What factors decide the range of human hearing?

There are several factors determining human hearing range. Size is the big factor. Bigger animals tend to respond to lower frequencies than small ones. Mice communicate in ultrasonic sounds. If you own high fidelity speakers, they have a big speaker for base and a small speaker for treble. read more

These factors affect the range of human hearing: DNA of your ancestors; good and poor hearing runs in families. Loud noise exposure. Shape of you external ear. Your auditory processing which can be affected by head trauma, difficult birth, allergic reactions, inflammation or eat infections. read more

"The general range of hearing for young people is 20 Hz to 20 kHz." 20-20,000 Hz "Body, Human." The New Book of Knowledge. New York: Grolier, 1967: 285. "The human ear can hear vibrations ranging from 15 or 16 a second to 20,000 a second." 15 or 16-20,000 Hz: Caldarelli, David D. and Ruth S. Campanella. Ear. World Book Online Americas Edition. 26 May 2003. read more