| Presentation | 2009-01-29 A consideration on distance estimation based on the standing wave and its implementation : utilization of chirp sound signal Yuuta TSUCHIDA, Noboru NAKASAKO, Tetsuji UEBO, Toshihiro SHINOHARA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In many engineering fields, distance to targets is very important information. General distance measurement method uses time delay between transmitted and reflected waves, but it is difficult to estimate short distance. On the other hand, the method using standing wave to measure short distance is known in the field of microwave radar. We have applied this method to audible sound, and the validity of the method has been shown through simulations and experiments, including a trial on implementation of the method in microcomputer. But, especially for microcomputer system, there has remained a problem that it took a long time to compute FFT twice when using a transmitted sound with a proper frequency bandwidth. In this report, we introduce a chirp sound signal as a transmitted wave to accelerate our method and implement it in microcomputer, and show the small distance measurement system using our method. Finally, we confirm the effectiveness of our proposed system by applying it to the actual sound field. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Distance estimation / Standing wave / Close range / Microcomputer / Range spectrum / Chirp signal |
| Paper # | US2008-79,EA2008-121 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2009/1/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Engineering Acoustics (EA) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A consideration on distance estimation based on the standing wave and its implementation : utilization of chirp sound signal |
| Sub Title (in English) | |
| Keyword(1) | Distance estimation |
| Keyword(2) | Standing wave |
| Keyword(3) | Close range |
| Keyword(4) | Microcomputer |
| Keyword(5) | Range spectrum |
| Keyword(6) | Chirp signal |
| 1st Author's Name | Yuuta TSUCHIDA |
| 1st Author's Affiliation | Osaka Prefecture Univ.:Kinki Univ.() |
| 2nd Author's Name | Noboru NAKASAKO |
| 2nd Author's Affiliation | Kinki Univ. |
| 3rd Author's Name | Tetsuji UEBO |
| 3rd Author's Affiliation | Saika Technological Institute Foundation:Kinki Univ. |
| 4th Author's Name | Toshihiro SHINOHARA |
| 4th Author's Affiliation | Kinki Univ. |
| Date | 2009-01-29 |
| Paper # | US2008-79,EA2008-121 |
| Volume (vol) | vol.108 |
| Number (no) | 411 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |