A natural sounds is that of an actual source.
Natural sounds are unadorned production sounds.
In film and television, many natural sounds do not meet everyone's expectations . Natural sounds was popular in the early days of radio and film. Our perception of natural sounds has become so influenced by ideology about sounds that we are often disappointed with reality. A characteristic sound is what a sound should be according to someone's perception of the sound. When a natural sound is manipulated to achieve a desired effect, it becomes characteristic.