| Presentation | 2020-03-03 Real-time visualization of reverberation time using frequency domain variants of velvet noise Hideki Kawahara, Ken-Ichi Sakakibara, Mitsunori Mizumachi, Masanori Morise, Hideki Banno, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We introduce a wavelet-based method for real-time visualization of reverberation time for extending acoustic measurement based on the frequency domain variant of velvet noise (FVN). For application to acoustic measurement, we introduced a method to construct orthogonal set of sequences by allocating individual FVNs with orthogonal binary sequences for weighting. The proposed set of sequences enable simultaneous measurement of multiple acoustic paths. The mixture of the set also enables one-shot measurement of linear and non-linear responses of an acoustic system. In addition to these merit, we introduce a method to calculate the four-times longer impulse response than the allocation interval. We discuss about integration of the proposed method to the interactive and real-time acoustic measurement tool based on FVN. We also discuss about failure of group-delay for estimating reverberation time from the acoustic impulse response. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | impulse response / frequency domain variant of velvet noise / reverberation time / group delay / wavelet transform |
| Paper # | EA2019-159,SIP2019-161,SP2019-108 |
| Date of Issue | 2020-02-24 (EA, SIP, SP) |
| Conference Information | |
| Committee | SP / EA / SIP |
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| Conference Date | 2020/3/2(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Okinawa Industry Support Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hisashi Kawai(NICT) / Kenichi Furuya(Oita Univ.) / Naoyuki Aikawa(TUS) |
| Vice Chair | Akinobu Ri(Nagoya Inst. of Tech.) / Suehiro Shimauchi(Kanazawa Inst. of Tech.) / Shigeto Takeoka(Shizuoka Inst. of Science and Tech.) / Kazunori Hayashi(Osaka City Univ) / Yukihiro Bandou(NTT) |
| Secretary | Akinobu Ri(Kyoto Univ.) / Suehiro Shimauchi(Waseda Univ.) / Shigeto Takeoka(NHK) / Kazunori Hayashi(Univ. of Tokyo) / Yukihiro Bandou(Hiroshima Univ.) |
| Assistant | Tomoki Koriyama(Univ. of Tokyo) / Yusuke Ijima(NTT) / Keisuke Imoto(Ritsumeikan Univ.) / Daisuke Morikawa(Toyama Pref Univ.) / Kenjiro Sugimoto(Waseda Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Speech / Technical Committee on Engineering Acoustics / Technical Committee on Signal Processing |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Real-time visualization of reverberation time using frequency domain variants of velvet noise |
| Sub Title (in English) | |
| Keyword(1) | impulse response |
| Keyword(2) | frequency domain variant of velvet noise |
| Keyword(3) | reverberation time |
| Keyword(4) | group delay |
| Keyword(5) | wavelet transform |
| 1st Author's Name | Hideki Kawahara |
| 1st Author's Affiliation | Wakayama University(Wakayama Univ.) |
| 2nd Author's Name | Ken-Ichi Sakakibara |
| 2nd Author's Affiliation | Health Science University of Hokkaido(Health Science Univ. Hokkaido) |
| 3rd Author's Name | Mitsunori Mizumachi |
| 3rd Author's Affiliation | Kyushu Institute of Technology(Kyushu Inst. Tech.) |
| 4th Author's Name | Masanori Morise |
| 4th Author's Affiliation | Meiji Universityi(Meiji Univ.) |
| 5th Author's Name | Hideki Banno |
| 5th Author's Affiliation | Meijo University(Meijo Univ.) |
| Date | 2020-03-03 |
| Paper # | EA2019-159,SIP2019-161,SP2019-108 |
| Volume (vol) | vol.119 |
| Number (no) | EA-439,SIP-440,SP-441 |
| Page | pp.pp.337-342(EA), pp.337-342(SIP), pp.337-342(SP), |
| #Pages | 6 |
| Date of Issue | 2020-02-24 (EA, SIP, SP) |