What is frequency?

Frequency is a measurement of the peaks and valleys of a sound wave, typically expressed in the ratio of number of cycles per second. The number of complete cycles from wave crest to wave crest is typically called 'cycles' or 'Hertz'.

For example, 200 Hertz would mean that there are 200 complete cycles per second. Now, 200Hz would be a very low frequency, the kind of audio you can feel. Most people talk around 500Hz to 2000Hz (abbreviated as 2KHz, or KiloHertz). The upper limit of our hearing is about 20KHz, and some children can hear upwards of 22KHz.

Hope this helps!

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