signal pretreatment

例句：

1. 1. In the field of signal processing, this method has been proven to behighly effective.
   在信号处理领域，这种方法已被证明非常有效。
2. 2. The signal enhancement algorithm isdesigned to improve the quality of the receivedsignals.
   信号增强算法旨在提高接收到的信号质量。
3. 3. During the preprocessing stage, thedata is first cleaned and then transformed intoa suitable format for further analysis.
   在预处理阶段，首先对数据进行清洗，然后将其转换为适合进一步分析的格式。