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is it possible to convert sound (noise) energy into electrical energy?

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zurgh

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how can i convert noise into something useful like electrical energy.. thanks
 


I think zurgh wants to tap the zero point field for limitless free energy.:idea: It will be used to operate a perpetual motion device.:wink:
 

It is possible to harvest acoustical energy. The problem lies in
"useful". Basically any room you could stand to be in, won't
deliver enough energy to power more than a small circuit over
a short burst of time, at the cost of some elaborateness.

"Free" does not mean cost effective. Emphasis on effective.
 

thank for your replies.. i just wanted to prove by that using sound energy converted to electrical it can power electronic gadgets. and be used as an alternative source of electricity.. :grin:
 

A simple example: A sound level of 80 dB (unweighted) corresponds to a power of about 100 µW/m². Assume a 12" speaker with an efficiency of 10% as transducer, so you can harvest 0,7 µW.
 

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