The Smart Lab “You Build It Voice Changer,” this kit will make you wonder, when does the fun end? Learn about electronics while you follow the included book and build a voice changer from scratch. After completing the project, enjoy the 4-way voice changer and make your voice sound outrageously scary or even extremely silly!

 

Includes everything you need to build an electronic voice changer. Includes a 24 page color booklet about the science of sound!

 

Why don’t bats crash into things when they fly at night?

How can a machine tell when you are lying?

Why does your voice change as you grow up?

 

Ride the waves of sound with award-winning author Paul Beck!

 

Requires one “9-volt” battery. (Not included)