The reverberation usually determines the length of the sound, which has a direct impact on the color and sharpness of the sound. Under normal circumstances, when male bass singing, the reverberation time can be adjusted shorter to increase the clarity of the sound; if it is a female tweeter singing, it can be appropriately extended to the sound time to increase the color of the sound. For the venue of singing, if the walls around the room are made of wooden board materials, then it has a certain reverberation effect. At this time Structure, or sound absorption materials such as velvet curtains, such a room lacks noise, which should be adjusted to lighten up the sound time to avoid drying the sound. Also, the number of audiences at the scene also has a great impact, because the audience's costumes are on the sound of the sound

It also has a great absorption effect. Generally speaking, tunnels can choose a sense of rolling time in 1-2 seconds.