POROUS PANEL FOR REDUCING NOISE AND MANUFACTURING METHOD THEREOF

摘要

Disclosed is a noise-reducing porous panel. The noise-reducing porous panel of the present invention comprises: a first porous panel unit with a plurality of first through-hole units through which air flows; a second porous panel unit arranged to face the first porous panel, having a plurality of second through-hole units at positions corresponding to the first through-hole units; and noise-reducing panel units connected between the first and second porous panel units, having noise-absorbing pipe units forming air passages radially formed around the first and second through-hole units. The purpose of the present invention is to provide the noise-reducing porous panel capable of effectively reducing noise at a specific frequency band, and a manufacturing method thereof.