Question

Differentiate between audible and inaudible sounds.

Answer 1

Hint: Sound is a form of energy that is manifested by the vibration of bodies. The range is dependent on frequency, whenever we refer to audible and inaudible sounds all these terms are with respect to human being's hearing capability.

Complete answer:

The differences between Audible sound and Inaudible sound are as follows:

Audible Sound	Inaudible sound
1. Audible Sound is the sound of frequency which is audible to the human ear. The frequency of audible sounds is usually between 20Hz to 20kHz.	1. Inaudible sounds are the sounds of frequency which are not audible to the human ear. The frequency of inaudible sounds is below 20Hz and greater than 20kHz.
2. The human ear is very sensitive to the extent that every minute pressure difference in the air can be heard if they are in the audible frequency range.	2.The ultrasound machine which is used for tracking and studying many medical problems works at frequencies greater than 20kHz.

Note:

The human ear cannot detect the frequencies below 20Hz; these frequencies are also known as infrasonic sound. Whereas the frequency above 20kHz comes in the range of inaudible frequency, it is also known as ultrasonic sound.