The terms 'noise' and 'sound' generally refer to acoustic energy in the atmosphere and 'vibration' refers to acoustic energy in condensed media such as the ground, water and built structures.
In environmental management, 'noise' is taken to mean 'sound' or 'acoustic energy' and includes mechanical vibration.
High levels of noise are generally unpleasant and can have health implications. Elevated levels of noise in a neighbourhood can result in reduced amenity. Given the option, people and animals tend to leave areas with high ambient noise levels.
In general, the level of noise emitted from a device or an activity can be controlled.
The Environment Protection Policy (Noise) 2009 provides the principles and objectives for reducing health risks and unreasonable interference with human enjoyment of the environment by the emission of noise.