How electricity can be produced from noise?

Question

steps to produce electricity rom noise

Answer 1

I assume you mean audible noise, rather than signal noise, in which case you can just use a microphone. However you will get very very little electricity from it.

The power density of sound is very small unless you happen to have a truly deafening sound source.

As an example, suppose you have a 100 dB sound, the power density of that is 0.01 W / m^2. Note that's per meter squared, and a microphone will only have a cross section of maybe a centimetre squared. Hence you could get 0.000001 W of power, assuming a perfect microphone with no losses. With the same setup, you could get a power of 1 W for a sound source of 160 dB.

Answer 2

it is possible but the energy needed to create a sound loud enough to generate electricity would be astronomical, and the output would be quite small.

Answer 3

Electricity can be produced if the noise has very clear soundwaves that can be modified to electromagnetic waves as Alexander Bell did.

The best way is to get metal magnetic strips that can create a lot of elctromagnetic waves. Connect them so that the every signal can be carried a long way. Now if you hit the metal strips really hard at one end you may just be able to see sparks coming out of the end produced by protons and electrons colliding into each other as sound waves transform in electromagnetic waves. One thing that is very important is that there must be a good conductor of electricity between the metal strips.