In 1885, famed inventor Thomas Edison (1847-1931) attempted to develop a “whispering machine”. What was it?

Answer: A “electrotyped phonographic book” device. The tiny machine was intended to be placed close beside a person’s ear, such as inside their hat, for a pre-recorded voice to narrate stories to the wearer without disturbing others. It would take a century for technology to develop to make such a device.

Source: Great Victorian Inventions by Caroline Rochford

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