CAJ | 학술논문

搭载Android智能手机平台，结合了梅尔倒谱系数和共振峰特征参数，在安卓平台上设计开发出一款集心音采集、心音显示以及心音识别等功能的心音身份识别系统。在该系统中，首先对采集的待测心音信号进行数字化、预加重、分帧、加窗处理，然后提取出心音信号的梅尔倒谱系数特征参数，利用动态时间规整算法将其与数据库模板心音逐一进行模式匹配，并将拥有最小欧氏距离的数据库模板心音作为最终识别结果，最后展示出待测心音和数据库所有模板心音的共振峰特性对比图，定性地反映待测心音和数据库模板心音的差异，给用户直观的判断和感受，进一步认证识别的结果。系统界面简洁，操作方便，识别速度较快，实现了真机运行，并达到了预期效果。
탑재Android지능수궤평태，결합료매이도보계수화공진봉특정삼수，재안탁평태상설계개발출일관집심음채집、심음현시이급심음식별등공능적심음신빈식별계통。재해계통중，수선대채집적대측심음신호진행수자화、예가중、분정、가창처리，연후제취출심음신호적매이도보계수특정삼수，이용동태시간규정산법장기여수거고모판심음축일진행모식필배，병장옹유최소구씨거리적수거고모판심음작위최종식별결과，최후전시출대측심음화수거고소유모판심음적공진봉특성대비도，정성지반영대측심음화수거고모판심음적차이，급용호직관적판단화감수，진일보인증식별적결과。계통계면간길，조작방편，식별속도교쾌，실현료진궤운행，병체도료예기효과。
In this paper,MFCC and formant parameters are used for the identification of heart sounds based on Android platform. The heart sound identification system is designed with lots of functions on Android platform,such as the collection,displaying and identifica-tion of heart sounds. In this system,firstly the heart sound signal of collection is conducted for digitalization,pre-emphasis,framing,and windows adding. Then the MFCC characteristics parameters of heart sound is extracted,use DTW algorithm to do pattern matching with heart sound of database template and choose the heart sound which has the minimum Euclidean distance as the final identification result. Finally,the comparison chart about formant features of the collection heart sound and heart sound templates in database will be demonstra-ted which reflect the differences between them qualitatively. It will give users intuitive judgment and experience which will further authen-ticate the result of identification. The system interface is simple and easy to operate. It has a fast speed of identification and is able to run on a real machine,reaching the expected results.