External timber cladding is the usual thought process but interiors can be the perfect placements for exterior siding. Timber cladding wall is a great way to create acoustical wall panels. Whether you are building or remodeling a full-scale recording environment or just want to improve the sound of your home theatre system natural wood works great with sound waves. Using natural wood indoors is a great way to bring the feeling of nature into your home. The wood has warmth that plaster, dry wall, brick or concrete lack.
With wood there are so many options. You could just leave it raw cut although this does create the risk of splinters. You could take the raw wood and sand it smooth still leaving the natural look Melamine Foam and because it is indoors, it will not rot unless it is exposed to water from another source. A popular finishing method is to stain the wood. This allows for a variety of looks. You can have the wood grain of any type of tree with the color of any other type of tree. An example would be white pine board with a dark walnut stain. These types of combinations are endless. By staining only, there is still a flat non-reflective surface.
If you are looking for shine, brightness or sparkle then there are 3 choices, oil, varnish, or lacquer. With oil you would leave the timber cladding wall unstained and rub in several coats of linseed oil or tung oil into the wood. Then when the wood started to dull you could repeat this process. With varnish or lacquer, you could use stain or not, then you would add the varnish in several coats drying in-between.