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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| EA, SIP, SP | 2019-03-14 13:30 |
Nagasaki | i+Land nagasaki (Nagasaki-shi) | [Poster Presentation]
Prototype of an electronic earplug for music Lixue Chen, Yoshinori Yokoo, Kohichi Matsuda, Hirofumi Nakajima (Kogakuin Univ.), Yohichi Fujisaka (RION Co., Ltd.)  EA2018-104 SIP2018-110 SP2018-66 |
In rock concerts and live performances, earplugs are used to prevent ear damage due to loud sounds. The authors have inv... [more] | EA2018-104 SIP2018-110 SP2018-66 pp.31-36 |
| EA, EMM | 2015-11-12 16:00 |
Kumamoto | Kumamoto Univ. | Study of Passive Acoustic Anemometer with Microphone Array Tetsuro Murakami, Naoto Sakata, Yuta Hayashi, Hirofumi Nakajima (Kogakuin Univ.), Kazuhiro Nakadai (HRI-JP) EA2015-29 EMM2015-50 |
[more] | EA2015-29 EMM2015-50 pp.29-34 |
| SIP, EA, SP | 2015-03-02 09:00 |
Okinawa | Wind-induced Noise Reduction in Time Domain Using Closely-aligned Two Microphones. Naoto Sakata, Hirofumi Nakajima (Kogakuin Univ.), Kazuhiro Nakadai (HRI-JP) EA2014-72 SIP2014-113 SP2014-135 |
In this report, wind-induced noise reduction in time domain was investigated using closely-aligned two microphones. A li... [more] | EA2014-72 SIP2014-113 SP2014-135 pp.1-6 |
|
| SIP, EA, SP | 2015-03-03 10:45 |
Okinawa | [Poster Presentation]
Analysis of Apnea Hypopnea Index (AHI) Prediction Model by Breath sounds Yuki Kashina, Nichito Nakata, Naoto Sakata, Hirofumi Nakajima (Kogakuin Univ.), Yasuhiro Yamaguchi (UTokyo) EA2014-113 SIP2014-154 SP2014-176 |
Sleep Apnea Syndrome (SAS) is a type of sleep disorder that causes behavioral effects such as the daytime sleepiness. As... [more] | EA2014-113 SIP2014-154 SP2014-176 pp.225-230 |
|
| EA, US (Joint) |
2014-01-27 16:25 |
Osaka | Kansai University, Centenary Memorial Hall | Non-linear distortion reduction by equalization of input signal in time domain Kihiro Hashino, Naoto Sakata, Yuki Kato, Hirofumi Nakajima, Kazunori Miyoshi (Kogakuin Univ.) EA2013-106 |
In this paper, we propose a reduction method of non-linear distortions for long input signals which are difficult in fre... [more] | EA2013-106 pp.15-20 |
| EA, US (Joint) |
2014-01-27 16:50 |
Osaka | Kansai University, Centenary Memorial Hall | Study of wind noise reduction using a microphone array Naoto Sakata, Kihiro Hashino, Hirofumi Nakajima, Kazunori Miyoshi (Kougakuin Univ.) EA2013-107 |
In this report, we analyze characteristics of wind-induced noise to reduce itself. We record wind-induced noises using a... [more] | EA2013-107 pp.21-26 |
| EA | 2013-07-19 11:15 |
Hokkaido | Health Sci. Univ. of Hokkaido | Non-linear distortion reduction of earphones by input signal equalization Naoto Sakata, Yuki Kato, Hirofumi Nakajima, Kazunori Miyoshi (Kogakuin Univ.) EA2013-47 |
In this paper, we performed nonlinear distortion reduction of earphones by equalizing input signal recursively. This dis... [more] | EA2013-47 pp.81-86 |
| EA | 2013-07-19 11:45 |
Hokkaido | Health Sci. Univ. of Hokkaido | Changes in acoustic properties of headphones with and without "aging" Kihiro Hashino, Yuki Kato, Hirofumi Nakajima, Kazunori Miyoshi (Kogakuin Univ.) EA2013-48 |
