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You Build It: Voice Changer

SmartLab By Paul Beck

11 x 8-1/2 x 3 in; 24 pp ; requires one 9-volt battery (not included), ages 8 and up
Published in August, 2005
ISBN 0974848646
ISBN13 9780974848648
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$19.99  

You Build It: Voice Changer -- For undercover operations or pure fun, the voice changer is the ultimate combination of silly and science!

Includes everything kids need to build a working voice changer. Kids can choose to have a scary, squeaky, robotic, or booming voice.

Paul Beck has been writing about science since 1994. His specialties include sound, music, and language. When he's not writing, he's developing exhibits for the hands-on Pacific Science Center in Seattle, Washington.