Siren sound effects

A fast two-tone cycle with a slight road echo. Urgent and close, and the echo is what puts it on a street rather than in a mix.

A wailing tone with a deep air horn blasting across it. The horn is what separates a fire engine from every other emergency vehicle.

A slow mechanical rise and fall from a motor-driven horn. The mechanical quality is the period detail, not the melody.

Muffled through closed windows, passing by. It keeps a scene inside while the event happens on the street.

A single sustained tone rising over a whole town, with distant reflections. It covers a landscape rather than a street.

Several vehicles at different distances and patterns. It reads as a major incident, which one siren never does.