Frequency is one of the properties of sound or noise. A sound with a high frequency is said to be high-pitched and a sound with a low frequency is low-pitched.
There is a
remarkably wide range of frequencies and sound pressure
levels over which the human ear can detect. The following
diagram shows the audible range of a normal human
ear. Please click on the demo button to see the details.
The audible sound pressure
range is from 0 dB to 120 dB.