Sound in brief but remarkeable terms is a vibration, that our ears percieve by the sense of hearing. Most commonly vibrations travel to our ears via the air. The ear then converts these sound waves into nerve impulses that are sent to our brains, where the impulses become sound. To say all that in a more technical language: Sound “is an alternation in pressure, particle displacement, or particle velocity propagated in an elastic material” (Olson 1957). Sound is also a series of mechanical compressions and rarefactions or longitudinal waves that successively propagate through media that are at least a little compressible. What causes sound waves is known as “the source of waves”. Examples of sounds sources is: A violin string that vibrates upon being bowed or plucked.
The four characteristics of sound are frequency, wavelength, amplitude and velocity.
The frequency of sound is the number of air pressure oscillations per second at a fixed point occupied by a sound wave.
The amplitude is the magnitude of sound pressure change within the wave. Basically this is the maximum amount of pressure at any point in the sound wave....
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