amplitude selection

例句：

1. 1.The amplitude of the signal is measured in decibels.
   信号的振幅以分贝为单位测量。
2. 2. The amplitude selection process involves selecting the appropriate amplitude for each frequency band.
   振幅选择过程涉及为每个频带选择合适的振幅。
3. 3. In amplitude selection, the goal is to maximize the signal-to-noise ratio.
   在振幅选择中，目标是最大化信号与噪声的比率。