The wail sound slowly alternates between a Hi-Lo unbroken tone. Here are the different siren noises: Wail The different sounds of police sirens vary in frequency, tone, decibels, speed, and sound depending on their urgency and purpose. Are There Different Types of Siren Sounds?Īlthough the average person generally wouldn’t recognize the difference between the varying siren sounds, there are a few distinct sounds that are used in modern siren devices. The original siren invented used a crank that produced the sound when cranked continuously, releasing a piercing and brassy sound when used. Unlike sirens from this mythology, the siren created by John Robinson was not quite the beautiful sound they were looking for. The name siren comes from Greek mythology, a siren was a beast that was said to lure sailors in with their beautiful singing to ultimately take them to their deaths. The Scottish Natural philosopher John Robinson invented the siren and attempted to implement it as a musical instrument in the year 1790, though due to its harsh, shrill tone, it was not used in the musical world for long.

Police sirens were invented in the late 18 th century. The police are as constrained by the law as anyone else (more so in many ways) and the law stated the position the blue light had to be in and that it had to rotate.” The bells were replaced by sirens from 1963 when rotating blue lights appeared. “Police and other emergency vehicles were fitted with silver bells, mounted singly or in pairs, usually low down at the front of the vehicle, usually off-set to the right or left (fire engines often had them on the roof). Police sirens have been in use since the early 1960s where they replaced silver bells, usually mounted somewhere in the front of the police vehicle. Types of Police Sirens – Final Thoughts.

What Are the Different Types of Sirens Used For?.

Are There Different Types of Siren Sounds?.

Siren sounds