acoustics
n
1 [pl] (also acoustic [sing]) qualities of a room, hall, etc that make it good or bad for carrying sound （房间, 大厅等的）传音效果, 音响效果
The acoustics of this concert hall are excellent. 这个音乐厅的传音效果极好.
2 [sing v] scientific study of sound 声学; 音响学.