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Musical note

D2

  • D2
  • 73.42 Hz
  • MIDI 38

D2 is MIDI note 38, sounding at 73.416 Hz in equal temperament with A4 = 440 Hz. Its wavelength in air is 4.672 m, and it sits in octave 2.

Pitch

Scientific pitch notationD2
MIDI note number38
Frequency73.4162 Hzequal temperament, A4 = 440 Hz, a convention rather than a constant
Pitch classD (2)
Octave2

As a sound wave

Wavelength in air4.672 mat 343 m/s, dry air at 20 °C
Period13.621 ms
Frequency one octave up146.832 Hzdoubling the frequency
Frequency one octave down36.708 Hz
AudibleYeshuman hearing runs roughly 20 Hz to 20 kHz and narrows with age

Intervals from here

Octave belowD1 · 36.71 Hz
Perfect fifth belowG1 · 49 Hz
Semitone belowC#2 · 69.3 Hz
Semitone aboveD#2 · 77.78 Hz
Major third aboveF#2 · 92.5 Hz
Perfect fifth aboveA2 · 110 Hz
Octave aboveD3 · 146.83 Hz

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Nearby notes

The same note in other octaves

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Every value on this page was computed from “note d2” by Nerdulator’s reference engine. Nothing here was retrieved from a database of answers or written by a model.