Sound absorption performance of light-frame timber construction wall based on Helmholtz resonator

In order to improve the sound absorption performance of light-frame timber construction wall, this paper combined aperture embedded wall unit structure with actual building based on Helmholtz resonance principle design and fabricate two sets structures: a new (experimental group) conventional (control group). The coefficients structures were measured by reverberation chamber test, related analysis was carried out. results showed that exhibited good in low frequency range; particular, perfect effect basically achieved at 100 Hz. Compared structure, test range enhanced greatly. While value coefficient increased range, bandwidth expanded certain extent, average noise reduction both improved. This explored applicability practical structure. research could provide reference for reducing indoor pollution creating better living environment.