In the time domain, sound is described as a sequence of pressure changes (oscillations) that occur over time. Sound waves can be mathematically described in two ways, that is, in two domains.
Thus, a sound wave propagating outward from a vibrating object can reach the eardrum of a listener causing the eardrum to vibrate and initiate the process of hearing. The sound wave may also be reflected from the object or it may diffract around the object. When the pressure wave encounters another object, the vibration can be imparted to that object and the pressure wave will propagate in the medium of the object. A pressure wave is propagated outward from the vibrating source. Sound is derived from objects that vibrate producing pressure variations in a sound-transmitting medium, such as air. Hearing allows one to identify and recognize objects in the world based on the sound they produce, and hearing makes communication using sound possible.
0 kommentar(er)
