20 Hz
Human hearing is capable of detecting sound waves between 20 and 20.000 Hz. … merely a small fraction of the frequency spectrum. Most sounds around us go unnoticed.
20 Hz
May 19, 2015
1
ratings
0
reviews
0
video reviews
Cast (1)
Alix Wilton Regan
Alice
Crew (2)
Directing
Chris Keller
Director
Writing
Chris Keller
Writer