I love the Belfast Sound Map. Go, listen to the city. A factory's quitting-time siren on the Duncrue Road; cyclists and walkers on the Lagan Towpath; wind blowing through tubular-steel gates on Black Mountain; road works on Cromac Street. It's all there, and more.
The overview map, clicking on a tag plays a recording.
The long whine of a siren breaks the quiet on Duncrue Road. Time to go home.
Anyone can contribute a digital recording of their own to the map. You upload it via the website. The Belfast Sound Map continues to grow.
The URL is www.belfastsoundmap.org.