整个检查过程同步记录心电图及心音图。
目的：探讨心音图运动试验（PCGET）评估心肌收缩力及心力储备的价值。
Objective: Explore the value of phonocardiogram exercise test (PCGET) to evaluating cardiac contractility.
这种微音器在计算机数据采集系统中应用，可采集到高信噪比的心音图与语音图。
The microphone is used in a data acquisition system on a personal computer. The phonocardiogram and speech signals possessing high signal-to-noise ratio can be obtained.
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。
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.
经小波变换的三维心音图更为直观详尽地反映出各组心音信号在不同时域、频域与强度范围内细节性的信息。
The three-dimensional phonocardiogram after wavelet analyzing could describe all the information of frequency domain, time domain and amplitude domain perfectly.
经小波变换的三维心音图更为直观详尽地反映出各组心音信号在不同时域、频域与强度范围内细节性的信息。
The three-dimensional phonocardiogram after wavelet analyzing could describe all the information of frequency domain, time domain and amplitude domain perfectly.
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