Search Results 1-20 of 100

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  • Effect of passive whole-body rotation on sound localization accuracy of listener subjective straight ahead

    Honda Akio , Masumi Yoji , Suzuki Yôiti , Sakamoto Shuichi

    … Listeners sat on a digitally controlled spinning chair placed at the center of a circular loudspeaker array (radius = 1.1 m, speaker spacing = 2.5°) and were exposed to a single 30-ms pink noise burst emitted from one loudspeaker of this array. …

    Acoustical Science and Technology 41(1), 249-252, 2020

    J-STAGE 

  • Smartphone Accurate 3-D Localization Using Mirror Image Speakers  [in Japanese]

    村上 弘晃 , 中村 将成 , 橋爪 宏達 , 杉本 雅則

    本稿では,スピーカ2台から送信される音響信号の直接波と反射波を用いたスマートフォンのための新たな高精度3次元測位手法について述べる.我々は,壁と床からの1次反射波を,壁と床に対するスピーカの鏡像体からの信号ととらえる,鏡像スピーカの概念を新たに提案する.また,スマートフォンを水平にもち,2つの搭載マイクロフォンを利用することで実在スピーカおよび鏡像スピーカからの信号を特定する.2.5mの間隔でスピ …

    情報処理学会論文誌 60(12), 2314-2324, 2019-12-15

    IPSJ 

  • Speaker's Localization in Meeting Using Speech Sound  [in Japanese]

    福島 潤 , 大山 真司

    センシングフォーラム資料 36, 6p, 2019-08-29

  • Changes in vertical localization and apparent source width of the sound image due to differences in speaker position height  [in Japanese]

    亀川 徹 , 丸井 淳史 , 細谷 耕佑 , 木村 勝

    音楽音響研究会資料 38(5), 19-24, 2019-08-24

  • Study on methods for localization of the low frequency sound  [in Japanese]

    DOI Tetsuya , IWANAGA Keiichiro , KOBAYASHI Tomohiro , NAKAYAMA Tsumugi , NAKAJIMA Yasutaka

    … We conducted the field experiments using a loud speaker and microphones to verify estimation accuracy. …

    The Proceedings of Mechanical Engineering Congress, Japan 2019(0), S09106, 2019

    J-STAGE 

  • Study on methods for localization of the low frequency sound  [in Japanese]

    DOI Tetsuya , IWANAGA Keiichiro , KOBAYASHI Tomohiro , NAKAYAMA Tsumugi , NAKAJIMA Yasutaka

    … Next, we conducted the field experiments using a loud speaker and eight microphones to verify estimation accuracy. …

    The Proceedings of the Symposium on Environmental Engineering 2019.29(0), PJ103, 2019

    J-STAGE 

  • A study on the auralization system using flexible rendering for virtual reality-based acoustic simulation

    LEE Yeongchan , RYU Jaeho

    … In a reliability test of the performance of sound image localization by human cognitive ability, the result was a match rate of 89.4%, which proved the usefulness of this system for sound simulation for architects with low cost and easy portability.</p> …

    Journal of Advanced Mechanical Design, Systems, and Manufacturing 13(5), JAMDSM0094-JAMDSM0094, 2019

    J-STAGE 

  • Development of double nearfield acoustic holography method (Basic experimental results)  [in Japanese]

    NAGAMATSU Masao

    … <p>There are several types of sound localization methods. … However, for low frequency sound under 100Hz, almost sound localization methods do not have enough resolution to detect the sound source location. … To overcome this problem, the author is now developing a new sound localization method, "Double Near-field Acoustic Holography method." … The Near-field Acoustic Holography method has best resolution in all sound localization method. …

    Transactions of the JSME (in Japanese) 85(874), 18-00447-18-00447, 2019

    J-STAGE 

  • Development of Acoustic Nonverbal Information Estimation System for Unconstrained Long-Term Monitoring of Daily Office Activity

    YOKOYAMA Hitomi , NAKAYAMA Masano , MURATA Hiroaki , FUJITA Kinya

    … The system combines a sound localization technique based on the sound energy distribution with 16 beam-forming microphone-array modules mounted in the ceiling for reducing the influence of multiple sound reflection. … Furthermore, human detection using a wide field of view camera is integrated to the system for more robust speaker estimation. … The system estimates the speaker for each utterance and calculates nonverbal information based on it. …

    IEICE Transactions on Information and Systems E102.D(2), 331-345, 2019

    J-STAGE 

  • Problems related to multilingualization of digital learning materials  [in Japanese]

    江見 圭司 , 湯下 秀樹 , トム 忍足

    情報教育シンポジウム論文集 2018(9), 60-67, 2018-08-12

    IPSJ 

  • Development of Sound Localization System based on Daily Conversation  [in Japanese]

