The formula to calculate Beat Frequency (fb) is:
\[ fb = |F2 - F1| \]
Where:
Beat frequency is defined as the difference in frequency between two sound waves of similar frequencies. When two waves of different frequencies are superimposed, they create a phenomenon called "beats," where the sound alternates between louder and softer tones. The frequency of these beats is equal to the absolute difference between the frequencies of the two waves. This concept is commonly used in tuning musical instruments, as well as in various applications in physics and acoustics.
Let's consider an example:
Using the formula to calculate Beat Frequency:
\[ fb = |445 - 440| = 5 \, \text{Hz} \]
This means that the beat frequency is 5 Hz.