| Presentation | 2013-03-08 A study on Noise Suppression for Cardiac Sound Takashi SUDO, Hirokazu TANAKA, Chika SUGIMOTO, Ryuji KOHNO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The needs of health care is growing in recent years. The home-oriented health care and medical equipment is spreading. A digital stethoscope is also appearing. This research aims at monitoring a user's heart sound always anywhere with the digital stethoscope built in the wearable device. In this case, if a heart sound is monitored with a digital stethoscope, it will be expected that the ambient noise from environment mixes or noise is overlapped by motion of the body. This research examined how to suppress the sudden non-stationary noise from the stethoscope signal of one channel. In this paper, we propose the method of presuming the excitation signal in linear prediction analysis as a non-stationary noise component. Compared with the spectral subtraction method which always updates a noise spectrum. our method has improved spectrum distortion of 2.2dB, and has improved the amount of noise suppression of 3.4 dB. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Sound / Wearable Devices / 1-channel / Non-Stationary Noise / linear prediction analysis |
| Paper # | SIS2012-62 |
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| Conference Information | |
| Committee | SIS |
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| Conference Date | 2013/2/28(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Smart Info-Media Systems (SIS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A study on Noise Suppression for Cardiac Sound |
| Sub Title (in English) | |
| Keyword(1) | Sound |
| Keyword(2) | Wearable Devices |
| Keyword(3) | 1-channel |
| Keyword(4) | Non-Stationary Noise |
| Keyword(5) | linear prediction analysis |
| 1st Author's Name | Takashi SUDO |
| 1st Author's Affiliation | Toshiba Corooration:Graduate School of Engineering, Yokohama National University() |
| 2nd Author's Name | Hirokazu TANAKA |
| 2nd Author's Affiliation | Toshiba Corooration:Faculty of Engineering, Yokohama National University |
| 3rd Author's Name | Chika SUGIMOTO |
| 3rd Author's Affiliation | Faculty of Engineering, Yokohama National University |
| 4th Author's Name | Ryuji KOHNO |
| 4th Author's Affiliation | Faculty of Engineering, Yokohama National University |
| Date | 2013-03-08 |
| Paper # | SIS2012-62 |
| Volume (vol) | vol.112 |
| Number (no) | 465 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |