Civil siren of the "national alert signal", during tests on the first Wednesday of the month: 1 cycle of 5 periods (61 seconds).
This is a realistic montage made using this imperfect sound, so feel free to do the same to make your siren sound like what you have in mind: bigsoundbank.com/national-alert-signal-remalard-61-s3257.html. UCS Category: ALRMSirn. Duration: 01:46.
Country soundscape: rumor, field crickets and song of birds. Sound recording on May 7, 2020 around 2:30 p.m. in France, in full confinement linked to COVID-19. UCS Category: AMBRurl. Duration: 01:44.