What is this (pic)

[BreakfastAtLitanies]

What is this? I've had a google but still no idea what it does. It's been installed on a lamppost right outside my house!

As it’s got a mic on top it could be to assess sound pollution.
Or it could be something far more sinister, or far more interesting.

Yep, it's a big ol' microphone!

Sounds like they've been around a long time. Local noise issues?

www.theguardian.com/society/2005/may/04/drugsandalcohol.politics

I couldn't live in a quieter area, tbh! So surprised if that's the reason