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Ambulance Siren

An ambulance siren is a loud, attention-grabbing sound emitted from an ambulance to alert people and vehicles of its presence as it responds to an emergency.

Separate Sounds for Ambulance Siren and Police Siren

Transport

For the purpose of early patient transport an ambulance may use as signal the wailing siren sound having rising and falling loop; while a police vehicle in emergency service will use siren with passing sound effect with short brust.