by micb July 06, 2003
Commonly known for range of sound from 80 hz to 20 hz, this is the very low end of the human hearing range.
Not to be confuesed with
Below 20Hz sounds = Infrasonic.
OR
Above 20,000Hz = ultrasonic.
Not to be confuesed with
Below 20Hz sounds = Infrasonic.
OR
Above 20,000Hz = ultrasonic.
by micb July 06, 2003