| Application of Electret Microphone in the Heart Sound Acquisition |
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| 作者姓名： | QUE Xiao-sheng YANG Hao TANG Rong DAN Chun-mei ZHU Jun |
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| 作者单位： | 1. Key Laboratory of High Voltage and Electrical New Technology of Ministry of Education ; 2. College of Chemical Engineering, Chongqing University,Chongqing 400030,China |
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| 摘 要： | Heart sound is a faint signal which is difficult to be acquired. This paper presents the methods for the heart sound acquisition used electret microphone,including the heart sound extraction project, principle, rules and the impedance conversion of microphone. In order to acquire the useful heart sound, the microphone is shielded by a special device. The clinical experiments have indicated that the first and second heart sound can be almost acquired by the microphone, but it is difficult for the third and fourth , which are affected by sex and bodily form.
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| 关 键 词： | electret microphone acquisition heart sound |
| 修稿时间： | 2007/5/10 0:00:00 |
Application of Electret Microphone in the Heart Sound Acquisition |
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| QUE Xiao-sheng,YANG Hao,TANG Rong,DAN Chun-mei,ZHU Jun.Application of Electret Microphone in the Heart Sound Acquisition[J].Storage & Process,2007(10):33. |
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| Authors: | QUE Xiao-sheng YANG Hao TANG Rong DAN Chun-mei ZHU Jun |
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| Institution: | 1. Key Laboratory of High Voltage and Electrical New Technology of Ministry of Education ; 2. College of Chemical Engineering, Chongqing University,Chongqing 400030,China |
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| Abstract: | Heart sound is a faint signal which is difficult to be acquired. This paper presents the methods for the heart sound acquisition used electret microphone,including the heart sound extraction project, principle, rules and the impedance conversion of microphone. In order to acquire the useful heart sound, the microphone is shielded by a special device. The clinical experiments have indicated that the first and second heart sound can be almost acquired by the microphone, but it is difficult for the third and fourth , which are affected by sex and bodily form. |
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| Keywords: | electret microphone acquisition heart sound |
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