Question

what do you mean by infrasonic vibration​

Answer 1

Explanation:

Infrasonic. Pertaining to VIBRATIONs and SOUND WAVEs whose FREQUENCY is too low to be heard as sound by the human ear, i.e. below about 20 Hz. The term is also used loosely to describe any low frequency sound.

Answer 2

Answer:

The types of vibrations which have a frequency less than 20 Hz which is the lower limit of audibility of the human ear are called infrasonic vibrations

Explanation:

Sounds which have frequencies from:-

> less than 20hz are called infrasonic and cannot be heard through our years

> 20-20,000hz are called the sonic range and is the audible range of our ears

> more than 20,000hz are called ultrasonic range and also cannot be heard by our ears