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Sound is a periodic event. This means that there is a fixed amount of time between different events.The Frequency component of a sound wave affects the pitch of the sound.

Frequency if the measure of how many cycles a wave complete per second.

Frequency (f) is measures in Hertz

Period (T) in the inverse of infrequency is is measured in seconds

Frequency = Cycles/Second Period = Seconds/Cycle

f = 1/T T = 1/f

Different types of frequency components periodic / aperiodic.


sound that has a measurable frequency


sound that is mostly random

It is assumed the humans can hear frequencies from 20Hz to 20,000 Hz.

20-20KHz Sweep

http://iam.colum.edu/sound/media/sweep20-20.wav 41kb,16 bit 3.7megs