| Presentation | 2013-09-12 Adaptive Dynamic Filter Applied for Refinement of Airborne Ultrasound Doppler Signal for Urodynamics Study(2) Seiji Matsumoto, Yasuhito Takeuchi, Hidehito Kakizaki, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Along with our development of airborne ultrasound Doppler system for external non-contact urodymanics study, we devised an adaptive dynamic low-cut filter to refine the signal for simple zero-cross rate method for instantaneous frequency measurement to estimate running urea speed. It suppresses the low frequency component adaptively at every time of varying signal parameter, and helps to avoid low frequency interference artifact which causes under-estimate of instantaneous frequency, and hence urea speed. The mechanism is such that when signal level is excess than predetermined threshold, the filter cut-off f frequency is to be raised until the filter output remains about target value. This method can effectively prevent underestimate of zero-crossing rate measurement for instantaneous frequency due to co-existing low frequency artifact, in the signal. Following up to our 1st report we present now the continuing part. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | airborne ultrasound / Doppler / zero-cross rate / adaptive filter / urodymanics |
| Paper # | US2013-42 |
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| Conference Information | |
| Committee | US |
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| Conference Date | 2013/9/5(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Ultrasonics (US) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Adaptive Dynamic Filter Applied for Refinement of Airborne Ultrasound Doppler Signal for Urodynamics Study(2) |
| Sub Title (in English) | |
| Keyword(1) | airborne ultrasound |
| Keyword(2) | Doppler |
| Keyword(3) | zero-cross rate |
| Keyword(4) | adaptive filter |
| Keyword(5) | urodymanics |
| 1st Author's Name | Seiji Matsumoto |
| 1st Author's Affiliation | Asahikawa Medical University, Dept. of Renal and Urologic Surgery() |
| 2nd Author's Name | Yasuhito Takeuchi |
| 2nd Author's Affiliation | Asahikawa Medical University, Dept. of Renal and Urologic Surgery |
| 3rd Author's Name | Hidehito Kakizaki |
| 3rd Author's Affiliation | Asahikawa Medical University, Dept. of Renal and Urologic Surgery |
| Date | 2013-09-12 |
| Paper # | US2013-42 |
| Volume (vol) | vol.113 |
| Number (no) | 201 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |