著者

森川 大輔 津田 健治

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.63, no.2, pp.135-142, 2021-05-31 (Released:2021-06-05)

参考文献数

36

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Convergent-beam electron diffraction (CBED) is one of the powerful tools for nano-meter scale structural analysis. From its specific futures such as nano-meter probe, dynamical scattering, and direct determination of electrostatic potential, CBED can be applied for space group determination, observation of orbital-ordered state, and local structure analysis. In this paper, some examples for recent results obtained by CBED method are described.

著者

森川 大輔 石井 裕 渡辺 富夫

出版者

ヒューマンインタフェース学会

雑誌

ヒューマンインタフェース学会論文誌 (ISSN:13447262)

巻号頁・発行日

vol.22, no.4, pp.403-410, 2020-11-25 (Released:2020-11-25)

参考文献数

16

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In a face-to-face verbal communication, listener’s movements such as nod ding and body motions are interactively synchronized with a speaker’s speech. We have developed a group communication system that uses multiple ”InterActors” that generate communicative motions such as nodding based on the rhythm of utterance like audiences in a VR (Virtual Reality) classroom. The sound environment has a psychological effect on the classroom space. For example, previous studies have shown that the acoustic environment of the classroom affects the learning efficiency of students in the classroom. It may be easier to speak in a noisy environment, such as a classroom break, than speaking in a quiet space. In this paper, we developed a speech support system based on a noisy environment generated by arranging a listener’s InterActor and multiple non-participant characters that were not involved in the conversation, and evaluated the effects of the InterActor’s nodding and back-channel in the noisy environment. As a result, type of noise would give users a different feel, which suggests individual differences in the perception of the appropriate volume for each type of noise. Thus, we analyzed and evaluated the effect of the type of noise and the presence or absence of non-participants on speech by changing the volume of the noise and selecting an appropriate volume in individuals for users. As a result, we verified the effect of the noise environment on the speech.

著者

森川 大輔

出版者

立命館大学国際平和ミュージアム

雑誌

立命館平和研究 (ISSN:18827217)

巻号頁・発行日

vol.22, pp.117-129, 2021-03

著者

今井 悠貴 森川 大輔 平原 達也

出版者

一般社団法人電子情報通信学会

雑誌

電子情報通信学会技術研究報告. EA, 応用音響 (ISSN:09135685)

巻号頁・発行日

vol.112, no.266, pp.43-48, 2012-10-19

参考文献数

14

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超小型動電型スピーカユニットを耳栓スピーカとして用い,48chの頭部伝達関数(HRTF)を相反法を用いて高速に計測するシステムを構築し,その性能を検証した.相反法による高速HRTF計測システムでは500Hz〜20kHzの帯域のHRTFを30sで計測でき,計測したHRTFと従来の直接法で計測したHRTFとのスペクトル誤差は4dB以下であった.また,時間がかかるために直接法では計測が困難であった頭部を横に向けた状態のHRTFと,特殊な音源を用いなければ計測が困難であった近接場のHRTF,および距離を変えたHRTFを,相反法による高速HRTF計測システムで計測した.