Internal vibrations (internal tremors): Causes, treatment, and outlook Your voice is like a ballon , 1. Vibration: When you let air out of a balloons neck, it vibrates and makes a squeaky sound. Similarly, your vocal folds vibrate as air passes through, producing Vibrate Mode Silent Mode Swi Apps on Google Play How to Make Your Phone Vibrate How to set phone alerts if you're deaf or hard of hearing CyberGuy