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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| CAS, CS | 2024-03-14 10:50 |
Okinawa | Group Delay Ripple Reduction Method for Sound Source Localization Using Wide Width Microphone Pairs Shunsuke Ase, Tomoya Hori, Kenji Suyama (Tokyo Denki Univ.)  CAS2023-114 CS2023-107 |
GRODMIC is a method proposed as a high spatial resolution source localization. Essential task of this method is an estim... [more] | CAS2023-114 CS2023-107 pp.17-22 |
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| OCS, OFT, IEE-CMN, ITE-BCT (Joint) [detail] |
2023-11-10 11:25 |
Kyoto | (Primary: On-site, Secondary: Online) |
Group Delay Characteristics of Hollow Core Photonic Bandgap Fiber Keishiro Iseri, Haruya Inamitsu, Toshio Watanabe, Tsutomu Nagayama, Seiji Fukushima (Kagoshima Univ.) OFT2023-54 |
In an application where low-latency communication is crucial, a hollow core photonic bandgap optical fiber (HC-PBGF) is ... [more] | OFT2023-54 pp.36-39 |
| OFT, OCS, LSJ (Joint) [detail] |
2023-08-24 14:50 |
Hokkaido | (Primary: On-site, Secondary: Online) |
A study on differential modal delay control by cabling parameter of high-density cable Masashi Kikuchi, Takayoshi Mori, Yusuke Yamada (NTT) OFT2023-9 |
Space Division Multiplexing optical fiber including few-mode fiber is promising technology for expanding transmission ca... [more] | OFT2023-9 pp.1-6 |
| CAS, CS | 2023-03-02 15:15 |
Fukuoka | Kitakyushu International Conference Center (Primary: On-site, Secondary: Online) |
Validation of the model order for source localization based on propagation delay estimation using adaptive filters Shunsuke Ase, Kenji Suyama (Tokyo denki univ.) CAS2022-121 CS2022-98 |
Microphone array localization is a technique for estimating the direction of a sound source based on the difference in a... [more] | CAS2022-121 CS2022-98 pp.145-149 |
| SP, IPSJ-SLP, EA, SIP [detail] | 2023-02-28 09:50 |
Okinawa | (Primary: On-site, Secondary: Online) |
Influence of Reflections in Small-Scale Anechoic Room Measurements Tatsuya Higuchi, Yutaka Kaneda, Kenji Suyama (Tokyo Denki Univ.) EA2022-81 SIP2022-125 SP2022-45 |
When measuring loudspeaker characteristics in an anechoic room, the results vary depending on the measurement position. ... [more] | EA2022-81 SIP2022-125 SP2022-45 pp.35-40 |
| OPE, OFT, OCS (Joint) [detail] |
2022-02-25 13:05 |
Online | Online | Group delay spread reduction using coupled multicore fibers with twist and bend Kazushi Homma, Takanori Sato, Takeshi Fujisawa (Hokkaido Uni.), Yuto Sagae, Taiji Sakamoto, Takashi Matsui, Kazuhide Nakajima (NTT), Kunimasa Saitoh (Hokkaido Uni.) OCS2021-49 OFT2021-79 OPE2021-64 |
We investigate mode coupling characteristics in coupled multicore fibers with twist and bend for reducing the group dela... [more] | OCS2021-49 OFT2021-79 OPE2021-64 pp.40-45(OCS), pp.49-54(OFT), pp.78-83(OPE) |
| EMM, EA, ASJ-H | 2021-11-16 09:00 |
Online | Online | [Poster Presentation]
Interactive visualization of EGG speech database based on analysis using time windows without sidelobes Hideki Kawahara (Wakayama Univ.), Kohei Yatabe (Waseda Univ.), Ken-Ichi Sakakibara (Health Science Univ. Hokkaido), Tatsuya Kitamura (Konan Univ.), Hideki Banno (Meijo Univ.), Masanori Morise (Meiji Univ.) EA2021-48 EMM2021-75 |
We introduce three objective measurement methods for speech signal periodicity using sidelobe-less windowing functions. ... [more] | EA2021-48 EMM2021-75 pp.120-127 |
| CAS, NLP | 2021-10-14 10:25 |
Online | Online | Performance Evaluation of All-Pass Fractional Delay Digital Filters under Coefficient Quantization Shunsuke Koshita (Hachinohe Inst. of Tech.) CAS2021-18 NLP2021-16 |
In this paper, performance of IIR fractional delay digital filters given by all-pass transfer functions is evaluated in ... [more] | CAS2021-18 NLP2021-16 pp.7-11 |
| OPE, LQE | 2020-11-20 15:30 |
Online | Online | The relationship between group index and group delay spread in coupled multicore fibers under macrobending condition Yuki Yasui, Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh (Hokkaido Univ.) OPE2020-60 LQE2020-40 |
We reveal the relationship between group index and group delay spread (GDS) in coupled multicore fibers for space divisi... [more] | OPE2020-60 LQE2020-40 pp.75-79 |
| OPE, LQE | 2020-11-20 15:30 |
Online | Online | Suppression of bending loss in coupled few-mode multicore fibers with outer trench layer Kenta Nishimura, Takeshi Fujisawa, Takanori Sato (Hokkaido Univ.), Taiji Sakamoto, Takashi Matsui, Yuto Sagae, Kazuhide Nakajima (NTT), Kunimasa Saitoh (Hokkaido Univ.) OPE2020-62 LQE2020-42 |
We propose a coupled few-mode multicore fiber with outer trench layer for suppressing both the group delay spread (GDS) ... [more] | OPE2020-62 LQE2020-42 pp.86-91 |
