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Siren
The sound of a loud noise-making device used to provide warnings to people nearby. A siren typically consists of a single pitch that changes either smoothly or abruptly on timescales around one second.
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Police car (siren)
The sound of a siren fitted to a ground vehicle used by police when responding to incidents.
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►Ambulance (siren)
The sound of a siren fitted to a vehicle used to transport sick or injured people to a hospital or other medical facility.
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►Fire engine, fire truck (siren)
The sound of a siren fitted to a vehicle used to transport firefighters and their equipment to an emergency situation.
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►Civil defense siren
The sound of a siren used to provide emergency population warning of approaching danger such as hurricanes, earthquakes, or military attacks.
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