Free Beat Frequency Calculator
Calculate the beat frequency produced when two sound waves of slightly different frequencies interfere: f_beat = |f1 - f2|.
Hz
Hz
Beat Frequency
3.00 Hz
Beat Period0.3333 s
Beat Frequency vs Frequency 1
Beat Frequency
When two waves of slightly different frequencies overlap, they produce a pulsating amplitude variation called beats.
Formula
f_beat = f1 - f2
The beat period is T_beat = 1 / f_beat. Beats are commonly used by musicians to tune instruments.
Example Calculation
Two tuning forks at 440 Hz and 443 Hz played together.
- 01f_beat = |f1 - f2|
- 02f_beat = |440 - 443|
- 03f_beat = 3 Hz
- 04T_beat = 1 / 3 = 0.333 s
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