| SP, EA, SIP | 2020-03-03 12:35 |
Okinawa | Okinawa Industry Support Center (Cancelled but technical report was issued) |
Real-time visualization of reverberation time using frequency domain variants of velvet noise Hideki Kawahara (Wakayama Univ.), Ken-Ichi Sakakibara (Health Science Univ. Hokkaido), Mitsunori Mizumachi (Kyushu Inst. Tech.), Masanori Morise (Meiji Univ.), Hideki Banno (Meijo Univ.) EA2019-159 SIP2019-161 SP2019-108 |
We introduce a wavelet-based method for real-time visualization of reverberation time for extending acoustic measurement... [more] | EA2019-159 SIP2019-161 SP2019-108 pp.337-342 |
| EA, ASJ-H | 2019-10-29 13:00 |
Tokyo | NHK Science&Technology Research Lab. | Application of frequency domain variants of velvet noise to multi-aspect measurement of acoustic systems Hideki Kawahara (Wakayama Univ.), Ken-Ichi Sakakibara (Health Science Univ. Hokkaido), Mitsunori Mizumachi (Kyushu Inst. Tech.), Masanori Morise (Meiji Univ.), Hideki Banno (Meijo Univ.), Toshio Irino (Wakayama Univ.) EA2019-47 |
We introduce FVN (Frequency domain variants of Velvet Noise), a new member of TSP (Time Stretched Pulse), which consists... [more] | EA2019-47 pp.69-75 |
| OFT | 2019-05-16 14:00 |
Osaka | Ｉ-site NANBA | [Poster Presentation]
Measurement of spectral transfer matrix for DMD analysis by using linear optical sampling Yuki Osaka (Shimane Univ.), Fumihiko Ito, Daisuke Iida, Tetsuya Manabe (NTT) OFT2019-7 |
Mode-by-mode impulse responses, or spectral transfer matrix (STM) of birefringent fibers are measured by using linear op... [more] | OFT2019-7 pp.29-32 |
| EA, SIP, SP | 2019-03-15 10:00 |
Nagasaki | i+Land nagasaki (Nagasaki-shi) | Consideration on Effectiveness of Relative Phase from Residual Speech for Speaker Recognition Seiichi Nakagawa, Kazumasa Yamamoto, Kazumasa Yamamoto (Chubu Univ.) EA2018-130 SIP2018-136 SP2018-92 |
We have focused on phase spectrum for speaker recognition. So we proposed relative phase as a feature parameter for spea... [more] | EA2018-130 SIP2018-136 SP2018-92 pp.185-190 |
| OFT | 2019-01-17 14:10 |
Kagoshima | Tanegashima space center, Nishinoomote Civic Hall | A study of Group Delay Measurement Method by Using Brillouin Scattering Yuto Sagae, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima (NTT) OFT2018-63 |
Low latency transmissions are enthusiastically needed in today’s optical network. Especially in long distance transmissi... [more] | OFT2018-63 pp.9-13 |
| EA, ASJ-H, EMM, IPSJ-MUS [detail] | 2018-11-21 13:30 |
Ishikawa | Hotel Koshuen | An analytic signal with a cosine series envelope for excitation source analyses of voiced speech
-- Practical substitute of Flanagan's equation -- Hideki Kawahara (Wakayama Univ.), Ken-Ichi Sakakibara (Health Science Univ.), Hideki Banno (Meijyo Univ.), Masanori Morise (Univ. Yamanashi) EA2018-63 EMM2018-63 |
We introduce an analytic signal for excitation source analysis of voiced sounds. The envelope of the signal is a six-ter... [more] | EA2018-63 EMM2018-63 pp.1-5 |
| SP | 2018-08-27 11:00 |
Kyoto | Kyoto Univ. | Simple method for detecting GCI and GOI based on complex wavelet analysis with cosine series envelope Hideki Kawahara (Wakayama Univ.), Ken-Ichi Sakakibara (Health Science Univ. Hokkaido) SP2018-22 |
We propose to use an analytic signal made from a cosine series envelope which was specially designed for analyzing the s... [more] | SP2018-22 pp.1-5 |
| NLC, IPSJ-NL, SP, IPSJ-SLP (Joint) [detail] |
2017-12-21 12:50 |
Tokyo | Waseda Univ. Green Computing Systems Research Organization | [Poster Presentation]
Realtime analysis and display of voice source periodicity Hideki Kawahara (Wakayama Univ.), Ken-Ichi Sakakibara (Health Sciences Univ. Hokkaido) SP2017-59 |
This article introduces a real-time procedure for extraction and display of deviations from pure periodicity in voice ex... [more] | SP2017-59 pp.21-22 |
| EA, ASJ-H | 2017-07-20 15:00 |
Hokkaido | Hokkaido Univ. | [Invited Talk]
Revisiting VOCODER
-- Why I intentionally discard the original phase of the original speech? -- Hideki Kawahara (Wakayama Univ.) EA2017-4 |
VOCODER is a framework invented for narrow band communication about 80 years ago. It has been providing a productive bas... [more] | EA2017-4 pp.21-26 |
| MW | 2017-05-19 11:20 |
Osaka | Osaka Univ. (Seminar Room1, Osaka Univ. Kaikan) | Theoretical Relations between Unloaded Q Factor, Stored Energy, Group Delay, and Insertion Loss Derived from Coupling Matrix of Filter Circuit Masataka Ohira, Zhewang Ma (Saitama Univ.) MW2017-17 |
This paper revisits the theoretical relations between (1) unloaded Q factor of resonator, (2) reactive energy stored in ... [more] | MW2017-17 pp.55-60 |
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