: When slowed down, these high-frequency "clicks" and "chirps" often sound like a series of rhythmic bird-like chirps or metallic "tinks" [4, 5].
: The pulses speed up as the bat detects a target [6]. heres_what_bat_echolocation_sounds_like_slowed_...
: Most bats emit sounds between 20 kHz and 200 kHz [1]. For context, the upper limit of human hearing is roughly 20 kHz [2]. : When slowed down, these high-frequency "clicks" and
Since we cannot hear these sounds naturally, researchers use [5, 7]. These devices use specialized microphones to capture high-frequency audio and then either heterodyne it (shifting the pitch) or use time expansion (slowing it down) so humans can study the intricate patterns of their "acoustic maps" [5, 7]. For context, the upper limit of human hearing
: Slow, steady pulses as the bat scans the environment [6].
When you listen to a recording of a bat approaching prey, the rhythm changes distinctly:
: Just before capture, the bat emits a rapid-fire burst of sound—sometimes hundreds of pulses per second—to get high-resolution tracking data in the final milliseconds [4, 6]. How We Record It