By comparison, bat echolocation has been recorded at up to 212 kilohertz, the hearing of dolphins peaks at 160 kilohertz, and humans do not hear beyond 20 kilohertz.
Sebagai perbandingan, kelelawar tercatat bisa mendengar suara sampai 212 kilohertz, lumba - lumba sampai 160 kilohertz, dan manusia hanya sampai 20 kilohertz.