New Windows Break Through Noise

Ambient noise levels or even those of noisy streets represent very very little amount of energy. Not worth trying to regenerate. Thermoacoustics exist and are used to regenerate energy but ad very loud sounds in closed cicuits.

On the other hand double or triple glazing reduces sound levels a lot along with thermal transfer. No need for expensive technology. And don't forget to take care of the window frame that can transfer a lot of noise if not well sealed or damped.

"...an active noise cancelling system that can reduce a 100 decibel noise in half."

So, it attenuates by 6 dB?

I think a 6db reduction is rather weak for the potential cost of the windows. And while I'm not sure how much energy the sound waves could produce, perhaps the wind hitting the windows could add to it. There are devices (I forget what they are called) that convert vibrations to electricity that may be able to be used. But is the $$ worth it? Could the be used under sidewalks?

Thoughts?

I like the energy harvesting potential.
Can you imagine if all the windows in New York could be harvesting noise energy while at the same time reducing noise? after all, the noise reduction would come automatically as the energy is absorbed by the window.
Some needs to run a computer model of this hypothetical situation, I'll bet the energy output would be huge!