I have been researching Australian participatory artists and one of my favourites is Jason Sweeny, I’m taken with a project of his called ‘Stereopublic’. The project exists as an app, and is described as ‘crowdsourcing the quiet’. If you have the app, you can either add a place in your city that you go to to find quiet, or put in your location and source the quiet.. the app will give you directions to this quiet place, so that you can take a minute, be quiet and escape the world.
Here’s the website http://www.stereopublic.net and a video of what the quiet sounds like.