Beats Frequency Calculator
Compute beat frequency, beat period and average frequency of two tones.
Input Data
Frequency1Hz
Hz
Frequency2Hz
Hz
Results
|f₁ − f₂|.
4Hz
1/beat frequency.
0.25s
(f₁+f₂)/2.
442Hz
At a glance:Beat = |f₁−f₂|; period = 1/beat; average = (f₁+f₂)/2. Complements beat-frequency and wave-properties.
Formula
f_beat = |f₁ − f₂|.
T_beat = 1/f_beat.
$$f_{\text{beat}} = |f_1 - f_2|, \quad T_{\text{beat}} = \frac{1}{f_{\text{beat}}}, \quad y = 2A\cos(\pi f_{\text{beat}} t)\cos(2\pi f_{\text{avg}} t)$$How to Use
- Enter the two frequencies.
- The tool returns beat, period and average.
Case Studies
f₁=300, f₂=304
beat 4 Hz, period 0.25 s.
FAQ
Beat period?
Time between loudness maxima = 1/beat frequency.
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References
Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.