Kelly became a staple at Bell Laboratories. He was promoted to the position of head of the information coding and programming department. He applied Shannon theory to solve problems caused by the effects of sound echoes during satellite transmission. Kelly invented a block diagram compiler capable of looking at a simple logic diagram and producing working code.
And he also taught the computer to sing. It was the IBM 704 model, Thorp also used this model when he first started researching blackjack. In 1961, Kelly and Carol Lochbaum introduced their new sound synthesis system, they recorded an excerpt from Hamlet and played the song ''Daisy Bell'', which is more widely known by the song "Daisy Bell". the name "Bicycle built for two".
One difficulty that is always hidden in sound synthesis research is the ''parrot effect''. Through many studies, the person directly conducting the research can better understand the word formation process of their pet parrot than anyone else. Manfred Schroeder proudly recalls demonstrating sound synthesis to two Bell Labs managers in the mid-1950s: "They were very polite, but I was sure that what my machine was What I said really made them unable to understand."
