刚刚有重大发现！植物纤维棉（棉絮）与人工纤维棉（玻璃棉、岩棉）的隔音效果一样。
刚刚在一个国外资料中看到：
Fiber glass and cellulose are the two most commonly
available insulation materials used for sound control.
Cellulose manufacturers claim that their insulation,
when used in a partition, gives higher STC values
than fiber glass insulation. This, however,is not
accurate.
The fact is there is no significant difference in STC
ratings between using fiber glass or cellulose insulation.
This has been scientifically proven by numerous
sound transmission loss tests conducted at independent
laboratories. Test results have shown STC ratings
for walls using either cellulose or fiber glass insulation
are within 1 or 2 points of each other.