wah.. you guys need to go back to physic chapter 1. Equilibrium of energy, you can not generate more electricity from the input... a fan is used to move air.. not to get electricity.

Actually its funny, this is the 3rd time this week I've heard of this, a dude i know at the local university is writing up a thesis on what he thinks using sound energy to power a battery. Its quite interesting hearing him talk about it.

i don't think its possible cos the energy produce is just too little. Normal talking can only deliver about 10^−5 watts, assuming you can convert 100% of it. Very unlikely to be able to charge a battery.



http://en.wikipedia.org/wiki/Sound_power

hi spammer, kinda quiet nowadays huh?

any relation to the topic?

i think to harness the sound waves, we need a big transducer to absorb any meaningful energy.
even if we have 90% or more (thats actually a very good value) of energy being converted, we still cannot produce alot of energy.

why? because sound waves carry very little energy. so there is no practical usage of this idea.
i believe