24 |
| EA, ASJ-H, EMM, IPSJ-MUS [detail] | 2018-11-21 13:30 |
Ishikawa | Hotel Koshuen | Directional pattern analysis of late reverberation using spherical microphone array Yuto Izumi, Makoto Otani (Kyoto Univ.) EA2018-65 EMM2018-65 |
Arrival direction of reflected sound is one of important factors to characterize spatial impression. An impulse response... [more] | EA2018-65 EMM2018-65 pp.13-18 |
| EA | 2018-10-12 10:00 |
Fukushima | Iwaki business Innovation Center (Iwaki) | Evaluation of shared sound field synthesis using spherical microphone array recoding Taku Shimizu, Jorge Trevino, Shuichi Sakamoto, Yo-iti Suzuki (Tohoku Univ.), Tomohiko Ise (Alpine) EA2018-58 |
Conventional sound field synthesis methods may require a large system because of synthesizing a huge control region to e... [more] | EA2018-58 pp.27-32 |
| RCS | 2018-04-23 11:20 |
Yamaguchi | Hotel New Tanaka, Yuda Onsen | Optimization of Beam Patterns for Analog Beamforming of Single User Massive MIMO Transmissions Maki Arai, Kei Sakaguchi, Kiyomichi Araki (Tokyo Inst. of Tech.) RCS2018-5 |
This paper proposes optimal beam patterns of analog beamforming for SU (Single User) massive MIMO (Multi-Input Multi-Out... [more] | RCS2018-5 pp.25-30 |
| EA | 2016-07-07 13:20 |
Shizuoka | Yamaha, Toyooka Factory | Post-filtering for reverberation suppression using priori DRR estimation on multiple isotropic beams Yuhei Yamamoto, Yoichi Haneda (UEC) EA2016-9 |
Reverberation often degenerates the quality of speech signals. The beamforming technique is a promising approach for s... [more] |
EA2016-9 pp.13-18 |
| EMT, IEE-EMT | 2015-10-29 10:50 |
Miyazaki | Holiday Inn ANA Resort Miyazaki | Quantum Numbers and Wave Functions of Spherical Standing Waves Yoshihiro Togami (Tezukayama Gakuin Univ.) EMT2015-50 |
The Spherical standing wave has a complex amplitude, and it is a wave existing within a certain limited area. From the ... [more] |
EMT2015-50 pp.13-18 |
| SIP, EA, SP | 2015-03-03 10:45 |
Okinawa | [Poster Presentation]
Directivity control of a dodecahedron loudspeaker array by using a minimum variance beamformer in a spherical harmonics domain. Kazuna Bando, Yoichi Haneda (UEC) EA2014-112 SIP2014-153 SP2014-175 |
This paper describes a directivity control method for a spherical loudspeaker array. The beam pattern of the spherical... [more] |
EA2014-112 SIP2014-153 SP2014-175 pp.219-224 |
|
| AP, SAT (Joint) |
2014-07-25 16:00 |
Gifu | Gero Citizen Hall | Antenna de-embedding and antenna-channel recombination of MIMO system: feasibility investigation in spherical wave domain Yang Miao, Jun-ichi Takada (Tokyo Inst. of Tech.), Katsuyuki Haneda (Aalto Univ.), Minseok Kim (Niigata Univ.) AP2014-71 SAT2014-24 |
Antenna de-embedding is to extract antennas from both ends of a MIMO system and to study the propagation channel only. A... [more] | AP2014-71 SAT2014-24 pp.131-134(AP), pp.69-72(SAT) |
| EA | 2014-04-17 15:30 |
Kyoto | NICT Universal Communication Research Lab. | Spherical harmonic encoding of moving sound sources Jorge Trevino (Tohoku Univ.), Takuma Okamoto (NICT), Yukio Iwaya (Tohoku Gakuin Univ.), Yo-iti Suzuki (Tohoku Univ.) EA2014-3 |
The spatial information of sound fields can be encoded using the spherical harmonic functions. This is often applied to ... [more] | EA2014-3 pp.19-24 |
| PRMU, MVE, IPSJ-CVIM (Joint) [detail] |
2013-01-24 11:10 |
Kyoto | Obtaining Shading Properties from Multi-Viewpoint Images Ryan Jones (Georgia Inst. of Tech.), Yasuhiro Yao, Harumi Kawamura, Akira Kojima (NTT) PRMU2012-114 MVE2012-79 |
Integrating virtual models into real environments requires realistic lighting and shading for believable results. Curren... [more] | PRMU2012-114 MVE2012-79 pp.275-280 |
|
| MVE, HI-SIG-VR | 2011-10-13 14:15 |
Hokkaido | An Approach to Estimating Illumination from Objects with Unknown Surface Re Yasuhiro Yao (NTT), Kazuyuki Iso (NTT West), Harumi Kawamura, Akira Kojima (NTT) MVE2011-37 |
In the field of mixed reality, attention is being focused on methods to display computer graphics (CG) objects in actual... [more] | MVE2011-37 pp.43-48 |
|
| EA | 2010-08-09 13:00 |
Miyagi | Tohoku Univ. | Implementation of a shperical 121-microphone array for recording sound field based on higher order Ambisonics Takuma Okamoto, Yukio Iwaya, Shuichi Sakamoto, Yo-iti Suzuki (Tohoku Univ.) EA2010-43 |
For realizing communications systems with very high sense-of-presence, technologies to record and re- produce three dime... [more] | EA2010-43 pp.1-6 |
| EA | 2010-06-10 15:15 |
Hokkaido | Health Sci. Univ. of Hokkaido | Decomposition of high order Ambisonic recordings for reproduction using irregular loudspeaker arrays Jorge Trevino, Takuma Okamoto, Yukio Iwaya, Yo-iti Suzuki (Tohoku Univ.) EA2010-25 |
Ambisonics is a technique for sound field synthesis and reproduction that has shown promising results for the presentati... [more] | EA2010-25 pp.19-24 |
| MW | 2010-03-04 17:10 |
Kyoto | Ryukoku Univ. | Double-directional channel with spherical harmonics Kenji Nakai, Jun-ichi Takada, Minseok Kim, Dashti Marzieh (Tokyo Inst. of Tech.), Tommi Laitinen (Helsinki Univ. of Tech.) MW2009-198 |
There is an approach that extracts or de-embeds the transmitting and receiving antennas from the multipath radio channel... [more] | MW2009-198 pp.113-117 |
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