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Accession number;03A0567691
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| Title;Separation of Lung Sounds Besed on the Shape of Short-term Spectrum |
| Author;
SUZUKI AKIFUMI
(Sophia Univ., Fac. Sci. and Technol., JPN)
NAKAYAMA KIYOSHI
(Sophia Univ., Fac. Sci. and Technol., JPN)
NAKANO HIROSHI
(National Minami Fukuoka Chest Hospital, JPN)
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Journal Title;Clinical Pharmacology and Therapy
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Journal Code:L1701A
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ISSN:0917-3994
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VOL.13;NO.4;PAGE.291-296(2003)
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| Figure&Table&Reference;FIG.5, REF.3 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;To monitor regional ventilation using vesicular lung sound, we studied the separation of normal lung-sound component in lung sound with continuous adventitious sound. The spectrum of normal lung sound is wide band and has a smooth outline, whereas the spectrum of continuous adventitious sound is narrow band and sharp in shape. We developed a separation filter based on the difference in the spectral shape. We applied morphological opening operation to the short-term spectrum of the mixed lung sound. We assessed the performance of the separation filter. The results showed that the filter well suppressed adventitious-sound component while maintaining normal lung-sound component. (author abst.) |
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