| Presentation | 2018-11-21 Directional pattern analysis of late reverberation using spherical microphone array Yuto Izumi, Makoto Otani, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Arrival direction of reflected sound is one of important factors to characterize spatial impression. An impulse response can be divided into two segments, early reflections and late reverberation, and a diffused sound field is often assumed for the late reverberation. However, it is reported that the spatial distribution of the arrival direction of reflected sound is not uniform. In this paper, we employ a spherical microphone array and analyze the spatial distribution of reflected sound by applying plane wave decomposition. From the measurement performed in a concert hall, certain biases are observed in the spatial distribution of late reverberation and the biases are more prominent as the time proceeds. In addition, it is indicated that the spatial distribution depends on the relation between the sound source and the receiver position. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Late reverberation / LEV / Plane wave decomposition / Spherical harmonics expansion / Decay-cancelled impulse response |
| Paper # | EA2018-65,EMM2018-65 |
| Date of Issue | 2018-11-14 (EA, EMM) |
| Conference Information | |
| Committee | EA / ASJ-H / EMM / IPSJ-MUS |
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| Conference Date | 2018/11/21(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hotel Koshuen |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | [Beginners Session] Engineering/Electro Acoustics, Psychological and Physiological Acoustics, Music and Computer, Content Processing, Digital Watermarking, and Related Topics |
| Chair | Suehiro Shimauchi(Kanazawa Inst. of Tech.) / 小澤 賢司(山梨大) / Keiichi Iwamura(TUC) / 吉井 和佳(京大) |
| Vice Chair | Kenichi Furuya(Oita Univ.) / Kanji Watanabe(Akita Pref. Univ.) / 中川 誠司(千葉大) / Minoru Kuribayashi(Okayama Univ.) / Tetsuya Kojima(NIT,Tokyo College) |
| Secretary | Kenichi Furuya(Shizuoka Inst. of Science and Tech.) / Kanji Watanabe(NHK) / 中川 誠司(尚絅大) / Minoru Kuribayashi(北陸先端大) / Tetsuya Kojima(千葉大) / (NIT, Tokyo) |
| Assistant | Keisuke Imoto(Ritsumeikan Univ.) / Daisuke Morikawa(Toyama Pref Univ.) / / Hiroko Akiyama(NIT, Nagano College) / キタヒロ カネダ(CANON) |
| Paper Information | |
| Registration To | Technical Committee on Engineering Acoustics / Auditory Research Meeting / Technical Committee on Enriched MultiMedia / Special Interest Group on Music and Computer |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Directional pattern analysis of late reverberation using spherical microphone array |
| Sub Title (in English) | |
| Keyword(1) | Late reverberation |
| Keyword(2) | LEV |
| Keyword(3) | Plane wave decomposition |
| Keyword(4) | Spherical harmonics expansion |
| Keyword(5) | Decay-cancelled impulse response |
| 1st Author's Name | Yuto Izumi |
| 1st Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 2nd Author's Name | Makoto Otani |
| 2nd Author's Affiliation | Kyoto University(Kyoto Univ.) |
| Date | 2018-11-21 |
| Paper # | EA2018-65,EMM2018-65 |
| Volume (vol) | vol.118 |
| Number (no) | EA-312,EMM-313 |
| Page | pp.pp.13-18(EA), pp.13-18(EMM), |
| #Pages | 6 |
| Date of Issue | 2018-11-14 (EA, EMM) |