acoustic ar t wall panels design by Okko and Mia Maria Design Pieceofcake, acoustic art wall panels. Depending on the acoustic and estethic requirements the manufacturing and assembly of the panels is possible in different options. Available in customized sizes and in a wide range of colour and pattern combinations. Alu Tex Textile is an acoustic fabric stretched over an aluminum frame filled with 50 cm of acoustic elements. aPerf is Frameless acoustic panels, made out of 25-aPerf® toxicologically harmless, mostly recycled polyester, 100 % recycable and nonallergic.