拍频计算器 — 公式
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.
计算示例
Two tuning forks at 440 Hz and 443 Hz played together.
- f_beat = |f1 - f2|
- f_beat = |440 - 443|
- f_beat = 3 Hz
- T_beat = 1 / 3 = 0.333 s