two band filter

例句：

1. 1.The two-band filter was used to enhance the signal-to-noise ratio in the audio data.
   使用双带滤波器来提高音频数据的信号与噪声比。
2. 2.In the medical field, two-band filters are commonly used for isolating specific frequencies.
   在医疗领域，双带滤波器常用于隔离特定频率。
3. 3. The engineers designed a two-band filter to filter out noise from the transmission line.
   工程师们设计了一个双带滤波器，用来从传输线上过滤掉噪音。