backward masking

例句：

1. 1. In the context of digital signal processing, backward masking is a technique used to reduce noise interference.
   在数字信号处理的背景下，反向掩蔽是一种用于减少噪声干扰的技术。
2. 2. The engineers were able to successfully implement backward masking in their project to improve signal-to-noise ratio.
   工程师们成功地在他们的项目中使用了反向掩蔽技术，以提高信号与噪声比。
3. 3. The researchers discovered that backward masking could be used to enhance theclarity of images by selectively blocking certain frequencies.
   研究人员发现，通过选择性地屏蔽某些频率，反向掩蔽可以增强图像的清晰度。