Then, physiological parameters of heart feature and threshold method are used to locate the first heart sound.
然后应用心脏生理特征参数和阈值方法对第一心音进行了定位。
To achieve this, noise in the PCG signal should be removed, and a segmentation method should be used to locate the first heart sound.
为此，需要消除PC G信号中的噪声，并用分段算法定位第一心音。
The results showed that the first heart sound energy fraction were significantly different in the normal group and the heart murmur group.
试验结果表明，在正常组和返流性心脏杂音组间，第一心音能量分数存在显著性差异。
According to the valvular theory, the vibrations affected by the mitral and tricuspid valves closure in early systole produce the first heart sound (S1). S1 usually includes many frequency components.
根据瓣膜原理，第一心音(S1)是在心脏收缩期由二尖瓣和三尖瓣关闭时引起的振动产生的，含有多个频率分量。
This singing sound is shocking our heart, but in the aftertaste this first heart loves slowly song.
这歌声震撼着我们的心，而慢慢地回味这首心中爱的歌。
Do you want to know the heart of the dirty is a polyphone, it read a fourth is the first sound.
你要知道心脏的脏是个多音字，它读第四声也读第一声。
The amplitude of first heart sound is a normal measurement of cardiac contractility, and phonocardiogram (PCG) can be used in the study of cardiac contractility reserve.
第一心音的幅值是心脏收缩能力的标准度量，心音图(PCG)可以用于心力储备的研究。
Methods: withdraw the envelope of heat sounds by using Mathematic Morphology and normalized Shannon energy, extract first heart sound and the second heart sound.
利用数学形态学和归一化香农能量两种方法分别提取了心音的包络，突出了第一心音、第二心音等特征。
I was pretty sure that I fell in love with piano when I touched it for the first time, because the sound of the piano touched the deepest part of heart.
第一次碰琴的时候，我感觉我就爱上了钢琴。因为琴音的回响与共鸣感染到了我的内心。
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, w…
临床实验表明，利用驻极体传声器基本上能采集到正常的第一、第二心音，但对有病理信息的第三、第四心音却不易正确采集到，这与患者性别和胖、瘦等因素均有关系。
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, w…
临床实验表明，利用驻极体传声器基本上能采集到正常的第一、第二心音，但对有病理信息的第三、第四心音却不易正确采集到，这与患者性别和胖、瘦等因素均有关系。
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