Point a camera with a good mic at it, and bam. And yes, you certainly can get audio recordings. Many enthusiasts will set down an audio recorder near a group of sirens in order to get ambience recordings of the system, along with filming a specific siren during a test.
How do you film a siren? It’s not like it does anything besides make noise, couldn’t you just record the audio from a distance?
Point a camera with a good mic at it, and bam. And yes, you certainly can get audio recordings. Many enthusiasts will set down an audio recorder near a group of sirens in order to get ambience recordings of the system, along with filming a specific siren during a test.