basic

Beat Frequency from Two Sound Sources Calculator

f_beat = |f₁ − f₂| — perceived pulsation rate.

Calculates the beat frequency f_beat = |f₁ − f₂| when two sound waves of slightly different frequencies are superimposed. Also shows the beat period T_beat = 1/f_beat.

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

Hz
Hz

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

f_beat = |f₁ − f₂|

In depth

Calculates the beat frequency f_beat = |f₁ − f₂| when two sound waves of slightly different frequencies are superimposed. Also shows the beat period T_beat = 1/f_beat.