What is the audible range of frequencies for human beings? Explain.

Sounds of frequencies less than about 20 vibrations per second (20 Hz) cannot be detected by the human ear. Such sounds are called inaudible. On the higher side, sound of frequencies more than about 20, 000 vibrations per second (20kHz) are also not audible to the human ears. Thus, for human ears, the range of audible frequencies is roughly from 20.