The frequency range of R-wave has been determined by use of frequency analysis.
并且根据频谱分析的方法确定了瑞利波的频率分布范围。
Experiment results prove that the system can acquire signals in the frequency range designed for sound card correctly, and can be applied in the domains of data acquisition and general analysis.
实验结果表明：该系统能够正确采集声卡设计频率范围内的信号，可用于该范围内的一般数据采集与应用。
This paper describes the principle, construction, performance and error analysis of the standard apparatus for underwater sound pressure in high-frequency range.
本文叙述高频水声声压标准装置的原理、组成、性能和误差分析。
应用推荐