Two Tuning Forks Are Struck At The Same Time. One Tuning Fork Has A Frequency Of 20Hz While The Second Tuning Fork Has A Frequency Of 226Hz. How Many Beats Will Result?
Answer:
Two audio waves of those frequencies will combine to give a sound that contains the frequencies 246 Hz and 206 Hz. (Possibly along near harmonics of all the frequencies mentioned.) These are both squarely in the audible range.
Normally, we conjecture of "beats" as changes in loudness that result from two frequencies near respectively other sometimes adding and sometimes canceling. I would not consider this experiment to produce any beats at all.
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