In this report, to validate acoustic property changes of headphones by “Aging”. We analyzed the difference of various ac... [more] | EA2013-48 pp.87-92 |
| EA | 2013-03-12 10:00 |
Saitama | KDDI R&D Laboratories | Clarification of sound environmental research and hardware requirements for the construction of a simple diagnostic system sleep apnea syndrome Shogo Suno, Norihiko Jindo, Yuki Kato, Hirofumi Nakajima, Kazunori Miyoshi (Kogakuin Univ.) EA2012-141 |
A number of patients of sleep Apnea Syndrome(SAS) have been increasing in recent years. This syndrome happens during sle... [more] | EA2012-141 pp.1-6 |
| EA | 2013-03-12 10:30 |
Saitama | KDDI R&D Laboratories | Investigation of non-liner distortion reduction of loudspeaker by recursive source signal equalization Yuki Kato, Hirofumi Nakajima, Kazunori Miyoshi (Kogakuin Univ.) EA2012-142 |
This paper proposes a non-linear distortion reduction method for a loudspeaker by recursive equalization of a source sig... [more] | EA2012-142 pp.7-12 |
| EA | 2010-07-16 16:30 |
Tokyo | RION Co., Ltd. | Real time speaker orientation estimation using a room microphone array Takuya Harubara (Tokyo Denki Univ.), Hirofumi Nakajima, Kazuhiro Nakadai (HRI-JP), Yutaka Kaneda (Tokyo Denki Univ.) EA2010-41 |
This paper addresses a real-time sound source orientation estimation system using a 96ch microphone-array. We proposed a... [more] | EA2010-41 pp.19-24 |
| EA | 2009-07-17 13:45 |
Tokyo | Blind Dereverberation Improved By Multi-Stage Processing Hirofumi Nakajima (Honda Research Inst. Japan Co., Ltd.), Toru Daigo (Tokyo Denki Univ.), Kazuhiro Nakadai (Honda Research Inst. Japan Co., Ltd.), Yutaka Kaneda (Tokyo Denki Univ.), Yuji Hasegawa (Honda Research Inst. Japan Co., Ltd.) EA2009-38 |
This paper addresses a high performance dereverberation method based on a multi-stage processing technique. The multipl... [more] |
EA2009-38 pp.7-12 |
|
| EA | 2009-06-26 17:00 |
Hokkaido | The design of a directional sound source for numerical simulation based on wave acoustics Toshimasa Suziki (Sophia Univ.), Hirofumi Nakajima, Kazuhiro Nakadai (Honda Research Institute Japan Co., Ltd.), Takayuki Arai (Sophia Univ.), Yuji Hasegawa (Honda Research Institute Japan Co., Ltd.) EA2009-36 |
Thanks to improvements in computer performance, numerical simulation based on wave acoustics works in practical time wi... [more] |
EA2009-36 pp.109-114 |
|
| EA | 2008-07-18 14:00 |
Nara | Estimation of sound source orientation using a 96 channel microphone array Keiko Kikuchi, Tohru Daigo (TDU), Hirofumi Nakajima, Kazuhiro Nakadai, Yuji Hasegawa (HRI-JP), Yutaka Kaneda (TDU) EA2008-39 |
This paper addresses sound source orientation estimation using a 96ch microphone array. We proposed a beam-forming metho... [more] | EA2008-39 pp.13-18 |
|
| EA | 2007-06-29 13:45 |
Hokkaido | Hokkaido Univ. | High performance blind source separation using an adaptive step-size parameter method Hirofumi Nakajima, Kazuhiro Nakadai, Yuji Hasegawa, Hiroshi Tsujino (Honda Research Institute Japan) EA2007-30 |
This paper describes a novel blind source separation (BSS) method. One of the most important factors in BSS performance... [more] |
EA2007-30 pp.19-24 |
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