Ten Watt Range
Ten real tones, 1 Hz to 10 Hz, one hertz apart. Pick a step to start it and pick it again to stop. Everything is generated live — nothing is downloaded or stored.
Tones are generated live in your browser at exactly 1–10 Hz. Below roughly 20 Hz nothing is audible on ordinary speakers, so the carrier pulses a 432 Hz tone at the same rate. Keep the volume moderate.