Sometimes you have neighborhoods that do unwanted noises. Could be musical instrument they are trying to learn, DIY constructions or pure noise. Maybe they could have address for tips for less noise.
How does it sound? Similar ideas?
It sounds like you are essentially paying them to not exercise their right to free speech.
If people are making a lot of noise at late hours of the night you should simply ask them to quiet down and they most likely will make less noise.
I do like the idea of giving people an incentive to meet certain standards via bitcoin, just not when "speech" is involved.