We know that from our experience when we tear up a piece of paper, we can hear a characteristic sound. What is the underlying mechanism behind it? What do the dominant frequencies (edit: I don't mean there is one main frequency of the sound, it is more likely the noise produced contains mostly higher or lower frequencies) and intensity of the sound depend on? The explanation should agree with the real life cases -- here are a few that I observed (correct me if I'm wrong):
- Dry paper makes louder sound and higher frequencies than wet paper
- Paper produces louder sound and higher frequencies if we tear it faster
- It is hard to tell which one produces louder sound, folded paper or single layer paper
- Folded paper produces lower frequencies than single layer paper
Also, is it the same mechanism that explains the sound produced when we are cutting paper using a scissor?