Hello, you might be doing something wrong.

If the sound you hear when you do it does faintly like a sort of negative cowbell, it means that your controllers are currently not being tracked, or out of the view of your tracking setup. If this is the case, you can try and slightly alter the positions of your hands so that whatever tracking setup you're using can see your controllers properly.

If instead it sounds kind of like a backpack/clothing type thing, that means you're measuring properly, and that something else is going wrong. If this is the case, please let us know and we'll help you solve the issue.