The sounds possessing also low frequencies which can not be read by human ear are named infrasonic sounds (or maybe infrasonics). Rhinoceros can generate infrasonic sounds getting frequencies lower than twenty Hz. They could also hear infrasonic sounds. Notice: angular frequency ω (ω=two π file) Along with the models of https://cristiannhztl.dailyhitblog.com/34089226/5-simple-techniques-for-what-is-isolator-and-its-function