Lab - Foxy - Speed of ultrasound and wavelength

Description:
An ultrasonic transmitter emits an ultrasonic wave that faithfully reproduces the electrical voltage applied to its terminals.
A receiver transforms the ultrasonic wave into an electrical voltage that reproduces the ultrasonic wave.
The ultrasonic transmitter can emit bursts or periodic waves.

Objectives:
What is the frequency of these waves?
Determine the speed of sound by measuring the distance between 2 receivers.

Procedure:
Measure the ultrasonic signal emitted by a Moduson transmitter using 2 receivers located at a distance from each other.