The factors affecting the rate at which a cricket chirps 

I have heard crickets chirp many times and I have always had questions about that. I wish I could understand them and find out what they are talking about with such a loud sound and excitement. I noticed that they often chirp at night and  sometimes they chirp more than others. I have been wondering why do they do this? Is it some kind of conversation among crickets?
Are they warning each other about a danger? Does it mean they are happy? scared? hungry? cold? hot? Is chirping an indication of being male or female? Does chirping have anything to do with the wind? moon? temperature? darkness? 
 Project description:
This project is an opportunity to study crickets and find out about the factors that affect the cricket's chirping (Sex, time of day, Weather temperature). You may optionally grow crickets for your experiment and use them to conduct your experiments.
 Details of this project
More details or support for this project is available for the members of Material needed for experiment may be found at home, ordered online or obtained locally.