Beat frequency problem. Your ear simultaneously hears waves from different sources, so it can hear beats from the two speakers. In principle, the easiest way to measure the sound waves is to put a detector between the two speakers; however, in the experiment no detector is used to measure the wave field. Instead the voltages applied to the speakers are added electronically by the oscilloscope to simulate the true sound waves. Graphical depiction of the constructive and destructive superposition of 2 simple harmonic waves Suppose one speaker is driven at 569 Hz and the other at 559 Hz. What is the beat frequency in Hz