ELI5, why can’t we convert sound to electrical energy for use? I know microphones convert sound to electrical signals but why is producing energy from waste sound not viable?
In: Physics
Sound that produces a useful quantity of power is stupid loud
At 120 dB, if you capture all the energy from sounds passing through 1 square meter then you’ll get 1 watt of power. Just a single watt.
You want to run a 1200 watt microwave off sound captured in a reasonable area? Well 12 m^2 of 140 dB sound will do the trick but it’ll be quite uncomfortable. 150 dB would let you do it with just 1.2 m^2 but that’s the sound of a jet engine a few meters away so you’ll go deaf pretty quickly and would be better off just using the jet as a generator
There just isn’t enough energy in sounds
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