The pattern of disruption generated by the flow of energy even though it perpetuates away from the direction of the sounds across a medium is called sound waves.
The propagation medium can be a solid, a liquid, or a gas.
Sound waves are classed as mechanical waves because they pass through a physical medium such as air, liquids like water, or metals like silver. A sound wave's frequency is defined as the number of rarefactions and compressions per unit of time.
The fact that a mechanical wave must propagate through a physical medium such as air, water, or metal defines it. The propagation of sound waves necessitates the use of a medium.
A mechanical wave of vibration that travels through a medium is referred to as sound.