These are handmade art pieces that are representations of sound waves based on various sounds. The first one I ever made was of my son saying, "Daddy".
These can be made of just about any sound: a dog barking, a grandparent's voice, a car horn, a child laughing, etc. Whatever the client wants captured in visual form.
Size: Generally between 4-6 feet depending on the size of the wall where it's going to hang. Height depends on the dynamics of the sound.
Wood: Maple, cherry or walnut, oil finish with protective top coat.