| Presentation | 2017-03-01 Study on tolerance of time axis fluctuation of pure white pseudonoisesignal1for impulse response measurement Kentaro Mori, Yutaka Kaneda, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In impulse response measurement, a time-invariant linear system is assumed. Therefore, measurement errors arise when there is temporal fluctuation in transmission systems caused by wind during measurement in a large space or a minute difference between the sampling periods of a digital-to-analog (DA) reproducing system and an analog-to-digital (AD) recording system. The magnitude of the errors depends on the type of measurement signal. The magnitude is small when a swept sine signal, such as a time-stretched pulse (TSP), is used; however, it is large when a pseudonoise signal, such as a maximum length sequence (M-sequence), is used. We consider that this error is caused by the fact that conventional white pseudonoise does not have a white continuous spectrum whereas its discrete spectrum is white. In this study, a new pseudonoise signal with a white continuous spectrum is proposed. We call this new signal a “pure white pseudonoise signal”, and its generation algorithm is presented. Simulations and experiments in a real environment show the effectiveness of the pure white pseudonoise signal for ensuring tolerance to time axis fluctuation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Impulse response / Pseudo noise / Time jitter / Pure white pseudo noise |
| Paper # | EA2016-86,SIP2016-141,SP2016-81 |
| Date of Issue | 2017-02-22 (EA, SIP, SP) |
| Conference Information | |
| Committee | SP / SIP / EA |
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| Conference Date | 2017/3/1(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Okinawa Industry Support Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Speech, Engineering/Electro Acoustics, Signal Processing, and Related Topics |
| Chair | Kazunori Mano(Shibaura Inst. of Tech.) / Makoto Nakashizuka(Chiba Inst. of Tech.) / Mitsunori Mizumachi(Kyushu Inst. of Tech.) |
| Vice Chair | Hiroki Mori(Utsunomiya Univ.) / Masahiro Okuda(Univ. of Kitakyushu) / Shogo Muramatsu(Niigata Univ.) / Yoichi Haneda(Univ. of Electro-Comm.) / Suehiro Shimauchi(NTT) |
| Secretary | Hiroki Mori(Kobe Univ.) / Masahiro Okuda(Shizuoka Univ.) / Shogo Muramatsu(Ritsumeikan Univ.) / Yoichi Haneda(Chiba Inst. of Tech.) / Suehiro Shimauchi(KDDI R&D Labs.) |
| Assistant | Taichi Asami(NTT) / Kei Hashimoto(Nagoya Inst. of Tech.) / Osamu Watanabe(Takushoku Univ.) / Shigeto Takeoka(Shizuoka Inst. of Science and Tech.) / TREVINO Jorge(Tohoku Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Speech / Technical Committee on Signal Processing / Technical Committee on Engineering Acoustics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on tolerance of time axis fluctuation of pure white pseudonoisesignal1for impulse response measurement |
| Sub Title (in English) | |
| Keyword(1) | Impulse response |
| Keyword(2) | Pseudo noise |
| Keyword(3) | Time jitter |
| Keyword(4) | Pure white pseudo noise |
| 1st Author's Name | Kentaro Mori |
| 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 | 2017-03-01 |
| Paper # | EA2016-86,SIP2016-141,SP2016-81 |
| Volume (vol) | vol.116 |
| Number (no) | EA-475,SIP-476,SP-477 |
| Page | pp.pp.25-30(EA), pp.25-30(SIP), pp.25-30(SP), |
| #Pages | 6 |
| Date of Issue | 2017-02-22 (EA, SIP, SP) |