Music Theory Formulas
Music theory formulas explained with examples.
Pitch frequency, intervals, tempo, and equal temperament.
Decibel Sound Level Formula
Sound intensity in decibels: L = 10 × log₁₀(I/I₀). How loudness scales with intensity. Why +10 dB sounds twice as loud but represents 10× more energy.
Musical Interval Frequency Ratios
Frequency ratios of musical intervals in just intonation and equal temperament. Perfect fifth = 3/2, octave = 2/1. Essential music theory reference.
Pitch and Frequency Formula
Calculate note frequency from MIDI note number: f = 440 × 2^((n-69)/12). Equal temperament tuning explained with frequency table.
Tempo and Note Duration Formula
Calculate note duration in milliseconds from BPM: duration = 60,000 / BPM. Quarter notes, eighth notes, dotted notes — all explained.