How do I add a click or pop noise to an audio file

[Trebor]

I have an audio file of length 8 seconds and would like to modify it and add a few digital click or pop sounds to it. Can I do it with the help of audacity? If yes, how? Any help or pointers would be really helpful.

There is an Audacity plugin which can add crackle … How to make your voice like this? (Presumably helmet-radio) - #12 by Trebor