A#7 — 3729.31 Hz
A#7 (MIDI 106) vibrates 3729.31 times per second at standard concert pitch. Play the reference tone below, or tune to it with the online tuner.
A#7 at different reference pitches
| Reference (A4) | A#7 frequency | Used for |
|---|---|---|
| 415 Hz | 3517.42 Hz | Baroque pitch |
| 432 Hz | 3661.50 Hz | “Verdi” pitch |
| 440 Hz | 3729.31 Hz | Standard concert pitch |
| 442 Hz | 3746.26 Hz | European orchestras |
| 444 Hz | 3763.21 Hz | European orchestras |
Physical properties
- Period: one cycle every 0.27 ms
- Wavelength in air: ≈ 9.2 cm (at 20 °C, 343 m/s)
- MIDI note number: 106
- Octave up: A#7 = 7458.62 Hz · Octave down: 1864.66 Hz