Raymond Burr

Raymond Burr (better known as TV's Ironside) is credited with inventing the world's first dialling tone. The distinctive noise was first created when Burr attempted to teach a robot how to pronounce his surname.

He strived in the hope that the robot would return the favour by lending him its robotic legs, enabling Burr to walk again.

He is also credited, to a lesser extent, with inventing the noise that people make when they're cold.

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