Recognised as Musical note
D4
- D4
- 293.66 Hz
- MIDI 62
D4 is MIDI note 62, sounding at 293.665 Hz in equal temperament with A4 = 440 Hz. Its wavelength in air is 1.168 m, and it sits in octave 4.
Pitch
Scientific pitch notationD4
MIDI note number62
Pitch classD (2)
Octave4
As a sound wave
Wavelength in air1.168 mat 343 m/s, dry air at 20 °C
Period3.4052 ms
Frequency one octave down146.832 Hz
AudibleYeshuman hearing runs roughly 20 Hz to 20 kHz and narrows with age
Intervals from here
Octave belowD3 · 146.83 Hz
Perfect fifth belowG3 · 196 Hz
Semitone belowC#4 · 277.18 Hz
Semitone aboveD#4 · 311.13 Hz
Major third aboveF#4 · 369.99 Hz
Perfect fifth aboveA4 · 440 Hz
Octave aboveD5 · 587.33 Hz
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