high pitch loudspeaker

例句：

1. 1. The engineer used a high-pitched loudspeaker to communicate with the team.
   工程师使用一个高音扬声器与团队沟通。
2. 2.The concert featured a high-pitched loudspeaker system that was designed for clarity and precision.
   音乐会采用了一种高音扬声器系统，旨在提高清晰度和精确度。
3. 3.The high-pitched sound of the bird's call made it difficult for the listener to focus on the speaker.
   鸟的叫声高音使得听众难以集中注意力听演讲者讲话。