Human hearing is capable of detecting sound waves between 20 and 20.000 Hz. … merely a small fraction of the frequency spectrum. Most sounds around us go unnoticed.
Alix Wilton Regan
Score: 4.4
Score: 10.0
Score: 0.0
Score: 0.0
Score: 8.0
Score: 5.0
Score: 7.4
Score: 7.0
