Patent ID: 8820476

Claim:
An assembly wall having improved sound absorption/insulation performance, comprising: plate members separated from each other to face each other and each forming at least one layer; stud members alternately placed on different inner surfaces of the plate members and comprising a web formed with a plurality of first perforated holes having at least one diameter and configured for sound absorption; an insulation member interposed in a space defined between the plate members and the stud members; and a sheet member adjoining an outer surface of the insulation member, the sheet member interposed along with the insulation member in the space between the plate members and the stud members, and formed with a plurality of second perforated holes having at least one diameter configured for sound absorption, wherein the sheet member, the plate members, and the stud members form hollow spaces of resonators configured for sound absorption in a low frequency band, and wherein the diameters of the first and second perforated holes are selected for sound absorption of a frequency band.