A dub siren is a type of synthesizer used predominantly in Dub. It is usually a relatively simple oscillator, housed in a box, often allowing for a variety of waveforms to be altered by turning potentiometers controlling pitch, rate and other parameters. Dub sirens are frequently activated by a button, sometimes able to be toggled between continuous synthesis with one button press, or sound emission only when the button is held.[1]
Thought to have been originated by sound systems, dub sirens are used predominantly to generate a series of rhythmic pitches in dub and reggae music.