选择一个合适的采样频率是保证数据采集系统可靠工作的关键。
An appropriate sampling frequency is the key of the data acquisition system reliable work.
对文件大小的贡献，按重要性的顺序，依次是视频比特率、音频采样频率、音频比特率，然后是帧速。
Contributing to the file size, in order of importance, are the parameters that set the video bit rate, audio sample frequency, audio bit rate, then frame size.
采样定理是采样过程中所遵循的基本规律，它指出了重新恢复连续信号所必需的最低采样频率。
In the course of the sampling, the sampling theorem is a basic rule and points out the least sampling frequency for reconstructing the signals.
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