The beat frequency is equal to the complete value of the alteration in the frequency of the two waves. The count of beats per second is equivalent to the difference in frequencies of two waves is called beat frequency. … Beat Frequency Formula: fbBeat frequencyf1Frequency of 1st wavef2Frequency of 2nd waveBeat Frequency Formula – Toppr www.toppr.com › guides › physics-formulas › beat-frequency-formula