Sound detection is the process by which our ears and brain recognize and interpret sounds from the environment. When sound waves travel through the air, they enter our ears and cause tiny structures called hair cells in the inner ear to vibrate. These vibrations are then converted into electrical signals that are sent to the brain, allowing us to perceive different sounds, such as music, speech, or environmental noises. In addition to humans, many animals have unique sound detection abilities. For example, dogs can hear higher frequencies than humans, which helps them detect sounds that we cannot. Similarly, bats use echolocation, emitting sound waves and listening for their echoes to navigate and find food in the dark.