Crepitate is a verb that means to make a crackling sound.

The latin word crepitare means ‘to crackle.’ It entered English in the Early 17th century. Here’s an example of crepitate in use:

Hearing all those creatures crepitate in the night made me a little uneasy. Don’t get me wrong, I love the wilderness, but I love it more when there isn’t so much rattling in the dark.