You can never have too many siren recordings! They are so evocative and loaded with meaning.
The theme really lends itself well to the multinational nature of our crowdsourcing group as well because sirens obviously sound different all around the world. Plus, the location in which they are recorded makes such a difference too, e.g. surrounded by skyscrapers as opposed to passing through suburban streets or the countryside. I believe that police sirens are actually the same in New York and London nowadays but I bet you could still often tell them apart in a recording simply from the differing acoustics.
Feel free to record close or distant sirens or passbys – I’m going to create 3 subfolders to cover these different perspectives but if you contribute a recording of just one you do still get access to them all within the main ‘Sirens’ folder.
My only pointers for this theme are: if you submit passbys, try to get the whole approach and fade away. If you submit distant recordings, make sure the sirens aren’t swamped with traffic noise and if you submit close recordings, try and get a decent length of recording to avoid having to do loads of looping. As per usual, if anyone else has any useful advice that they think is worth adding then feel free to comment below.