Crickets “chirp” by rubbing their wings or legs over each other. This phenomenon is known as stridulation. It is a means by which male crickets “call” to females to communicate their interest in mating.
Frequency refers to the number of chirps that crickets produce during a period of time. Some have suggested that you can tell the temperature and the humidity based on how fast crickets chirp.
Since it may be difficult to gather data on cricket chirps, since they most likely produce sounds at dusk, this simulation can be used to determine which variable, temperature or humidity, has the greatest affect on chirp frequency.