What You Need:
- Wax paper
- Cardboard tube
- Rubber band
- Cut a small square of wax paper about one-inch larger than the end of a cardboard tube. Wrap the wax paper over one of the ends of the tube and put a rubber band over the paper to hold it in place. Now, put the open end of your kazoo up to your mouth and hum a tune into it.
- Notice how the kazoo buzzes and vibrates to amplify (make louder) the sound of your voice.
Your voice is a complex sound wave that contains lots of different sounds all put together. Scientists call the different sounds harmonics and this is what makes your voice sound different than someone else's. As your voice travels down the cardboard tube and reaches the wax paper, the wax paper vibrates and all those harmonics get amplified. Not all the harmonics get amplified to the same extent, so the kazoo actually changes the way your voice normally sounds.