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Web Audio

Select operation

1209Hz1336Hz1477Hz1633Hz
697Hz
770Hz
852Hz
941Hz

350Hz & 450Hz continuous

400Hz & 450Hz on 400ms, off 200ms,
on 400ms, off 2000ms

(Subscriber) 400Hz on 350ms, off 350ms

(Equipment) 400Hz on 400ms, off 350ms,
on 225ms, off 525ms

950Hz then 1400Hz then 1800Hz
each on 330ms, off 15ms

(Old) 400Hz on 125ms, off 125ms

(Old) 400Hz continuous

Frequency

Waveform

Sweep to

Credit

Original code © 2011-2015 onlinetonegenerator.com, completed and extended by Kevin Herrmann