正常男性第二心音的音强测定研究
Phonometric study of the second heart sound in normal man.
作者信息
Longhini C, Toselli T, Masotti G, Bellotti E, Ansani L, Musacci G F, Michelini S
出版信息
Jpn Heart J. 1983 Jul;24(4):557-61. doi: 10.1536/ihj.24.557.
PMID:6645049
Abstract
The fast Fourier transform (FFT) was employed to analyze the frequency spectra of the second heart sound in 19 healthy subjects. The data obtained show that the second heart sound is mainly composed of low-frequency vibrations, and that the frequency vs. amplitude spectra for the various filters do not exceed 150 Hz. The different spectra obtained can represent a useful reference to compare with pathological acoustical findings.
摘要
采用快速傅里叶变换（FFT）对19名健康受试者的第二心音频谱进行分析。所获得的数据表明，第二心音主要由低频振动组成，并且各种滤波器的频率与振幅频谱不超过150赫兹。所获得的不同频谱可为与病理声学发现进行比较提供有用的参考。
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