Note Durations

Note Values

Western music notation divides beats into standard note values. At a given BPM, each note value has a precise duration in seconds.

Note Values

Formula

noteDuration(bpm, noteType) = 60 / bpm × (4 / noteType)

Where noteType is 1 (whole), 2 (half), 4 (quarter), 8 (eighth), or 16 (sixteenth).

Example at 120 BPM

Quarter (4):   60/120 × (4/4)  = 0.5000 s
Eighth  (8):   60/120 × (4/8)  = 0.2500 s
Sixteenth (16): 60/120 × (4/16) = 0.1250 s

Your Task

Implement noteDuration(bpm, noteType) returning the duration in seconds.

Run your code to hear quarter notes followed by eighth notes.