| Presentation | 1998/12/17 Estimation of Focus Position of Concave Transducer Using Microphone Array Atsushi Okamoto, Hideo Shibayama, Shigeru Okada, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The researches for estimation of direction of arrival and source position of sound in audible field are studied widely. However, signal processing for these estimation is scarce in ultrasonic field. For estimation of structure aimed to diagnosis structural change of the part of disease disturbance and to clarify role of living tissue, we pay attention to the ultrasonic diffraction method. We ovserve the diffracted waves by tissue at focus position of the transducer in this method. Then it is important to find an accurate focus in order to estimate structure in high precision. In order to estimate position of focus, we suggest to use a microphone array. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Concave transducer / Focus / Microphone array / Transfer function / Autocorrelation image |
| Paper # | EA98-98 |
| Date of Issue |
| Conference Information | |
| Committee | EA |
|---|---|
| Conference Date | 1998/12/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Engineering Acoustics (EA) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Estimation of Focus Position of Concave Transducer Using Microphone Array |
| Sub Title (in English) | |
| Keyword(1) | Concave transducer |
| Keyword(2) | Focus |
| Keyword(3) | Microphone array |
| Keyword(4) | Transfer function |
| Keyword(5) | Autocorrelation image |
| 1st Author's Name | Atsushi Okamoto |
| 1st Author's Affiliation | Shibaura Institute of Technology() |
| 2nd Author's Name | Hideo Shibayama |
| 2nd Author's Affiliation | Shibaura Institute of Technology |
| 3rd Author's Name | Shigeru Okada |
| 3rd Author's Affiliation | Shibaura Institute of Technology |
| Date | 1998/12/17 |
| Paper # | EA98-98 |
| Volume (vol) | vol.98 |
| Number (no) | 476 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |