AOA Tone Simulator¶
Hear exactly what OnSpeed sounds like. Click Sound On, then move the AOA slider to sweep through the full range of audio cues — from silence through L/DMAX, ONSPEED, slow, and stall warning.
Turn on sound
Click Sound On and move the slider. Use headphones for the best experience. The tones match the actual firmware output: 400 Hz low-pitch tone, 1600 Hz high-pitch tone, with pulse rates interpolated exactly as in flight.
What You're Hearing¶
| Region | Tone | Pilot Action |
|---|---|---|
| Fast (below L/DMAX) | Silence | No action needed |
| L/DMAX | Low-pitch pulsing (400 Hz, 1.5–8.2 pps) | Normal deceleration |
| ONSPEED | ONSPEED solid tone (400 Hz) | Hold this |
| Slow | High-pitch pulsing (1600 Hz, 1.5–6.2 pps) | Push (add power or lower nose) |
| Stall Warning | Stall warning buzz (1600 Hz, 20 pps) | Unload immediately |
The pulse rate increases as you approach the next boundary — listen for the tempo change as you sweep the slider through each region. The stall warning at 20 pulses per second is unmistakable.
How This Maps to Flight¶
In the air, moving the slider left (lower AOA) is like speeding up, and moving it right (higher AOA) is like slowing down. The colored bands on the left show the tone regions. As you increase AOA, the indicator line sweeps upward through the bands — just like slowing down in the airplane. The aircraft pitches to match.
The tones are the same regardless of weight, G-loading, or altitude — OnSpeed uses angle of attack, not airspeed, so the cues are always correct.