    二瓶 雄貴 , 山本 昇志

    映像情報メディア学会技術報告 = ITE technical report 42(6), 49-52, 2018-02

  • AR shadow-clone agent system for speaker in one-to-many communication  [in Japanese]

    田中 友樹 , 北岸 佑樹 , 米澤 朋子

    ヒューマンインタフェース学会研究報告集 20, 37-42, 2018

  • Speaker Separation in Multi-Channel Environment Using Deep Learning

    Liu Conggui , Liu Conggui , 井上 中順 , Inoue Nakamasa , 篠田 浩一 , Shinoda Koichi

    … This paper addresses multi-channel speaker separation based on a deep delay-and-subtraction beamformer.Deep neural network(DNN) is first applied to estimate the delay time between speakers and microphones , and thenspeakers' speech is recovered from mixed signals by using a delay-and-subtraction algorithm. … The proposed method achieved high precision source localization,and about 62% relative improvement on word error rate (WER) over a delay-and-sum (DS) beamformer. …

    情報処理学会研究報告 115(no. 11), 1-6, 2017-02

    IR 

  • Simultaneous Identification and Localization of Still and Mobile Speakers Based on Binaural Robot Audition

    Youssef Karim , Itoyama Katsutoshi , Yoshii Kazuyoshi

    … <p>This paper jointly addresses the tasks of speaker identification and localization with binaural signals. … It demonstrates that a simultaneous identification and localization operation can benefit from a common signal processing front end for feature extraction. … These acoustic features are respectively used for speaker identity and azimuth estimation through artificial neural networks (ANNs). …

    Journal of Robotics and Mechatronics 29(1), 59-71, 2017

    J-STAGE 

  • Development of Double Nearfield Acoustic Holography Method:(Basic Experiments)  [in Japanese]

    NAGAMATSU Masao

    … There are several types of sound localization methods. … However, for low frequency sound under 100Hz, almost sound localization methods do not have enough resolution to detect the sound source location. … To overcome this problem, the author is now developing a new sound localization method, "Double Near-field Acoustic Holography method." … The Near-field Acoustic Holography method has best resolution in all sound localization method. …

    The Proceedings of the Dynamics & Design Conference 2017(0), 423, 2017

    J-STAGE 

  • Multi-speaker Localization and Tracking Based on TDOA Derived from Multi-frame CSP Coefficient  [in Japanese]

    TSUNASAWA Shun , OHYAMA Shinji

    … In this paper, multi-speaker localization methods using voice signal are proposed. … Sound source localization systems consisting of many microphones have been widely researched. … In our laboratory, we have researched sound source localization of persons based on TDOA (Time Difference of Arrival) between distributed microphones for the purpose of efficient use of air conditioner and lighting in the office . …

    Transactions of the Society of Instrument and Control Engineers 53(12), 644-653, 2017

    J-STAGE 

  • Multiple devices' synchronization and positional estimation for auditory localization in a confined space  [in Japanese]

    伊納 洋佑 , 石川 佑樹 , 中 祐介 [他]

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 115(424), 19-26, 2016-01-28

  • Study on Sound Image Localization by Ultrasonic Bone Conduction  [in Japanese]

    ISAKA Hideharu , MEGURO Naoki , YKOO Yuuki

    … The purpose of this research is to design the UBC speaker which is able to control the sound image localization in auditory sensation. … The UBC speaker is constituted by the multilayer type piezoelectric actuator and the mounting device, which is produced experimentally. … In the experiment, it is mounted on the mastoid or the front-back of head, and the distribution and angle of sound image localization were evaluated sensuality. …

    The Proceedings of the Dynamics & Design Conference 2016(0), 316, 2016

    J-STAGE 

  • Evaluation of Speech Interval Detection and Face Orientation Estimation based on Sound Directions by Multiple Microphone Arrays and Human Positions  [in Japanese]

    Ishi Carlos T. , Even Jani , Hagita Norihiro

    … Evaluation results revealed that the proposed system could detect speech intervals with more than 90% accuracy, and face orientations with mean absolute errors around 20 degrees, in situations excluding the cases where all arrays are in the opposite direction to the speaker's face orientation. …

    Journal of the Robotics Society of Japan 34(3), 199-204, 2016

    J-STAGE 

  • Aspectual and Tensal Meaning of Static Verbs Shitu-Form in Ancient Japanese  [in Japanese]

    渡真利 聖子 , Tomari Seiko

    古代日本語における静態動詞シツ形のアスペクト・テンス的意味を見た結果,運動動詞の場合と同じく,アスペクト的意味は<限界達成性>及び<ひとまとまり性>で,テンス的には<過去>であった。静態動詞における<限界達成性><ひとまとまり性>とは現在に続かない状態の終了を表しているものである。このようなアスペクト的特徴と関連して,シツ形のテクスト的機 …

    琉球大学留学生センター紀要 = Bulletin of International Student Center University of the Ryukyus (2), 15-29, 2015-03

    IR 

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