What factors affect the sound-absorbing and noise-reducing effect of color-coated panels?

The effect of sound absorption and noise reduction with the shape of the room, size, sound absorption position also has a great relationship, if the room area is relatively large, people's activities from the source area is relatively close to the words, at this time, the direct sound occupies the main position, this time the role of the acoustic panels will be relatively small, in the room area of the space is relatively small, the source of the sound from the various wall reflections many times with the direct sound mixing, at this time, the role of sound-absorbing panels will be Very obvious, the effect is very good. If the shape of the room is long and thin, more than five times larger than the width, the sound in such a space also need to go through the constant reflection, this time the acoustic effect is better.