Natural sounds are any sounds produced by non-human organisms as well as those generated by natural, non-biological sources within their normal soundscapes. It is a category whose definition is open for discussion. Natural sounds create an acoustic space.
The definition of the soundscape can be broken down into three components: the geophony, non-biological natural sounds that include the effects of water by a stream or waves at the ocean, the effects of wind in the trees or grasses, and sound generated by the earth, itself, for example, glaciers, avalanches and earthquakes; the biophony, all the non-human, non-domestic sounds that emanate from a relatively undisturbed habitat; and anthrophony, all sound generated by human endeavor, whether music, theatre, or electromechanical.