Buy an amazing wooden wall art acoustic sound panel. Original handmade eco-friendly sound diffuser art panel made in Greece. Enjoy free shipping worldwide This product is an original handmade product created in Greece. It is made of various type of woods. It forms an abstract wall art mosaic made of reclaimed wood blocks. Each piece is handmade cut and painted on hand. This hanging wall art has sound absorbing properties. It is called a sound diffuser. It improves sound diffusion in a space. This product is ready for dispatch. Reproduction is possible. Please notice that some differentiations in tints and thicknesses should be expected. We include FREE SHIPPING in the price. ***Materials used Plywood birch Pine wood Oregon Niangon wood from Africa iroko wood from Africa *** Dimensions and weight The length is 140cm and height 60cm. The depth is 10cm, Weight: 40Kg Also available: 40x40cm, 15Kg 60x40cm, 25Kg 100x60cm, 30Kg It can be hanged with a wooden stand in the back You can either screw a base (included) into the wall. Or you can hang it from hooks we include ***Time of process and shipping Estimated time for preparation: 10 days Estimated time of shipping: 5 to 10 days with Greek Post office The Shipping cost included in price, therefore shipping is free of charge. View my main page with all my artworks *** What is a sound diffuser anyway? Acoustic diffusers are specially crafted sound treatment structures that diffuse an incoming sound evenly. Typically, a sound that strikes a surface is absorbed, reflected, or transmitted. Diffusers are typically used in concert halls, performance venues, and recording studios. The choice of building material to make a diffuser is endless. Source: wikipedia ***Some history about sound and architecture… After the Greco-Roman antiquity, Leonardo da Vinci (1452-1519) realized that air was needed, among other things, as a means of spreading sound and that the sound spread at a finite speed. Physical study and interpretation of acoustics made significant progress with Galileo (1564-1642) and his contemporary, Marin Mersenne (1588-1648), who determined experimentally the mathematical relationships between frequency, length, mass of a vibrant string, completing the work of the Pythagoreans 2000 years ago. Between 1630 and 1680, many researchers, including Mersen, conducted experimental measurements of the speed of sound in the air. From the 19th century until the 19th century. many scholars have devoted their studies to hearing problems. However, all were limited to studying the physical phenomenon and much less to normal acoustics and psychoacoustics. Source: wikipedia