What is a normal beat frequency?

The beat frequency is the rate of oscillating volume heard. You can calculate it as the absolute difference between two waves.

The beat frequency is defined as the difference in frequency between the two original waves. This means that the closer the two frequencies are, the smaller the beat frequency is (meaning fewer beats per second), which makes them easier to distinguish by the human ear .

Beat frequency roughly in the range of 10-60 Hz . This range of frequencies is quite significant and problematic for the human nervous system. It is too fast for the individual events to be discerned, but too slow for the brain to ignore.