Created By : Vaibhavi Kumari

Reviewed By : Rajashekhar Valipishetty

Last Updated : May 17, 2023

A beat frequency calculator is a tool for calculating the frequency of two waves. If you like music, you're certainly familiar with the concept of beats, but have you ever pondered what frequency the rhythm you're listening to is? Understanding how to compute beat frequency might help you grasp the logic behind binaural beats and their frequencies. You'll discover how to use the beat frequency equation and a few important applications of the beat frequency in the article below.

First Wave frequency
Second Wave frequency
Beat frequency 〰️

What is the Frequency of the Beats?

Beats are created when two waves with identical frequencies travel in the same medium and coincide. The pace at which you hear the oscillating volume depends on the beat frequency, which would be the absolute distinction between the 2 waves that make up the beats.

If the wavelengths of the two waves are different, the resulting sound will be uneven and non-repeating, making it unpleasant to listen. If the amplitudes of the interfering waves are the same, pure beats form; if the amplitudes differ, beats may be difficult to detect.

Binaural beats, sometimes known as auditory illusions, are a fun type of beat that can help you go asleep.

They are perceived in this manner because the tone we hear is a sound perception created only by our brain. Our brain creates a third sound wave, the one we hear when we hear two waves of different frequencies via each ear. This process is called binaural beat frequency.

There are several characteristics that the waves must meet in order to form binaural beats, hence not all beats may be classified as binaural beats:

  • The frequencies of the two waves must be less than 1000 Hz.
  • The two wave’s beat frequency must be less than 30 Hz.
  • Each of the two waves must be heard through its own ear.


Beat Frequency Formula

The time duration of two waves is the most important factor in the beat frequency equation. You can subtract one from the other since an object's time duration is inversely proportional to its frequency.

We can summarise the beat frequency formula as follows:

Fb = |F2 - F1|

  • Where, Fb = Beat frequency
  • F1 = Frequency of 1st wave
  • F2 = Frequency of 2nd wave

What is the Procedure of Forming Beats?

Beats are formed when two sound waves traveling in the same medium interfere with each other. It causes quiet and strong tones to alternate.

The following situations enable beats to form:

  • Step 1: Both waves should have the same amplitude.
  • Step 2: There must be a slight frequency difference.
  • Step 3: To hear beats, the frequency difference between them should usually be less than 10 Hz.

How to find out the Frequency of a Beat?

Use the steps below to calculate the beat frequency using our calculator:

  • Step 1: Enter the first wave's frequency.
  • Step 2: Input the second wave's frequency.
  • Step 3: That's all there is to it! The beat frequency calculator is in charge of the rest. It will use the above beat frequency calculation to determine the beat frequency in your chosen unit.
  • Step 4: Hertz is the standard frequency unit (Hz).

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FAQs on Beat Frequency Calculator

1. What is the beat frequency?

When two or more waves with slightly different frequencies superimpose on one other, a sound with regularly fluctuating amplitude is observed at a spot. Beats are the name for this phenomenon. 

2. What is the process of making beats?

When two sound waves of different frequencies reach your ear, constructive and destructive interference causes the sound to alternately be soft and loud - a phenomenon known as "beating" or "creating beats."

3. Can you find out how many beats per second there are in a second?

The difference in frequency between the two interfering waves equals the number of beats per second. The absolute value of the difference in frequency between the two waves equals the beat frequency.

4. What is the difference between a beat period and a beat frequency?

When two waves of nearby frequencies travel in the same route, they superimpose and create a beat. As a result, the intensity of the resulting wave varies on a regular basis. The number of beats produced per second is known as the beat frequency.

5. What are the benefits of beat frequencies in tuning?

The beat frequency is the rate at which the sound increases and decreases. The beat frequency goes to zero when two sounds are tuned to the same frequency, and the beats are not heard. This can help you tune your musical instruments.