1. The problem statement, all variables and given/known data Consider two sound sources S1 with a frequency of f1 = 3367 Hz and S2 with a frequency of f2 = 3362 Hz. Determine the smallest difference in frequency from 3367 Hz that the average person can detect? 2. Relevant equations The only thing I can think of is approximating the ear as a closed tube, so f=nv/4L. Also, beat f = 5Hz. 3. The attempt at a solution I'm honestly completely clueless here. I've never heard of a formula that deals with this and I can't find anything online. Is there an actual formula that I can use here? Maybe something related to the beat vs the fundamental frequency of the ear?