Ultrasonic waves generated in a medium can be detected using the following methods:

Only longitudinal waves propagate sound in air; waves in which the particle's motion consists of oscillations back and forth in the direction of propagation. Sound can be transmitted by either longitudinal or transverse waves in a solid, such as a metal rod.

Longitudinal sound waves can be produced using a Kundt'd tube, which is an apparatus consisting of a glass tube supported on a metal base. The frequency of the sound and the speed of sound in the rod can be determined using wave motion properties.