difference between audible and inaudible sound

sounds which can be heard by the human ear are called audible sounds.for the human ear the range of audible frequencies is roughly from 20 to 20,000 hertz.

sounds which cannot be heard by the human ear are called inaudible sounds.sounds of frequencies less than 20 hertz [ infrasonic] and above 20,000 hertz[ ultrasonic] are inaudible.

experts please give me thumbs up if i am right.

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Audible and inaudible sounds are relative terms. Audibility of sound depends upon capability of ear. For example the human beings can listen sounds having frequencies in the range from 20 Hertz to 20 Kilo Hertz. Hence the sounds having frequencies above and below this range are inaudible sounds for the human beings. While bats and some other insects can hear sounds having frequencies above 20 kHz ( Ultra Sonic Sound ) and in such cases the ultra sonic sound is audible for such creatures and the same kind of sound is inaudible to the human beings.
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