| Presentation | 1993/12/14 Adaptive cancelling of ambient noise in lung sound measurement Akifumi Suzuki, Takayoshi Sumi, Kiyoshi Nakayama, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Ambient noise such as machine noise and human voice often disturbs lung sound measurement.We applied adaptive filtering technique to reduce ambient noise.An off-line adaptive noise canceller having a transversal filter was implemented in a workstation.Filter coefficients were controlled by LMS algorithm. Wide-band random noise and human voice were used as ambient noise. The performance of the canceller was assessed by changing canceller parameters and ambient noise level.The result showed that the ambient noise was reduced by about 30dB using a 256-tap filter with the convergence time of several seconds.The results show that this method is very effective for the ambient noise reduction in lung sound measurement. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | lung sound / ambient noise / adaptive signal processing / noise cancellor / stethoscope |
| Paper # | MBE93-101 |
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| Conference Information | |
| Committee | MBE |
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| Conference Date | 1993/12/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
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| Paper Information | |
| Registration To | ME and Bio Cybernetics (MBE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Adaptive cancelling of ambient noise in lung sound measurement |
| Sub Title (in English) | |
| Keyword(1) | lung sound |
| Keyword(2) | ambient noise |
| Keyword(3) | adaptive signal processing |
| Keyword(4) | noise cancellor |
| Keyword(5) | stethoscope |
| 1st Author's Name | Akifumi Suzuki |
| 1st Author's Affiliation | Department of Electrical and Electronics Engineering,Faculty of Science and Technology,Sophia University() |
| 2nd Author's Name | Takayoshi Sumi |
| 2nd Author's Affiliation | Department of Electrical and Electronics Engineering,Faculty of Science and Technology,Sophia University |
| 3rd Author's Name | Kiyoshi Nakayama |
| 3rd Author's Affiliation | Department of Electrical and Electronics Engineering,Faculty of Science and Technology,Sophia University |
| Date | 1993/12/14 |
| Paper # | MBE93-101 |
| Volume (vol) | vol.93 |
| Number (no) | 375 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |