Db0 — 17.324 Hz
Db0 (D-flat 0) is 17.324 Hz in standard equal temperament at A=440 Hz. It is MIDI note number 13.
Db0 Frequency in All Tuning Systems
| Temperament | Frequency (Hz) | Cents from Equal | Common Usage |
|---|---|---|---|
| Equal Temperament | 17.324 Hz | 0.00 | Modern standard; piano, fretted instruments |
| Pythagorean | 17.402 Hz | +7.78 | Medieval/early music; string ensemble open fifths |
| Just Intonation (Major) | 17.442 Hz | +11.75 | A cappella vocal, barbershop, Renaissance |
| Just Intonation (Minor) | 17.442 Hz | +11.75 | Minor-key vocal music, string ensembles |
| Quarter-Comma Meantone | 17.187 Hz | -13.75 | Renaissance keyboard, early Baroque organ |
| Third-Comma Meantone | 17.149 Hz | -17.58 | Renaissance vocal music in minor keys |
| Sixth-Comma Meantone | 17.228 Hz | -9.62 | Baroque orchestral ensemble compromise |
| Werckmeister III | 17.344 Hz | +2.00 | Baroque keyboard; Bach contemporaries |
| Werckmeister IV | 17.265 Hz | -5.91 | Baroque keyboard, strong key contrast |
| Werckmeister V | 17.344 Hz | +2.00 | Specialized Baroque keyboard |
| Kirnberger III | 17.329 Hz | +0.50 | Classical-era keyboard, keys near C major |
| Vallotti | 17.344 Hz | +2.00 | Baroque/Classical orchestral tuning |
| Young (1799) | 17.344 Hz | +2.00 | Classical-era keyboard |
| Bach/Lehman | 17.363 Hz | +3.89 | Bach keyboard works, Well-Tempered Clavier |
| Neidhardt | 17.344 Hz | +2.00 | 18th century keyboard, near-equal alternative |
| Kellner (Bach) | 17.344 Hz | +2.00 | Bach keyboard reconstruction |
Positive cents = sharper than equal temperament. Negative cents = flatter. 100 cents = 1 semitone.
Db0 at Different Concert Pitches
The same note varies in frequency depending on the concert pitch standard used by your ensemble.
| Concert Pitch | Frequency (Hz) | Common Usage |
|---|---|---|
| A = 440 Hz (ISO standard) | 17.324 Hz | US, UK, and most modern ensembles worldwide |
| A = 442 Hz | 17.403 Hz | Many European orchestras; France, Germany |
| A = 443 Hz | 17.442 Hz | Berlin Philharmonic; some US orchestras |
| A = 432 Hz | 17.009 Hz | Alternative tuning; Baroque revival |
| A = 415 Hz (Baroque) | 16.340 Hz | Historically-informed Baroque performance |
f = f_at_A440 × (concert_pitch / 440)
Db0 and C#0 — Enharmonic Equivalents
Db0 and C#0 are enharmonic equivalents — they sound identical at 17.324 Hz but are written differently depending on the musical context.
Db0: D♭ appears as the tonic of D♭ major and is common in flat key signatures. Common key signatures: D♭ major, G♭ major, A♭ major.
C#0: C♯ appears in sharp key signatures and is the leading tone in D major. Common key signatures: A major, E major, B major, F♯ major, C♯ major.
Enharmonic equivalents share the same frequency in equal temperament. In historical temperaments like Pythagorean or meantone, they may differ slightly.
Why Db0 Varies Across Tuning Systems
Db0 shows a maximum deviation of -17.58 cents in Third-Comma Meantone compared to equal temperament. This 18-cent difference is clearly audible to trained musicians and reflects how different tuning philosophies prioritize interval purity over equal distribution.
In Third-Comma Meantone, Db0 is tuned flatter than equal temperament, reflecting this system's approach to distributing the Pythagorean comma across the chromatic scale.
4 of the 15 non-equal temperaments deviate by more than 10 cents for Db0, making this note one where tuning system choice has a meaningful impact on pitch.
Db0 Across All Tuning Systems
Explore how Db0 is tuned in each historical temperament system. Each tuning system gives Db0 a slightly different frequency, affecting the harmonic character of chords and melodies.
Tune Db0 with precision — Get Tunable.
Tunable supports 15+ tuning systems including equal temperament, Pythagorean, just intonation, and historical well-temperaments. See exact Hz values in real-time as you play.