Your larynx is often called your voice box because it holds the vocal cords that help you make sounds. The larynx makes the bump you can see and feel in the middle of your neck. Some people call that bump the "Adam's apple."
Your eardrum is a thin membrane (like skin) inside your ear. It's stretched tight like a drum and vibrates when sound hits it. The vibrations go into your middle and inner ear and are turned into nerve signals. The nerve signals go to your brain so you hear the sound. Your eardrum also keeps water and dirt out to protect the tiny bones inside your ear.