Sound too low in frequency to hear (~<20Hz) is called infrasound. Sound too high infrequency to hear (~>20kHz) is called ultrasound.
heat energy
It is infrasound, below 20 Hz, that we cannot hear, but feel.
If you used to hear the voice,you can identify it.
It means its broken!
a person who cannot speak or hear is known as a mute
Deaf A hearing impaired person/ Deaf.
a person who cannot speak or hear is known as a mute
People who are def or hard of hearing cannot hear.
A person who can hear!
blind, and if they cannot see properly we called them deaf:) hope this helps
If a person or animal cannot hear, they are said to be 'deaf'.
A person who cannot hear or speak is called a deaf-mute.Someone who cannot hear or distinguish sounds at all is "deaf".Someone with partial deafness may be referred to as "hearing impaired".
a deaf person
A person who cannot hear or speak is commonly referred to as "deaf-mute" in older terminology. However, the preferred term today is "deaf and nonverbal" or "deaf and mute" depending on whether the person communicates primarily through sign language or other means.
infrasound
Communications impaired