resonant

The opera singer's resonant voice filled the entire concert hall without the need for a microphone.

(Chinese) 歌剧演唱家洪亮的声音响彻整个音乐厅，不需要麦克风。

He spoke in a deep, resonant tone that commanded the attention of everyone in the room.

(Chinese) 他以深沉洪亮的语调说话，引起了房间里每个人的注意。