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Frequency response of the human ear

The following graph shows the frequency response of the human ear. The line shows the hearing of a person with good hearing. It shows that your ears are most sensitive at a frequency of around 3000 Hz and become less sensitive for frequencies above and below that.

The movement of the eardrum at the threshold of hearing for a frequency of 3000 Hz is a mere 10-7 m smaller than the wavelength of visible light!

© Keith Gibbs 2011