Acoustics
What is Acoustics?
Musical instruments, Architectural spaces, Sonar, Medical ultrasounds, Noise control, Electroacoustic communication, Bioacoustics, and Seismology.
Bat Echolocation Slowed Down
Bats use a perceptual system called echolocation that allows them to produce high pitch sounds that bounce off nearby objects and living things. Humans can’t normally hear these sounds, unless they’re slowed down.
From: David Attenborough’s Conquest of the Skies: Triumph, Smithsonian YouTube Channel