Musical note
B2
- B2
- 123.47 Hz
- MIDI 47
B2 is MIDI note 47, sounding at 123.471 Hz in equal temperament with A4 = 440 Hz. Its wavelength in air is 2.778 m, and it sits in octave 2.
Pitch
Scientific pitch notationB2
MIDI note number47
Pitch classB (11)
Octave2
As a sound wave
Wavelength in air2.778 mat 343 m/s, dry air at 20 °C
Period8.0991 ms
Frequency one octave down61.735 Hz
AudibleYeshuman hearing runs roughly 20 Hz to 20 kHz and narrows with age
Intervals from here
Octave belowB1 · 61.74 Hz
Perfect fifth belowE2 · 82.41 Hz
Semitone belowA#2 · 116.54 Hz
Semitone aboveC3 · 130.81 Hz
Major third aboveD#3 · 155.56 Hz
Perfect fifth aboveF#3 · 185 Hz
Octave aboveB3 · 246.94 Hz
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