delta amplitude

例句：

1. 1. The difference between the two signals is the delta amplitude.
   两个信号之间的差异就是差分振幅。
2. 2. In signal processing, the delta amplitude is used to detect noise in a signal.
   在信号处理中，差分振幅用于检测信号中的噪声。
3. 3. The delta amplitude is a measure of how much energy is concentrated in a particular frequency range.
   差分振幅是衡量特定频率范围内能量集中程度的指标。