D7 — 2349.32 Hz
D7 (MIDI 98) vibrates 2349.32 times per second at standard concert pitch. Play the reference tone below, or tune to it with the online tuner.
D7 at different reference pitches
| Reference (A4) | D7 frequency | Used for |
|---|---|---|
| 415 Hz | 2215.83 Hz | Baroque pitch |
| 432 Hz | 2306.60 Hz | “Verdi” pitch |
| 440 Hz | 2349.32 Hz | Standard concert pitch |
| 442 Hz | 2360.00 Hz | European orchestras |
| 444 Hz | 2370.68 Hz | European orchestras |
Physical properties
- Period: one cycle every 0.43 ms
- Wavelength in air: ≈ 14.6 cm (at 20 °C, 343 m/s)
- MIDI note number: 98
- Octave up: D7 = 4698.64 Hz · Octave down: 1174.66 Hz