May I ask where this is? In San Francisco, there are over a 100 speakers for the Tuesday noon siren. When the speakers did ring off, a fascinating effect took place, where what sounded like echo was, in fact, as you describe, a matter of hearing the sirens from different distances.
May I ask where this is? In San Francisco, there are over a 100 speakers for the Tuesday noon siren. When the speakers did ring off, a fascinating effect took place, where what sounded like echo was, in fact, as you describe, a matter of hearing the sirens from different distances.
Hi. Different places have sirens for different reasons, often for some sort of weather-related emergency, like tornados or earthquakes. In addition to emitting an actual siren sound, they can be used as a public address system in times of emergency. They used to ring out here in San Francisco on a weekly basis as a test. Here's some information on them:
May I ask where this is? In San Francisco, there are over a 100 speakers for the Tuesday noon siren. When the speakers did ring off, a fascinating effect took place, where what sounded like echo was, in fact, as you describe, a matter of hearing the sirens from different distances.
In Illinois. I think it's the whole state. I'm 65 miles west of Chicago near open farm land.
Thanks for that.
Why do you have sirens? Sorry, I'm in Australia and don't know what this means.
Hi. Different places have sirens for different reasons, often for some sort of weather-related emergency, like tornados or earthquakes. In addition to emitting an actual siren sound, they can be used as a public address system in times of emergency. They used to ring out here in San Francisco on a weekly basis as a test. Here's some information on them:
https://abc7news.com/san-francisco-sirens-emergency-911-department-of-management/13664811/
Here's general information from the National Weather Service:
https://www.weather.gov/dvn/sirenFAQ