video preemphasis

例句：

1. 1. The audio pre-emphasis technique is used to emphasize the beginningof a sound wave.
   音频预增强技术用于强调声波的开始。
2. 2. In video editing, video pre-emphasis canbe used to enhance the clarity and resolutionof the video.
   在视频编辑中，视频预增强可以用于提高视频的清晰度和分辨率。
3. 3. The audio pre-emphasis effect is often used in movies tomake the dialogue more impactful.
   音频预增强效果通常用于电影中，使对话更加有力。