Bats make use of ultrasound (above 20000 Hz) waves to fly avoiding barriers. They emit ultrasound while flying. These waves are reflected back if they face a barrier. When a bat receives the reflected waves it can judge the position of the barriers and fly avoiding them.
Human hearing range describes the range of frequencies that can be heard by humans. Accordingly humans can detect sounds in a frequency range from about 20 Hz to 20000 Hz. Humans are most sensitive to frequencies between 2,000 and 5,000 Hz. And also sounds we can’t hear that is below 20 Hz (Infra-sound) and above […]
