Museum of Science and Industry

Front:
THE VOCODER See And Hear It Change Your Voice! bjorke You Voice! Book

Back:
MUSEUM OF SCIENCE AND INDUSTRY Chicago, Illinois THE "VOCODER" - A most important feature of Bell Telephone's "Hall of Communications" is this device, called a "Vocoder," which can be used to teach speech to deaf persons. It does tricks, too. Visitors are invited to participate in frequent demonstrations which turn their voices inside-out and upside-down. Museum of Science and Industry, East 57 and South Lake Shore Drive... plas Hastichrome COLOURPICTURE BOSTON, MASS. 02130 P86768