This class is missing documentation.
Siren.ar(freq, sharpness: 2, iphase: 0, modPhase: 0, noiseLevel: 0, mul: 1, add: 0)
Siren.kr(freq, sharpness: 2, iphase: 0, modPhase: 0, mul: 1, add: 0)
Copy and paste the text below and save to HelpSource/Classes/Siren.schelp
link::Classes/Siren::