| Presentation | 2018-07-24 [Poster Presentation] Effectiveness of BMN-SS impulse response measurement method for reverberation time measurement Yohei Iiyama, Yutaka Kaneda, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The reverberation time is calculated from a room impulse response. In this case, the steady power level of the noise component is required to be less than $-45$ dB relative to the maximum instantaneous power of the impulse response in each octave band. However, when using a conventional impulse response measurement signal such as a TSP signal, the noise level depends on the frequency band. For this reason, a measurement using a long-time signal is necessary to satisfy the required noise level in all frequency bands. Therefore, we proposed a band-wise minimum noise swept sine (BMN-SS) signal that can control the noise level of each octave band in the measurement result. In this paper, we present the method of shortening the measurement time of the reverberation time using this BMN-SS signal and the measurement results in a real sound field. Using the BMN-SS signal, we confirmed the measurement time shortening by 1/200 of TSP signal and 1/4 of the Log-SS signal under the experimental condition stated in this paper. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | reverberation time measurement / impulse response / swept sine signal / octave band / noise level |
| Paper # | EA2018-6 |
| Date of Issue | 2018-07-17 (EA) |
| Conference Information | |
| Committee | EA / ASJ-H / ASJ-AA |
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| Conference Date | 2018/7/24(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Engineering/Electro Acoustics, Psychological and Physiological Acoustics, Architectural Acoustics, Education in Acoustics, and Related Topics |
| Chair | Suehiro Shimauchi(ＫＩＴ) / 小澤 賢司(山梨大) / 佐久間 哲哉(東大) |
| Vice Chair | Kenichi Furuya(Oita Univ.) / Kanji Watanabe(Akita Pref. Univ.) / 中川 誠司(千葉大) / 杉江 聡(小林理研) / 大谷 真(京大) |
| Secretary | Kenichi Furuya(Shizuoka Inst. of Science and Tech.) / Kanji Watanabe(NHK) / 中川 誠司(千葉大) / 杉江 聡(尚絅大) / 大谷 真(北陸先端大) |
| Assistant | Keisuke Imoto(Ritsumeikan Univ.) / Daisuke Morikawa(Toyama Pref Univ.) / / 井上 尚久(東大) |
| Paper Information | |
| Registration To | Technical Committee on Engineering Acoustics / Auditory Research Meeting / Architectural Acoustics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Poster Presentation] Effectiveness of BMN-SS impulse response measurement method for reverberation time measurement |
| Sub Title (in English) | |
| Keyword(1) | reverberation time measurement |
| Keyword(2) | impulse response |
| Keyword(3) | swept sine signal |
| Keyword(4) | octave band |
| Keyword(5) | noise level |
| 1st Author's Name | Yohei Iiyama |
| 1st Author's Affiliation | Tokyo Denki University(Tokyo Denki Univ) |
| 2nd Author's Name | Yutaka Kaneda |
| 2nd Author's Affiliation | Tokyo Denki University(Tokyo Denki Univ) |
| Date | 2018-07-24 |
| Paper # | EA2018-6 |
| Volume (vol) | vol.118 |
| Number (no) | EA-149 |
| Page | pp.pp.29-34(EA), |
| #Pages | 6 |
| Date of Issue | 2018-07-17 (EA) |