# Can sound produce electricity?

Energies of wind and water can produce electricity. But, can sound energy also be used to produce electricity?

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That's what microphones do. –  ACuriousMind Aug 31 '14 at 17:35
Strictly speaking, only moving-coil and piezoelectric microphones generate electricity. Other types require an external power source to produce a signal. –  steveverrill Aug 31 '14 at 22:58

According to this website, the front rows of a rock concert have a sound intensity of $10^{-1}~\text{W m}^{-2}$. So even if you had a square meter of material that was capable of harnessing all of that energy, that tenth of a watt doesn't get you all that far.