Karakterisasi Dua Dimensi Difuser MLS (Maximum Length Squence) dengan Model 10101010 yang Terbuat dari Limbah Kertas dan Bahan Kayu Keysha Wellviestu Zakri, Melania Suweni Muntini, Susilo Indrawati

Abstract

The common problem which occurred inside closed room/auditorium is echo. The echo problem could be minimize using absorbing material, but using this material could lend to another problem, which is the sound distribution is not equal inside the room. Using diffuser is one of the correct choice to solved this problem, because beside could difuse the sound, diffuser does not reduce the sound energy inside the room. This experiment is conducted to study about MLS (Maximum Length Sequence) diffuser type 10101010 which made of waste paper and wood material. Based on the experiment result, the diffuse pattern between diffeser from waste paper and wood material is not quietly different. The significant difference is the sound pressurelevel which diffused by waste paper is lower than the wood based material. This result could be happen because the waste paper based material is not only diffuse the incoming sound, but also could absorb some of it, because of this characteristic, this kind of material is called difsorber (diffuser and absorber material).