Noise reduction is a significant component in creating a professional and suitable work environment as open-plan offices have become a quintessential trend of the 21st century. The most common solutions in noise control include installation of noise absorption barriers and acoustic systems. Bio-based materials show good sound absorption performances, at the same time leaving much lower environmental impact than traditionally used synthetic materials. Research is focused on designating the optimal structure of composite materials in order to obtain a material with high textural qualities of the surface and a noise absorption level that reaches an average noise absorption coefficient value of αw = 0,5 in at least one set of specified frequencies. Following variables were analyzed in the research: the proportion rate of wool and wood shaving fibers, the panel layer thickness within 15cm - 25cm range, the number of layers per sample material. For measuring the acoustic properties of the sample materials an impedance tube was used. The measurements were carried out in 8 different sample categories, total of 40 samples were prepared and tested. The main objective in creating the material was for it to absorb high frequency noises and have physical properties for easy adaption in open-planed public spaces.