Question

Q What are the audible and inaudible frequencies

Answer 1

Audible sound: The human ear can only recognize sounds of frequencies in the range of 20 Hz and 20,000 Hz and this range of frequency is called audible sound.

Inaudible sound: Sound with frequency below 20 hertz and above 20,000 hertz is called sound of inaudible range.

Answer 2

Answer:

Human ear cannot detect sound frequencies less than 20 vibrations per second i.e. 20 Hz. ... So the frequencies below 20 Hz and above 20 kHz comes under the category of inaudible frequencies. The low-frequency sound which the human ear cannot detect is also known as infrasonic sound.