Description

This sensor has two modes of operation. In slow
mode it can be used to measure sound-pressure
level in decibels. In fast mode it can be used
to compare different sources of sound, their
waveforms can also be displayed.
It can be used to determine the frequencies of
tuning forks and wind-chimes and to calibrate
simple electronic signal generators. With two
sound sensors the velocity of propagation of
sound in various media can be determined by
timing a pulse travelling between them.
The sound sensor is located in a plastic box
accessible to the atmosphere via a hole in its side.